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Trane VUVE Vertical Classroom Installation and Maintenance Manual

1. J2 m LED4 LED1 LEDI 7 LED2 23 23 283 F LED 2 0 rer ler oar kam SRE e ROEA LE D 3 f L L L SIGNAL 81 S2 S3 LED5 ADDRESS Ta LED5 O POWER hot T 1S eae paaa Sea HEATING SET ee FAN SYSTEM LA SETPOINT a U dca s5 ZONE E GND SIGNAL Re 24VAC DC m GND POWER COMM m COMM He Lani EY The sensor for model WZS have four LEDs LED1 LED2 LED3 and LED5 The sensor for model WDS has test symbols and error codes that appear on the display All three sensor models have a Test button Figure 66 shows their locations UV SVNO3F EN Figure 66 LED Test button and symbol locations on the sensor EGA Jgv1 Q Po e t Pb FREE rs LED1 LED1 LED 9 3 23 23 LED2 _ NX SA NY CACA LE D 3 1 8 L Ner ggN Pb SIGNAL S2 LED5 oil LEDS ADDRESS oo ua STATUS T al s4 NERS
2. gt A a A ee eee F 075 Standard unit no falseback 13 50 66 39 10 38 45 64 Standard falseback 26 00 67 00 10 00 47 00 29 in stepdown falseback 24 44 67 00 10 00 47 00 28 in stepdown falseback 23 44 67 00 10 00 47 00 27 in stepdown falseback 22 44 67 00 10 00 47 00 26 in stepdown falseback 21 44 67 00 10 00 47 00 25 in stepdown falseback 20 44 67 00 10 00 47 00 100 Standard unit no falseback 13 50 78 39 10 38 57 64 Standard falseback 26 00 79 00 10 00 59 00 25 in stepdown falseback 59 00 28 In stepdown falseback 59 00 27 in stepdown falseback 59 00 26 in stepdown Talseback 59 00 25 in stepdown Talseback 59 00 125 Standard unit no falseback 69 64 Standard falseback 71 00 25 in stepdown falseback 71 00 28 in stepdown falseback 71 00 27 in stepdown Talseback 71 00 26 in stepdown Talseback 71 00 25 in stepdown Talseback 71 00 150 Standard unit no falseback 81 64 Standard falseback 83 00 25 in stepdown falseback 83 00 28 In stepdown Talseback 83 00 27 in stepdown Talseback 83 00 26 in stepdown Talseback 83 00 25 In stepdown Talseback 83 00 falseback metal Use these holes rather than the holes located in the unit s end pockets AWARNING Improper Unit Lift Test lift unit approximately 24 inches to verify proper Note Ensure the unit is level Coils and drain pans inside the unit are pitched properly for draining before shipment center of gravity lift point To
3. 4 Verify nameplate sales order number is correct 5 Remove shipping bracket from the lower rear corners of the unit and shipping skid Access to the screws holding unit to the skid is obtained inside the unit Figure 8 Shipping skid removal y 0 Je ae m ay 6 Rotate fan wheels manually Wheels should move freely and be in proper alignment Visually inspect the fan area for obstructions or shipping damage 7 Remove all applicable knock outs for coil piping and electrical connections see Figure 2 p 12 through Figure 4 p 14 UV SVNO3F EN Pre Installation Jobsite Inspection Always perform the following checks before accepting a unit 1 Verify that the nameplate data matches the data on the sales order and bill of lading including electrical data Verify that the power supply complies with the unit nameplate specifications Visually inspect the exterior of the unit for signs of shipping damage Do not sign the bill of lading accepting the unit s until inspection has been completed Check for damage promptly after the unit s are unloaded Once the bill of lading is signed at the jobsite the unit s are now the property of the SOLD TO party and future freight claims MAY NOT be accepted by the freight company Jobsite Storage This unit is intended for indoor use only To protect the unit from damage due to the elements and to prevent possible IAQ contaminant sources from growing 1
4. Diagnostics Types UC400 Diagnostics are categorized according to the type of clearing method each uses and the type of information each provides The diagnostic types are e Manual latching diagnostics e Automatic non latching diagnostics e Smart reset diagnostics e Informational diagnostics Note Clearing diagnostics refers to deleting diagnostics from the software it does not affect the problem that generated the message Manual Latching Diagnostics UC400 Manual diagnostics also referred to as latching cause the unit to UV SVNO3F EN S TRANE Diagnostics shut down Manual diagnostics can be cleared from the UC400 controller in one of the following ways e By using the Tracer TU service tool to reset latching diagnostics on the Alarms Status tab or by temporarily overriding the Reset Diagnostic Request bv 2 on the Binary Status tab e Through a building automation system e By cycling power to the controller When the 24Vac power to the controller is cycled OFF and then ON again a power up sequence occurs Automatic Non latching Diagnostics UC400 Automatic diagnostics clear automatically when the problem that generated the diagnostic is solved Smart Reset Diagnostics UC400 Smart Reset Diagnostics are latching diagnostics that will auto recover ifthe condition is corrected After the controller detects the first smart reset diagnostic the unit waits 30 minutes before initiating the
5. LED1 Off Poor signal strength LED2 Off e Unreliable communication LED3 On e Strongly recommend moving the sensor or receiver to a better location Displays for 5 seconds then constantly Off Testing Battery Status Wireless Controls Initiate a battery status test as follows e On model WZS push the Test button onthe sensor see location on Figure 66 p 97 LED5 on the sensor responds by indicating the level of battery strength as shown in Table 39 p 98 98 Satisfactory signal strength e Adequate signal i strength for reliable communication Poor signal strength e Unreliable communication e Strongly recommend moving the sensor or e On model WDS push the Test button on the sensor see location on Figure 66 p 97 In response a battery test symbol appears on the display The symbol shown indicates battery life expectancy see Table 40 Table 39 Battery status LED5 on model WZS sensors wireless controls User action LED state WZS Press Solid green for 5 seconds Battery is adequate for proper Indicates Test operation button Solid red for 5 seconds 25 battery life left Batteries should be replaced No light Batteries life expired or not installed properly or sensor is defective None Blinking red 1 blink pattern repeated 5 times Cycle repeats every 15 minutes Approximately 14 days of operation remain before the battery is too weak to power the sensor a Bli
6. Rover Trane s service tool can reset diagnostics presentin the controller and troubleshoot the unit For more information refer to the Trane publication EMTX SVX01G EN Rover Service Tool Installation Operation and Programming Guide or the most recent revision Diagnostic Reset Tracer ZN520 Any device that can communicate the network variable nviRequest enumeration clear_alarm can reset diagnostics in the Tracer ZN520 controller The controller also attempts to reset diagnostics whenever power is cycled Cycling the Fan Switch Tracer ZN520 Cycle the fan speed switch from Off to any speed and the controller resets all diagnostics Diagnostics may recur immediately if the problem still exists Table 28 Fan outputs do not energize Tracer ZN520 Probable Cause Explanation Random start After power up the controller always observes a random start that varies observed between 0 and 25 seconds The controller remains off until the random start time expires Power up control wait When power up control wait is enabled non zero time the controller remains off until one of two conditions occurs 1 The controller exits power up control wait once it receives communicated information 2 The controller exits power up control wait once the power up control wait time expires Cycling fan When the fan mode switch is in the auto position the unit operation fan cycles off when there is no call for heatin
7. Vertical louvers in the wall intake box provide extra strength for a high load bearing capacity The lintel may be omitted on masonry wall installations Weep holes are provided in the outside face of the bottom channel in the wallbox frame Install all wall boxes to permit free drainage through the weep holes to the outside of the building All wallboxes are furnished with diamond pattern expanded aluminum bird screen Note V1 and V2 vertical wall models are all unflanged H2 V3 and V6 are flanged Installation in Masonry Walls A typical method of installing the wall box ina masonry wall opening is shown in Figure 9 Grout the top and bottom of the wall box frame as noted A sloped water dam located in the space between the unit and wall facilitates moisture drainage Grouting at the ends of the intake box will complete the seal between the wall box frame and the masonry opening Installation in Curtain Walls In all cases the wall intake box should be caulked to provide a tight weatherproof seal see Figure 10 Note A minimum of 2 1 8 in of clearance must be maintained between the exterior wall and back of the unit Failure to provide this gap will not allow the wall box to fit properly 20 Figure 9 Masonry wall installation Interior Wall w sheetrock Outside Wall Water dam sloped toward exterior Figure 10 Flanged wall box installation in 2 in curtain wall Interior Wall w sheetrock
8. 05 43 DX SysteM 2 0 cee 43 Split System Start Up 5 43 ECM Overview and Setup 45 OvervieW ee ee eee 45 General Information 005 45 Trane BLDC Motor 5 45 ECM Engine Controller 45 Standard Adapter Board 46 CSTI Adapter Board 00 46 Installation and Initial Setup 47 Installation and Initial Setup 47 Adjustment and Configuration of the Engine BOO eeaeee aea ee ee he ee es 49 Status Display wns 6s 2 wow sald ares oes oA 50 Initial Setup and Configuration 55 Configuration 0 0c eee ees 55 Configuring the ECM Engine Controller 55 Configuring the ECM Engine Board 60 Time CIOCK 0 cece es 65 Setting the Time Clock 65 Wired Controllers Communication Wiring 67 Wiring Installation ZN520 67 Device Addressing 200000e eee 67 Recommended Communication Wiring Prac CCS a4 pa sey eae Pacey ese eG 67 Wiring Installation Tracer UC400 67 Wiring Overview Outline 68 General Instructions 04 68 BACnet MS TP Link 68 Power Supply naonnana anana eee anaes 69 Pre Stait 54 4 2c204 505005045 44550 58n 00 ROSES 71 UV SVNO3F EN Pre Start up Checklist 71 StarlUD vena wade es eee eda bo eee 72 Tracer ZN520 Unit Startup 72 Tracer UC400 Unit Startu
9. Binary Output Configuration J1 1 Fan high J1 2 Fan medium J1 3 Fan low J1 4 Key j1 5 Cool valve open or 2 position valvel J1 6 Cool valve close Note 1 J1 9 Heat valve open or 2 position valve or 1st electric heat stage J1 10 Heat valve close or 2nd Electric heat stage J1 11 Fresh air damper open J1 12 Fresh air damper close TB4 1 Generic baseboard heat output TB4 2 24 Vac a For Tracer ZN520 units configured and applied as 2 pipe hydronic heat cool changeover terminals 1 5 and J1 6 are used to control the pri mary valve for both heating and cooling For Tracer ZN520 units con figured and applied as 2 pipe hydronic heat cool changeover with electric heat terminals J 1 5 and J 1 6 are used to control the primary valve for both cooling and heating and terminals J 1 9 and J1 10 are used only for the electric heat stage For those 2 pipe changeover units electric heat will not be energized while the hydronic supply is hot 5 or more above the space temperature UV SVNO3F EN Table 21 Analog inputs Tracer ZN520 Descripti Termina on Is Function Range Zone TB3 1 Space temperature 5 F to 122 F input Ground TB3 2 Analog ground NA Set TB3 3 Fan B3 4 40 F to 115 F 4821 to 4919 W off 2297 to 2342 W auto 10593 to 10807 W low 13177 to 13443 W medium 15137 to 16463 W high Analog ground NA Setpoint input Fan switch input Ground TB3 6 Analog J3
10. If multiple stages of electric heat exist the controller will use a single minimum air flow for each stage Exhaust Control UC400 Exhaust control is achieved by a single speed exhaust fan and controlled by binary output 2 BO2 Exhaust control if not present can be enabled by selecting Yes under the Exhaust Fan Selection on the Tracer TU Configuration page under the Equipment Options group Note Exhaust fan configuration cannot be selected with 3 speed fan operation Important f exhaust control is added to an existing configuration all other configuration options should be verified to match the correct equipment options Temperature and flow setpoints will revert to default values The exhaust function is coordinated with the supply fan and outdoor return air dampers as follows e The exhaust fan energizes when the fan Is running and when the outdoor air damper position is greater than or equal to the exhaust fan enable position or the outside air damper position at which the exhaust fan turns ON e The exhaust fan turns OFF when the fan either turns OFF or the outdoor air damper closes to 10 percent below the exhaust fan enable position e Ifthe exhaust fan damper enable setpoint is less than 10 percent the exhaust output is energized if the outdoor air damper position is at the setpoint and de energized at 0 Valve Operation UC400 The UC400 controller supports one or two modulating or two position val
11. J1 Boe P e B2 gt Q g r 0 as Q T e sj Ape Test button WZS sensor Test symbols Error code Test button WDS sensor Diagnostics Wireless Controls LED1 LED2 and LED3 located on the sensor of model WZS respond to diagnostics by exhibiting specific blinking patterns View their response by pressing the Test button see Table 35 p 97 UV SVNO3F EN S TRANE Diagnostics Error codes appear on the display of the model WDS sensor when diagnostics occur see Table 35 Table 35 Diagnostics on the sensor wireless controls Error code LED state when Test WDS button is pressed WZS sensor sensor display Indicates N A EO E5 E7 Sensor failure e Replace sensor LED1 Off El Disassociated LED2 Off e Sensor is not associated with LED3 1 blink pattern a receiver repeated 3 times LED1 Off E2 Address set to 000 LED2 Off e Address not set to between LED3 2 blink pattern 001 999 repeated 3 times LED1 Off E3 Software error LED2 Off e Replace sensor LED3 3 blink pattern repeated 3 times LED1 Off E4 Input voltage too high LED2 Off e No RF transmission is LED3 4 blink pattern permitted with an input repeated 3 times battery voltage greater than 3 9 V a Blink pattern is On for 1 4 s Off for 1 4 s with 2 s Off between repe titions LED1 LED2 and LED3 located on the receiver of all models respond to diagnostics by exhibiting specific blinking pat
12. Place the unit s on a dry surface or raise above the ground to assure adequate air circulation beneath the unit Cover the unit s with a water proof tarp to protect them from the elements NOTICE Microbial Growth Wet interior unit insulation can become an amplification site for microbial growth mold which may cause odors and damage to the equipment and building materials If there is evidence of microbial growth on the interior insulation the insulation should be removed and replaced prior to operating the system 3 Make provisions for continuous venting of the covered units to prevent moisture from standing on the unit s surfaces 4 Do not stack units UV SVNO3F EN TRANE Installation Mechanical Wall Box Installation The following instructions are general recommendations for installing wall intake boxes Consult the architectural plans for specific requirements Additional materials required to complete any specific installations such as duct connections metal mounting plates or flanges are not furnished by Trane For best results all air intake boxes should be removable from outside of the building Weep holes must be at the bottom to permit free drainage A positive air and moisture seal should be provided around all edges General Instructions Trane wall boxes are illustrated in the dimensional section of this manual Dimensions are actual and may be used to define the wall opening
13. 5 1 4 oe gt PIPE CHASE 7 3 o p 90 AUX DRAIN CONN optional Y 11 gt 14 3 8 gt 7 lt SIDE VIEW 3 3 4 16 5 8 GRILLE UNIT MOUNTED FAN SWITCH OPTIONAL UNIT SIZE FRONT OF UNIT RETURN AIR OPTIONAL NOTE 10 7 8 NO FANS pe fe 1 THE UNIT LENGTH DOES NOT INCLUDE 5 8 END PANELS 2 THE POWER CONNECTION IS MADE IN THE LEFT HAND END POCKET FOR ALL OPTIONS BUT ELECTRIC HEAT 3 THE POWER CONNECTION FOR ELECTRIC HEAT OPTION IS MADE IN THE RIGHT HAND END POCKET UV SVNO3F EN S TRANE Dimensions and Weights Figure 3 Falseback unit 21 1 4 gt A 16 5 8 gt lt 2 3 8 4 K O FOR PIPING OR ELECTRICAL 7 8 O D DRAIN CONN PIPE CHASE 7 8 O D 30 AUX DRAIN CONN optional y 3 4 BACK VIEW SIDE VIEW STEP DOWN IS IN 1 21 1 4 gt INCREMENTS 16 5 8 gt lt 2 3 8 2 9 x 9 229mm x 229mm KNOCKOUTS IN BOTTOM C 18 TOP VIEW p 14 3 8 N ty ty SIDE VIEW tj Depicting Step down Falseback UNIT SIZE NO FANS fale oc f 2 _ 69 42 25 to20 RETURNA 25 to 29 OPTIONAL 4 emee 25 to29 25 to 20 NOTE STEP DOWN FALSEBACK o Ero 1 THE UNIT LENGTH DOES NOT INCLUDE 5 8 END PANELS APPLICATIONS ai NOW 2 THE POWER CONNECTION IS MADE
14. However based on the current step in the test sequence the unit fan may not be powered on Refer to Manual Output Test Tracer ZN520 p 92 The wiring between the controller outputs and the fan relays and contacts must be present and correct for normal fan operation Refer to the typical unit wiring diagrams Unit wiring UV SVNO3F EN S TRANE Diagnostics Table 29 Valves stay closed Tracer ZN520 Probable Cause Explanation Normal The controller opens and closes the valves to meet the unit operation capacity requirements Requested It is possible to communicate the operating mode such as mode off off heat and cool to the controller When off is communicated to the controller the unit controls the fan to off The unit is not capable of heating or cooling when the controller is in this mode Valve override The controller can communicate a valve override request This request affects the valve operation Manualoutput The controller includes a manual output test sequence to test verify analog and binary output operation and the associated wiring However based on the current step in the test sequence the valves may not be open Refer to Manual Output Test Tracer ZN520 p 92 Diagnostic Aspecific list of diagnostics affects valve operation For more present information see Diagnostics p 90 Sampling The controller includes entering water temperature logic sampling logic that automatical
15. Room too warm X Control valve is malfunctioning Check flow of hot water through the control outside air temperature is valve peas an II Fi ili X Boiler Check the boiler reset schedule to determine SE ear ae y if the loop temperature can be decreased radiation X Steam Check the operation of the control valves X Outside air temperature is above 60 F to The economics of the unit ventilator selection 65 F dictate that in most cases the unit will be sized to provide adequate natural ventilation cooling without outside temperatures up to 60 F to 65 F Above this point a changeover should be made to the mechanical cooling cycle 90 UV SVNO3F EN S TRANE Diagnostics Problem Heating Cooling Cause Correction Room too cool X Room sensor is not properly set Reset room sensor temperature X Clogged filter Replace filter X Face and bypass damper or coil valve is Replace malfunctioning component or malfunctioning contact the control s contractor or if Trane controls see CNT SVX04A EN for more information concerning Tracer controls X OA damper is in the open position Ensure OA damper is in the closed or minimum outside air position X Boiler pressure or temperature design On hot water and steam type units check the requirements not being met boiler pressure or temperature to ensure that the requirements are being met Room too cool X Radiation controls malfunctioning Check the ope
16. S TRANE ECM Overview and Setup AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e The adapter boards contain high voltage Connections to the adapter boards changes to the CSTI configuration switches should be made only with the power to the unit disconnected The adapter boards contain high voltage Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding All settings take effect immediately including fan startup and enabling of electric heat Caution should be taken to stay clear of hazardous voltages moving parts and electric heat elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery ACAUTION Burn Hazard On electric heat units certain parameter values are locked out to prevent overheating of the unit These functions will appear to be saved however they will not be accepted if the Electric Heat Protection setting is On Do not change the Electric Heat Protection setting to Off and make changes to the protected settings unless you are programming an u
17. TRANE Installation Operation and Maintenance Vertical Unit Ventilator Classroom Unit Ventilator Model VUV Models A and later Design Sequence VUVE 750 cfm 1500 cfm SAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment January 2013 UV SVNO3F EN TRANE Warnings Cautions and Notices Warnings Cautions and Notices Note that warnings cautions and notices appear at appropriate intervals throughout this manual Warnings are provide to alert installing contractors to potential hazards that could resultin death or personal injury Cautions are designed to alert personnel to hazardous situations that could result in personal injury while notices indicate a situation that could result in equipment or property damage only accidents Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions Read this manualthoroughly before operating or servicing this unit ATTENTION Warnings Cautions and Notic
18. the following setpoint limits e Heating setpoint high limit e Heating setpoint low limit e Cooling setpoint high limit e Cooling setpoint low limit These setpoint limits only apply to the occupied and occupied standby heating and cooling setpoints These setpoint limits do not apply to the unoccupied heating and cooling setpoints stored in the controller s configuration When the controller is in unoccupied mode it always uses the stored unoccupied heating and cooling setpoints The unit can also be configured to enable or disable the local hard wired setpoint This parameter provides additional flexibility to allow you to apply communicated hard wired or default setpoints without making physical changes to the unit Similar to hard wired setpoints the effective setpoint value for a communicated setpoint is determined based on the stored default setpoints which determines the occupied and occupied standby temperature deadbands and the controller s occupancy mode Fan Switch Tracer ZN520 The zone sensor fan switch provides the controller with an occupied and occupied standby fan request signal Off Low Medium High Auto If the fan control request is communicated to the controller the controller ignores the hard wired fan switch input and uses the communicated value The zone sensor fan switch input can be enabled or 79 disabled through configuration using the Rover service tool If the zone sensor switch
19. to cooling and vice versa 82 In heating or cooling mode the controller maintains the zone temperature based on the active heating setpoint and the active cooling setpoint respectively The active heating and cooling setpoints are determined by the occupancy mode of the controller For 2 pipe and 4 pipe changeover units normal heat cool operation will not begin until the ability to conduct the desired heating or cooling operation is verified This is done using the entering water temperature sampling function for which a valid entering water temperature is required When neither a hard wired nor acommunicated entering water temperature value is present on changeover units the controller operates in only heating mode and assumes the coil water is hot The sampling function is not used The entering water temperature sampling function is used only for changeover applications and for information and troubleshooting It does not affect the operation of the controller For more information refer to the following section Entering Water Temperature Sampling Function UC400 Entering Water Temperature Sampling Function UC400 The entering water temperature sampling function is used with 2 pipe and 4 pipe changeover units and requires a valid entering water temperature value If the entering water temperature value is less than 5 F 2 8 C above a valid zone temperature value for hydronic heating and greater than 5 F 2
20. 0c eee 19 Installation Mechanical 20 Wall Box Installation 20 General Installation Checks 20 Location Considerations 21 Unit Mounting 0 0c eee eee 21 Installation Piping 00 24 Piping Installation 008 24 Refrigerant Piping 20005 25 Steam Piping 000 eee eeeee 25 Modulating Water Valves Option 25 Heating Coils with Direct Expansion Cooling eee eee ee nia eee aes 28 Installation Sensors 00 eee 29 Control Options ce eee eee 29 Installing Wall Mounted Wired Sensors 30 Location Considerations 31 Location Considerations for Wireless zone SeNSOTS 224442286032 6500258 66 5 660 08 31 Fan Mode Switch Installation 31 Zone Sensor Installation 31 Wireless Sensors 000000 cae 32 Address Setting 00000e cues 32 Observing the Receiver for Readiness to As sociate ee 33 Associating the Sensor to the Receiver 33 Testing Signal Strength and Battery Status E baa ye Oe ay eee ee eee eee 34 Configuring the Wireless Display Sensor Model WDS only 0008 35 Sensor Operations 000 ee eee 37 Wireless Sensor Specifications 40 Installation Electrical 42 VV WGI gaa amp b cantee ab ee heehee ae een 42 Electrical Wiring 0000 eens 42 Electric Heat Option
21. 41 TRANE Installation Electrical Wiring NOTICE Use Copper Conductors Only Motor data can be found in Table 5 p 11 AWARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring Electrical Wiring Improperly installed and grounded field wiring poses Unit Wiring Diagrams Specific unit wiring diagrams MRE S ELEC HROCUTION hazards 1Oavolg these os based on unit options ordered are provided inside each hazards you MUST follow requirements for field wiring A unit and can be easily removed for reference Use these installation and grounding as described in NEC and f bl vsis Wiri your local state electrical codes All field wiring MUST diagrams for connections or trouble analysis Wiring be performed by qualified personnel diagrams are attached on the inside of the front panel of the unit Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage Failure to follow these requirements could result in death or serious injury Supply Power Wiring Refer to the unit nameplate to obtain the minimum circuit ampacity MCA and maximum fuse size MFS or maximum circuit breaker AWARNING MCB to properly size field supply wiring and fuses or circuit breakers Refer to the unit operating voltage listed Hazardous Voltage on the unit wiring schematic submittal or nameplate Disconnect all electric power
22. Address set from 001 to 999 and receiver is not associated with a sensor e LED5is constantly On indicating power is applied and the receiver is functional e All models Zone temperature and cooling setpoint default to 72 5 F WDS only The heating setpoint defaults to 70 5 F and the fan system output will be 2230 Q see Output Values Failure and Default Modes of Operation Wireless Controls p 101 37 S TRANE Installation Sensors e The receiver conducts an energy scan for 20 seconds to determine the clearest channel on which to operate e LED3 flashes On every 2 seconds when it is ready to accept a sensor association request When an association request is made by a sensor the receiver instructs the sensor on which power level to operate Then the receiver and sensor begin operation at the appropriate channel and power level see Observing the Receiver for Readiness to Associate p 33 Address set from 001 to 999 and not changed since most recent power up and receiver is associated with a sensor e LED5is constantly On indicating power is applied and the receiver is functional e Zone temperature and setpoint default to 72 5 F WDS only Heating setpoint defaults to 70 5 F Fan Auto System Off e The receiver waits for a broadcast transmission from its associated sensor When atransmission is received the receiver positions its zone temperature and setpoint outputs appropriately
23. Baseboard heat Enabled Valves Enabled Fresh air damper Enabled Electric heat Enabled Baseboard heat Enabled Valves Disabled Fresh air damper Disabled Electric heat Disabled Baseboard heat Disabled Valves Enabled Fresh air damper Enabled Electric heat Enabled a The generic binary output TB4 1 TB4 2 state is unaffected by all unit diagnostics b When the entering water temperature is required but not present the Tracer ZN520 controller generates a diagnostic to indicate the sensor loss condition The controller automatically clears the diagnostic once a valid entering water temperature value is present non latching di agnostic When the entering water temperature sensor fails the con troller prohibits all hydronic cooling operation but allows the delivery of heat when heating is required In the Cool mode all cooling is locked out but normal fan and outdoor air damper operation is permitted c When the outdoor air temperature sensor has failed or is not present the Tracer ZN520 controller generates a diagnostic to indicate the sen sor loss condition The controller automatically clears the diagnostic once a valid outdoor air temperature value is present non latching di agnostic When the outdoor air temperature sensor fails or is not pres ent the controller prohibits economizer operation 91 S TRANE Diagnostics Translating Multiple Diagnostics Tracer ZN520 The controller senses and records
24. Digit 33 6 A ae UA END COVER WITH 16 7 8 CUTOUTS 2 1 2 7 Lo 1 4 for 4 pipe dynamic air and wall fin applications 5 8 6 D a 25 30 to Digit 32 D E F G H 59 Digit 33 4 4 2 1 2 a 1 4 STEP DOWN FALSEBACK END COVER WITHOUT CUTOUTS UV SVNO3F EN S TRANE Dimensions and Weights 15 S TRANE Dimensions and Weights Figure 6 Wall boxes A 42 1 8 54 1 8 66 1 8 78 1 8 DEPTH 2 1 8 A 42 1 8 54 1 8 10 3 8 66 17 8 78 1 8 A f K WEEP HOLES WEEP HOLES Ig V1 VERTICAL LOUVER V3 VERTICAL LOUVER with 1 inch recessing flange NOTE THE DIMENSIONS LISTED ABOVE ARE ACTUAL NOT NOMINAL DIMENSIONS THE VERTICAL BLADES OF THE V1 AND V3 WALL BOXES ARE SPACED 3 8 APART A 42 1 8 A 42 1 8 54 1 8 2 1 8 DEPTH 66 1 8 WEEP HOLES e A V2 VERTICAL LOUVER Square Feet of Free Area C oe e a ow omn aw e 16 78 1 8 gt WEEP HOLES V6 VERTICAL LOUVER with 1 inch recessing flange NOTE THE DIMENSIONS LISTED ABOVE ARE ACTUAL NOT NOMINAL DIMENSIONS THE VERTICAL BLADES OF THE V2 AND V6 WALL BOXES ARE SPACED 3 8 APART UV SVNO3F EN Figure 7 Crossover piping 16 5 8 DEPTH UNIT FLUSH TOP VIEW 21 1 4 DEPTH UNIT S TRANE Dimensions and Weights 7 8 I D FIELD CONN W SHUT 1 1 2 OFF VALVE RETURN 3 SUPPL
25. Failure to observe proper polarity can cause failure of the ECM Engine board the customer supplied controller or the Tracer ZN controller Verify that the signal on the VSP inputs is noise free The ECM engine board contains an adjustable noise floor parameter uFcur thatcanbe configured to reject signals below the noise floor Note If the customer supplied controller outputs signals that are below the noise threshold they will be ignored by the ECM engine Verify that VSP input settings are correct The ECM engine board contains an adjustable digital amplifier A 5c to compensate for long 10 Vdc cable runs For normalized 0 10 Vdc signals this setting should be set to 1 000 If it is set too high the motors will faster than the requested ratio and will hit the limit Ahri before the input voltage has reached its upper limit Verify that r ILo andsicLo the low motor signal output limits are set correctly 107 TRANE Replacing ECM Components AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with
26. IN THE LEFT HAND SEAL MAY INTERFERE y END POCKET FOR ALL OPTIONS BUT ELECTRIC HEAT OPTIONAL 3 THE POWER CONNECTION FOR ELECTRIC HEAT OPTION IS MADE IN THE RIGHT HAND END POCKET 4 THE UNIT SHOWN INCLUDES THE INSULATED HORIZONTAL BAFFLE OPTION STEP DOWN FALSEBACK UV SVNO3F EN 13 S TRANE Dimensions and Weights Figure 4 Dynamic air barrier unit 4 K 0 FOR PIPING OR ELECTRICAL a 2 1 4 gt 16 5 8 2 3 8 7 8 O D DRAIN TON 9 1 4 12 42 FRESH AIR OPENING ae REE 5 1 4 e a E 22 5 8 DRAIN CONN optional o t i an 11 2 1 4 lt 9 gt B gt 8 ak Pa 13 1 2 gt 12 1 4 K 2 1 4 BACK VIEW SIDE VIEW 2 9 x 9 229mm x 229mm KNOCKOUTS IN BOTTOM 2 1 4 FALSEBACK TOP VIEW FALSEBACK UNIT SIZE NO FANS 2 2 4 4 RELIES NOTE 1 THE UNIT LENGTH DOES NOT INCLUDE 5 8 END PANELS 2 THE POWER CONNECTION IS MADE IN THE LEFT HAND END POCKET FOR ALL OPTIONS BUT ELECTRIC HEAT 3 THE POWER CONNECTION FOR ELECTRIC HEAT OPTION IS MADE IN THE RIGHT HAND END POCKET 14 UV SVNO3F EN Figure 5 End covers 5 8 a w PZN Digit 33 1 Digit 33 4 30 A yo 2 1 2 R 2 1 4 END COVERS WITHOUT CUTOUTS 0 8 Pe 5 m M 1 gt N Digit 33 2 Digit 33 5 2 7 114 30 y 2 1 2 END COVERS WITH 7 1 4 CUTOUTS 2 1 4 for 2 pipe applications Pp uo 5 u
27. PPE required for the work being undertaken ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE When working with or around hazardous chemicals ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels proper respiratory protection and handling instructions If there is a risk of arc or flash technicians MUST put on all PPE in accordance with NFPA 70E or other country specific requirements for arc flash protection PRIOR to servicing the unit Failure to follow instructions could result in death or serious injury UV SVNO3F EN AWARNING Hazard of Explosion and Deadly Gases Never solder braze or weld on refrigerant lines or any unit components that are above atmospheric pressure or where refrigerant may be present Always remove refrigerant by following the guidelines established by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrigerant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refrigerants and air under pressure may become combustible in the presence of an ignition source leading to an explosion Excessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids Failure to follow all proper safe refrigerant handling practices could result in death or se
28. Preset program selection options Possible week blocks and individual days a VVVVV es 11 Addie sonja EURF AMAA Ae i i m Nic P AA al Deleting Programs 1 Press the Menu button and then press OK until the ON hour time display of the program you want to delete is blinking 2 Use the to select and then press OK Important Switching programs must be deleted in ON OFF pairs When you delete a single ON instruction you must also delete the corresponding OFF instruction Daylight Savings Time Note Use 1h button to make the change to and from Daylight Savings Time 66 e Press the 1h button see Figure 57 to add 1 hour to the current time Press the 1h button again to subtract 1 hour from the current time Figure 57 Daylight Savings Time Res Menu OF TARE o ah f Override Program Manual To override the program press the OVR button see Figure 58 Toggle between the unoccupied and occupied C states by pressing the OVR button Figure 58 Manual program override We AUT e haa Note When you override the program the override remains in effect until the next programming event or until you press OVR again UV SVNO3F EN S TRANE Wired Controllers Communication Wiring Wiring Installation ZN520 Tracer ZN520 controllers are LonTalk devices that interface with the Trane Tracer
29. Setup Figure 48 ECM engine label 1 To check status configuration or to change settings on the engine board with the power on the unit detach the low voltage access lid and look or reach through the low voltage access panel 2 The ECM engine label is affixed to the back or front of the low voltage access lid 50 The ECM engine board features a nested menu integrated user interface UI that supports 1 Status display for instant touch free confirmation of unit Operation 2 Configuration parameter and value display and modification changes using integrated menu set buttons 3 Error code prioritized reporting Status Display Figure 49 Status display a mm s Lh Lle L The ECM engine board contains a four digit seven segment display that is used to present information in a format close to real world language while having a small form factor Most characters are immediately recognizable however please consult Table 9 and Table 10 for the graphical representation of each alphanumeric character Table 9 Screen representation of alphabetical characters A B C D E F G H I J K L A b d E F JG HI J HL n O P Q R V j V W X Y Z uU D P re G Ef Cc Table 10 Screen representation of numeric characters 1 2 3 4 5 6 7 8 9 0 I e J3 4 5 E T 8 J GC Note Characters on the ECM engine board display appear in red on a black background The display
30. Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e The adapter boards contain high voltage Connections to the adapter boards should be made only with the power to the unit disconnected All settings take effect immediately including fan startup enabling of electric heat Caution should be taken to stay clear of hazardous voltages moving parts and electric heat elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery 57 S TRANE ECM Overview and Setup The ECM engine board provides additional temperature controlled logic to help coordinate certain electric heat and valve logic functions e On units with electric heat and a changeover coil the engine board and adapter boards are pre configured to cause hydronic heat and electric heat to be mutually exclusive On units with ComfortLink controls
31. UV SVNO3F EN Fan Other Outputs Valves Closed Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Open Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Closed Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Closed Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Enabled 5 Fresh air damper Enabled Electric heat Enabled Baseboard heat Off Valves Open Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Closed Fresh air damper Closed Electric heat Off Baseboard heat Off Valves Enabled Fresh air damper Minimum position Electric heat Enabled Baseboard heat Enabled Valves Enabled Fresh air damper Enabled Electric heat Enabled Baseboard heat Enabled Valves Enabled Fresh air damper Enabled Electric heat Enabled Baseboard heat Enabled transformer mounting box Replace with Trane fuse X1311057435 ABC type 6A 250V Table 26 Tracer ZN520 diagnostics Diagnostic CO2 Input failure On Maintenance On required Local fan mode On failure Local setpoint On failure Invalid unit Off configuration Normal power On up Fan Other Outputs Valves Enabled Fresh air damper Enabled Electric heat Enabled Baseboard heat Enabled Valves Enabled Fresh air damper Enabled Electric heat Enabled Baseboard heat Enabled Valves Enabled Fresh air damper Enabled Electric heat Enabled
32. affects valve operation For more present information see Diagnostics p 90 Sampling The controller includes entering water temperature logic sampling logic that automatically invokes during 2 pipe or 4 pipe changeover to determine if the entering water temperature is correct for the unit operating mode The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actual end device the valves may not work correctly Unit configuration The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to the typical unit wiring diagrams Unit wiring 93 S TRANE Diagnostics Table 31 Electric heat not operating Tracer ZN520 Probable Cause Explanation Normal The controller cycles electric heat on and off to meet the operation unit capacity requirements Requested It is possible to communicate the operating mode such as mode off off heat cool to the controller When off is communicated Communicated Numerous communicated requests may disable electric disable Manual output test Diagnostic present Unit configuration No power to the controller Unit wiring ECM Motor Control Board Failure Hot water is present ona changeover unit to the controller the units shuts off the electric heat heat including an auxiliary heat enable input and
33. air damper actuator can be used for two position control Two position control can be achieved by not providing an outdoor air temperature neither hard wired nor communicated to the controller and by setting the damper minimum position using the Tracer TU service tool to the desired value typically 100 percent Electric Heat Operation UC400 The UC400 controller supports both SCR modulating and staged electric heat 1 or 2 stages SCR heat is onlya field installed option In a unit configured with staged electric heat the electric heating circuit s are cycled ON and OFF appropriately to maintain the desired space temperature at the active heating setpoint In a unit configured with SCR modulating electric heat the UC400 will send a 0 to 10 Volt DC signal to adjust SCR capacity in order to maintain the desired space temperature In both staged and modulating electric heat applications the simultaneous use of electric and hydronic heat is not supported and the UC400 will operate electric heat only when hot water is not available for example in a changeover unit In addition the UC400 will run the supply fan for 30 seconds after electric heat is turned OFF in order to dissipate heat from the unit Note This delay does not apply to steam or hydronic heating Factory configured electric heat units have built in mechanical protections to prevent dangerously high discharge air temperatures Dehumidification Operation UC4
34. an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury FINI AN Me Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e The BLDC motors contain capacitors which store residual energy Please keep clear of the fan wheels for5 minutes after the power has been removed from the system as a power request with the motor powered off could result in a very short period of actuation Unplugging the motor is adequate to ensure that there will be no power request The adapter boards contain high voltage Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding Initial hookups to the CSTI and standard adapter board including low voltage interconnections must be made with the power off Do not make connections to the motors or the adapter boards while power is ON Do not remove connections to the motor or the adapter boards while the power is ON Caution should be taken to stay clear of hazardous voltages moving parts and electric heat elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for c
35. and cooldown sequence to keep the fresh air damper closed during the transition from unoccupied to occupied This is an attempt to bring the space under control as quickly as possible It is possible to communicate the operating mode such as off heat cool to the controller When off is communicated to the controller the unit closes the fresh air damper Manual output The controller includes a manual output test sequence that test Diagnostic present Unit configuration No power to the controller Unit wiring verifies analog and binary output operation and associated output wiring However based on the current step in the test sequence the fresh air damper may not be open Refer to Manual Output Test Tracer ZN520 p 92 A specific list of diagnostics effects fresh air damper operation For more information see Diagnostics p 90 The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actual end device the damper may not work correctly If the controller does not have power the fresh air damper does not operate For the controller to operate normally a 24 Vac input voltage must be applied When the green LED is off continuously the controller does not have sufficient power or has failed The wiring between the controller outputs and the fresh air damper must be present and correct for normal damper operat
36. as necessary Piping connection knockouts are shown in Dimensions and Weights p 11 Field connection types and sizes for unit coils are listed in Table 8 These sizes are provided for field piping connection Table 8 Coil data for field piping Coil type Connection location Field connection size 4 pipe chilled water Left or right opposite 7 8 in OD 5 8 in OD hot water ends 2 pipe changeover coil Left or right 7 8 in OD Hot water only Left or right 7 8 in OD Steam Left or right 1 in MPT Chilled water electric Left cooling 7 8 in OD heat Chilled water steam Left or right 7 8 in OD 1 in MPT DX Left 7 8 in suction 3 8 in DX hot water Left cooling right 7 8 in suction heating 3 8 in 5 8 in OD DX steam Left cooling right 7 8 in suction heating 3 8 in 1 in MPT DX electric heat Left cooling right 7 8 in suction heating 3 8 in NA A 7 8 in OD condensate drain connection is provided on the chilled water supply end of the unit 1 Attach a flexible condensate drain hose over the drain pan connection and secure with a hose clamp The drain pan on the vertical is vacuum molded with a drain connection and P trap on the cooling coil connection side Note Condensate removal to the main system should be made through the bottom of the unit ventilator If other location for condensate removal is desired a specific field cut out for the connection should be made in the back of the unit v
37. at this point refer to thermistor function for more information 3 OPTIONAL While the fan is running if practical change the fan speeds and observe the display temporarily indicate rAniP Exercise all fan speeds to ensure positive unit response and to validate any field wiring Congratulations Your new Trane BLDC Engine Motor system is performing properly UV SVNO3F EN Time Clock Setting the Time Clock The Time Clock must be programmed for the unit to operate If not programmed the unit may not run in the correct occupied unoccupied state until timing instructions are received from the Time Clock Note Power must be supplied to the unit for the time clock to be set The following procedure covers e setting the time format e setting the current time and day e setting the program ON OFF settings events e pre set program selections e deleting programs e daylight savings setting e overriding programs manually Figure 54 Time clock 1 Time format display 2 Day display 3 LED display The time clock see Figure 54 is located behind the access door of a Unit Ventilator Reset the Time Clock To clear any programs that may exist from the factory press the reset button Res Note The time clock uses Standard Time If you are programming during Daylight Savings Time one hour should be subtracted from times needed see Daylight Savings Time p 66 For example if the Daylight
38. avoid dropping of unit l l l reposition lifting point if unit is not level Failure to 9 Ensure the unit rests tightly against the wall Check for properly lift unit could result in death or serious injury proper seal and that air does not leak underneath the or possible equipment or property only damage unit Subbase Option A subbase may be used to increase the unit height and aid Note Care should be taken when handling the unit to in leveling the unit The subbase is shipped separately for ensure that the front return air grille does not field installation Slots and leveling screws are provided bend on the subbase 7 Set the unit into selected location and adjust leveling legs if necessary to ensure level fit 8 Push the unit tightly against the wall to compress the 1 Remove the leveling legs provided with the unit see seal on the back edge of the unit and intake opening Figure 12 Anchor the unit by using the 1 2 in mounting holes in both end pockets Units containing a falseback The falseback unit ventilator contains mounting holes located on the 22 UV SVNO3F EN Figure 12 Subbase with leveling legs Unit Base Weld Nuts Subbase For leveling legs 2 Setthe unit on the subbase and fasten with four 3 8 in x 16 ft x 1 in hex head cap screws and 3 8 in lock washers Note Hex screws and lock washers are provided by the factory They are located in a baggy and are used to attach the base to the
39. conform to NEC Class 2 wiring requirements and any state 42 UV SVNO3F EN and local requirements Refer to the following table for the wire size range and maximum wiring distance for each device Important Donotbundle or run interconnection wiring in parallel with or in the same conduit with any high voltage wires 110 V or greater Exposure of interconnection wiring to high voltage wiring inductive loads or RF transmitters may cause radio frequency interference RFI In addition improper separation may cause electrical noise problems Therefore use shielded wire Belden 83559 83562 or equivalent in applications that require a high degree of noise immunity Connect the shield to the chassis ground and tape at the other end Note Do not connect any sensor or input circuit to an external ground connection Supply Power Power supply wiring is to be connected to terminals 1 and 2 at the junction box in the left end pocket below the discharge air grille NOTICE Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors could result in equipment damage Electric Heat Option AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death
40. controller is properly booted and ready for the application code If the power LED flashes red a fault condition exists UV SVNO3F EN Pre Start Pre Start up Checklist Before energizing the unit the following system devices must be checked O O Is the high voltage power supply correct and in accordance with the nameplate ratings Is the field wiring and circuit protection the correct size Is the low voltage control circuit wiring correct per the unit wiring diagram Is the piping system clean complete and correct Is unit serviceable See Dimensions and Weights p 11 Are all the unit access panels secure and in place Is the water flow established and circulating through all the units Is the condensate line properly sized run trapped and pitched Does the indoor blower turn freely without rubbing Has all work been done in accordance with applicable local and national codes Has heat transfer fluid been added in the proper mix to prevent freezing if required UV SVNO3F EN 71 Tracer ZN520 Unit Startup Refer to the most recent version of Trane publication CNT SVX04A EN Tracer ZN520 Unit Controller Installation Operation and Programming Guide The factory pre programs the ZN520 with default values to control the temperature and unit airflow Use Tracer Summit building automation system or Rover software to change the default values Follow the procedure below to op
41. ees 91 Output Testing and Diagnostics UC400 95 UV SVNO3F EN Output Testing UC400 95 Diagnostics UC400 95 Troubleshooting Wireless Controls 96 Troubleshooting Tracer ZN520 102 Troubleshooting UC400 103 Troubleshooting ECM 105 General Information ECM 106 Troubleshooting Information ECM 106 Replacing ECM Components 108 Circuit Modules Replacement Notes Work In SEPUICHONS sisrsiseni dad eta oh a ge RE 109 Softsetting the IMC Address of an ECM En gine Module 00 0c eee eee 110 TRANE Model Number Descriptions Vertical Unit Ventilator Model Number Digits 1 2 3 Unit Configuration VUV Vertical Unit Ventilator Digit 4 Development Sequence E Digits 5 6 7 Nominal Airflow 075 750 cfm 100 1000 cfm 125 1250 cfm 150 1500 cfm Digit 8 Voltage Volts Hz Phase O 115 60 1 1 208 60 1 2 230 60 1 3 208 60 3 4 460 60 3 7 277 60 1 8 230 60 3 Digit 9 Open Digit 0 Digits 10 11 Current Design Sequence Digit 12 Face amp Bypass Y Yes Include Damper N No Damper Digit 13 Unit Arrangement Return Air Front Fresh Air Back 100 Return Air Front 100 Fresh Air Back Dynamic Air Barrier ERS Compatible w RH Connection ERS Compatible w LH Connection Digit 14 Preheat Reheat Changeover oO1RWORNDM Hou ud ue
42. electric heat Unaffected Generic AIP Invalid or missing e Fan Unaffected Informational Informational failure value for generic e Valves Unaffected analog input e Outdoor air damper Unaffected e DX cooling electric heat Unaffected Local fan Invalid or missing e Fan Unaffected Automatic mode failure fan speed switch e Valves Unaffected reverts to default Outdoor air damper fan speed Unaffected e DX cooling electric heat Unaffected Local Invalid or missing e Fan Unaffected Automatic setpoint value for zone e Valves Unaffected failure temperature e Outdoor air damper setpoint reverts to Unaffected default setpoint e DX cooling electric heat Unaffected a For detailed information about zone temperature control methods refer to Zone Temperature Control UC400 p 81 96 Troubleshooting Wireless Controls Locations of LEDs Test button Test Symbols and Error Codes The receiver for all models has four LEDs LED1 LED2 LED3 and LED5 Figure 65 shows their locations Note To view LEDs on a flush mount receiver on a fan coil unit the front panel of the unit must be removed Figure 65 LED locations on the receiver FS LLL 1 WIRELESS Pb FREE INSTALL
43. fan behavior change regardless of whether the end device fails to actuate due to device failure or safety down stream lockouts The ECM engine board also coordinates the operation of Electric Heat Electric Hydronic Heat lockouts and CSTI Changeover coil operation Troubleshooting Information ECM General system troubleshooting tips ECM e ECM engine configuration must perfectly match the factory supplied ECM Refer to ECM Overview and Setup p 45 for troubleshooting configuration of the engine board e The ECM engine will display troubleshooting information and contains dual tachometers to aid in performance verification e Under normal circumstances the ECM engine display will display the operational status of the motors and electric heat circuit sensors however a malfunction will drive a priority display mode that will present the error code instantly to the screen The error must be cleared by solving by powering down removing the cause of the problem and restarting the engine board e Engine Label setup document affixed to the back of the low voltage access lid should be used to verify engine configuration settings e For proper operation of the system all plugs must be firmly seated in all boards and motors Insecure 106 connections will cause malfunction and the system will shutdown e Do not unplug or plug in motors or connectors while the system is receiving a speed request of any ki
44. in death or serious injury A 36 inch clearance at the unit front is sufficient for maintenance and service of the equipment Unit size 16 5 8 16 5 8 21 1 4 21 1 4 470 14 x 20 x 1 2 14 x 24 x 1 1 14 x 20 x 1 2 14 x 24x 1 2 14 x 30 x 1 1 14 x 24 x1 1 14 x 30 x 1 1 Dynamic air filter nominal size in and quantity 7 x 42 x 1 1 7x 54x 1 1 7 X 66 x 1 1 7x78 x1 1 Drain connection size in Fan type quantity Motor data Coil volume gal Coil type A 0 178 BjO 311 Cj0 311 DIO 444 E 0 444 FIO 610 G 0 610 H 0 395 Table 6 Control Methodology Fan Speed FSS 3 or infinite CSTI 3 or infinite ZN520 3 UC400 Infinite a With a field supplied 2 10 Vdc controller UV SVNO3F EN 7 8 I D hose 7 8 1 D hose 7 8 I D hose 7 8 1 D hose FC 2 FC 2 FC 4 FC 4 Quantity 1 1 2 2 Horsepower each 1 4 1 4 1 4 1 4 Table 7 Control Sequences Fan Speeds DX operation 1 Electric heat operation 1 Sidewall Exhaust 2 ERSA 5 2 a Fan speed during sequence operation b Unit Ventilator when operating with option 11 S TRANE Dimensions and Weights Figure 2 Standard depth unit 4 K O FOR PIPING OR ELECTRICAL 22 5 8 i 12 1 2 FRESH AIR OPENING OPTIONAL 3 3 4 2 1 4 lt 9 B ee S 8 1 8 3 4 13 1 2 gt 12 1 4 lt BACK VIEW 2 9 x 9 229mm x 229mm KNOCKOUTS IN BOTTOM 16 5 8 2 3 8 gt 7 8 O D DRAIN C DaN 9 1 4
45. including remote Reference the wiring schematic for specific wiring disconnects before servicing Follow proper lockout connections tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power Note All field wiring should conform to NEC and all before servicing could result in death or serious injury applicable state and local code requirements The control panel box Is always on the end opposite the piping connections Access the control box by NOTICE removing the two screws that secure the front m l cover This will allow the panel to be removed to Equipment Damage provide access to the electrical components Wiring diagrams provided in this manual are for reference only Actual wiring for particular options units could vary Refer to the diagram provided on the If the unit does not have a disconnect switch the power leads and capped ground wire are inside the control panel equipment for specific information Failure to follow If the ant has a disconnect switch the power leads are recommendations above could result in premature wired to the junction box switch on the control panel Pull motor failures or equipment damage the capped ground wire into the junction box Do not remove or alter the wiring of the time delay Electrical Grounding Restrictions All sensor and relay DL Failure to do so could result in equipment input circuits are normally at or near ground common failure
46. into the auxiliary drain pan if a factory installed auxiliary pan is ordered All field piping condensate connections should be made at the auxiliary drain pan Installation Crossover Piping Crossover piping is available for all hydronic coils It is either 1 3 8 in 34 9 or 2 1 8 in 54 in diameter OD as specified by the customer Crossover piping can be found in either the left or right hand end pocket Refer to Dimensions and Weights p 11 for dimensional data On 4 pipe coils crossover piping connects to the main cooling coil Factory insulation is provided on all crossover piping When a Trane piping package is ordered it is installed with the connections made to the supply and return of both the coil and the crossover piping However supply and return connections must be made in the field when a piping package is furnished by the installer The crossover piping is located at the back of the unit along the wall and the ends of the piping are flush with the end of the unit Expansion compensation between the piping package and the crossover piping is achieved using flex hoses rated at 250 psi working pressure Expansion compensation for the crossover piping must be handled external to the unit ventilator Split System Units The following refrigerant piping and interconnecting wiring instructions apply to unit ventilators with direct expansion type cooling coils used in conjunction with air cooled conde
47. is in operating mode and at the home screen 36 212 occupancy disabled 2 Press the up and down arrows for 3 seconds The arrow indicates setpoint display as shown in the figure UV SVNO3F EN Arrow indicates setpoint is shown on display Setpoint Temperature Locking or Unlocking Settings You can lock or unlock the setpoint system or fan setting to prevent changes To lock or unlock a setting 1 Verify that the sensor is in operating mode and at the home screen 2 Choose a setting to lock or unlock e Select the setpoint by pressing the up or down arrow gt E _ I Vic Setpoint e From the system menu press the down arrow to select the fan menu Use the left or right arrow to choose the setting Fan menu 3 Press the left and right arrows for 4 seconds Note If you try to access a feature that is locked the locked symbol will appear on the display If you press a keypad button to try change a locked setting the locked symbol will flash UV SVNO3F EN S TRANE Installation Sensors Sensor Operations Temporary Occupancy Timed Override Temporary occupancy timed override is available on model WDS Temporary occupancy is selected for after business hours adjustment of temperature setting fan settings or heat cool settings when the system has changed to unoccupied mode System control will revert to unoccupied after a pre determined time period Note Not all
48. low voltage lid on every unit The following table lists the parameter names and typical settings of the ECM engine board for reference only Additional Notes 1 This list is applicable only to Fan coil and Force Flo products 2 Do not change the electric heat protection settings if your unit has electric heat UV SVNO3F EN S TRANE ECM Overview and Setup Ifthe format setting for rom values are not correct i e not four digit XXXX please check the operation mode of the ECM engine boardiiod andriod 2 and motor signal output format 5 9 I and5 Ye 61 S TRANE ECM Overview and Setup Table 13 Configuration settings of the ECM engine board Description on Unit Label Mtr 1 High Spd Mtr 1 Med Spd Mtr 1 Low Spd EHStg1 Mtr1 Spd User Interface Name H nd Lo E dhil Typical User Interface Value 080 TW 63e F Description Sets the high speed rpm for Motor 1 Sets the medium speed rpm for Motor 1 Sets the low speed rpm for Motor 1 Assigns an rpm to be associated with a call for 1st stage electric heat for Motor 1 only on units equipped with electric heat EH Stg 2 Mtr 1 Spd AI High Spd Mtr 1 AI Low Spd Mtr 1 Mtr 2 Hgh Spd Eii l Ahri Acri l Hic Assigns an rpm to be associated with a call for 2d stage electric heat for Motor 1 only on electric heat equipped units Sets the maximum rpm for Motor 1 for the maximum input value of th
49. near the bottom of the unit Filter sizing may be found in Table 5 p 11 1 To remove the filters take off the air section s front panel UV SVNO3F EN S TRANE 2 Slide the filter out of the filter rack on the bottom of the unit 3 Replace old filter with new filter and re attach front panel NOTICE Equipment Damage Do not operate unit without filters or grilles in place Failure to do so may cause equipment failure Cleaning of the Drain Pan The unit ventilators drain pan is removable for periodic cleaning or easy access for maintenance drainage issues Use Figure 60 and Figure 61 p 88 and the following steps for removing the drain pan AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Turn off power to the unit and remove the front panel Disconnect the condensate drain line from the P trap Disconnect fan plug Rw N gt Remove 4 pan clips located at each end of the pan s front 5 Disconnect the fan board ground wire and slide out fan board see Figure 60 6 Remove drain pan for cleaning see Figure 61 p 88 7 When reinstalling reverse sequence Figure 60 Slide out fan board 87 S TRANE Maintenance Removal of d
50. noise Connecting Wires To connect the wires 1 Disconnect power to the transformer 2 Connect the 24Vac secondary wires from the transformer to the 24Vac and me terminals on the UC400 controller refer to the illustration below 3 Do one of the following to ensure the controller is adequately grounded e Connectagrounding pigtail atsome pointalong the secondary wire that runs between the controller terminal and the transformer e Ground one ofthe ay terminals on the controller to the enclosure if the enclosure is adequately grounded or to an alternate earth ground 70 24Vac transformer A pigtail connection may be necessary between earth ground and or enclosure ground if the device is not grounded through one leg of the transformer wiring la Alternate ground method ol LA Niche vate ASE tg ng I i J ETE tO ade Uy oT SERVICE BO1 BO2 BO3 B04 BO5 BO6 BO7 BO8 BO9 e 0 oo 8882828 Power ON Check To perform a Power ON check 1 Verify that the 24Vac connector and the chassis ground are properly wired 2 Remove the lockout tagout from the line voltage power to the electrical cabinet 3 Energize the transformer to apply power to the UC400 controller 4 Observe the UC400 controller when power is applied to verify the power check sequence as follows a The power LED lights red for 1 second b The power LED lights green e lf the sequence above is completed as described the
51. of the fan wheels capacitors before servicing Follow proper lockout for5 minutes after the power has been removed from tagout procedures to ensure the power cannot be the system as a power request with the motor inadvertently energized For variable frequency drives d off id iti h iod of or other energy storing components provided by Trane POWEICE OM COMOTESU T IA VEry suer PENGO or others refer to the appropriate manufacturer s actuation literature for allowable waiting periods for discharge of All settings take effect immediately including fan capacitors Verify with an appropriate voltmeter that all startup and enabling of electric heat Caution should capac ors have discharged Failure to disconnect be taken to stay clear of hazardous voltages moving power and discharge capacitors before servicing could ae parts and electric heat elements while making result in death or serious injury MP a OS S adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery The adapter boards contain high voltage Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding Changes to swit
52. of the unit for crossover piping The outside air opening is located in the lower back of the unit and the path to the wallbox on the outside wall should be unobstructed 4 The physical layout of the room should accommodate any accessories ordered with the unit Conditioned air is distributed through the grille on top of the unit and returned through the return air grille on the bottom of the unit Avoid placing any objects that may obstruct either grille or interfere with airflow UV SVNO3F EN S TRANE Installation Mechanical 5 Internal access to the unitis provided by the removable front panel Sufficient space should be allowed to lift the panel for maintenance purposes 6 Ensure the floor surface is level Note The unit leveling legs can be adjusted to accommodate slight out of level installation surfaces Unit Mounting Note All wall intake boxes should be installed prior to mounting the unit ventilator Refer to p 20 for wall box installation instructions The 1 2 in mounting or anchoring holes are located on the back of the unit on each end see Figure 11 p 22 Note All mounting fasteners are to be provided by the installer 21 S TRANE Installation Mechanical Figure 11 Mounting hole location F p cssscss O E a O iene O i i i i i i i i 0 i i a C cl i i 0 6 i a 0 i 8 Q i Q Q i i 8 Q I i i a eae O
53. or communicated to determine whether the entering water can be used for the desired heating or cooling If the water temperature is not usable for the desired mode the controller continues to compare the entering water temperature against the effective space temperature for a maximum of three minutes The controller automatically disables the entering water temperature sampling and closes the main hydronic valve when the measured entering water exceeds the high entering water temperature limit 110 F When the entering water temperature is warmer than 110 F the controller assumes the entering water temperature is hot because it is unlikely the coil would drift to a high temperature unless the actual loop temperature was very high lf the entering water temperature is unusable too cool to heat or too warm to cool the controller closes the hydronic valve and waits 60 minutes before initializing another sampling If the controller determines the entering water temperature is valid for heating or cooling it resumes normal heating cooling control and effectively disables entering water temperature sampling until it is required Electric Heat Operation Tracer ZN520 The Tracer ZN520 controller supports one or two stage electric heat operation for heating To control the space temperature electric heat is cycled to control the discharge air temperature The rate of cycling is dependent upon the load in the space and the temperature
54. point that the motor will turn on will be above the Acii land Acie value The full range of motor control will not be fully utilized in this case as the motor will never reach the low speed motor analogue input scaling value for Motor 1 and Motor 2 Au r and Acie 3 Themaximum output of the controller needs to be 10V or if lower needs to be compensated using the analog input scaling value A 5c to normalize the operational range As a default the scaling value is set to 1 00 so a voltage of 5V will be graded as 5V however to compensate for long runs or lower max voltages i e lower than 10 00 the scaling value can be increased accordingly to maximize operational range 56 For example if the voltage is only reaching a value of 9 0V at the adapter boards then the A 5c parameter should be setto 10 9 i i If left un calibrated the unit will never attain maximum speeds defined as Ahri land Ahri 4 The ECM engine can accept slightly over biased inputs up to 12 Vdc and the A 5c parameter can be set to a value less than 1 0 to compensate VSP Setup Examples Example 1 uFur set too high and A 5c set too high 10V 7 No controller authontiy Max Controller Output beyond this level A Se Variable Speed Range uF L r Min Controller Output OV Fan Off Controller ignored Example 2 uFur set too high but A 5c set correctly 10y ASe Max Controller Ouiput Variable Speed Range uFir 0V
55. prevent coil freezing This includes unoccupied mode when there is no call for Capacity or any other time the fan is OFF Outdoor air damper remains closed UC400 Explanation The wiring between the controller outputs and the outdoor air damper must be present and correct for normal outdoor air damper operation Refer to applicable wiring diagram Check damper actuator to ensure proper operation If the controller does not have power the outdoor air damper does not operate For the controller to operate normally apply an input voltage of 24 Vac If the Marquee Power LED is OFF continuously the controller does not have sufficient power or has failed Several diagnostics affect outdoor air damper operation For detailed information about these diagnostics refer to Table 34 p 95 The controller opens and closes the outdoor air damper based on the controller s occupancy mode and fan status Normally the outdoor air damper is open during occupied mode when the fan is running and closed during unoccupied mode The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device the outdoor air damper may not work correctly The controller includes both a morning warm up and cool down sequence to keep the outdoor air damper closed during the transition from unoccupied to occupied This is an attempt to bring the space under contr
56. smart reset function If another diagnostic of this type occurs again within 24 hours after an automatic clearing clear the diagnostic manually by using any of the ways listed under the preceding section Manual Latching Diagnostics UC400 Informational Diagnostics UC400 Informational diagnostics provide information about the status of the controller They do not affect machine operation but can be cleared from the controller using the BAS or Tracer SC Table of Diagnostics UC400 Table 34 lists each diagnostic that can be generated by the UC400 controller the diagnostic effect on outputs consequences and diagnostic type Note The generic binary output is unaffected by diagnostics Table 34 UC4000 diagnostics Diagnostic Diagnostic Probable Cause Consequences Type Filter change Fan run hours e Fan Unaffected Informational required exceed the time set Valves Unaffected to indicate filter e Electric heat change Unaffected Condensate The drain pan is full Fan OFF Manual overflow of water e Valves Closed e Outdoor air damper Closed e DX electric heat OFF Low coil The leaving fluid e Fan OFF Smart reset temp temperature may be Valves Open Manual detection close to freezing e Outdoor air damper Closed e DX electric heat OFF Low airflow The fan drive belt Fan OFF supply fan contactor or motor Valves Closed failure has failed e Outdoor air damper Closed DX electric heat OFF Manu
57. standoffs affixed to the replacement modules can be removed if necessary so the new module circuit board can be attached to the retained standoffs Figure 67 Depress latch to remove PCB leaving standoff attached to the metal panel 2 If replacing the ECM engine module special care should be taken to avoid electro static discharge damage Please use an ESD protection wrist strap and frequently touch a grounded surface with unit power off to discharge any static buildup 3 Replace connectors carefully onto the appropriate board For units with a green wire attached to the CSTI or standard adapter boards please ensure that the green wire is attached to the engine board white connector as shown in Figure 68 Figure 68 Green wire attached to white plug on blue ECM engine board and to quick connect terminal on the adapter board 4 Ensure that the new ECM engine controller is configured to match the ECM engine configuration label that is present on the unit It is necessary to configure the ECM engine board to avoid improper UV SVNO3F EN S TRANE Replacing ECM Components operation of the unit discomfort to the end user and loud fan operation 5 Ensure that the CSTI adapter board switches are set correctly as indicated on the attached unit schematic where applicable Figure 69 N o gt gt C Ly 20 KA 6 After replacing modules commission the unit by performing at a minim
58. unit ventilator Pre drilled slots in the subbase flange will line up with the weld nuts in the bottom of the unit 3 The bottom of the subbase has weld nuts in four slots Place the leveling legs in those slots and level the unit End Panels When ordered as an option end covers ship already attached to the vertical unit ventilator The following section is for installing end covers purchased as an add on It is recommended end panels be installed on the unit ventilator after all piping wiring and accessory installation is completed To install the end panel 1 Insert the four factory provided metal studs into the four pre mounted nuts on the inside of the panel 2 Align each stud with the four pre drilled holes on the side of the unit 3 Secure the panel to the unit by fastening with the four factory provided nuts 4 Do not overtighten screws NOTICE Equipment Damage Do not run units for any length of time without all panels and filters properly installed Failure to do so could result in equipment failure UV SVNO3F EN S TRANE Installation Mechanical 23 TRANE Installation Piping Piping Installation Before installation of piping package the shipping bracket holding the piping in place must be removed Proper installation of piping is necessary to provide efficient coil operation and to prevent damage during operation Follow standard piping practices and include all accessories
59. 00 The UC400 controller supports space dehumidification when e Mechanical DX or hydronic cooling is available e The heating capacity is located in the reheat position UV SVNO3F EN e The space relative humidity is valid The space relative humidity can be a BAS communicated value or come directly from a wired relative humidity sensor The controller begins to dehumidify the space when the space humidity exceeds the humidity setpoint The controller continues to dehumidify until the sensed humidity falls below the setpoint minus the relative humidity offset Peer to peer Communication UC400 Peer to peer communication is accomplished by means of custom TGP2 programming in the Tracer SC system controller or via hard wiring only between controllers Unit Protection Strategies UC400 The following unit protection strategies are initiated when specific conditions exist in order to protect the unit or building from damage e Smart reset e Low coil temperature protection e Condensate overflow e Fan status e Fan off delay e Filter maintenance timer e Freeze avoidance e Freeze protection discharge air temperature low limit Smart Reset UC400 The UC400 controller will automatically restart a unit that is locked out as a result of a Low Coil Temp Detection BI3 diagnostic Referred to as smart reset this automatic restart will occur 30 minutes after the diagnostic occurs If the unit is successfully restarted
60. 1 Entering water 40 F to 212 F input 1 temperature J3 2 Analog ground NA Analog J3 3 Discharge air 40 F to 212 F input 2 temperature J3 4 Analog ground NA Analog J3 5 Fresh air temp generic 40 F to 212 F input 3 temp J 3 6 Analog ground NA Analog J3 7 Universal input 0 to 100 input 4 Generic 4 20mA 0 to 100 Humidity O to 2000 ppm CO2 J3 8 Analog ground NA Ground J3 9 Analog ground NA Notes 1 The zone sensor entering water temperature sensor discharge air sensor and the outside air temperature sensor are 10KQ thermistors 2 Zone sensor Wall mounted sensors include a thermistor soldered to the sensor s circuit board Unit mounted sensors include a return air sensor in the units return air stream 3 Changeover units include an entering water temperature sensor Zone Sensor Tracer ZN520 The Tracer ZN520 controller accepts the following zone sensor module inputs e Space temperature measurement 10kQ thermistor e Local setpoint either internal or external on the zone sensor module e Fan switch e Timed override On and Cancel timed override e Communication jack Space Temperature Measurement Tracer ZN520 Trane zone sensors use a 10kQ thermistor to measure the space temperature Typically zone sensors are wall mounted in the room and include a space temperature thermistor As an option the zone sensor can be unit mounted with a separate space temperature thermistor located in the unit s r
61. 6 03 unit 2 speed Figure 27 Wall mtd temp sensor SP OCC UNOCC OALMH COMM X13790842 02 wall X13651467 01 comm UV SVNO3F EN S TRANE Figure 28 Wall mtd display sensor SP OCC UNOCC COMM maw X13790886 04 wall 3 speed Figure 29 Wall mtd display sensor SP OCC UNOCC COMM E maw X13790886 03 wall 2 speed Figure 30 Unit mtd FSS OALMH wall mtd temp sensor SP OCC UNOCC COMM X13511527 01 wall X13790849 01 unit a X13651467 01 comm Su Figure 31 Unit mtd FSS OALMH wall mtd display temp sensor SP OCC UNOCC COMM E at X13790886 04 wall X13790841 02 unit 29 S TRANE Installation Sensors Figure 32 E Figure 33 Figure 34 Om Figure 35 AAD mw e 30 Unit mtd FSS OLH wall mtd display temp sensor SP OCC UNOCC COMM X13790886 03 wall X13790475 01 unit Wireless temp sensor SP OCC UNOCC OALMH COMM X13790492 01 wall X13790855 01 unit Wireless temp sensor with display SP OCC UNOCC COMM X13790822 04 wall X13790855 01 unit 3 speed Wireless temp sensor with display SP OCC UNOCC COMM X13790822 01 wall X13790855 01 unit 2 speed Installing Wall Mounted Wired Sensors Reference the wall mounted zone sensor dimensions in Figure 36 p 30 Position the sensor on an inside wall three to five feet above the floor and at least 18 inches from the nearest out
62. 8 C below a valid zone temperature value for hydronic cooling the sampling function is enabled When the sampling function is enabled the UC400 controller opens the main hydronic valve to allow the water temperature to stabilize After 3 minutes the controller again compares the entering water temperature value to the zone temperature value to determine if the desired heating or cooling function can be accomplished If the entering water temperature value remains out of range to accomplish the desired heating cooling function the controller closes the main hydronic valve and waits 60 minutes to attempt another sampling If the entering water temperature value falls within the required range it resumes normal heating cooling operation and disables the sampling function Fan Operation UC400 The UC400 controller supports 1 2 3 speed fans and variable speed fans The fan always operates continuously while either heating or cooling during occupied occupied standby and occupied bypass operation During unoccupied operation the fan cycles between OFF and HIGH regardless of the fan configuration When running in AUTO mode the fan operates differently based on the mode and the type of fan For 1 2 and 3 speed fans each time the fan is enabled the fan begins operation and runs on high speed for a period of time 0 5 seconds for fan coils and 3 seconds for UV SVNO3F EN unit ventilators and blower coils before changing to an
63. AUTO mode In AUTO mode the fan operates according to the fan default configurable using the Tracer TU service tool The fan speed has multiple speed configurations default is AUTO or set to OFF for both heating and cooling operation When configured as AUTO and with multiple speeds available the fan changes based on the required capacity calculated by the control algorithm AUTO Fan Operation ECM Energy Efficient Mode UC400 When the controller is configured for Energy Efficient Mode by means of the Fan Operating Mode Request MV point the controller and daughter board will minimize energy use by running the fan at the lowest possible speed while maintaining space temperature The controller will fully utilize valves economizer or electric heat which increases fan speed to meet space temperature unless the UV SVNO3F EN fan has been manually controlled Refer to the preceding section Manual Fan Speed Control UC400 AUTO Fan Operation ECM Acoustical Mode UC400 When the controller is configured for Acoustical Mode by means of the Fan Operating Mode Request MV point the controller and daughter board will minimize acoustical nuisance by balancing changes in fan speed and total fan noise The controller will fully OPEN cooling and heating valves before increasing fan speed to meet space temperature unless the fan has been manually controlled Refer to the preceding section Manual Fan Speed Control UC400
64. Cause Unit wiring Failed end device Normal operation Diagnostic present Unit configuration Entering water temperature Sampling logic Valve configuration Freeze avoidance 104 Explanation The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device the valves may not work correctly After power up the controller always observes a random start from 5 to 30 seconds The controller remains OFF until the random start time expires The user can communicate a desired operating mode such as OFF heat and cool to the controller If OFF is communicated to the controller the unit controls the fan to off There is no heating or cooling The controller includes entering water temperature Sampling logic which is automatically initiated during 2 pipe and 4 pipe changeover if the entering water temperature is either too cool or too hot for the desired heating or cooling Ensure the valves are correctly configured using the Tracer TU service tool as normally open or normally closed as dictated by the application Valves remain open UC400 Explanation The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to applicable wiring diagram The valves must be checked to ensure proper operations The controller opens and closes the valves
65. Dampers Electric Heat Performs courtesy inversion of thermostatic inputs to match selected valves Standard thermostats put out only on signals however customer may select a normally open valve A selectable switch allows the customer to invert the thermostat outputs for correct operation These switches are set at the factory but can be adjusted in the field Sophisticated changeover function when used with a thermistor that replaces traditional bi metallic disc temperature switches e Board will automatically honor only the appropriate customer request Heat Cool depending on sensed water temperature e Feature can be enabled or disabled with a selector switch however it is set correctly at the factory based on customer choice of coil e The bi metallic disc temperature switch emulation is programmable and dead band range can be adjusted e Electric heat lockout circuits and fan proving circuits for electric heat are standard and are pre configured at the factory UV SVNO3F EN S TRANE ECM Overview and Setup Installation and Initial Setup AWARNING Safety Alert WARNING A You MUST follow all recommendations below Failure Hazardous Voltage w Capacitors to do so could result in death or serious injury Disconnect all electric power including remote e The BLDC motors contain capacitors which store disconnects and discharge all motor start run residual energy Please keep clear
66. Digit 36 Piping Package 0 None 1 Ball Valves amp P T Ports 2 Ball Valve amp Circuit Setter with P T Ports 3 Ball Valve Circuit Setter with P T Ports amp Strainer Digit 37 Flow Control Cooling Changeover Coil 0 None Digit 38 Flow Controls Heating Coil 0 None Digit 39 Auxiliary Drain Pan Piping Y Yes Auxiliary Drain Pan N No Auxiliary Drain Pan Digit 40 Crossover Piping 0 None 1 Internal 2 External 1 3 8 in Crossover Piping 3 External 2 1 8 in Crossover Piping UV SVNO3F EN TRANE General Information Unit Description Unit Nameplate The unit nameplate is located in the left hand end pocket behind the control box It includes the unit model number serial number electrical characteristics and other pertinent unit data Factory Shipment Before shipment each unit is leak tested and run tested for proper control operation Access A three panel front access of the unit ventilator allows for speedy set up during field commissioning This design allows for the end pocket of the unit ventilator to be open while the fan airside section stays closed End Pockets Access for piping and controls is made through the unit ventilator s end pockets Coil Connections The coil headers and drain connections are made within the unit chassis to allow a tight seal and help prevent air leakage around the coil The connection sizes vary dependent upon type of
67. Min Controller Output Fan Off Controller ignored Example 3 uFur set correctly and A 5c set correctly 10V Max Controller Output A Se Variable Speed Range Min Controller Output uF r OV Fan Off UV SVNO3F EN Use of Potentiometer Rheostat For VSP IW NNN Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e The adapter boards contain high voltage Connections to the adapter boards changes to the CSTI configuration switches should be made only with the power to the unit disconnected Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding All settings take effect immediate
68. NE Installation Sensors Note Do not use 000 as an address An address of 000 removes all association knowledge reverts the sensor to a low power hibernation mode and sends a disassociation request to the receiver 3 Record the address and location of the receiver and sensor pair Observing the Receiver for Readiness to Associate After initial power up the receiver conducts a channel scan for 20 seconds During this time the receiver selects from 16 available channels the clearest channel on which to operate LED1 LED2 and LED3 flash rapidly in succession round robin style while the channel scan is in progress as shown in part 1 of the illustration Do not attempt association leave the insulation strip in place until the channel scan is finished Important After the channel scan is finished LED3 begins blinking one blink pattern to show that the receiver is ready to be associated with a sensor see part 2 of the following figure Associating the Sensor to the Receiver To associate the sensor to the receiver 1 Remove the sensor cover by firmly pressing the thumb tab at the bottom of the cover and pulling the cover away from the back plate 33 S TRANE Installation Sensors 2 Verify that the sensor is set to the same address as the receiver it is to be associated with 3 Powerthesensor by removing the insulation strip from between the
69. Off Receiver address 001 11 17 kQ 451 9 501 9 2320 Q to 999 and 72 5 F 72 5 F 70 5 F Fan Receiver is powered up 22 5 C Hold 22 5 C 21 4 C Auto but not is associated or for 15 minutes Hold for 15 indefinitely System Receiver has received a then open minutes Off disassociation request then open from the associated sensor Receiver address 001 Open Open Open Open to 999 and receiver has not received a communication within 35 minutes from the associated sensor Receiver has no power Open Open Open Open Thermistor in sensor Open Normal Normal N A has failed to either open value value or close Setpoint potentiometer Normal value Open Open N A has failed to either open or close Measuring Output Resistance Wireless Controls To measure the resistance of receiver outputs for zone temperature and setpoints for all models and heating setpoint and fan system for the WDS 1 Ensure that the GND SIGNAL black wire and the GND POWER yellow wire are grounded to the transformer 2 Disconnect the ZONE white and SETPOINT RED wires from the controller Disconnect the HEAT SETPOINT brown and FAN SYSTEM green wires from the controller if applicable 3 Measure resistance as follows a All models Measure between the grounded GND SIGNAL black wire and either the SETPOINT red or ZONE white wire Compare resistance measurements to those in Table 42 p 101 b WDS only Measur
70. Operation Wireless Controls p 101 3 Measure the receiver output resistance see Measuring Output Resistance Wireless Controls p 101 4 When the testis complete reset the receiver address to its previous setting 5 Press the Test button on the sensor to force re association 6 Confirm association and communication by noting LED1 LED2 and LED3 as described in Testing Signal Strength Wireless Controls p 97 Forcing a Sensor to Transmit Wireless Controls To force a wireless sensor to transmit during servicing press the Test button on the sensor Output Power Level Wireless Controls The maximum output power level of a wireless sensor set is controlled by software and restricted by channel of operation and agency requirements per country or region The sensor has a default maximum power level of 10 mW UV SVNO3F EN but the receiver determines the ultimate output power level of the sensor Output Values Failure and Default Modes of Operation Wireless Controls The following table provides output values for failure and default modes of operation which can be used for troubleshooting Table 41 Output values Zone Zone Heating Fan temperature setpoint setpoint System Situation output output output output Receiver address 000 11 17 kQ 451 O 501 Q 2320 Q 72 5 F 72 5 F 70 5 F Fan 22 5 C 22 5 C 21 4 C Auto indefinitely indefinitely indefinitely System
71. Outside Wall Caulking Flanged wallbox Water dam sloped toward exterior General Installation Checks The checklist below is a summary of the steps required to successfully install a unit This checklist is intended to acquaint the installing personnel with procedures required in the installation process It does not replace the detailed instructions called out in the applicable sections of this manual 1 Carefully remove the stretch wrap and top cardboard cover Check the unit for shipping damage and material shortage file a freight claim and notify appropriate sales representation f end panels have been ordered the panel will already be mounted to the unit Note The unit ventilator is packaged in clear stretch wrap to allow for immediate visual inspection A protective cardboard cover helps prevent scratching and other cosmetic blemishes during transport Remove remaining cardboard blocking 3 Remove the unit s left front panel to verify nameplate sales order number ts correct It is located behind the control box UV SVNO3F EN 4 Remove shipping bracket from the lower rear corners of the unit to separate the unit from the skid Access to the screws holding the bracket to the skid is obtained inside the unit 5 Rotate the fan wheels manually The wheels should move freely and be in proper alignment Visually inspect the fan area for obstructions or shipping damage 6 Remove all applicable knock
72. Pit for fan coil products Op Mode Mtr2 Mod P _ Sets the operational mode for Motor 2 Must be set to FP for fan coil products Mtr 1 Out Format 5 QJ P y Sets the interface type for Motor 1 Must be set to Pu for fan coil products Mtr 2 Out Format G G2 Pll Sets the interface type for Motor2 Must be set to P211 for fan coil products Mtr 1 2 PWM Freq FFE HHE Sets the PWM frequency for cases when On fan coil units the Pr must not be the PWM outputs are used changed Mtr 1 PWM Volt Ni luL 5 Sets the PWM voltage for cases when the This setting must NOT be changed as damage to PWM outputs are used the motor may occur Mtr 2 PWM Volt neu 5 Sets the PWM voltage for cases when the This setting must NOT be changed as damage to PWM outputs are used the motor may occur Mti Hgh PWM Lt Ni Ih WW Sets the maximum output that the This envelope protection value should not be controller will request from Motor 1 altered Mt1 Low PWM Lt i lo 19 5 Sets the minimum maximum output This envelope protection value should not be Mt2 Hgh PWM Lt nich 10 that the controller will request from Motor 1 Sets the maximum output that the controller will request from Motor 2 altered This envelope protection value should not be altered Mt2 Low PWM Lt Mti Ovspd RPM 62 nclo rP 19 5 3000 Sets the minimum maximum output that the controller will request from Motor 2 Selects the rom above which
73. S 2 TRANSFORMER ONLY The typical floating controller is an SPDT controller with a center off position On a change in temperature from the set point the controller will close the normally open NO or normally closed NC contacts driving the valve to an intermediate position until a further change at the controller The valve is set between the limits of the controller to satisfy various load requirements In the event of power failure the valve will stay in the position it was in before loss of power When power is restored the valve will again respond to controller demand Isolation Valves Installation The valve can be mounted in any position on a vertical line If the valve is mounted horizontally the actuator must be even with or above the center line Make sure there is UV SVNO3F EN S TRANE Installation Piping enough room to remove actuator cover for servicing Mount the valve on the tube or pipe Note Ensure the flow through the valve is in the direction indicated by the arrow stamped on the valve body Figure 20 Proper mounting for isolation valves VERTICAL Servicing Removal of Valves The actuator can be removed from the valve body Removing the actuator is recommended if soldering is being conducted near the valve To remove the actuator 1 Place the manual operating lever to the Open position see Figure 21 p 27 2 Depress the locking button and lift actuator until it separates from the
74. SHRAE Systems Handbook Steam Systems Figure 13 Steam piping Temp Regulating Valve De To Condensate return H 12 minimum Vacuum Equalizer F amp T Trap A See text for sizing Gravity flow to vented receiver Modulating Water Valves Option The actuator on the valve is a 24V 3 point floating valve The actuator can be easily removed from the valve body by pressing in on the locking tab and rotating the actuator 45 counter clockwise see Figure 14 The 2 way valves are bi directional flow the 3 way valves can be mixing or diverting see Figure 15 p 26 Note The actuator must be removed if soldering is being conducted near the valve High heat may cause damage to the actuator s plastic body mechanisms Figure 14 Remove modulating valve actuator by pressing in tab inset and turning actuator 45 counterclockwise 25 S TRANE Installation Piping Figure 15 Steam piping 2 and 3 way valves 2 way valve 3 way valve Closed AB lt gt A AB On applications without the optional factory installed piping packages it is important to remove the cartridge assembly from the valve body with the provided tool see Figure 16 Figure 16 Cartridge removal tool Use the following steps to complete cartridge assembly removal 1 Remove valve actuator 2 Remove the cartridge assembly from the valve body with the enclosed tool 3 Solder the valve i
75. SVNO3F EN S TRANE Diagnostics AWARNING Prevent Injury Keep away from small children If swallowed contact your local poison control center immediately 6 Observe the polarity indicators that are molded into the cover 7 Install two batteries of the type specified in Battery Type Wireless Controls p 99 in the battery holding slot that is molded into the sensor cover The sensor has been designed to prevent damage if the batteries are installed backwards to reduce the potential for injury Manual Association Wireless Controls Before attempting manual or automatic association the receiver must indicate readiness to associate one blink pattern of LED3 on receiver Refer to Observing the Receiver for Readiness to Associate p 33 At any time the manual association method can be used to associate the receiver with the sensor If an association was previously established between a receiver and a sensor and needs to be re established the manual association process may be used If an association has not yet been established the automatic association process is recommended see Associating the Sensor to the Receiver p 33 8 Using asmall screwdriver set the three rotary address switches Figure 39 p 33 locations S1 S2 S3 on the receiver to an address between 001 and 999 Notes e An address can be changed without powering down the receiver or sensor e An address can be cha
76. Savings Time is 2 30 the time setting for the clock should be 1 30 UV SVNO3F EN S TRANE Set the Time Format Time and Day Program to 24 hr or am pm format Res Menu ORK O0 ii ih _ Press the Menu button until the display screen is blank time not showing and 24h or am pm is blinking in the upper left corner of the screen 2 Use the and or buttons to select the desired setting and then press OK 3 The hour display begins to blink use the and or buttons to select the desired setting and then press OK 4 The minute display begins to blink use to select the desired setting and press OK 5 The day display on the left side of the display screen begins to blink use to select the desired setting and press OK Set the Program Note The Time Clock should be used to program the unit for the UNOCCUPIED mode the periods of time when the unit will not be in operation The mode you are programming is shown on the LED display The Timer is in operation ON The unit is in UNOCCUPIED mode C The Timer is not in operation OFF The unit is in OCCUPIED mode Note Odd number programs activate the timer ON function the unit is in UNOCCUPIED mode and even number programs activate the timer OFF function the unit is in OCCUPIED mode Set the Switching ON Time Figure 55 Setting the switching ON time 1 Press OK until prog 01 is visible on the LED disp
77. Summit building management system Reference the unit wiring diagram or submittals Ground shields at each Tracer ZN520 taping the opposite end of each shield to prevent any connection between the shield and anther ground Refer to the most recent version of Trane publication CNT SVX04A EN Tracer ZN520 Unit Controller Installation Operation and Programming Guide for the communication wiring diagram Communication wire must conform to the following specification 1 Shielded twisted pair 18 AWG 2 Capacitance 23 21 25 picofarads pF per foot 3 Listing Rating 300 V 150C NEC 725 2 b Class 2 Type CL2P 4 Trane Part No 400 20 28 or equivalent available through Trane BAS Buying Group Accessories catalog Note Communication link wiring is a shielded twisted pair of wire and must comply with applicable electrical codes Follow these general guidelines when installing communication wiring on units with a Tracer ZN520 controller e Maintain a maximum 5000 ft aggregate run e nstall all communication wiring in accordance with the NEC and all local codes e Solder the conductors and insulate tape the joint sufficiently when splicing communication wire Do not use wire nuts to make the splice e Do not pass communication wiring between buildings because the unit will assume different ground potentials e Do not run power in the same conduit or wire bundle with communication link wiring Note You do not n
78. Tracer ZN controllers the Tracer ZN board will serve as the primary logic to select the electric heat only if hot water is not available but the engine board will service as a backup lockout On units with Customer Supplied Controllers CSTI units the engine board and CSTI board will serve as the primary lockout e On CSTI units selected with a changeover coil configuration the engine board is factory configured to work in conjunction with the CSTI adapter board to provide a useful auto changeover function Traditionally a fixed setpoint bi metallic disc temperature switch is used to provide changeover with customer controls however the engine board has defeatable and configurable bi metallic disc temperature switch emulation when combined with the CSTI adapter board The ECM engine is preconfigured for typical values so changeover settings do not necessarily need to be changed An NTC thermistor is supplied and affixed to the supply pipes where applicable The ECM engine has several settings that affect the operation of the changeover function e FPru parameter should normally be set to EHL or EMFS to use the changeover functions e Eh parameter should be chosen if the unit has a changeover coil without electric heat e EHFS parameter should be chosen if the unit has a changeover coil with electric heat Generally this will perform the same as the EA parameter but in addition will disable heating function on el
79. Trane Company To replace the fan motor complete the following steps 6 Complete steps for removal of fan board see Cleaning of the Drain Pan p 87 Disconnect the fan board ground wire 8 Using a 7 16 in Allen wrench loosen the coupling on the fan shaft 9 Loosen the screw on the motor clamp until it allow the motor to be lifted off the base see Figure 63 10 Liftthe motor and pull forward until fan shaft separates from the motor see Figure 64 11 Attach new motor to fan shaft and reverse steps to complete installation Figure 62 Fan board removal for fan motor access UV SVNO3F EN Modulating Valves The valve should be serviced by a trained experienced technician For detailed piping installation steps see Installation Piping p 24 for modulating valve removal steps see Modulating Water Valves Option p 25 For general servicing or malfunction follow one of the appropriate steps AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury ACAUTION Hot Water The modulating valves may contain hot water If the valve is leaking drain system OR isolate valve from the system DO NOT remove valve body from plumbing as hot water could come o
80. UC400 The UC400 controller monitors the discharge air temperature with a 10 kQ thermistor wired to Al4 The freeze protection operation is initiated whenever the discharge air temperature falls below the discharge air temperature low limit The discharge air temperature low limit is configurable using the Tracer TU service tool During freeze protection the controller increases the heating capacity or decreases the cooling capacity in order to raise the discharge air temperature above the low limit If the discharge air temperature remains below the low limit for 3 minutes the controller generates a Discharge Air Temp Limit diagnostic Freeze protection will also perform a smart reset Refer to Smart Reset UC400 p 85 UV SVNO3F EN Maintenance AWARNING Hazardous Service Procedures The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical mechanical or other potential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures When possible disconnect all electrical power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized When necessary to work with live electrical components have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these
81. Y 24 3 1 2 41 2 SIDE VIEW 7 8 D FIELD CONN W SHUT 1 1 4 gt lt OFF VALVE RETURN TOP VIEW Note 1 3 8 in OD and 2 1 8 in ID crossover piping 1 Crossover piping is available for all 2 or 4 pipe coils selections Trane provides the crossover for the hot water only The crossover pipe is factory insulated with 3 8 in thick insulation 2 Expansion compensation between the factory piping package and the crossover piping is achieved using a flex hose rated at 250 psi working pressure Flex hose is only available with factory mounted piping packages 3 Expansion compensation for the crossover piping must be handled external to the unit ventilator 4 Crossover connections terminate in the same end pocket as the heating coil on all 2 and 4 pipe coils UV SVNO3F EN SIDE VIEW 17 TRANE Receiving and Handling The unit ventilator is packaged in clear stretch wrap and protective cardboard Note Before unwrapping make a visual inspection of the unit for any damage that may have occurred during shipping All orders are shipped FOB Freight on Board from the factory therefore any claims must be made with the delivering carrier Following visual inspection carefully begin the following procedures 1 Carefully remove the stretch wrap and the top cardboard cover Remove remaining cardboard blocking Remove the bottom access panel with a 7 32 in Allen wrench
82. a default mode when other forms of occupancy request are not present and the fan runs continuously The outdoor air damper if present will close when the fan is OFF The temperature setpoints can be local hard wired communicated or stored default values configurable using the Tracer TU service tool Unoccupied Mode UC400 In unoccupied mode the UC400 controller attempts to maintain the space temperature based on the unoccupied heating or cooling setpoint The fan will cycle between high speed and OFF In addition the outdoor air damper remains closed unless economizing The controller always uses the stored default setpoint values configurable using the Tracer TU service tool regardless of the presence of a hard wired or communicated setpoint value Occupied Standby Mode UC400 The UC400 controller is placed in occupied standby mode onlywhen a communicated occupied request is combined with an unoccupied request from occupancy binary input BI1 In occupied standby mode the controller maintains the space temperature based on the occupied standby heating or cooling setpoints Because the occupied standby setpoints have atypical temperature spread of 2 F 1 1 C in either direction and the outdoor air damper is closed occupied standby mode reduces the demand for heating and cooling the space The fan will run as configured continuously for occupied mode The controller always uses the stored default setpoint values confi
83. abel for convenient matching of labels settings to specific units Programming a unit with the settings from another unit will result in abnormal operation The label contains four important sections 1 How to enter the configuration menu 2 The description and meaning of the Error Codes 3 The description and meaning of the status display 4 The parameter names and values specific to that unit Figure 53 ECM engine label a O N WiKT264A nit are shown below Values for this u iMtr1 high Spd H 1076 Mtr1 Med Spd iadi i 165 Mtr1 Low Spd O I 62 EHStg1 Mtr Spd E 1 EH Stg2 Mtr1 Spd Al High Spd Mtr1 AHS 1 i06 Al Low Spd Mtr1 AL 1 Be Mtr2 Med Spd ac 0 toe g Eine 7 IMtr2 Low Spd EHStgi Mtr2 Spd _EH Stg2 Mtr2 Spd Al High Spd Mtr2 AlLowSpdMtr2 AL Te 0 MtiHghPWMLt IH 10 00 j nF t a fe i Fan Proving Fet FPrLI FaSt Ht Sens Resistor Ai Pu gut Protect Func Al PE DFF Note This label is provided for reference only as an example and should not be used to configure the unit UV SVNO3F EN Configuration Settings of the ECM Engine Board AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury All settings take effect immediately including fan startup and enabling of electric heat Caution should be taken to stay clear of hazardous voltages moving parts and electric hea
84. age jumper on the motor plug harness is absent for 208 230V units and 277V units If the jumper is present for these units the motor UV SVNO3F EN S TRANE Diagnostics electronics will be damaged and the motor will not be controllable Verify that the fan speed request is not below 450 rpm Speeds below 450 rpm are not supported on the fan coil product Verify that the all binary inputs to the customer terminal blocks are of proper and consistent polarity For CSTI units the fan inputs and end device inputs on TB3 must receive signals that are 24 Vac with respect to the unit chassis Note Do not short 24 Vac pos 1 or pos 2 to chassis refer to the unit schematic For Fan Speed Switch units that incorporate the Tracer ZN CSTI adapter board all inputs to TB3 must be 24 Vac with respect to unit chassis Note Do not short 24 Vac pos 1 or pos 2 to chassis refer to the unit schematic For Tracer ZN units where there is a desire to use parallel fan inputs on the adapter board TB3 strip the inputs must be COM i e the inputs will honor only 0 V with respect to unit chassis Note Do not short 24 Vac pos 1 or pos 2 to chassis refer to the unit schematic Verify that variable speed VSP inputs are properly wired to 1TB4 Notes e Do not short the courtesy 10 Vdc supply to chassis or loads that require greater than 10 mA of DC current e Please observe proper polarity of 0 10 Vdc inputs
85. al 95 S TRANE Diagnostics Table 34 UC4000 diagnostics continued Diagnostic Diagnostic Probable Cause Consequences Type Space Invalid or missing e Discharge air Automatic temperature value for zone temperature control failure temperature runs e Unit shuts OFF if both space temperature and discharge air temperature fail Entering Invalid or missing Fan Unaffected Automatic water temp value for zone enabled failure temperature e Valves Unaffected e Outdoor air damper Unaffected e DX electric heat Unaffected Dischargeair Discharge air e Fan OFF Smart reset temp low temperature has e Valves Open manual limit fallen below the e Outdoor air damper Discharge Air Closed Temperature Low e DX electric heat OFF Limit Dischargeair Invalid or missing Simplified zone Automatic temp value for discharge control algorithm runs failure air temperature e Unit shuts OFF if zone temperature fails Outdoor air Invalid or missing e Fan Unaffected Automatic temp failure value for outdoor air Valved Unaffected temperature e Outdoor air damper Minimum Position e DX cooling electric heat unaffected Humidity Invalid or missing e Fan Unaffected Automatic input failure value for relative e Valves Unaffected humidity e Outdoor air damper Unaffected e DX cooling electric heat Unaffected CO2 sensor Invalid or missing Fan Unaffected failure value for CO2 e Valves Unaffected e Outdoor air damper Unaffected e DX cooling
86. al auto changeover function on CSTI units where applicable In addition the CSTI adapter board offers configurability that can be used in special cases to adjust the following operation of the unit e Courtesy cooling main valve logic inversion relays for use with normally open valves e Courtesy heating auxiliary valve logic inversion relays for use with normally open valves e Changeover function for use with changeover coils in conjunction with the ECM engine board The switches are factory set based on the model number configuration as ordered however the information is provided below to aid in the understanding of the operation of the system Configuration Configuring the ECM Engine Controller Adjustment and Calibration of the Variable Speed Inputs VSP 0 10V AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury UV SVNO3F EN
87. an inoperative motor Refer to Troubleshooting ECM p 105 to reset the cause must be resolved and the power to the unit cycled Electric heat and changeover heat will be shut down Indicates that Motor 2 has experienced a run away or over speed condition and has been shutdown The unit will offer limited limp in performance and Motor 1 will continue to operate but will not be monitored Fan Status function if being used will report an inoperative motor Refer to Troubleshooting ECM p 105 to reset the cause must be resolved and the power to the unit cycled Electric heat and changeover heat will be shut down Indicates the motor is transitioning between speeds ramping up or down The message RAMP is briefly displayed followed by the target speed for Motor 1 only Once the target speed has been reached the status display will resume operation On power on the version of software is briefly displayed followed by the results of a POST power on self test UV SVNO3F EN Initial Setup and Configuration After connections of power and hookup of customer installed controls fan speed switches and under normal operative conditions the only adjustments needed to be made to the ECM engine board during commissioning of the unit are e Adjustment and calibration of the variable speed inputs VSP 0 10V on the system where applicable e Adjustment calibration or disabling of the option
88. ane wireless sensor model WDS Figure 40 shows an example of a model WDS that has been configured and is in operating mode Figure 40 Wireless sensor model WDS in operating mode Temperature System settings not available for fan coil or Force Flo units Fan settings Test symbols appear only when Test button is pushed Occupancy indicator Error code Keypad Test button Changing Room Temperature This symbol 1 To increase the room shows the temperature press current room GY temperature or your setpoint To decrease the room selection while temperature press you are making an adjustment When you select a setpoint this symbol appears To confirm press E or wait 5 seconds The display will return to the home screen UV SVNO3F EN Changing Heating and Cooling Room Temperature Settings applies to some systems 3 Some systems allow 1 Press CAD or CVD to 3 eT opens cacao select the heating heating and cooling room temperature cooling setting settings If your eyetem hae A 2 If in coaling mode option this symbol press to change to appears when you heating mode If in adjust the heating mode press temperature setting iG change l cooling When you adjust the mode ge cooling setting the top arrow and 3 Press CAD or GD to Snake Neel select the heating When you adjust the cooling setting heating setting the bottom arrow and 4 Toconfirm press L or flame f
89. are open This manual open position may be used for filling venting and draining the system or opening the valve during power failure The valve can be closed by depressing the white lever lightly and then pulling the lever outward The valve and actuator will return to the automatic position when power is restored Note Ifthe valve is powered open it cannot be manually closed unless the actuator is removed UV SVNO3F EN Wiring the Valve AWARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring Improperly installed and grounded field wiring poses FIRE amp ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes All field wiring MUST be performed by qualified personnel Failure to follow these requirements could result in death or serious injury A controller and a separate transformer is required to operate each valve see Figure 18 and Figure 19 p 27 PortA open and closed denote valve open and closed positions Figure 18 Wiring for modulating valve actuator USE 105 C 2217 TEMPERATURE RATED SUPPLY WIRES ONLY Figure 19 Wiring for modulating valve actuator V C6900 SERIES ACTUATOR Double insulated Bi directional CONTROLLER SERIES 60 SPDT Cable colour code or Molex pin nunbers AUX SWITCH ONLY USE CLAS
90. cable alongside or in the same conduit as 24 Vac power e n an open plenum avoid lighting ballasts especially those using 277 Vac e Do not use a trunk and branch configuration if possible Trunk and branch configurations shorten the distance cable can be run Wiring Installation Tracer UC400 This section provides information about wiring the UC400 controller For more detailed information refer to BAS SVX02D EN Installation Operation and Maintenance Tracer UC400 Programmable Controller or the most recent revision 67 S TRANE Wired Controllers Communication Wiring Wiring Overview Outline General Instructions p 68 BACnet MS TP Link Setting the Address p 68 Power Supply Connection Wiring p 69 Wiring Power ON Check Requirements p 70 p 70 General Instructions Conformance to Regulatory Standards All wiring must comply with the National Electrical Code NEC and local electrical codes Connecting Wires to Terminals To connect wires to the UC400 controller or the expansion modules 1 Strip the wires to expose 0 28 inch 7 mm of bare wire 2 Insert the wire into a terminal connector 3 Tighten the terminal screw to 0 5 to 0 6 N m 71 to 85 ozf in or 4 4 to 5 3 Ibf in 4 Tug onthe wires after tightening the screws to ensure all wires are secure as shown on the right BACnet MS TP Link Setting the Address The rotary address dials on th
91. ch settings on the CSTI adapter board take effect immediately Changes should be made to the CSTI configuration switches with the power off Initial hookups to the CSTI and Standard Adapter board including low voltage interconnections must be made with the power off Do not make connections to the motors or the adapter boards while power is ON Do not remove connections to the motor or the adapter boards while the power is ON Do not free spin the fan wheels with your hands while the unit is powered on The system is constantly scanning and responding to the operational status of the motors Installation and Initial Setup Note Normally the Trane BLDC motors are configured for soft ramps and transitions between speeds However to aid in commissioning of the unit for approximately 10 15 minutes the ramps will be shortened to quickly observe proper unit behavior and response to speeds For new installations all boards and motors are pre installed and pre configured according to the unit configuration indicated by its model number Under normal and intended operation the only required intervention specific to the new BLDC units is the wiring of UV SVNO3F EN 47 S TRANE ECM Overview and Setup e Wall mounted low voltage fan speed switch inputs to the adapter boards terminal strips and 24 Vac tap to field installed fan speed switch e Field supplied controllers thermostats to the adapter boards terminal s
92. circuit based on either 1 The presence of hot water in the changeover coil section if the FPru parameter is set to EHL 2 Abnormal behavior of the fan s ifthe FPr u parameter is set to FNS 3 Oracombination of both the presence of hot water or abnormal behavior of the fan s if the FPr u parameter is set to EHF 4 The preceding three examples depend on the inference of the engine board that hot water is present In this case hot water is determined if a The temperature sensed is higher than the A 2b parameter b The A ib parameter is higher than the Al ier parameter c The temperature is not in the dead band between the A b parameter and the A r parameter in this case previous state will be retained d The input impedance of the thermistor circuit must be set correctly the A PU parameter should be set to im for CSTI units Configuring the ECM Engine Board Every Trane Fan Coil or Cabinet Heater unit with BLDC motors will have modules specifically configured at the factory for the operation of that unit The ECM engine configuration label is affixed to the low voltage access lid on the outside of the control panel see Figure 48 p 50 and Figure 53 p 60 The ECM engine label may be on the back side of the low voltage access lid depending on the unit configuration 60 The serial number of each unit and the custom configuration settings specific to that unit will be printed on the l
93. ck plate Apply light pressure to the bottom of the cover until it snaps in place b Install the security screw into the bottom of the cover if desired If installing a Tracer ZN520 zone sensor see Control Options p 29 for more information Figure 37 32 Figure 38 Security b ae rew Wireless Sensors LN la ed Notes e Receivers ship installed on the unit To remove the receiver press in the retention tabs on the underside of the receiver enclosure and push upward e For more detailed information for wireless sensors please refer to BAS SVX04E EN Installation Operation and Maintenance Wireless Sensors Models WTS WZS and WDS or the most recent revision Address Setting The process of establishing communication between a receiver and sensor is referred to as association The following limitations apply e Each associated receiver sensor set that communicates within the reception range of the wireless system must have a unique address It is not possible to associate more than one sensor to a receiver nor is it possible to associate more than one receiver to a sensor To associate a receiver and sensor the two devices must have their rotary address s
94. coil combination specified Size in Hydronic cooling main coil or 3 4 in nominal Heating cooling changeover coil 7 8 in ID Coil type Heating auxiliary coil 1 2 in nominal 5 8 in ID 1 in FNPT 3 8 in OD liquid 7 8 in OD suction Steam heating coil Direct expansion coil Unit Drain Pan The drain pan is dual sloped for effective condensate removal It is made from a non corrosive material to help eliminate issues associated to leaking or standing water It may be easily removed for cleaning The drain pan connection size for all Trane VUVE models is 7 8 in OD Motor Motors for the VUVE model do not include an external fan bearing on the end of the fan shaft This helps avoid issues related to fan bearing maintenance oiling is not needed and or bearing replacement Filters Filter sizing for the unit ventilator are an off the shelf design to reduce or help eliminate local stocking of the filters Options include throwaway filters MERV 8 and MERV 13 filters Sliding Fan Deck Convenient access to the fan motor and wheels for maintenance and serviceability may be made through Trane s easy slide fan deck design Note Ground wire must be reconnected if removed for service of fan deck Outside Air Return Air Dampers The outside air return air damper is a one piece linkage free design resulting in a superior air tight seal Options Field Installed Controls Option The unit comes equipped wit
95. contains decimal positions as well that change position with each parameter as appropriate Under normal conditions i e with no error code displayed the status will loop the following message UV SVNO3F EN RPM Mode RUNNING FAN STATUS CONTINUOUS LOOP Displayed when 1 No error codes are present 2 Motor has completed ramping uer p000 e000 S TRANE ECM Overview and Setup Indicates the current rom of Motor 1 in the system 0 rom here indicate that no fan speed has been requested n re 0000 gt e000 Indicates the current rom of Motor 2 in the system 0 rom here indicate a fan off condition OR a fan missing condition FSE YES no Indicates the status being calculated or Fan Motor 1 If off this indicates that either 1 No fan speed is being requested or 2 The fan performance is failing to meet the request refer to Troubleshooting ECM p 105 for additional information If on this indicates that the fan is performing correctly and will be used to report fan status correctly depending on Pru mode FSt YES no Indicates the status being calculated or Fan Motor 2 If off this indicates that either 1 No fan speed is being requested or 2 The fan performance is failing to meet the request refer to Troubleshooting ECM p 105 for additional information 3 If the target speed for Motor 2 is 0 this is used
96. cupied modes when the unit is off due to a diagnostic or when the unit is in the off mode due to 76 the local zone sensor module acommunicated request or the default fan speed off If both a zone sensor module and communicated request exist the communicated request has priority Fan Cycling Operation Tracer ZN520 Tracer ZN520 does not support fan cycling in occupied mode The fan cycles between high speed and off in the unoccupied mode only The controller s cascade control algorithm requires continuous fan operation in the occupied mode Fan Off Delay Tracer ZN520 When a heating output is controlled off the Tracer ZN520 controller automatically holds the fan on for an additional 30 seconds This 30 second delay gives the fan time to blow off any residual heat from the heating source such as a steam coil When the unit is heating the fan off delay is normally applied to control the fan otherwise the fan off delay does not apply Fan Start on High Speed Tracer ZN520 On a transition from off to any other fan speed the Tracer ZN520 controller automatically starts the fan on high speed and runs the fan at high speed for 0 5 seconds This provides the ample torque required to start all fan motors from the off position Entering Water Temperature Sampling Function Tracer ZN520 Only units using the main hydronic coil for both heating and cooling 2 pipe changeover and 4 pipe changeover units use the entering
97. d those that occur after power up are handled according to Table 27 Table 27 Tracer ZN520 controller diagnostics Elec Diagnostic Latching Fan Valves Heat Damper Auxiliary temp No Enabled No No action No action failure action Condensate overflow Yes Off Closed Off Closed detection Entering water temp No Enabled Enabled Enabled Enabled failure Fan mode failure No Enabled Enabled Enabled Enabled Invalid unit Yes Disabled Disabled Disabled Disabled configuration failure Low temp detection Yes Off Open Off Closed Maintenance No required Yes Enabled action No action No action No Setpoint No Enabled action No action No action Zone temp failure No Off Closed Off Closed Notes 1 Priority Level Diagnostics are listed in order from highest to lowest priority The controller senses and records each diagnostic independently of other diagnostics It is possible to have multiple diagnostics present simultaneously The diagnostics affect unit operation according to priority level 2 Latching A latching diagnostic requires a manual reset of the controller while a non latching diagnostic automatically resets when the input is present and valid 3 Enabled End device is allowed to run if there is a call for it to run 4 Disabled End device is not allowed to run even if there is a call for it to run 5 No Action The diagnostic has no affect on the end device UV SVNO3F EN Using Trane s Service Tool Rover Tracer ZN520
98. d recycling of certain refrigerants and the equipment that is used in these service procedures In addition some states or municipalities may have additional requirements that 2013 Trane All rights reserved must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them WINN ANTI Contains Refrigerant System contains oil and refrigerant under high pressure Recover refrigerant to relieve pressure before opening the system See unit nameplate for refrigerant type Do not use non approved refrigerants refrigerant substitutes or refrigerant additives Failure to follow proper procedures or the use of non approved refrigerants refrigerant substitutes or refrigerant additives could result in death or serious injury or equipment damage AWARNING Proper Field Wiring and Grounding Required All field wiring MUST be performed by qualified personnel Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes Failure to follow code could result in death or serious injury AWARNING Personal Protective Equipment PPE Required Installing servicing this unit could result in exposure to electrical mechanical and chemical hazards e Before installing servicing this unit technicians MUST put on all
99. djustable mechanical stop position Tracer ZN520 Operation Off Fan is off control valve options and fresh air damper options close The low air temperature detection option is still active Auto Fan speed control in the auto setting allows the modulating 3 wire floating point or 2 position control valve option and three speed fan to work cooperatively to meet precise capacity requirement while minimizing fan UV SVNO3F EN speed motor energy acoustics and valve position pump energy chilled water reset As the capacity requirement increases at low fan speed the water valve opens When the low fan speed capacity switch point is reached the fan switches to medium speed and the water valve repositions to maintain an equivalent capacity The reverse sequence takes place with a decrease in required capacity Low Med High The fan runs continuously at the selected speed and the valve option will cycle to meet setpoint UC400 Controller Operation Off Fan is off control valve options and fresh air damper options close The low air temperature detection option is still active Auto Fan speed control in the auto setting allows the modulating 3 wire floating point or 2 position control valve option and 1 2 3 or variable speed fan to work cooperatively to meet precise capacity requirement while minimizing fan speed motor energy acoustics and valve position pump energy chilled water reset As the Capacity
100. e addressed in this section Battery Type Wireless Controls NOTICE Equipment Damage The batteries are manufactured in a ready to use state They are not designed for recharging Recharging can cause battery leakage or in some cases can cause the safety release vent to open NOTICE Equipment Damage Do not attempt to hook up the sensor to a power supply Equipment damage may result Use two non rechargeable 1 5 V lithium AA batteries in the sensor To maintain UL rating use only UL listed lithium batteries The sensor ships with Energizer L91 batteries already installed Replacement batteries are available at Trane Service Parts Centers p n X13770035010 or other local suppliers Battery Life Wireless Controls Battery life is five years under normal conditions If the sensor is not used for an extended period of time do one of the following e Set the sensor address to 000 to place the sensor into a low power hibernation mode e Remove the batteries Notes e f lithium batteries are temporarily unavailable alkaline batteries can be used However alkaline battery life is very short by comparison e The battery life for a model WDS may decrease with extended LCD display activity Battery Installation Wireless Controls AWARNING Prevent Injury Batteries can explode or leak and cause burns if installed backwards disassembled charged or exposed to water fire or high temperature UV
101. e inputs are accessible via 11B4 on the adapter boards The ECM engine is factory configured to drive the unit to a minimum speed catalogue low speed value defined as Aun I and Avid once the analog 0 10V input is honored As a default the noise floor threshold is set to 3 percent 0 3V At 0 3V the system will drive the motors to the speeds defined in defined as Aunt tand Acre Ifthe analogue input goes to 10V the ECM engine will drive the motor to maximum speed normally catalogue high speed value defined as Ahri and Ahiid and will change speed in response Although the ECM engine board ships with settings that will work with most 0 10 Vdc outputs calibration should be performed to maximize response range and controller authority Typically the only settings needed for the VSP inputs are calibration of the signal to ensure that the system obeys the following rules 1 The minimum output from the field supplied controller is met with a positive fan response That is we do not want the uFur setting on the ECM engine board to be higher than the minimum output of the field supplied controller asthe ECM engine will ignore a portion of the usable range of the customer fan variable speed output 2 Theminimum output from the field supplied controller is not significantly greater than the floor setting ufer floor If the minimum output of the controller is significantly greater than the floor setting the first
102. e the Power Marquee LED flashes red Important Flashing red does not indicate that the UC400 controller will fail to operate Instead the point s that are in fault or alarm mode should be checked to determine if the status of the point s is acceptable to allow equipment operation Random Start UC400 Random start is intended to prevent all units in a building from energizing at the same time The random start timer delays the fan and any heating or cooling start up from 5 to 30 seconds Occupancy Modes UC400 Occupancy modes can be controlled in the following ways e The state of the local hard wired occupancy binary input BI1 e Atimed override request froma Trane zone sensor see Timed Override Control UC400 p 81 e Acommunicated signal from either a Tracer SC or BAS A communicated request from either a Tracer SC or BAS takes precedence over local requests If a communicated occupancy request has been established and is no longer present the controller reverts to the default occupied occupancy mode after 15 minutes if no hard wired occupancy request exists The UC400 controller has the following occupancy modes e Occupied e Unoccupied e Occupied standby e Occupied bypass UV SVNO3F EN Occupied Mode UC400 In Occupied Mode the UC400 controller maintains the space temperature based on the occupied space temperature setpoint occupied offset The controller uses the occupied mode as
103. e 17 Table 15 Local fan switch enabled Tracer ZN520 Communicated Fan Speed Fan Switch Fan Input Local Operation Off Ignored Off Low Ignored Low Medium Ignored Medium High Ignored High Auto Off Low Medium High Auto Off Low Medium High Auto configured default determined by heat cool mode Table 16 Fan operation in heating and cooling modes Tracer ZN520 Heating Cooling Fan Mode Occ Unocc Occ Unocc Off Off Off Off Off Low Low Off high Low Off high Medium Med Off high Med Off high High High Off high High Off high Auto Default fan sp Off high Default fan sp Off high Table 17 Local fan switch disabled or not present Tracer ZN520 Communicated Fan Speed Input Fan Operation Off Off Low Low Medium Medium High High Auto or not present Auto fan runs at the default speed Continuous Fan Operation Tracer ZN520 During occupied and occupied standby modes the fan normally is on For multiple speed fan applications the fan normally operates at the selected or default speed off high medium or low When fan mode is auto the fan operates at the default fan speed During unoccupied mode the controller controls the fan off While unoccupied the controller heats and cools to maintain the unoccupied heating and cooling setpoints In unoccupied mode the fan is controlled on high speed only with heating or cooling The unit fan is always off during occupied occupied standby and unoc
104. e Ifthe receiver does not receive a communicated signal from its associated sensor within 35 minutes zone temperature and setpoint outputs fail generating a unit controller alarm see Output Values Failure and Default Modes of Operation Wireless Controls p 101 Note Once a receiver communicates to a WZS sensor the receiver disables opens its zone setpoint output indefinitely Sensor Transmission Time and Temperature Variables Sensor transition time variables are as follows e The maximum time between sensor temperature transmissions is 15 minutes e The minimum time between sensor temperature transmissions is 30 seconds e The minimum time for transmitting temperature setpoint changes is 10 seconds Note Ifa sensor transmits a message to the receiver and the receiver does not reply the sensor will retransmit the message to the receiver every 30 seconds until communication to the receiver is re established Sensor temperature time variables are as follows e The minimum change in zone temperature required to force a sensor transmission is 0 2 F when the temperature range is between 60 F and 80 F 0 5 F when the temperature range is between 32 F and 60 F or between 80 F and 122 F 38 e The minimum change in temperature setpoint required to force a sensor transmission is 0 1 C for a model WDS sensor Operating Mode Model WDS This section describes how to operate the Tr
105. e The fan speed switch is set to OFF if no communicated value is present e Specific diagnostics are generated e The default fan speed is set to OFF and the fan is operating in the Auto mode If the controller is in unoccupied mode the fan cycles between OFF and the highest fan speed If the controller does not have power the unit fan does not operate For the controller to operate normally it must have an input voltage of 24 Vac If the Marquee Power LED is OFF continuously the controller does not have sufficient power or has failed Several diagnostics affect fan operation For detailed information about these diagnostics refer to Table 34 p 95 The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device the fans may not work correctly After power up the controller always observes a random start from 5 to 30 seconds The controller remains OFF until the random start time expires The controller continuously operates the fan when in the occupied occupied standby or occupied bypass mode When the controller is in the unoccupied mode the fan is cycled between high speed and OFF with capacity Even if the controller is configured for continuous fan operation the fan normally cycles with capacity during unoccupied mode While unoccupied the fan cycles ON or OFF with heating cooling to provide varying amounts of heati
106. e UC400 controller serve one or two purposes depending upon the network they are always used for the MAC Address which is sometimes all 68 or part of the BACnet Device ID refer to the illustration below Lk AC XFRM LL Ry de BR by ur yd RELAYS BO1 l BO2 T BO3 NO NC C NO NC C NO NC C Use a 1 8 inch 3 2 mm flathead screwdriver to set rotary address dials Dials rotate in either direction MAC Address The MAC Address is required by the RS 485 communication protocol on which BACnet operates A UC400 controller can use a MAC Address from 001 to 120 Important Each device on the link must have a unique MAC Address Device ID The controller rotary addresses should be sequentially set with no gaps inthe numbering starting with 001 on each link for example 001 002 003 004 and so on A duplicate address or a 000 address setting will interrupt communications and cause the Tracer SC device installation process to fail BACnet Device ID The BACnet Device ID is required by the BACnet network Each device must have a unique number from 001 to 4094302 BACnet networks without a Tracer SC system controller On BACnet networks without a Tracer SC system controller the Device ID can be assigned one of two ways tcan be the same number as the MAC Address determined by the rotary address dials on the UC400 cont
107. e analog input Sets the minimum turn on rpm for Motor 1 when the analog input becomes active Sets the high speed rom for Motor 2 Mtr 2 Med Spd Mtr 2 Low Spd EHStg1 Mtr2 Spd EH Stg 2 Mtr 2 Spd nde Lo g E bhig Eee C3 co ca amp Sets the medium speed rpm for Motor 2 Sets the low speed rpm for Motor 2 Assigns an rpm to be associated with a call for 1S stage electric heat for Motor 2 only on electric heat equipped units Assigns an rpm to be associated with a call for 24 stage electric heat for Motor 2 only on electric heat equipped units AI High Spd Mtr 2 AI Low Spd Mtr 2 Ahi Arrie Sets the maximum rpm for Motor 2 for the maximum input value of the analog input Sets the minimum turn on rpm for Motor 2 when the analog input becomes active Notes These notes are provided for reference only and the ECM engine label must be used as the ultimate guide for setting up an engine board on specific units Do not exceed 1700 rpm Do not set under 450 rpm On units with two motors the single shafted motor is designated as Motor 1 If the unit has only one motor all seven S a s for the second motor H i C oe E i ic Ed ALi AH 2 eau be set to zero Analog poe below the ufer setting will be rejecte Note E di l E hic Een l E Zi IC settings are locked out on units with electric heat OpModeMtri Mod Py Sets the operational mode for Motor 1 Must be set to
108. e between the grounded GND SIGNAL black wire and the FAN SYSTEM green wire Compare resistance measurements to those given in Table 43 p 101 Note The output circuits are not electrically powered consequently resistance can be UV SVNO3F EN S TRANE Diagnostics measured without risk of damage to the volt ohm meter Table 42 Receiver resistance table for all models wireless controls Nominal setpoint Nominal zone and heating Zone or setpoint temperature output setpoint output temperature resistance resistance 55 F 12 8 C 17 47 kQ 792 Q 60 F 15 6 C 15 3 kQ 695 Q 65 F 18 3 C 13 49 kQ 597 Q 70 F 21 1 C 11 9 kQ 500 Q 75 F 23 9 C 10 5 kQ 403 Q 80 F 26 7 C 9 3 KQ 305 Q 85 F 29 4 C 8 25 kQ 208 Q Table 43 Receiver resistance table for model WDS wireless controls Fan command Nominal output resistance High 16 130 Q Med 13 320 Q Low 10 770 Q Auto 2320 Q Off 4870 Q Cleaning the Sensor Wireless Controls NOTICE Equipment Damage Spraying glass cleaner or any other solution directly on the sensor may damage it You can clean the sensor by applying glass cleaner to a soft non abrasive cloth and gently wiping the face including the buttons and LCD display Use of a pre moistened towelette designed for lens or screen cleaning is also acceptable Avoid inadvertent pressing of the Occupied Unoccupied buttons on the keypad on the WDS sensor as this may result in an unwan
109. e changeover BOP4 energizes in the cooling test stage and BOP5 energizes in the heat test stage This occurs even though during normal 2 pipe changeover operation BOP4 controls the unit valve for both cooling and heating a At the beginning of the Fan High step the controller attempts to clear all diagnostics b The fresh air damper BOP6 only energizes during this step if binary output 6 has been configured as a fresh air damper c After the Fresh Air Damper step the test sequence performs the Exit step This initiates a reset and attempts to return the controller to normal operation UV SVNO3F EN S TRANE Diagnostics Troubleshooting UC400 Table 45 through Table 50 p 105 provide troubleshooting information if encountering operational problems with the UC400 controller Table 45 Fan does not energize UC400 Probable Cause Unit wiring Failed end device Normal operation No power to the controller Diagnostic present Unit configuration Random start observed Cycling fan operation continuous Unoccupied operation Fan mode off Requested mode off Explanation The wiring between the controller outputs and the fan relays and contacts must be present and correct for normal fan operation Refer to applicable wiring diagram The fan motor and relay must be checked to ensure proper operation The fan will turn OFF when e The controller receives a communicated off signal
110. e controller compares the discharge air temperature setpoint with the discharge air temperature and calculates a unit heating cooling capacity accordingly refer to the illustration below The end devices outdoor air damper valves and so on operate in sequence based on the unit heating cooling capacity 0 100 percent Calculated Active zone discharge air Calculated unit temperature temperature heating cooling setpoint setpoint Capacity Difference Difference Measured Measured zone discharge air temperature temperature 81 If the discharge air temperature falls below the discharge air temperature low limit setpoint configurable using the Tracer TU service tool and the cooling capacity is ata minimum the available heating Capacity is used to raise the discharge air temperature to the low limit refer to the following section Discharge Air Tempering UC400 e Simplified zone control if discharge air temperature failure occurs then simplified zone controls runs In the unoccupied mode the controller maintains the zone temperature by calculating the required heating or cooling capacity 0 100 according to the measured zone temperature and the active zone temperature setpoint The active zone temperature setpoint is determined by the current operating modes which include occupancy and heat cool modes e Discharge air temperature control is the backup mode that runs only if there is not va
111. e even when a building automation system is not present You do not need to observe polarity for LonTalk communication links The controller provides six 0 25 inch quick connect terminals forthe LonTalk communication link connections as follows e Two terminals for communication to the board e Two terminals for communication from the board to the next unit daisy chain e Two terminals for a connection from the zone sensor back to the controller Table 22 Zone sensor wiring connections Tracer ZN520 TB1 Description Space temperature timed override detection Common Setpoint Fan mode Communications CO Ul A WI N e Communications 80 UC400 Sequence of Operation The UC400 controller will operate to maintain the space temperature setpoint This section provides information about sequence of operations Power up Sequence UC400 When 24Vac power is initially applied to the UC400 controller the following sequence occurs 1 The Power Marquee LED turns on as red then flashes green and then turns a solid green 2 All outputs are controlled OFF and all modulating valves and dampers close 3 Thecontroller reads all input local values to determine initial values 4 The random start timer begins refer to the following section Random Start UC400 The random start timer expires Normal operation begins assuming there are no generated diagnostics If any points are in fault or alarm mod
112. e fan output for 1 minute and the fan status switch indicates no fan operation the controller performs a unit shutdown and generates a Low Airflow Supply Fan Failure diagnostic e Ifthe fan has been operating normally for one minute but the fan status switch indicates no fan operation the same diagnostic is generated This manual diagnostic discontinues unit operation until the diagnostic has been cleared from the controller If a diagnostic reset is sent to the controller and the fan condition still exists the controller attempts to run the fan for 1 minute before generating another diagnostic and performing a unit shutdown A diagnostic reset can be sent to the controller from the Tracer TU Alarms page or by temporarily overriding the Reset Diagnostic Request on the Tracer TU Binary Status page Note In the ECM fan application the ECM engine board will monitor the status of the fan In case of a failure the engine board will disable the motor immediately and the low airflow diagnostic is sent Fan Off Delay UC400 After heating has been controlled OFF the UC400 controller keeps the fan energized for an additional 30 seconds in order to remove residual heat from the heating source Filter Maintenance Timer UC400 The filter maintenance timer tracks the amount of time in hours that the fan is enabled The Filter Runtime Hours Setpoint configurable using the Tracer TU service tool is used to set the amount of time unt
113. e use of nitrogen purge when brazing refrigerant lines to prevent formation of oxides in the lines Install the refrigerant suction and liquid lines as described in the condensing unit installation instructions The TXV is factory installed on the unit ventilator Piping should be run straight out through the back of the unit Access piping knockouts are located in the rear panels of the unit as shown Dimensions and Weights p 11 Recommended refrigerant line connections for various unit combinations are given in Table 8 p 24 Typical Superheat Charging Charts are shown inthe Trane Service Facts found in the condensing unit section manual Refrigerant charge weights can also be determined with your local Trane sales engineer using a valid Trane Selection Program Steam Piping When air water or another product is heated the temperature or heat transfer rate can be regulated by a modulating steam pressure control valve Since pressure and temperature do not vary at the same rate as load the steam trap capacity which is determined by the pressure differential between the trap inlet and outlet may be adequate at full load but not some lesser load UV SVNO3F EN S TRANE Installation Piping There are detailed methods for determining condensate load under various operating conditions However in most cases this is not necessary if the coils are piped as shown in Figure 13 Follow the procedure documented in the A
114. each diagnostic independently of other diagnostics It is possible to have multiple diagnostics present simultaneously The diagnostics are reported in the order they occur Possible diagnostics include e Low temperature detection e Condensate overflow e Low air flow fan status e Discharge air temp limit e Space temperature failure e Entering water temp failure e Discharge air temp failure e Outdoor air temp failure e Local setpoint failure e Local fan mode failure e CO2 sensor failure e Generic AIP failure e Humidity input failure e Defrosting compressor lockout e Maintenance required e Invalid unit configuration e Generic temperature failure e Discharge air low limit Resetting Diagnostics Tracer ZN520 There are a number of ways in which diagnostics are reset 1 Automatic reset by the controller By initiating a manual output test at the controller By cycling power to the controller Through Rover Trane s service tool oO a BS Tracer ZN520 by using any other communicating device ab le to access the controller s diagnostic reset input 6 Tracer ZN520 by cycling the fan switch from Off to any speed setting Automatic Reset by the Controller Tracer ZN520 The controller includes an automatic diagnostic reset function that attempts to automatically restore the unit when a low temperature diagnostic occurs Note The controller implements the automatic diagnostic reset func
115. ectric heat and on the changeover coil if there are fan failures The auxillary heating coil function will continue to operate and respond to the customer heating request e A PU parameter should be setto n for CSTI units and to QUE for ComfortLink controller units e ict parameter defines the temperature at which the engine board will close the triac onboard the ECM engine if FPru parameter is set correctly e b parameter defines the temperature at which the engine board will open the triac onboard the ECM Engine if FPr u parameter is set correctly By leaving a gap between the make and break value we will simulate hysteresis of a real bi metallic disc temperature switch 58 e When combined with the CSTI adapter board the bi metallic disc temperature switch emulation and the electric heat lockout function will work when the switches are set correctly Adjustment and Configuration of the CSTI Adapter Board CAUTION Burn Hazard If SW4 is turned off the factory customer controller thermostat will be able to actuate the electric heat while hot water is available or if the fans have failed This switch should NOT be turned off if the unit schematic indicates that it should be on to prevent overheating of the unit due to simultaneous electric heat and hydronic heat actuation or failure of the fan and to use the preferred hydronic heating over electric heat Failure to follow this instruction could r
116. ed For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e The BLDC motors contain capacitors which store residual energy Please keep clear of the fan wheels for5 minutes after the power has been removed from the system as a power request with the motor powered off could result in a very short period of actuation Unplugging the motor is adequate to ensure that there will be no power request The adapter boards contain high voltage Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding Initial hookups to the CSTI and standard adapter boards including low voltage interconnections must be made with the power off Do not make connections to the motors or the adapter boards while power is ON Do not remove connections to the motor or the adapter boards while the power is ON Notes e The new Trane BLDC system is a closed loop system
117. ed before the fan board is removed to avoid nicking the wire Care should be maintained to retain the order of the motors with respect to the motor plugs On a unit with two motors the double shafted motor will always be to the leftside and will be designated as Motor 2 by the controller Tips Ensure that motor nameplate voltage is the same as unit voltage for 3 phase 4 wire units with Neutral motor voltage will be LN not L1 L2 Ensure that motor harness is correct harness will have jumper installed for 115V units only Ensure that configuration on ECM Engine matches the affixed label Maintain correct plug motor association The plugs will have the motor number and shaft configuration printed on an affixed label Ensure that configuration of switches on CSTI adapter board matches depiction of switches on the unit schematic Ensure that all wires are plugged in securely Ensure that edge protection on sharp edges grommets and wire management devices are maintained when replacing components Ensure that blunt tip screws are used when in the proximity of wire harnesses UV SVNO3F EN Circuit Modules Replacement Notes Work Instructions 1 Circuit modules are equipped with nylon standoffs which can either be removed by squeezing the barbs at the rear of the control panel or squeezing the latch above the circuit module Ifthe latter method is chosen the standoffs will be retained on the metal panel The new
118. ed to selected control components best suited for room comfort For more information on the Tracer UC400 unit controller operation and service issues refer to BAS SVX48B EN Installation Operation and Programming Manual Tracer UC400 Programmable Controller or the most recent version OA RA Actuator Option The OA RA actuator provides true spring return operation for positive close off of the OA RA damper The spring return system of the actuator closes the outside damper if power is lost to the building When ordered with factory controls the actuator is a 3 point floating design A 2 to 10 Vdc actuator is available when other than Trane controls are specified Refer to Table 1 p 9 for OA RA technical data Note Because the damper actuator is a spring return type an inner spring will close the damper upon loss of power If the need to service or replace the actuator is required the spring must be loaded for the damper to function properly The term loaded means that the blade must be held in the return air position upon replacement of the actuator UV SVNO3F EN S TRANE General Information Face and Bypass Actuator Option The face and bypass damper actuator incorporates a direct couple design It provides electronic protection against overload A limit switch is not included nor required as part of the design When reaching the damper end position the actuator automatically stops The gears can be manually dise
119. eed to observe polarity for LonTalk communication links Device Addressing LonTalk devices are given a unique address by the manufacturer This address is called a Neuron ID Each Tracer ZN520 controller can be identified by its unique Neuron ID which is printed on a label on the controller s logic board The Neuron ID is also displayed when communication is established using Tracer Summit or Rover service tool The Neuron ID format is 00 01 64 1C 2B 00 UV SVNO3F EN Wire Characteristics Controller communication link wiring must be low capacitance 18 gage shielded twisted pair with stranded tinned copper conductors For daisy chain configurations limit the wire run length to 5 000 ft Truck and branch configurations are significantly shorter LonTalk wire length limitations can be extended through the use of a link repeater Recommended Communication Wiring Practices The following guidelines should be followed while Installing communication wire e LonTalk is not polarity sensitive Trane recommends that the installer keep polarity consistent throughout the site e Only strip away two inches maximum of the outer conductor of shielded cable e Make sure that the 24 Vac power supplies are consistent in how they are grounded Avoid sharing 24 Vac between LonTalk UCMs e Avoid over tightening cable ties and other forms of cable wraps A tight tie or wrap could damage the wires inside the cable e Do not run LonTalk
120. entilator To help avoid cold air infiltration the field cut out should only be large enough to allow for the condensate hose to exit the unit To field reverse the slope of a vertical unit drain pan 2 Slide out fan deck disconnecting the condensate line and fan plug will release fan deck for sliding 3 Remove pipe clamp that hold the p trap to the drain pan Remove clips that hold the drain pan in place 5 Lift and rotate the drain pan 24 6 Reconnect p trap to the drain pan and replace clips to secure the pan to the fan deck 7 Afterthe condensate drain piping has been completed check water flow to ensure the system properly carries and away all condensate accumulation Note A P trap is factory supplied in every vertical unit ventilator Trane Piping Packages Option Trane Standard Piping Package includes a 2 or 3 way valve with bypass balance valve ball valves Pete s plugs and unions A strainer and circuit balancing valve are optional All union connections should be tightened in the field Units are shipped with union connections hand tightened only in the factory Note All connections made in the field should be sweat connections Piping packages are not shipped insulated Any insulation should be provided in the field by the installing contractor The auxiliary drain pan optional is the main condensate connection to the unit when specified The chilled water or DX coil drain pan will empty
121. er the nameplate of the unit indicates the maximum input draw of the motor as the motor settings can be changed to draw more power Electric Heat Relays For quiet operation the new BLDC units employ power relays instead of definite purpose contactors for electric heat actuation The coils of multiple relays are hooked in parallel to simulate a multi pole contactor as shown in Figure 1 In Figure 1 two sets of three relays are used to 10 perform the function of a two 3 pole contactors Figure 1 Sample arrangement electric heat relay Troubleshooting Other Unit Functions In some cases the normal or abnormal operation of the BLDC system may interact with other components in the system Generally verification of the engine and adapter boards wiring and configuration should be checked if there are unexplained abnormalities in other areas of the unit 1 Valve operation 2 Electric Heat operation 3 Changeover sensor operation 4 Damper operation 5 Condensate overflow switch A high degree of protection is provided on electric heat units If electric heat fails to actuate it may be because of one of the following events 1 Fans are failing to meet target speed If a second motor is not present all settings for soeeds for Motor 2 should be set to 0000 Hot water may be available in the changeover coll 3 The connection to analogue input 1 on the Tracer ZN controller may be reversed in polarity 4 Targe
122. erate the ZN520 in a stand alone operation 1 Turn power on at the disconnect switch option 2 Position the fan mode switch to either high medium low or the auto position 3 Rotate the setpoint dial on the zone sensor module to 55 F for cooling or 85 F for heating The appropriate control valve will actuate assuming the following conditions 1 Room temperature should be greater than 55 F and less than 85 F 2 Fora2 pipe fan coil unit with an automatic changeover sensor the water temperature input is appropriate for the demand placed on the unit For example cooling operation is requested and cold water 5 lower than room temperature flows into the unit 3 Select the correct temperature setpoint Note Select and enable zone sensor temperature settings to prevent freeze damage to unit Tracer UC400 Unit Startup Refer to the most recent version of Trane publication BAS SVX48B EN Installation Operation and Programming Tracer UC400 Programmable Controller for Tracer UC400 unit ventilator The factory pre programs the Tracer UC400 unit ventilator with default values to control the temperature and unit airflow Use Tracer SC building automation system or Tracer TU software to change the default values Follow the procedure below to operate the Tracer UC400 in a stand alone operation 1 Turn power on at the disconnect switch option 2 Position the fan mode switch to either high medium low or the a
123. ervice life with proper installation and operation The new system provides a high degree of flexibility and configurability but the simplicity of customized factory configuration appropriate to most installations Very little intervention is needed by service and installation personnel in most applications however installers must read through the entire document before beginning installation of the new equipment This literature focuses on unit motors and controls including three new circuit modules developed specifically for this series General Information There are four primary components that enable the technology on your product 1 Trane BLDC Motor 2 ECM Engine Board 3 Adapter Board 4 CSTI Adapter Board The motors and modules are combined as systems and cannot work without each other Trane BLDC Motor Figure 42 Trane BLDC motor 1 High Efficiency Brushless DC BLDC Motor Core 2 Motor Base Housing Potted Electronics Package UV SVNO3F EN S TRANE e The BLDC motor has integrated electronics overload protection and short circuit protection The motor contains no user serviceable components inside NOTICE Equipment Damage The motor harness attached to the single plug to which the motor mates contains the very important motor voltage jumper and should not be modified or substituted Failure to follow this instruction could result in equipment damage e The motor mates to the unit elec
124. es appear at appropriate sections throughout this literature Read these carefully Indicates a potentially hazardous A WARNING situation which if not avoided could result in death or serious injury Indicates a potentially hazardous CAUTION situation which if not avoided could result in minor or moderate injury It could also be used to alert against unsafe practices 3 Indicates a situation that could resultin NOTICE equipment or property damage only Important Environmental Concerns Scientific research has shown that certain man made chemicals can affect the earth s naturally occurring stratospheric ozone layer when released to the atmosphere In particular several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine Fluorine and Carbon CFCs and those containing Hydrogen Chlorine Fluorine and Carbon HCFCs Not all refrigerants containing these compounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment our customers and the air conditioning industry All technicians who handle refrigerants must be certified The Federal Clean Air Act Section 608 sets forth the requirements for handling reclaiming recovering an
125. esult in the unit overheating and becoming hot to the touch which could result in minor or moderate injury and or equipment damage For CSTI units the board mounted switches have to be set appropriately to enable the desired functionality Figure 52 CSTI adapter board board mounted switches o I F a wee xe 5 AV V NO su3 e 6 oN sii4ialzIBON F d f 1 Table 12 CSTI adapter board switch functions Switch L R SW1 SW2 SW3 SW4 Function Valve one Valve two Changeover Electric Heat operation operation Function Fan Proving logic logic Function UP position Normally Normally Changeover Electric Heat towards Open Valve Open Valve Function ON Fan Proving terminal Function strip DOWN Normally Normally Changeover Electric Heat position Closed Valve Closed Valve Function OFF Fan Proving towards Function black relays Notes e All switches are factory set based on customer configuration of the unit model number The unit will function correctly as shipped however the switch functions and positions are depicted for customer convenience and for service and troubleshooting aids e SW3 and SW4 work in conjunction with settings on the ECM engine controller Simple activation of UV SVNO3F EN changeover and electric heat lockout function may not work correctly unless the ECM engine board is configured to perform these functions e Customers are advised to locate the changeover coil temperature se
126. eturn air stream If both a hard wired and communicated space temperature value exist the UV SVNO3F EN controller ignores the hard wired space temperature input and uses the communicated value External Setpoint Adjustment Tracer ZN520 Zone sensors with an external setpoint adjustment 1kQ provide the Tracer ZN520 controller with a local setpoint 50 F to 85 F or 10 C to 29 4 C The external setpoint is exposed on the zone sensor s front cover When the hard wired setpoint adjustment is used to determine the setpoints all unit setpoints are calculated based on the hard wired setpoint value the configured setpoints and the active mode of the controller The hard wired setpoint is used with the controller s occupancy mode occupied occupied standby or unoccupied the heating or cooling mode the temperature deadband values and the heating and cooling setpoints high and low limits to determine the controller s active setpoint When a building automation system or other controller communicates a setpoint to the controller the controller ignores the hard wired setpoint input and uses the communicated value The exception is the unoccupied mode when the controller always uses the stored default unoccupied setpoints After the controller completes all setpoint calculations based on the requested setpoint the occupancy mode the heating and cooling mode and other factors the calculated setpoint is validated against
127. eventive Maintenance A comprehensive preventive maintenance program should be established for a unit ventilator system The following are several key elements e Inspect the filters monthly Follow the instructions for Filter Replacement p 87 e Inspect and clean the drain pan every three months e Check the coils for dirt accumulation every three to six months Clean the coils at least once each year Inspect the unit ventilator insulation every three months thoroughly clean as needed 89 TRANE Diagnostics Troubleshooting Checklist If operating difficulties are encountered refer to the following table for probable causes and corrective measures If suggested corrective measures have been AWARNING taken and the trouble still persists contact the control Hazardous Service Procedures supplier or the local Trane Sales Office The maintenance and trouble shooting procedures recommended in this section of the manual could result in exposure to electrical mechanical or other potential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures When possible disconnect all electrical power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized When necessary to work with live electrical components have a qualified licensed electrician or other individual who has been
128. evice such as Rover the controller will wink to indicate it received the signal 102 If the LED is off either the power is off an abnormal condition is present or the TEST button is pressed Yellow COMM LED Tracer ZN520 Ifthe LED is off continuously the controller is not detecting any communication This is normal for units in standalone applications If the LED blinks the controller detects communication If the LED is on continuously this indicates an abnormal condition Manual Output Test Tracer ZN520 The purpose of the manual output test sequence is to verify output and end device operation Use the manual output test to e Verify output wiring and operation without using Rover service tool e Force the water valve to open and balance the hydronic system Note The manual output test is not an automatic cycle You must press the TEST button to proceed through each step The controller observes all diagnostics that occur during the test sequence Although an automatic diagnostic reset sequence exists as part of the controller s normal operation the automatic diagnostic reset feature is not active during the test sequence If left in an individual test step the controller remains in test mode for 60 minutes and then exits to normal operation Many service calls are due to unit diagnostics The test sequence resets unit diagnostics and attempts to restore normal unit operation prior to testing t
129. free air circulation e Air drafts from stairwells outside doors or unsectioned hollow walls e Radiant heat from the sun fireplaces appliances etc UV SVNO3F EN S TRANE Installation Sensors e Airflow from adjacent zones or other units e Unheated or uncooled spaces behind the controller such as outside walls or unoccupied spaces e Concealed pipes air ducts or chimneys in partition spaces behind the controller Location Considerations for Wireless zone sensors Placement of the sensor is critical to proper operation the receiver is factory mounted on fan coil units For most installations barriers limit proper radio signal strength more than distance For best radio transmission range and reliability mount the receiver and sensor in line of sight Where this is not possible try to minimize the number of barriers between the pair of devices In general sheetrock walls and ceiling tiles offer little restriction to the transmission range for the sensor is as follows e Open range 2 500 ft packet error rate 2 e Usable range 200 ft e Typical range 75 ft Fan Mode Switch Installation The fan mode switch ships loose inside the unit accessory bag Follow the steps below to install the fan mode switch Items needed 2 x 4 electrical junction box 1 Remove the brown wire if not using a field supplied damper 2 Remove the terminals cut and strip wires as required for installation 3 Level a
130. g e The LEDs on the receiver LEDs on the model WZS sensor and the display on the model WDS sensor e The Test button on the sensor e The address test mode on the receiver 100 e Acommon volt ohm meter Procedure for Testing the Wireless Sensor System Wireless Controls If the wireless sensor system is not working as expected 1 Observe LED5 on the receiver LED5 is On solid green whenever the receiver is powered 2 Verify that the receiver is properly grounded Both the GND SIGNAL black wire and the GND POWER yellow wire must be grounded 3 Press the Test button on the sensor e Model WZS LED5 should turn On solid green indicating proper battery strength LED1 LED2 and LED3 will indicate signal strength Note When checking signal strength both LED1 and LED3 on the receiver and sensor illuminate in unison if the sensor and receiver are associated Use this feature to confirm association e Model WDS Battery life Testing Battery Status Wireless Controls p 98 and signal strength Testing Signal Strength Wireless Controls p 97 are indicated on the display Procedure for Testing the Receiver Wireless Controls If the receiver is not working as expected 1 Verify that the receiver is powered 2 Set the receiver address to 000 to force the zone temperature output and zone temperature setpoint output to their default mode values see Output Values Failure and Default Modes of
131. g or cooling The heating cooling sources cycle on or off periodically with the unit fan to match the capacity according to pulse width modulation PWM logic Unoccupied The fan cycles with capacity when the unit is in unoccupied operation mode This occurs even if the unit is in continuous fan operation While unoccupied the fan cycles on or off with heating cooling to provide varying amounts of heating or cooling to the space to match the to pulse width modulation PWM logic Fan mode off When using the local fan mode switch to determine the fan operation the off position controls the unit fan to off Requested It is possible to communicate the operating mode such as mode off off heat and cool to the controller When off is communicated to the controller the unit controls the fan to off The unit is not capable of heating or cooling when the controller is in this mode Diagnostic A specific list of diagnostics effects fan operation For more present information see Diagnostics p 90 No power to Ifthe controller does not have power the unit fan will not the controller operate Forthe controller to operate normally it must have an input voltage of 24 Vac When the green LED is off continuously the controller does not have sufficient power or the controller has failed Manual output The controller includes a manual output test sequence to test verify binary output operation and the associated wiring
132. gurable using the Tracer TU service tool regardless of hard wired or communicated setpoint values In addition the outdoor air damper uses the economizer occupied standby minimum position setpoint to reduce the ventilation rate Occupied Bypass Mode UC400 The UC400 controller is placed in occupied bypass mode when the controller is operating in the unoccupied mode and when either the timed override ON button on the Trane zone sensor is pressed or the controller receives a communicated occupied bypass signal from a BAS In occupied bypass mode the controller maintains the space temperature based on the occupied heating or cooling setpoints The fan will run as configured continuous or cycling The outdoor air damper closes when the fan is OFF The controller remains in occupied bypass mode until either the CANCEL button is pressed on the Trane zone sensor or the occupied bypass time configurable using the Tracer TU service tool expires The temperature setpoints can configured as local hard wired communicated or stored default values using the Tracer TU service tool UV SVNO3F EN Timed Override Control UC400 If the UC400 controller has a timed override option ON CANCEL buttons pushing the ON button initiates a timed override on request A timed override on request changes the occupancy mode from unoccupied mode to occupied bypass mode In occupied bypass mode the controller controls the space temperature based on the
133. h a fan speed switch damper blade only and an optional low temperature detection Customer Supplied Terminal Interface CSTI Option Units containing the end device control design will incorporate a pre wired selected control components to a terminal strip for wiring a field provided controller and temperature sensor Note For controller operation malfunction of any non Trane field installed controls consult the literature or technical support of the controls manufacturer Tracer ZN520 Control Package Option The Tracer ZN520 electronic digital controller is a factory installed tested and commissioned LonTalk certified design It may be used in a stand alone control scheme or as part of a building automation system The controller is pre wired to Trane selected control components best suited for room comfort For more information on the Tracer ZN520 unit controller operation and service issues refer to CNT SVX04A EN nstallation Operation and Programming Guide Tracer ZN520 Unit Controller or the most recent version Tracer UC400 Control Package Option The Tracer UC400 electronic digital controller is a factory installed tested and commissioned BACnet certified design The Tracer UC400 operates as a single zone VAV controller and ramps fan speed based on space load It may be used ina stand alone control scheme or as part of a building automation system The controller is mounted pre wired and pre programm
134. he outputs If the diagnostics remain after a reset the STAT US LED indicates the diagnostic condition is still present two blinks Manual Output Test Procedure Tracer ZN520 Follow the procedure below to test Tracer ZN520 controllers 1 Press and hold the TEST button for at least two seconds not exceeding 5 seconds and then release to start the test mode 2 The test sequence will turn off all outputs and then attempt to clear all diagnostics 3 Press the TEST button several more times no more than once per second to advance through the test sequence The outputs are not subject to minimum times during the test sequence However the test sequence only permits one step per second which limits minimum output time The green LED is turned off when the TEST button is pressed To begin the manual output test mode press and hold the TEST button turning off the green LED for at least UV SVNO3F EN two seconds The green LED will begin to blink indicating the controller is in test mode Table 44 Test sequence for 1 heat 1 cool configurations Tracer ZN520 Cool Heat Fan Output Output Damper Steps BOP1 3 BOP4 BOP5 BOP6 1 Off Off Off Off Closed 2 Fan High High Off Off Closed 3 Fan Medium Medium Off Off Closed 4 Fan Low Low Off Off Closed 5 Cool High On Off Closed 6 Heat High Off On Closed 7 Fresh Air Damper gt High Off Off Open 8 Exit c Note For all 1 heat 1 cool applications including 2 pip
135. il maintenance typically a filter change is required The timer can be enabled disabled from the Supply Fan group on the Setup Parameters page in Tracer TU The UC400 controller compares the fan run time to filter runtime hours setpoint Once the setpoint is reached the controller generates a Filter Change Required diagnostic When the diagnostic is cleared the controller resets the filter maintenance timer to zero and the timer begins accumulating fan run time again The diagnostics can be cleared and the filter timer reset by temporarily overriding the Filter Timer Reset Request on the Binary Status page or by using the reset button on the Alarms page in Tracer TU 86 Freeze Avoidance UC400 Freeze avoidance is used for low ambient temperature protection It is initiated only when the fan is OFF The UC400 controller enters the freeze avoidance mode when the outdoor air temperature is below the freeze avoidance setpoint configurable using the Tracer TU service tool The controller disables freeze avoidance when the outdoor air temperature rises 3 F 1 7 C above the freeze avoidance setpoint The following occurs when the controller is in freeze avoidance mode e Valves are driven open to allow water to flow through the coil e Fan is OFF e Economizing is disabled e The outdoor return air damper is closed e DXcooling is OFF e Electric heat stages are OFF Freeze Protection Discharge Air Temperature Low Limit
136. ime ihre P 5 Sets the maximum ramp time for both Overrides the ramp rates 11 I P and 1r P if Motor 1 and Motor 2 in seconds the calculated ramp time exceeds thr P EH Fan off delay FHdL Gg Selects how long the fan needs to stay on Not used on fan coil unit after an electric heat request has been turned off Lck Rtr Protect LrP on Selects whether to use the on board This will shut down the affected motor if locked rotor protection function rotational response is not detected UV SVNO3F EN 63 S TRANE ECM Overview and Setup Table 13 Configuration settings of the ECM engine board continued Notes Typical These notes are provided for reference E User User only and the ECM engine label must be Description on Interface Interface used as the ultimate guide for setting up an Unit Label Name Value Description engine board on specific units Protect Funct FRPE on This function protects settings on the Do NOT change this setting This setting locks board that affect the safety of the electric out the following parameters from being heat system changed for safe operation of the unit A PU FPru A nH A bH Ebil E big Egri l Edie 5 49 nod node v dH T lLo Rmp dft auto rst rPdF oFF This function shortens the ramps for faster To aid in commissioning of the unit for unit commissioning and auto resets to off approximately 10 15 minutes the ramps will be after approximately 15 minutes of power
137. in and auxiliary coils electric heat control and damper control Screw terminal blocks provide convenient access to fan controls and to end device control In addition a courtesy 10 Vdc supply is provided for use with an external potentiometer or rheostat The 10 Vdc supply supports up to 10 mA draw TB3 right 13 positions is normally used to provide 1 24 Vac supply to a wall fan speed switch or 2 24 Vac supply to a field installed unit mounted controller or a wall mounted controller or thermostat 3 Inputs returns for thermostatic fan control High Medium and Low 4 Inputs returns for cooling heating requests 5 Inputs returns for electric heat requests 6 Inputs returns for damper operation requests TB4 left three positions is normally used to control the system with a 0 10 Vdc input from a thermostat controller with a variable speed output or a fan control rheostat The terminal block functional assignments and polarity are shown for reference only and the schematics that ship with each unit should be consulted before wiring Wiring assignments are configured for each unit UV SVNO3F EN S TRANE ECM Overview and Setup Adjustment and Configuration of the Engine Board AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e All settings take effect immediately including fan startup and enabling of electric heat Caution sho
138. ion Refer to the typical unit wiring diagrams UV SVNO3F EN Output Testing and Diagnostics UC400 This section provides information about the following e Output testing e Diagnostics Note For detailed description of LED activities and troubleshooting tips refer to the section Output Testing UC400 Important Do not directly overwrite the outputs Output testing can be accomplished by overriding the following analog and multistate value points in the desired state or position Cool valve request DX cool request Economizer request Electric heat request Heat valve request Supply fan speed request The points can be overridden on the Tracer TU analog or multistate pages by clicking on the Override icon _ in the control column A higher priority lower number must be chosen over the current control setting Diagnostics UC400 Diagnostics are informational messages that indicate the operational status of the UC400 controller In response to most diagnostics the controller attempts to protect the equipment by enabling disabling or by opening closing specific outputs Other diagnostics provide information about the status of the controller but have no effect on outputs Diagnostics are reported in the order in which they occur Multiple diagnostics can be present simultaneously Diagnostic messages are viewed using the Tracer TU service tool or through a BAS Note Tracer TU will report only active diagnostics
139. ion by over driving the actuator 135 percent of the stroke time Thereafter the controller resumes normal operation Two position Valve Operation UC400 The UC400 controller supports two position valves with a single binary output for each valve Controllers used for 2 pipe applications support heating cooling or heat cool changeover with a single valve coil A controller used for 4 pipe applications supports cooling or heat cool changeover with a main valve coil and heating only with an auxiliary valve coil Modulating Outdoor Return Air Damper UC400 The UC400 controller operates the modulating outdoor return air dampers based on the following e Occupancy mode e Outdoor airtemperature communicated or hard wired sensor e Zone temperature e Setpoint e Discharge air temperature e Discharge air temperature setpoint The minimum position for an outdoor air damper is configurable using the Tracer TU service tool for both occupied mode and occupied standby mode and for low 84 speed fan operation A controller can receive a BAS communicated outdoor air damper minimum position A BAS communicated minimum position setpoint has priority over all locally configured setpoints When a communicated minimum position setpoint is not present the controller uses the configured minimum position for low fan speed whenever the fan is running at low speed regardless of the occupancy state Refer to Table 23 and Table 24 for
140. ir temperature is controlled to maintain the space temperature at the current setpoint A typical scenario involves high humidity and high temperature load of the space The controller sets the cooling capacity to 100 percent and uses the reheat Capacity to warm the discharge air to maintain space temperature control Dehumidification may be disabled via Tracer or configuration Note Ifthe unit is in the unoccupied mode the dehumidification routine will not operate Data Sharing Tracer ZN520 Because this controller utilizes LoNWorkKs technology the controller can send or receive data setpoint heat cool mode fan request space temperature etc to and from other controllers on the communication link with or 77 without the existence of a building automation system This applies to applications where multiple unit controllers share a single space temperature sensor for rooms with multiple units but only one zone sensor for both standalone with communication wiring between units and building automation system applications For this application you will need to use the Rover service tool For more information on setup refer to the Trane publication EMTX SVX01G EN Rover Service Tool Installation Operation and Programming Guide or the most recent version Binary Inputs Tracer ZN520 The Tracer ZN520 controller has four available binary inputs see Table 19 Normally these inputs are factory configured for the fo
141. is disabled the controller resorts to its stored configuration default fan speeds for heating and cooling unless the controller receives a communicated fan input When the fan switch is in the off position the controller does not control any unit capacity The unit remains powered and all outputs drive to the closed position Upon a loss of signal on the fan speed input the controller reports a diagnostic and reverts to using the default fan speed On Cancel Buttons Tracer ZN520 Momentarily pressing the on button during unoccupied mode places the controller in occupied bypass mode for 120 minutes You can adjust the number of minutes in the unit controller configuration using Rover service tool The controller remains in occupied bypass mode until the override time expires or until you press the Cancel button Communication Jack Tracer ZN520 Use the RJ 11 communication as the connection point from Rover service tool to the communication link when the communication jack is wired to the communication link at the controller By accessing the communication jack via Rover you can access any controller on the link Communications Tracer ZN520 Tracer ZN520 controller communicates via Trane s LonTalk protocol Typically a communication link is applied between unit controllers and a building automation system Communication also is possible via Rover Trane s service tool Peer to peer communication across controllers is possibl
142. its D Exhaust Control with 1 Speed Supply Fan DX EH Units Digit 31 DDC Programming 0 None 1 Humidity Sensor Programming 2 CO2 Sensor Programming Note The humidity and CO2 sensor must be ordered as a separate line item in Job Configurator UV SVNO3F EN Model Number Descriptions Digit 32 Unit Depth Digit 41 Filter A Standard 16 5 8 in 1 Standard Throwaway Filter B 21 1 4in Depth with Baffle 2 MERV 8 Filter C 21 1 4in Depth with Full Sheet 3 MERV 13 Filter Metal Back and Baffle D 21 1 4in Depth with 25 in High Digit 42 Color Falseback 1 Deluxe Beige E 21 1 4in Depth with 26 in High 2 Cameo White Falseback 3 Soft Dove F 21 1 4in Depth with 27 in High 4 Stone Gray Falseback 5 Driftwood Gray G 21 1 4in Depth with 28 in High Falseback H 21 1 4in Depth with 29 in High Falseback J 21 1 4in Depth without Baffle Note Selection J should be applied if OA opening is raised above standard baffle location Digit 33 End Covers 0 None 1 16 5 8 in Depth without Cutouts 2 16 5 8 in Depth with 3 x 7 1 4 in Cutout 4 21 1 4 in Depth without Cutouts 5 21 1 4in Depth with 3 x 7 1 4 in Cutout 6 21 1 4in Depth with 3 1 4 in x 16 7 8 in Cutout Digit 34 Front Panel 1 Standard Front Panel 2 Heavy Gauge Front Panel Digit 35 Subbase 0 No Subbase 2 2in Subbase 4 4in Subbase 6 6in Subbase
143. l O II A 4 Pipe Preheat RH Clg LH Htg B 4 Pipe Preheat LH Clg RH Htg C 4 Pipe Reheat RH Clg LH Htg D 4 Pipe Reheat LH Clg RH Htg E 2 Pipe RH Connections F 2 Pipe LH Connections Digit 15 Cooling 2 Pipe Coil 0 None B 2 Row 12 FPI C 2 Row 16 FPI D 3 Row 12 FPI E 3 Row 16 FPI F 4 Row 12 FPI G 4Row 14 FPI H 3 Row 16 FPI EarthWise Coil J 3 Row DX R 410A Cooling Coil 6 Digit 16 Heating Coil None 1 Row 12 FPI 2 Row 12 FPI 2 Row 16 FPI 3 Row 12 FPI 3 Row 16 FPI 4 Row 12 EPI 4 Row 14 FPI 3 Row 16 FPI EarthWise Coil Steam Low Steam High Electric Heat Low Electric Heat Med Electric Heat High Digit 17 Motor TZZ ALTAMMIIAASO HoW i ou Wd oud ud md ue ue am ue ue a 0 ECM 1 ECM amp Low Acoustic Option 2 ECM amp Low FLA Option 3 ECM amp Low Acoustic amp Low FLA Option Digit 18 Other Motor Items A None B Toggle C Circuit Breaker Digit 19 2 or 3 Way Valve Cooling Changeover Coil 0 None 2 Way 3 Point Floating 3 Way 3 Point Floating 2 Way 2 10 Volt 3 Way 2 10 Volt Isolation Valve 2 Way Isolation Valve 3 Way Digit 20 CV Cooling or Changeover Coil NO O01 B WD 0 None L Low Cv M Medium Cv H High Cv Digit 21 2 or 3 Way Valve Preheat or Reheat Heating Coil None 2 Way 3 Point Floating 3 Way 3 Point Floating 2 Way 2 10 Volt 3 Wa
144. l Pressure rating Static 20 bar 300 psi Burst 100 bar 1500 psi Flow characteristic Linear Power supply 24 Vac 20 50 60 Hz 24 Vac 10 Power consumption Running 2 5 W Holding 1 W 5 VA class 2 power source Overload protection Electronic throughout 0 to 95 rotation Control signal 2 to 10 Vdc 3 point floating with Trane controls Angle of rotation Maximum 95 os Adjustable with mechanical stop Table 4 Isolation valve specification Direction of rotation Spring return reversible with cw ccw mounting Position indication Visual indicator 0 to 95 Power supply 24 Vac 50 60 Hz Max fluid temp 94 C 200 F Min fluid temp 1 C 34 F Max operating pressure 300 psi Max close off pressure 1 2 in 30 psi 3 4 in 20 psi lin 15 psi UV SVNO3F EN 9 TRANE ECM Application Notes The new Trane BLDC system has some notable differences to traditional designs RPM Mode The motors are programmed from the factory to run in rpm mode and will not change rpm based on external static pressure except at the performance limits of the motor controller For ducted units the units are shipped with the rpm set for 0 2 in ESP for High Medium and Low speeds The speeds can for high medium and low operation but should not be changed for the electric heat actuation speeds Generally the fans deliver less cfm for the same rpm if the static is increased and the power will dec
145. lash wait 5 seconds The home screen will appear Changing the Fan Setting From the home screen activate the fan setting menu by pressing _ and then YD Indicates that the 2 Press g or to choose fan setting is On The number of the desired fan setting N 3 When the symbol forthe 3 high 2 desired setting appears confirm your choice by medium 1 low e Pressing LD the The example shown indicates a home screen will appear or AUTO Indicates that the 1 fan will operate as needed to reach the selected temperature 3S gt fan on high speed Not all systems offer all three speeds e Pressing CA or Indicates that the CYD the next menu fan setting is Off will appear or e Waiting five seconds UV SVNO3F EN S TRANE Installation Sensors Requesting Temporary Occupancy Selectto e fyou need heating or cooling after request normal business hours you can occupancy request temporary occupancy by pressing and holding it for 2 seconds The occupied symbol remains on the screen and the unoccupied symbol disappears After 30 seconds the unoccupied symbol will re appear Select to cancel occupancy e To cancel temporary occupancy press K and hold for 2 seconds The unoccupied symbol will remain on the screen and the occupied symbol will disappear After 30 seconds the occupied symbol will re appear Error Codes C I Indicates an If an err
146. lay see Figure 55 Note When prog 01 is visible 01 should be blinking and the ON symbol should be displayed in the LED window Press OK again 65 S TRANE Time Clock 2 The hour display begins to blink use the and or buttons to select the desired setting and then press OK 3 The minute display begins to blink use to select the desired setting and press OK 4 The day display on the left side of the display screen begins to blink use to select the desired setting and press OK Note After you set the switching ON time the prog number should increase by one for example from prog 01 to prog 02 The number should be blinking and the OFF symbol should be displayed in the LED window Set the switching OFF time Set the Switching OFF Time 1 The hour display begins to blink use the and or buttons to select the desired setting and then press OK 2 The minute display begins to blink use to select the desired setting and press OK 3 The day display on the left side of the display screen begins to blink use to select the desired setting and press OK Note Repeat the steps for setting the switching ON OFF times for each additional programming needed You can set a maximum of 20 times 10 switching ON times and 10 switching OFF times Preset Program Selections When selecting daily programming preset selections can be used see Figure 56 Figure 56
147. lid zone temperature In this mode the active space temperature setpoint is used as the discharge air temperature setpoint Important This is not anormal operating mode The source of the invalid zone temperature needs to be corrected to restore normal operation Discharge Air Tempering UC400 If the UC400 controller is in cooling mode cascade zone control initiates a discharge air tempering function when e The discharge air temperature falls below the discharge air temperature low limit setpoint configurable using the Tracer TU service tool e Allcooling capacity is ata minimum The discharge air tempering function allows the controller to provide heating capacity if available to raise the discharge air temperature to the discharge air temperature low limit setpoint e The cold outdoor air is brought in through the outdoor air damper and when the damper is at high minimum position This causes the discharge air temperature to fall below the discharge air temperature low limit setpoint Heating or Cooling Mode UC400 The heating or cooling mode can be determined in one of two ways e By acommunicated signal from a BAS or a peer controller e Automatically as determined by the UC400 controller A communicated heating signal permits the controller to only heat and a communicated cooling signal permits the controller to only cool A communicated auto signal allows the controller to automatically change from heating
148. llowing functions e Binary input 1 Low temperature detection freezestat e Binary input 2 Condensate overflow e Binary input 3 Occupancy Generic e Binary input 4 Fan status Note The generic binary input can be used with a Tracer Summit building automation system only Each binary input default configuration including normally open closed is set at the factory However you can configure each of the four binary inputs as normally open or normally closed The controller will be set properly for each factory supplied binary input end device When no device is connected to the input configure the controller s input as not used Table 19 Binary input configurations Tracer ZN520 Controller Operation Binary Contact Contact Input Description Configuration Closed Open Low temperature b BI 1 deteciion l Normally closed Normal Diagnostic BI 2 oe Normally closed Normal Diagnostic overflow BI 3 Occupancy Normally open Unoccupied Occupied BI 3 o Binary Normally open Normal Normal BI 4 Fan status Normallyopen Normal Diagnostic 4 Note The occupancy binary input is for standalone unit controllers as an occupied unoccupied input However when the controller receives a communicated occupied unoccupied request the communicated request has priority over the hard wired input a During low temperature condensate overflow and fan status diagnos tics the Tracer ZN520 control disables all normal
149. ly including fan startup enabling of electric heat Caution should be taken to stay clear of hazardous voltages moving parts and electric heat elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery A courtesy 10 Vdc supply is provided that can support a 10 mA draw The use of a 1K or a 10K potentiometer is recommended and only a stand alone potentiometer not shared with any other electrical system should be employed When a simple potentiometer is used as depicted in Figure 51 the uFur setting will define a null zone off The typical connection is depicted in Figure 51 however please consult the unit schematic for the most updated instruction as Figure 51 is provided as reference only UV SVNO3F EN S TRANE ECM Overview and Setup Figure 51 Typical connection Adjustment or Disabling of Optional Auto Changeover Function on CSTI Units AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by
150. ly invokes during 2 pipe or 4 pipe changeover It determines when the entering water temperature is either too cool or too hot for the desired heating or cooling mode Unit The controller must be properly configured based on the configuration actual installed end devices and application When the unit configuration does not match the actual end device the valves may not work correctly No power to Ifthe controller does not have power the valves do not the controller operate For the controller to operate normally it must have an input voltage of 24 Vac When the green LED is off continuously the controller does not have sufficient power or the controller has failed The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to the typical unit wiring diagrams Unit wiring Table 30 Valves stay open Tracer ZN520 Probable Cause Explanation Normal The controller opens and closes the valves to meet the unit operation Capacity requirements The controller can communicate a valve override request to wave ENEO affect the valve operation The controller includes a manual output test sequence that Manual output Verifies analog and binary output operation and the test associated wiring However based on the current step in the test sequence the valves may be open Refer to Manual Output Test Tracer ZN520 p 92 Diagnostic A specific list of diagnostics
151. m position in the occupied mode The damper control is primarily associated with occupied fan operation Fan Mode Operation Tracer ZN520 For multiple fan speed applications the Tracer ZN520 controller offers additional fan configuration flexibility Separate default fan speeds for heating and cooling modes can be configured The fan runs continuously for requested speeds off high medium or low When the fan mode switch is in the Auto position or a hard wired fan mode input does not exist the fan operates at the default configured speed See Table 14 p 75 for default fan configuration for heat and cool mode During unoccupied mode the fan cycles between high speed and off with heating and cooling fan modes If the requested speed is off the fan always remains off Table 14 Fan configuration Tracer ZN520 Auto Fan Operation Fan Speed Default Heating Continuous Off Low Medium High Cooling Continuous Off Low Medium High During dehumidification when the fan is on Auto the fan speed can switch depending on the error Fan speed increases as the space temperature rises above the active cooling setpoint Additional flexibility built into the controller allows you to enable or disable the local fan switch input The fan mode request can be either hard wired or communicated to the 75 controller When both are present the communicated request has priority over the hard wired input See Table 15 Table 16 and Tabl
152. more information about how the controller determines the position of the modulating outdoor air damper Table 23 Modulating outdoor air damper position setpoint determination UC400 BAS Active communicated Fan Minimum Occupancy Setpoint speed Setpoint Unoccupied Any value Any value 0 closed e Occupied Valid Any value BAS Occupied bypass communicated Occupied standby e Occupied Invalid Low Occupied low fan e Occupied bypass minimum e Occupied standby e Occupied Invalid Medium Occupied e Occupied bypass high minimum Occupied standby Invalid Medium Occupied high standby minimum Table 24 Relationship between outdoor temperature sensors and damper position UC400 Modulating outdoor air damper position Occupied or Occupied Bypass Outdoor Air Temperature Occupied Standby Open to occupied Open to occupied Closed minimum standby minimum position position Unoccupied No or invalid outdoor air temperature Failed outdoor air Open to occupied Open to occupied Closed sensor minimum standby minimum position position Outdoor air Economizing Economizing Open and temperature damper damper economizing present and controlled controlled during unit economizing between occupied between occupied operation possible Refer to minimum standby otherwise closed section position and minimum position Economizing 100 and 100 Free Cooling UC400 p 84 Outdoor air Open to occ
153. n accordance with normal soldering practices 4 Re install the cartridge after soldering by tightening until it bottoms out The top surface of the cartridge will be flush with the top edge of the body casting NOTICE Over tightening Do not over tighten Maximum torque is 40 in Ib Overtightening could result in equipment damage 5 Replace valve actuator and wire in accordance with instructions 26 Plumbing the Valve The valve may be plumbed in any angle but preferably not with the actuator below horizontal level of the body Make sure there is enough room around the actuator for servicing or replacement For use in diverting applications the valve is installed with the flow water entering through the bottom AB port and diverting through end ports A or B In mixing applications the valve is installed with inlet to A or B and outlet through AB Mount directly to the tube or pipe Do not grip the actuator while making or tightening plumbing connections Either hold valve body by hand or attach an adjustable spanner 38 mm 1 1 2 across the hexagonal or flat faces on the valve body see Figure 17 Figure 17 Proper plumbing technique for modulating valves Manually Opening Valve The manual opener can be manipulated only when in the up position The A port can be manually opened by firmly pushing the white manual lever down to the midway position and pushing the lever in In this position both A and B ports
154. name toggles in Configuration to the value If on a parameter Display value saves the value settings and returns to the parameter name as confirmation Decrement Button Duration Action Short Press in lt 1 sec None Status Display Short Press in lt 1 sec Scrolls through parameter Configuration names or decreases value of Display parameter Long Press Hold gt 3 sec N A in Status Display Long Press Hold gt 3 sec Faster scroll through parameter in Configuration name or faster decrease of Display values of parameters Increment Button Duration Action Short Press in lt 1 sec None Status Display Short Press in lt 1 sec Scrolls through parameter Configuration names or increases value of Display parameter Long Press Hold gt 3 sec N A in Status Display Long Press Hold in Configuration Display Faster scroll through parameter name or faster increase of values of parameters UV SVNO3F EN Configuration Use Examples Example 1 To view the value of parameters without saving In this case we wish to verify that the Low Speed Value for Motor 1 is set correctly to 800 rpm We start with the ECM engine scrolling status display and proceed as follows MENU S MENU ay arly Example 2 We wish to change the change the value of Low Speed to 820 rpm We will continue from the previous example as shown below using along press to save the new desired value Note If the display has timed out and ret
155. nconfigured service replacement board to match the unit settings on a ECM configuration label Failure to follow this instruction could result in the unit overheating and becoming hot to the touch which could result in minor or moderate injury and or equipment damage NOTICE Equipment Damage You MUST follow all recommendations below Failure to do so could result in equipment damage e Care should be taken in the system to use a single 24 Vac supply system to avoid damage to equipment Care should be taken to observe proper polarity and grounding in the hookup of the 0 10V system to avoid damage to equipment Notes e The0O 10V variable speed inputs are available for use but are not mandatory The Trane Brushless DC system 55 S TRANE ECM Overview and Setup comes standard with three to five field accessible thermostatic inputs with adjustable speed so the use of the 0 10V inputs is optional e All inputs are independently configurable and simultaneously accessible and the ECM engine will choose the highest user configured and requested speed However care should be taken with customer controls to avoid contention of signals The ECM engine and adapter boards offer standard normalizing 0O 10V Variable speed fan inputs for use with field supplied controllers or thermostats These inputs can be used as the only input to the system used in addition to the thermostatic H M L inputs or not used at all Th
156. nd The system must be powered down before plugging or un plugging connections to the adapter boards engine boards or motors Failure do so will register diagnostics or cause unsafe operation and reduction in the contact life of the connectors e The motor will not spin if plugged in while the ECM engine Is requesting power Troubleshooting a motor that does not spin or spins too slowly ECM The motor connections and motor plug connections to the adapter boards should be secure Unit should be powered off to check the fit of the connectors When configured correctly the system will always respond positively to direct indirect and conflicting speed requests with very few exceptions These exceptions are 1 Ifa motor has been locked out due to engine locked rotor protection Assuming Motor 1 has an obstruction In this case the Status Display will be interrupted to display LOCH gt ner Lr Pt Solution i Remove obstruction from the fan wheel ii Ensure that motor plugs and all plugs to adapter boards and the ECM engine board are secure ili Verify that the configuration does not specify a motor that is physically missing Most units require only one motor The controller is made aware of the missing motor by specifying all speeds related to Motor 2 to 0 rpm iv Verify thatrt ILo andiicLo the low motor signal output limits are set correctly 2 Ifa motor has been locked out due to overspeed
157. nd position a 2 x 4 electrical junction box Follow the instructions given in Wall Mounted Control Interconnection Wiring p 42 and route the wires as shown in the wiring diagram Refer to the typical wiring diagram or to the unit specific diagram on the unit 5 Position the fan mode switch over the junction box with the two screws supplied Zone Sensor Installation Follow the procedure below to install the wired zone sensor module 1 Note the position of the setpoint adjustment knob and gently pry the adjustment knob from the cover using the blade of a small screwdriver 2 Insertthe screwdriver blade behind the cover at the top of the module and carefully pry the cover away from the base 3 To mount the sensor back plate a Hold the back plate against the mounting surface and mark the screw locations 31 S TRANE Installation Sensors b Secure the back plate against the mounting surface using included hardware 4 To install the zone sensor module to a standard junction box a Level and install a 2 x 4 in junction box installer supplied vertically on the wall b Pull the control wires through the cutout Attach the module to the wall using the screws provided 5 Strip the insulation on the interconnection wires back 0 25 inch and connect to TB1 for wired sensors 6 Screw down the terminal blocks for wired sensors 7 To replace the cover a Hook the cover over the top of the ba
158. ndthe sensor for example plastered walls with metal lathe or metal roof decks e Thick solid concrete walls between the receiver and the sensor e Placing the sensor inside metal enclosures Height Requirements It is recommended that you mount the back plate a maximum distance of 54 inches above the floor If a parallel approach by a person in a wheelchair is required reduce the maximum height to 48 inches Note Consult section 4 273 of the 2002 ADA Americans with Disability Act guideline and local building codes for further details regarding wheelchair requirements Mounting Surfaces Using the hardware provided mount the back plate of the sensor to a flat surface such as sheetrock or plaster or an electrical junction box The sensor must be mounted plumb for accurate temperature control and to ensure proper air movement through the sensor e f mounting onto sheetrock or plaster use the plastic threaded anchors pre drilling holes is not usually necessary and the two M3 5 x 20 mm mounting screws e For mounting onto an electrical junction box use the two 6 32 x 3 4 in screws Before beginning installation consider the location considerations below Also refer to the unit wiring schematic for specific wiring details and point connections Location Considerations Avoid mounting the sensor in an area subject to the following conditions e Dead spots such as behind doors or in corners that do not allow
159. ng or cooling to the space Ifa local fan mode switch determines the fan operation the OFF position controls the fan to off The user can communicate a desired operating mode such as OFF heat and cool to the controller If OFF is communicated to the controller the unit controls the fan to off There is no heating or cooling Table 46 Valves remain closed UC400 Probable Cause Unit wiring Failed end device No power to the controller Diagnostic present Normal operation Explanation The wiring between the controller outputs and the valve s must be present and correct for normal valve operation Refer to applicable wiring diagram The valves must be checked to ensure proper operation If the controller does not have power the unit valve s will not operate For the controller to operate normally apply an input voltage of 24 Vac If the Marquee Power LED is OFF continuously the controller does not have sufficient power or has failed Several diagnostics affect valve operation For detailed information about these diagnostics refer to Table 34 p 95 The controller opens and closes the valves to meet the unit capacity requirements 103 S TRANE Diagnostics Table 46 Valves remain closed UC400 continued Probable Cause Unit configuration Random start observed Requested mode off Entering water temperature Sampling logic Valve configuration Table 47 Probable
160. ngaged with a button on the housing Refer to Table 2 p 9 for face and bypass actuator specifications Power supply 24 Vac 20 50 60 Hz Modulating Water Valves Option The modulating 24 Vac 10 control valve provides optimum control of hot and chilled water flow in various heating and cooling applications They are designed to provide sinusoidal valve actuator Angle of rotation Maximum 95 degree travel and operate silently resisting water hammer ee een eee The actuator on the valve is a 24V 3 point floating type Refer to Table 3 for modulating water valve specifications External push button Control signal 3 point floating Table 2 Face bypass actuator specification Isolation Valve Option The isolation valve is a two position 24V spring return type valve It provides added control in heating and cooling applications when used in conjunction with the face and bypass damper On heating coils and two pipe changeover applications the valve is normally open to help prevent the coil from ae freezing in case of power loss Table 3 Mod water valve specification For cooling the valve is normally closed and opens when there is a call for cooling Refer to Table 4 p 9 for isolation valve specifications Table 1 OA RA actuator specification Power supply 24 Vac 50 60 Hz Max duty cycle 15 15 Operating ambient temp 0 to 65 C reoeo eso Min max fluid temp 1 to 95 C Pree Gate OOO differentia
161. nged at any time after initial association has been established 9 Setthe three rotary address switches Figure 39 p 33 locations S1 S2 S3 onthe sensor to the same address as the receiver 10 Record the address and location of the receiver and sensor pair e After verifying that the receiver and sensor are powered up press the Test button on the sensor to establish that the signal strength Testing Signal Strength Wireless Controls p 97 and the battery life Testing Battery Status Wireless Controls p 98 are adequate for proper functioning Disassociation Wireless Controls The receiver disassociates from the sensor by removing all stored association information conducts a channel scan and restarts itself if any of the following are true e The receiver address is changed from its current setting 001 999 99 S TRANE Diagnostics e The receiver receives a disassociation notification from its associated sensor e The receiver does not receive a communication from its associated sensor within 50 minutes e The sensor and receiver are associated and communicating at the time the sensor is set to 000 and the Test button is pressed Note A disassociated sensor will transit an association request every 10 minutes Sensor Receiver Compatibility Wireless Controls Version 1 5 p n X13790854 and X13790855 and higher receivers are compatible with all sensors models and support all function
162. nk pattern is On for 1 4 s Off for 3 4 s with 2 s Off between repe titions Table 40 Battery status Battery symbol on model WDS sensor display wireless controls Battery User test action symbol Indicates Press Test Full battery power button 50 battery life left 25 battery life left Replace batteries Flashing symbol indicates that approximately 14 days of operation remain before the battery is too weak to power the sensor 24 V Power Status Indicator Wireless Controls LED5 on the receiver of all models Figure 65 p 96 lights and stays constantly On when 24 V power is normal Using the Wireless Sensor System to Check Signal Strength on a Site Wireless Controls Follow these steps to check the signal strength on a site 1 Power up a receiver with a 24 V transformer user supplied 2 Associate the sensor to a receiver of the same model intended for the job 3 Place the receiver at the desired location Place or hold the sensor at the desired location Press the Test button S5 on the sensor and observe the signal strength as indicated by LED1 LED2 and LED3 on model WZS and on the display on model WDS Figure 66 p 97 UV SVNO3F EN For more information on interpreting the LEDs and the display symbols that indicate signal strength see Testing Signal Strength Wireless Controls p 97 Replacing Sensor Batteries Wireless Controls Sensor battery type length of life and installation ar
163. nsing units Reference must also be made to UV SVNO3F EN the condensing unit installation and wiring manuals which are shipped with the condensing unit Note The ETL listing mark applied to a unit ventilator does not apply to any associated refrigerant condensing unit Refrigerant Piping WN ANTI Ne Hazard of Explosion and Deadly Gases Never solder braze or weld on refrigerant lines or any unit components that are above atmospheric pressure or where refrigerant may be present Always remove refrigerant by following the guidelines established by the EPA Federal Clean Air Act or other state or local codes as appropriate After refrigerant removal use dry nitrogen to bring system back to atmospheric pressure before opening system for repairs Mixtures of refrigerants and air under pressure may become combustible in the presence of an ignition source leading to an explosion Excessive heat from soldering brazing or welding with refrigerant vapors present can form highly toxic gases and extremely corrosive acids Failure to follow all proper safe refrigerant handling practices could result in death or serious injury Unit ventilators with direct expansion cooling contain a nitrogen holding charge in the evaporator coils Connections are pinched off at the factory To connect the condensing unit lines cut off the stubouts and swage The condensing unit lines can then be brought into the swage and brazed Trane recommends th
164. nsor on the bypass line if possible to avoid measuring standing water temperature e If a 4 pipe unit with changeover function is selected the heating input will drive the main coil if hot water is detected but will always drive the auxiliary coil or electric heat where available e Where electric heat is available with a changeover coll the electric heat is factory configured to be deactivated ifthere is hot water available and if there is a fan failure The CSTI board comes with courtesy valve inversion relays that allow both normally open and normally closed two position valves to be used with simple thermostats that do not have the configurability to adapt to the customer choice of valves Independent switches SW1 and SW2 are provided for 2 pipe or 4 pipe units or 2 pipe units with an optional reheat coil The functions of SW1 and SW2 is downstream of the changeover function SW3 and ECM engine board Decisions made by the changeover circuits will be flowed to the inversion circuits if they are selected SW3 enables or disables the changeover function for 2 pipe changeover coil units or 4 pipe units where the coil has both a heating cooling circuit and a heating circuit piped internally If SW3 is turned off the changeover function will be disabled and the unit will then be configured as a cooling only coil a heating only coil ora combination of cooling only heating only coil Thus customer cooling requests will drive
165. occupied heating or cooling setpoints The occupied bypass time which resides in the UC400 controller and defines the duration of the override is configurable from 0 to 240 minutes default value of 120 minutes When the occupied bypass time expires the unit transitions from occupied bypass mode to unoccupied mode Pushing the CANCEL button cancels the timed override request In addition it will end the timed override before the occupied bypass time has expired and transition the unit from occupied bypass mode to unoccupied mode If the controller is in any mode other than unoccupied mode when the ON button is pressed the controller still starts the occupied bypass timer without changing to occupied bypass mode If the controller is placed in unoccupied mode before the occupied bypass timer expires the controller is placed into occupied bypass mode and remains in this mode until either the CANCEL button is pressed on the Trane zone sensor or the occupied bypass time expires Zone Temperature Control UC400 The UC400 controller has three methods of zone temperature control e Cascade zone control used in the occupied occupied bypass and occupied standby modes It maintains zone temperature by controlling the discharge air temperature to control the zone temperature The controller uses the difference between the measured zone temperature and the active zone temperature setpoint to produce a discharge air temperature setpoint Th
166. of the incoming fresh air from the economizer if any Two pipe changeover units with electric heat use the electric heat only when hot water is not available Manual Fresh Air Damper Tracer ZN520 Units with the manual fresh air damper option ship with the damper in the closed position which is adjustable from zero to 100 percent in 25 percent increments To adjust the position first remove the air filter to expose the damper stop screw on the control panel end Relocate the stop screw to the appropriate position Then loosen the stop screw wingnut and adjust the linkage Economizer Damper Option Tracer ZN520 With a valid outdoor air temperature either hard wired or communicated Tracer ZN520 uses the modulating economizer damper as the highest priority source of cooling Economizer operation is only possible through the use of a modulating damper Economizing is possible during the occupied occupied standby unoccupied and occupied bypass modes The controller initiates the economizer function if the outdoor air temperature is cold enough to be used as free cooling capacity If the outdoor air temperature is less than UV SVNO3F EN the economizer enable setpoint absolute dry bulb the controller modulates the outdoor air damper between the active minimum damper position and 100 percent to control the amount of outdoor air cooling capacity When the outdoor air temperature rises 5 F above the economizer enable point
167. ol as quickly as possible The user can communicate a desired operating mode such as OFF heat or cool to the controller If OFF is communicated to the controller the unit closes the outdoor air damper UV SVNO3F EN Table 50 Outdoor air damper remains open Probable Cause Unit wiring Failed end device Normal operation Unit configuration Explanation The wiring between the controller outputs and the outdoor air damper must be present and correct for normal outdoor air damper operation Refer to applicable wiring diagram Check damper actuator to ensure proper operation The controller opens and closes the outdoor air damper based on the controller occupancy mode and fan status Normally the outdoor air damper is open during occupied mode when the fan is running and closed during unoccupied mode Refer to the section Modulating Outdoor Return Air Damper UC400 p 84 The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device the outdoor air damper may not work correctly UV SVNO3F EN S TRANE Diagnostics Troubleshooting ECM AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energiz
168. old water is inferred by the ECM engine if a A10K NTC thermistor similar to Trane part number X13790374010 is wired properly to the engine board through the crossover cables and CSTI adapter boards b The input impedance of the thermistor circuit must be set correctly the A PU parameter should be set to im for CSTI units c The temperature sensed is lower than the A iri parameter d The A ib parameter is higher than the Al ier parameter e The temperature is not in the dead band between the A b parameter and the A r parameter in this case previous state will be retained 4 The customer thermostat is properly hooked up the input strip 1TB3 and is requesting cooling input V1 based on the customer cooling setpoint being lower than the space temperature Heating In general the CSTI changeover function will provide heating if 1 A unit is factory configured with a changeover coil cooling heating as the only coil or as the main coil portion 2 SW3 on the CSTI adapter board is turned on and the FPru parameter set to EHe or EMFS to use the changeover functions a Ehu parameter should be chosen if the unit has a changeover coil without electric heat b EHFS parameter should be chosen if the unit has a changeover coil with electric heat Generally this will perform the same as the Eh parameter but will in addition disable the heating function on electric heat and on the changeover coil hea
169. ommunicated request usually provided by the building automation system or peer device e By pressing the zone sensor s timed override On button e Occupancy binary input e Default operation of the controller occupied mode A communicated request from a building automation system or another peer controller can change the controller s occupancy However if communication is lost the controller reverts to the default operating mode occupied after 15 minutes configurable specified by the receive heartbeat time if no local hard wired occupancy signal exists A communicated request can be provided to control the occupancy of the controller Typically the occupancy of the controller is determined by using time of day scheduling of the building automation system The result of the time of day schedule can then be communicated to the unit controller 74 Tracer Summit with Supply Fan Control Tracer ZN520 If the unit is communicating with Tracer Summit and the supply fan control programming point is configured for Tracer the factory configures as local Tracer Summit will control the fan regardless of the fan mode switch position When the fan mode switch is set to Off or when power is restored to the unit all Tracer ZN520 lockouts latching diagnostics are manually reset The last diagnostic to occur is retained until the unit power is disconnected Refer to Trane publication CNTI SVX04A EN Tracer ZN520 Unit Con
170. onfiguration kit that allows easy powering of the engine board outside of the unit with a 9V battery For safe operation it is necessary to configure replacement boards to match the setup switch configuration of the previously installed boards Ensure that new circuit modules are firmly seated on the nylon standoffs and that the nylon standoffs are firmly seated on the metal panel 108 NOTICE Equipment Damage The motor harness attached to the single plug to which the motor mates contains the very important 115V motor voltage jumper the motor harness should always be present for 115V units and should not be modified or substituted Failure to follow this instruction could result in equipment damage Notes Ensure that drip loops are maintained on wiring on pipe end of unit to avoid wicking of water into the unit Before assuming that any of the boards or components in the new system have failed please ensure that the ECM engine board has been configured correctly and that the switches on the CSTI board where applicable are set correctly It is necessary to configure the service replacement ECM engine board before commissioning the unit The ECM engine board is pre configured with safe values but will NOT work correctly unless properly configured Only genuine Trane replacement components with identical Trane part numbers should be used Unit fan assemblies contain concealed wires that should be remov
171. or runaway condition Assuming Motor 1 has an overspeed condition In this case the Status Display will be interrupted to display OSPd rier OSPd Solution i Ensure that set screw is attached firmly to the motor shaft ii Ensure that motor plugs and all plugs to adapter boards and the ECM engine board are secure ili Verify that the configuration does not specify a speed lower than 450 rpm for the affected motor Speeds below 450 rpm are not supported on fan coil units UV SVNO3F EN 3 VSP Inputs 0O 10V inputs are of the wrong polarity Verify that variable speed VSP inputs are properly wired to 1TB4 Notes e Do not short the courtesy 10 Vdc supply to chassis or loads that require greater than 10 mA of DC current e Please observe proper polarity of 0 10 Vdc inputs Failure to observe proper polarity can cause failure of the ECM engine board the customer supplied controller or the Tracer ZN controller 4 Customer Controller output signal to VSP Inputs are too low Note If the customer supplied controller outputs signals that are below the noise threshold they will be ignored by the ECM Engine The ECM Engine board contains an adjustable noise floor parameter uFLr that can be configured to reject signals below the noise floor Ifthe noise floor parameter is set too high it can be lowered as long as there are acceptable noise levels on the inputs lines Trouble
172. or code E0 E7 is displayed LL errorcode technical assistance may be required Lock Symbol al Indicates The lock symbol appears if you try to ee adjust a setting that cannot be setting Is locked changed Testing Signal Strength Indicates Indicates Indicate excellent Yal satisfacto Y al S poor Yul signal ry signal signal strength strength strength Press the Test button to display the signal strength symbols Testing Battery Status Indicates full Indicates Indicates 25 battery power 50 of of battery life z battery life a left Replace left batteries Flashing symbol indicates that approximately 14 days of operation remain Press the Test button to display the battery status symbols Use only UL listed non rechargeable 1 5 V lithium AA batteries Trane p n X13770035010 or equivalent 39 S TRANE Installation Sensors Wireless Sensor Specifications The following table presents specifications for all models of the wireless sensor sets Sensor operating temperature 32 F to 122 F Receiver operating temperature 40 F to 158 F Storage temperature 40 F to 185 F Storage and operating humidity 5 to 95 non condensing range Accuracy 0 5 F over a range of 55 F to 85 F Resolution 0 125 F over a range of 60 F to 80 F 0 25 F when outside this range Setpoint functional range WDS 50 F to 89 6 F only Receiver voltage 24 V nominal ac dc 10 Receiver po
173. or serious injury Supply Power Supply power wiring is to be connected to the following line terminals in the right hand end pocket e 208V or 240V 3 phase 3 wire system L1 L2 and L3 e 480V 3 phase 4 wire system L1 L2 L3 and N neutral See Wiring Diagrams p 84 for a typical unit line and interconnecting wiring diagram for electric heat coils NOTICE Equipment Damage 480 V 3 Wire is NOT compatible with Trane Classroom Unit Ventilator equipment There must be a 4 wire system with a separate ground Failure to provide a 4 wire system could result in equipment damage UV SVNO3F EN S TRANE Installation Electrical Note The supply neutral wire must be connected to the neutral terminal block Operational controls and an electric heating safety device are factory mounted The safety device is a high temp cut out which de energizes electric heating elements through the K1 safety contactor DX System Atypical unit ventilator with DX coil includes an outside air thermostat a frost prevention thermostat and a 24 V transformer for condensing unit control Wire sizing is the same as given for the thermostat wiring in the condensing unit installation instructions or may be obtained from the nameplate The condensing unit must be controlled by the same room thermostat that also controls the unit ventilator 43 S TRANE Installation Electrical Split System Start Up After all
174. ot points at the notch in the side of the body 90 to flow direction This protects the plug inside the valve by removing it from the seat see Figure 23 28 Figure 23 Preparation for soldering SHAFT SLOT IN VALVE STEM POINTING TO NOTCH ON SIDE OF NOTCH j Sas BODY 3 Sweat the joints keeping outer surface free from solder Note Do not use silver solder due to high temperature requirements Heating Coils with Direct Expansion Cooling Heating options for direct expansion cooling in the unit ventilator are hot water steam or electric heat These coils facilitate direct expansion cooling with standard capacities The supply and return connections are located in the right hand end pocket Hot water field connections are made with a 5 8 in 15 9 OD male sweated joint while steam coils have a 1 in 25 4 male pipe thread MPT connection Refer to Table 8 p 24 for coil connection sizes Electric heat coils provide a third way to supply heating to the direct expansion cooling The coil utilizes three to six preheat elements which are factory wired UV SVNO3F EN Installation Sensors Control Options Figure 24 Unit mtd temp sensor SP OCC UNOCC OALMH Electric heat with auto and off speeds X13790844 01 unit Figure 25 Unit mtd display sensor SP OCC UNOCC COMM maw X13790886 04 unit 3 speed Figure 26 Unit mtd display sensor SP OCC UNOCC COMM mw X1379088
175. other speed Initially running on high speed provides adequate torque to start the fan motor from the OFF position Note In occupied mode the UC400 controller requires continuous fan operation because of cascade zone control In unoccupied mode the fan cycles Manual Fan Speed Control UC400 Regardless of the fan type the fan runs continuously at the desired fan speed during occupied occupied standby and occupied bypass operation as follows e When the controller receives a communicated fan speed signal HIGH MEDIUM LOW e The associated fan speed switch is set to a specific fan speed e The Supply Fan Speed Request point is overridden During unoccupied operation the fan cycles between OFF and HIGH regardless of the communicated fan speed signal or fan speed switch setting unless either of these is OFF which in turn will control the fan OFF The fan turns OFF when e The controller receives a communicated OFF signal e The fan speed switch is set to OFF e Specific diagnostics are generated e The default fan speed is set to OFF and the fan is operating in the AUTO mode Note The supply fan speed source can be configured for BAS local or default value control using the Tracer TU service tool AUTO Fan Operation 1 2 3 speed Fans UC400 When the controller receives a communicated auto signal or the associated fan speed switch is set to AUTO with no communicated value present the fan operates in the
176. outs for coil piping and electrical connections Location Considerations Selecting the appropriate location for installing a unit is very important The following factors should be considered AWARNING Heavy Object Floor structure must be strong enough to support the weight of the unit Consult the structural plans and have a structural engineer ensure the floor can withstand the weight of the unit Inadequate structural support could result in unit falling Failure to follow recommendations could result in death or serious injury 1 Floor design must have sufficient structure to withstand the weight of the unit while allowing for openings in the floor for a return air duct electrical and piping supply lines fed through the floor Refer to Dimensions and Weights p 11 for unit weights 2 Wall space design should allow the unit to be mounted to the wall securely The wall surface behind the unit should be smooth and level Wall and floor moldings should be removed prior to installation A wall slightly out of level may cause problems with unconditioned air leaking into the room Remove any object projecting more then 1 8 in 0 3175 cm from the wall surface Note Additional gasket or furr strips may be installed to accommodate for an uneven wall 3 There are two removable knock outs in the rear of the unit on either end for piping and electrical supply lines A pipe chase is located in the upper back portion
177. p 72 General Information 72 Fan Mode Switch Operation 72 Tracer ZN520 Operation 72 UC400 Controller Operation 73 Tracer ZN520 Sequence of Operation 73 Cooling Operation Tracer ZN520 74 Fan Mode Operation Tracer ZN520 75 UC400 Sequence of Operation 80 Power up Sequence UC400 80 Random Start UC400 80 Occupancy Modes UC400 80 Timed Override Control UC400 81 Zone Temperature Control UC400 81 Discharge Air Tempering UC400 82 Heating or Cooling Mode UC400 82 Entering Water Temperature Sampling Func tion UC400 20 cee 82 Fan Operation UC400 82 Exhaust Control UC400 83 Valve Operation UC400 83 Modulating Outdoor Return Air Damper OCOD canes eae ad hea A 84 Two position Control Of A Modulating Out door Air Damper UC400 85 Electric Heat Operation UC400 85 Dehumidification Operation UC400 85 Peer to peer Communication UC400 85 Unit Protection Strategies UC400 85 Maintenance ccc cee eee ee 87 Service ACCESS 0c nnna eee 87 Periodic Maintenance 0 4 87 Preventive Maintenance 89 Diagnostics ce es 90 Troubleshooting Checklist 90 Output Testing and Diagnostics Tracer PINS ZO ob niere baie da a et dee a re
178. piping and wiring has been completed follow the instructions provided with the condensing unit for control testing and system start up If sweat type field piped systems are being used then pressure testing evacuation and refrigerant charging will be required Two bulbs will also be shipped with a split system unit e Frost stat bulb e TXV valve used with R 410A Both components are to be field installed using the installation kit shipped with the unit For complete installation instructions and locations refer to the tag attached to the coil Refer to Figure 41 p 44 for an example of the installation tag Figure 41 Frost stat TXV valve installation tag IMPORTANT INSTALLER MUST MOUNT THERMAL EXPANSION VALVE BULB AND FROST O PROTECTION BULB if suppled TO SUCTION LINE AFTER CONNECTION OF FIELD REFRIGERANT PIPING X39001939010A MOUNT BULB IN RECOMMENDED HORIZONTAL PLANE BULB PLACEMENT Note Depending on the controls package ordered with the unit not all installations will require mounting the frost stat bulb 44 UV SVNO3F EN ECM Overview and Setup Overview This section changes to vertical unit ventilator units integrating new Trane Brushless DC motors and controllers This exciting new series delivers outstanding comfort safety and performance with greatly reduced energy consumption compared to traditional units with permanent split capacitance AC motors The new series of units will provide a long s
179. potential When wiring sensors and other input devices to the Tracer controller avoid creating ground loops with grounded conductors external to the unit control circuit AWARNING Ground loops can affect the measurement accuracy of the controller Fire Hazard When installing field provided controls do not alter or All input output circuits exceptisolated relay contacts and remove any built in unit safeties Tampering with unit optically isolated inputs assume a grounded source safeties could cause unit overheating and possible fire either a ground wire at the supply transformer to control hazard which could result in death or serious injury panel chassis or an installer supplied ground Wall Mounted Control Interconnection Wiring The installer must provide interconnection wiring to connect wall mounted devices such as a fan mode switch or zone Control Power Unit ventilator controls and control wiring can be factory mounted or field installed Wiring diagrams illustrate the standard unit motors with sensor module Refer to the unit wiring schematic for one or more speed controls Terminal wiring iS provided specific wiring details and point to point wiring by Trane and the actual components used for a particular connections Dashed lines indicate field wiring on the unit installation may differ Control and line diagrams for the wiring schematics All interconnection wiring must exact control system used are provided with each unit
180. r The illustration below shows an example of BACnet link wiring with multiple UC400 controllers Note For more details refer to Wiring Guide Unit Controller Wiring for the Tracer SC System Controller BAS SVNO3D EN or the most recent revision wo ee IQ ae ube Cn TT l Z A 22000000 beos m Le Ce BE mT ae ee CA Canneman 2S l UTII m El SO Gleleccss sic l w _ wee a Tracer SC i ee ae ES A a Pa Zone Zone Sensor Sensor Sensor i L l a Zone sensor 22000208 At i Eo ees fi communications jack wiring oem lore ps j amp wr Pee aa ae Trane BACnet Terminator UV SVNO3F EN S TRANE Wired Controllers Communication Wiring Power Supply Please read all of the warnings cautions and notices below befo
181. r temperature to its low limit Discharge Air Tempering Tracer ZN520 The discharge air tempering function enables when cold outdoor air is brought in through the outdoor air damper causing the discharge air to fall below the discharge air temperature control low limit The controller exits the discharge air tempering function when heat capacity has been at 0 percent for five minutes Heating Operation Tracer ZN520 During heating mode the Tracer ZN520 controller attempts to maintain the space temperature at the active heating setpoint Based on the occupancy mode of the controller the active heating setpoint is one of the following e Occupied heating e Occupied standby heating e Unoccupied heating During dehumidification in the heating mode the controller adjusts the heating setpoint up to the cooling setpoint This reduces the relative humidity in the space with a minimum of energy usage The controller uses the measured space temperature the active heating setpoint and discharge air temperature along with the control algorithm to determine the requested heating capacity of the unit 0 percent 100 percent The outputs are controlled based on the unit configuration and the required heating capacity Unit diagnostics can affect the Tracer ZN520 controller operation causing unit operation to be defined as abnormal Refer to Diagnostics p 90 for more information about abnormal unit operation The heating ou
182. rain pan Figure 61 Access to Fanboard amp Motor The unit ventilator fan board can be removed for service to the blower motor and fan wheels The fan board must also be removed for easier access to the unit coils for cleaning and maintenance Utilize the following steps for proper removal of the fanboard AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Turn off power to the unit and remove the front panel Disconnect P trap from drain pan Disconnect motor plug eo aged ee Slide fan board by pulling deck forward see Figure 62 Equipment Damage Support the fanboard to prevent the deck from sliding too far forward and falling out of the unit Failure to do so could cause equipment damage 5 When reinstalling use the same steps in reverse order Motor The fan motor is a permanent split capacitor type motor with voltage specific power See electrical performance and Table 25 for motor voltage 88 Table 25 Motor voltage Unit voltage Motor voltage 115 60 1 115 60 1 208 60 1 208 230 60 1 230 60 1 208 230 60 1 208 60 3 208 230 60 1 460 60 3 277 60 1 277 60 1 277 60 1 230 60 3 208 230 60 1 If a replacement motor is required it should be ordered from The
183. ration Warm up and cool down sequence Requested mode off Explanation The wiring between the controller outputs and the end devices must be present and correct for normal operation Refer to applicable wiring diagram Check the control contactors or the electric heat element including any auxiliary safety interlocks to ensure proper operation If the controller does not have power heat outputs do not operate For the controller to operate normally apply an input voltage of 24 Vac If the Marquee Power LED is OFF continuously the controller does not have sufficient power or has failed Several diagnostics affect DX and electric heat operation For detailed information about these diagnostics refer to Table 34 p 95 The controller controls compressor or electric heat outputs as needed to meet the unit capacity requirements The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device DX or electric heat may not operate correctly The user can communicate a desired operating mode such as OFF heat and cool to the controller If OFF is communicated to the controller the unit shuts off the compressor or electric heat When the fan is OFF with no demand for capacity 0 and the outdoor air temperature is below the freeze avoidance setpoint the controller disables compressors and electric heat outputs 100 to
184. ration of the wall fin controls Unit utilizes Wall Fin auxiliary radiation Room too hot X Room sensor is not properly set Reset room sensor temperature X Clogged filter Replace filter X Face and bypass damper or coil valve is Replace malfunctioning component or malfunctioning contact the control s contractor or if Trane controls see CNT SVX04A EN for more information concerning Tracer controls X OA damper is in the open position Ensure OA damper is in the minimum outside air position X Chiller temperature design requirements not Check the temperature of the water leaving being met the chiller to ensure that it meets design requirements Motor X If the motor fails to start and other motors Check the unit switch to ensure it is in the ON on the same circuit are functioning position X If the motor fails to start and other motors Check for loose switch or motor connection on the same circuit are functioning Unit X X If the unit fails to start Check fuse in right hand end pocket inside the 265 and 460 volt unit Output Testing and Diagnostics Tracer ZN520 Table 26 Tracer ZN520 diagnostics Diagnostic Condensate Off overflow Low temperature Off detection Low air flow fan Off failure Space Off temperature failure Entering water On temp failure Discharge air Off temp low limit Discharge air Off temp failure Fresh airtemp On failure Relative humidity On failure Generic 4 20MA On failure
185. rd auxiliary temperature sensor e The engine incorporates various safety and lockout Figure 45 CSTI adapter board features such as maintaining proper fan speeds if electric heat is called for Standard Adapter Board Figure 44 Adapter board Note Customer Low Voltage Interface for Fan Speeds Variable Fan Speed and 24 Vac Supply e The adapter allows direct customer interfacing through the use of terminal strips Standard interfacing includes Fan Speeds H M L for wall mounted fan speed switches Variable speed 0 10V inputs e The standard adapter board eliminates many separate wiring harnesses in the panel and allows simple mistake proofed single plug interfacing of The ECM engine controller Transformers Motors Valves Dampers Electric heat control Fan speed switches Main Power except electric heat e Electric heat lockout circuits and fan proving circuits for electric heat are standard and are pre configured at the factory 46 400 2518 C RE W i a Cz Customer Low Voltage Interface for Valves Electric Heat Dampers Fan Speeds Variable Fan Speed and 24 Vac Supply Valve s Electric Heat and Changeover Configuration Switches Factory Set Performs all the functions of the standard adapter module but in addition provides convenient field connections to factory mounted end devices including Valves
186. rds are made to the terminal strips on both adapter boards Screw terminal blocks provide convenient access to fan controls for High Medium Low and Variable speed In addition a courtesy 10 Vdc supply is provided for use with an external potentiometer or rheostat The 10 Vdc supply supports up to 10 mA draw TB3 right five positions is normally used to provide 24V hookup to a wall mounted fan speed switch and to accept the returns from the switch for High Medium and Low requests TB4 left three positions is normally used to control the system with a 0 10 Vdc output from a thermostat controller or a fan control rheostat potentiometer The terminal block functional assignments and polarity are shown for reference only and the schematics that ship with each unit should be consulted before wiring Wiring assignments are configured for each unit UV SVNO3F EN CSTI Adapter Board Field Connections Figure 47 CSTI adapter board field connections 3 2 1 13 121110 9 8 7 6 5 43 2 1 4 i aJa _ gt J dje fejejejejejeija ial pat peal ja 1 VSP 10V 6 Low 2 VSP 0 10V 7 V10p Cooling VSP DC COM 8 Notused 9 Not used 1 24 Vac Y hot 10 V1C1 not std 2 Damper Open 11 V2O0p EH1St Heating 3 24 Vac Y gnd 12 V2C1 EH2St not std 4 High 13 Dmp Cl not std 5 Medium The CSTI adapter board provides all the hookups of the standard adapter board but in addition provides hookups for valve control ma
187. re proceeding with this section AWARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury A CAUTION Personal Injury and Equipment Damage After installation make sure to check that the 24 Vac transformer is grounded through the controller Failure to check could result in personal injury and or damage to equipment Measure the voltage between chassis ground and any ground terminal on the UC400 controller Expected result Vac 4 0 V NOTICE Avoid Equipment Damage Sharing 24 Vac power between controllers could cause equipment damage A separate transformer is recommended for each UC400 controller The line input to the transformer must be equipped with a circuit breaker sized to handle the maximum transformer line current If a single transformer is shared by multiple UC400 controllers e The transformer must have sufficient capacity e Polarity must be maintained for every UC400 controller powered by the transformer Important _ f the polarity is inadvertently reversed between two controllers powered by the same transformer a difference of 24Vac will occur between the grounds of each controller which can result in e Partial or full loss of communication on the entire BACne
188. rease The fan will deliver more cfm for the same rpm if the static is decreased and the fan power will increase A unit with high static configuration should not be used to free deliver air i e with no ducting attached Field Power Wiring Note This product uses an electronic variable speed motor control which includes a line reactor to minimize power line harmonic currents It is recommended that good wiring practices be followed to manage building electrical power system harmonic voltages and currents to avoid electrical system problems or other equipment interaction Performance Boundaries While the speeds of the fan motors can be adjusted never program a fan speed higher than 1700 rpm or lower than 450 rpm In many cases units configured for high static operation will not achieve the desired rpm if the ESP of the unit is too low or the unit is allowed to free discharge The ECM engine contains settings that will limit the output power of the motor under these overload conditions If the motors cannotachieve rpm close to the target for a specific period of time the unit will disable electric heat and fan status indicators MCA MES and Power Draw The Trane BLDC motors have variable output but are shipped at specific settings to deliver proper performance and reliability The power draw indicated in the catalogue indicates the power consumed when applied properly as shipped and with the nominal ESP applied Howev
189. requirement increases the water valve opens When the fan speed capacity switch points are reached the fan speed ramps up and the water valve repositions to maintain an equivalent capacity The reverse sequence takes place with a decrease in required capacity Low Med High The fan runs continuously at the selected speed and the valve option will cycle to meet setpoint UV SVNO3F EN Tracer ZN520 Sequence of Operation The Tracer ZN520 operates the fan in the following modes occupied unoccupied occupied standby occupied bypass oF WN Tracer Summit with supply fan control Occupied Tracer ZN520 When the controller is in the occupied mode the unit attempts to maintain the space temperature at the active occupied heating or cooling setpoint based on the measured space temperature the discharge air temperature the active setpoint and the proportional integral control algorithm The modulating control algorithm used when occupied or in occupied standby is described in the following sections Additional information related to the handling of the controller setpoints can be found in the previous Setpoint operation section Unoccupied Mode Tracer ZN520 When the controller is in the unoccupied mode the controller attempts to maintain the space temperature at the stored unoccupied heating or cooling setpoint based on the measured space temperature the active setpoint and the control algorithm regardless of the pre
190. rious injury Introduction Important Equipment is shipped FOB Free On Board at the manufacturer Therefore freight claims for damages against the carrier must be initiated by the receiver Trademarks ComfortLink EarthWise Rover Tracer Tracer Summit Trane and the Trane logo are trademarks or registered trademarks of Trane in the United States and other countries All trademarks referenced in this document are the trademarks of their respective owners BACnet is a registered trademark of American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE Echelon LonTalk and LONWoRKS are registered trademarks of Echelon Corporation Energizer is a registered trademark of Eveready Battery Company Inc National Electrical Code National Fire Protection Association and NEC are registered trademarks of the National Fire Protection Association UV SVNO3F EN S TRANE Warnings Cautions and Notices TRANE Table of Contents Introduction nsaan an anana ees 3 Model Number Descriptions 6 General Information 0006 8 Unit Description 000 0c ees 8 ODUOUG s24cneeeu5 be buraeass cates aes 8 ECM Application Notes 10 Dimensions and Weights 11 Unit Location and Clearances 11 Receiving and Handling 18 Pre Installation 0 19 Jobsite Inspection 000 ee 19 Jobsite Storage
191. roller For example if the rotary address dials are set to 042 both the MAC Address and the BACnet Device ID are 042 e tcan be soft set using the Tracer TU service tool If the BACnet Device ID is set using the Tracer TU service tool the rotary address dials only affect the MAC Address they do not affect the BACnet Device ID BACnet networks with a Tracer SC system controller On BACnet networks with a Tracer SC system controller the Device ID for the UC400 controller is always soft set by the system controller using the following scheme illustrated below UV SVNO3F EN Note The BACnet Device ID is displayed as the Software Device ID on the Tracer TU Controller Settings page in the Protocol group ae ing Vk 2 UC400 o z x e ma a i at eat gE te Se O o a ae N EUEN cee ae Sr ate ie SA SA 9 A SA SA A BACnet x100 x10 x1 x100 x10 x1 Device ID for o a this UC400 0 0 1 2 0 0 1 0012001 The first three digits The last three digits are determined by the are determined by the address rotary dials on rotary address dials the Tracer SC system on the UC400 controller controller The fourth digit is determined by the link number to which the UC400 controller is attached Connection Wiring Field supplied BACnet MS TP link wiring must be installed in compliance with NEC and local codes The wire must be low capacitance 18 gauge stranded tinned copper shielded twisted pai
192. s Receivers released prior to version 1 5 are compatible with only model WZS Replacing a Failed Sensor or Receiver Wireless Controls Note Receivers ship installed on the unit To remove the receiver press in the retention tabs on the underside of the receiver enclosure and push upward To replace a failed sensor or receiver 11 Confirm that the device is disassociated see Table 35 and Table 36 p 97 12 Set the rotary address switch of the new device to match the address of the remaining sensor or receiver Note There is no need to remove power from the remaining device 13 Apply power to the new device Association between the new and the remaining devices will automatically occur Note When replacing a WDS sensor the receiver version 1 5 or higher will automatically configure the sensor to match the last stored configuration if the sensor has not been placed into configuration mode and the factory default configuration is still valid If the sensor configuration does not match the desired system features it can be manually configured see Manual Association Wireless Controls p 99 Servicing and Testing Wireless Controls If the wireless sensor system is not working as expected use the tools and procedure described in this section Servicing and Testing Tools Wireless Controls No special tools or software are necessary to service and test the wireless sensor system Test the system by usin
193. s is critical to compatible with the on board motor and proper unit operation for correct speed calculation and calibration P Value Mtr 1 Pur g 03 Sets up the on board closed loop control to Do not change this setting control Motor 1 with proper stability I Value Mtr 1 Poe g 03 Sets up the on board closed loop control to Do not change this setting control Motor 1 with proper stability P Value Mtr 2 Pur rad g 03 Sets up the on board closed loop control to Do not change this setting control Motor 2 with proper stability I Value Mtr 2 uL C g 03 Sets up the on board closed loop control to Do not change this setting control Motor 2 with proper stability Ht Sens Mk Val F A Cin 85 Sets the make value for the engine board Operation also depends on FPr LJ A iCb and I triac output based on the thermistor input A U settings Ht Sens Bk Val F A b gp Sets the break value for the engine board Operation also depends on FPr A in and triac output based on the thermistor input A U settings Ht Sens Resistor H iPU oUF Sets the input impedance of the thermistor Should be pre set to OUT for Tracer ZN input controllers Mt 1 Ramp sec Ni I P J Sets the ramp rate for Motor 1 in per second Mt 2 Ramp sec nerP J Sets the ramp rate for Motor 2 in per second EH Rmp Accel FhrP 5 Sets the acceleration factor for the electric Is used to force faster ramps when electric heat heat inputs is requested Ramp MAX T
194. sence of a hard wired or communicated setpoint Similar to other configuration properties of the controller the locally stored unoccupied setpoints can be modified using Rover service tool In unoccupied mode asimplified zone control algorithm is run During the cooling mode when the space temperature is above the cool setpoint the primary cooling capacity operates at 100 percent If more capacity is needed the supplementary cooling capacity turns on or opens to 100 percent During the heating mode when the space temperature is below the heat setpoint the primary heating capacity turns on All capacity is turned off when the space temperature is between the unoccupied cooling and heating setpoints Note that primary heating or cooling capacity is defined by unit type and whether heating or cooling is enabled or disabled For example if the economizer is enabled and possible it will be the primary cooling capacity If hydronic heating is possible it will be the primary heating capacity Occupied Standby Mode Tracer ZN520 The controller can be placed into the occupied standby mode when a communicated occupancy request is combined with the local hard wired occupancy binary input signal When the communicated occupancy request is unoccupied the occupancy binary input if present 73 does not affect the controller s occupancy When the communicated occupancy request is occupied the controller uses the local occupancy binar
195. ser action WZS sensors display Indicates None LED1 Off No Test symbols Normal state LED2 Off appear e No Test button press LED3 Off Press Test LED1 Off Associated no button on the LED2 Off communication with sensor LED3 Off receiver e Associated but no signal from the receiver after pressing Test button LED1 On Excellent signal LED2 On strength LED3 On e Good signal margin Displays for 5 for reliable seconds then communication constantly Off LED1 Off LED2 On LED3 On Displays for 5 seconds then constantly Off e Moving sensor or receiver may improve Signal strength e Increased channel switching may reduce battery life LED1 Off LED2 Off LED3 On Displays for 5 seconds then constantly Off receiver to a better location Table 38 Observing signal strength on the receiver wireless controls User LED state receiver all action models None LED1 Off LED2 Off LED3 Off Press LED1 On Test LED2 On button LED3 On onthe Displays for 5 seconds then sensor constantly Off LED1 Off Satisfactory signal strength LED2 On e Adequate signal strength for LED3 On reliable communication Displays for 5 seconds then Moving sensor or receiver may constantly Off improve signal strength e Increased channel switching may reduce battery life Indicates Normal state e No Test button press Excellent signal strength e Good signal margin for reliable communication
196. shooting a motor that spins too fast or spins without any apparent speed request ECM Typical equipment and controls design practice will ensure that the fans will come on if there is a call for heat cool or ventilation In most cases we will depend on the controller thermostat to call for the fan to come on when appropriate but during calls for electric heat or calls for heat on CSTI units equipped with electric heat as a call for the appropriate fan speed This behavior as described previously is an indirect request When a call for electric heat is made the system will positively drive the fan on to the correct speed regardless of whether the controller has asked for fan operation or not The unit design incorporates an interlock instead of a lock out It does not lock out electric heat if the fan is set to off it brings the fan on Notes e In many cases indirect requests will result in fan behavior change regardless of whether the end device fails to actuate due to device failure or safety down stream lockouts If there is hot water available on CSTI units with changeover coils and electric heat we will still drive the fan to the appropriate electric heat speed e Thenewfan coil designs incorporate sophisticated fan interlocks that will lockout heat if there is a fan failure lf the preceding conditions do not describe the behavior of the unit the following checks should be performed e Verify that the volt
197. shortened to quickly observe proper unit on operation behavior and response to speeds Soft Rev GoFE uc D0 Displays the software version Fan Speed Response Verification 1 After performing controller specific commissioning observe the display on the ECM engine board with the power on to the unit The ECM engine display should display a looping status indicator as follows ner gt GD ikre DCT 0 FSEl oO FF gt FSEe gt OFF EhEn gt Un Notes 64 The EhEn indicator is unit specific and may indicate Off at this point refer to thermistor function for more information A representative fan speed of 1050 rom are shown in the following example Each unit is factory configured differently and will have different settings for different fan speeds While the unit remains on exercise the fan controls on the unit either directly or indirectly through request for unit heat cool Observe the fan spinning and then observe the fan display on the ECM engine board It should display a looping status indicator as follows For a size 075 or 100 unit using typical unit operating fan speeds nee 1050 nere 0 FSE gt Gn FSE2 OFF EhEn gt Un For a size 125 or 150 unit using typical unit operating fan speeds ner 1050 nere 1080 FSE i gt Gn FSE2 on EhEn gt Un Note The EhEn indicator is unit specific and may indicate Off
198. side wall Installing the sensor ata lower height may give the advantage of monitoring the temperature closer to the zone but it also exposes the sensor to airflow obstructions Ensure that air flows freely over the sensor Figure 36 Wall mounted wired and wireless zone sensor dimensions o O pp eowbabow easy ay A SY 1 0 31 in 7 3 39 in 2 TYPR 07 in R1 9 8 4 68in 3 TYP 0 24 in 9 2 48 in 4 2 9in 10 0 63 in 5 1 08 in 11 1 45 in 6 0 12 in 12 2 62 in Sensor When selecting a sensor location avoid the following e Areas of direct sunlight e Areas in the direct airstream of air diffusers e Exterior walls and other walls that have a temperature differential between the two sides UV SVNO3F EN e Areas that are close to heat sources such as sunlight appliances concealed pipes chimneys or other heat generating equipment e Drafty areas e Dead spots behind doors projection screens or corners e Walls that are subject to high vibration e Areas with high humidity e High traffic areas to reduce accidental damage or tampering e Metal barriers between the receiver a
199. systems support the occupancy function Model WDS Sensor To request and cancel temporary occupancy on a model WDS sensor see Requesting Temporary Occupancy p 39 End of Range Temperature Values Receiver The end of range temperature limits of the receiver for all models are 32 F to 122 F The receiver cannot replicate temperature values outside this range If the sensor transmits a temperature value to the receiver that is out of the receiver replication range the receiver will freeze the output at the end of range values This value will remain frozen until the transmitted temperature moves to between the end of range temperature limits Sensor The end of range temperature setpoint limits for the model WDS sensor is 50 Fto 89 6 F Receiver Power up Sequence When power is applied to the receiver one of the following sequences occurs The sequence is dependent on the address setting and the association status of the receiver Address set to 000 and receiver is not associated with a sensor e LED5 is constantly On indicating power is applied and the receiver is functional e All models Zone temperature and cooling setpoint default to 72 5 F WDS only The heating setpoint defaults to 70 5 F and the fan system output will be 2230 Q see Output Values Failure and Default Modes of Operation Wireless Controls p 101 e Status LED3 will display a 2 blink pattern diagnostic Table 35 p 97
200. t MS TP link e Improper function of the UC400 controller outputs e Damage to the transformer or a blown transformer fuse 69 S TRANE Wired Controllers Communication Wiring Transformer Recommendations A 24Vac power supply must be used for proper operation of the binary inputs which requires 24Vac detection In addition the spare 24Vac outputs may be used to power relays and TRIACS e ACtransformer requirements UL listed Class 2 power transformer 24Vac 15 device max load 24VA The transformer must be sized to provide adequate power to the controller 12VA and outputs maximum 12VA per binary output e CE compliant installations The transformer must be CE marked and SELV compliant per IEC standards Wiring Requirements To ensure proper operation of the UC400 controller install the power supply circuit in accordance with the following guidelines e A dedicated power circuit disconnect switch must be near the controller easily accessible by the operator and marked as the disconnecting device for the controller e 18 AWG 0 823 mm2 copper wire is recommended for the circuit between the transformer and the controller Important The controller must receive AC power from a dedicated power circuit failure to comply may cause the controller to malfunction DO NOT run AC power wires in the same wire bundle with input output wires failure to comply may cause the controller to malfunction due to electrical
201. t elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery The adapter boards contain high voltage Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding ACAUTION Burn Hazard On electric heat units certain parameter values are locked out to prevent overheating of the unit These functions will appear to be saved however they will not be accepted if the Electric Heat Protection setting is On Do not change the Electric Heat Protection setting to Off and make changes to the protected settings unless you are programming an unconfigured service replacement board to match the unit settings on a ECM configuration label Failure to follow this instruction could result in the unit overheating and becoming hot to the touch which could result in minor or moderate injury and or equipment damage NOTICE Equipment Damage Do not change the PWM output voltage settings as motor damage could occur Note The engine board functions and unit specific settings are summarized on the ECM engine configuration label affixed to the back side of the control panel
202. t if there are fan failures The auxiliary heating coil valve will continue to respond to customer heating requests 3 The ECM engine has sensed that there is hot water available on the supply bypass line for the changeover coil In this case hot water is determined if a A 10K NTC thermistor similar to Trane part number X13790374010 is wired properly to the engine board through the crossover cables and CSTI adapter boards 59 S TRANE ECM Overview and Setup b The input impedance of the thermistor circuit must be set correctly the A PU parameter should be set to in for CSTI units c The temperature sensed is higher than the A i b parameter d The A b parameter is higher than the Aliens parameter e The temperature is not in the dead band between the A b parameter and the A r parameter in this case previous state will be retained 4 The customer thermostat is properly hooked up the input strip 1TB3 and is requesting heating input V2 based on the customer heating set point being higher than the space temperature 5 The heating input on 1TB3 will drive the main changeover coil IF conditions 1 4 are satisfied but will always drive the auxiliary coil valve if present Electric heat will be locked out where present if hot water is available since SW4 will be factory set to ON in these units SW4 selects the electric heat lockout function where we will lock out the electric heat
203. t speeds for motors may be set too high a The FPru parameter may be set incorrectly b The A PU parameter may be set incorrectly UV SVNO3F EN Dimensions and Weights Unit Location and Clearances Locate the unit in an indoor area The ambient temperature surrounding the unit must not be less than 45 F Do not locate the unit in areas subject to freezing NOTICE Equipment Damage Do not locate the unit in areas subject to freezing Pipes could burst at lower temperature resulting in equipment damage Attention should be given to service clearance and technician safety The unit should contain enough space for service personnel to perform maintenance or repair Provide sufficient room to make water and electrical connection s Table 5 VUVE general data Description Unit length w o end covers in Unit depth standard in 16 5 8 Unit depth with false back in 21 1 4 Unit height standard in Shipping weight Ib Nominal filter size in and quantity AWARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring Improperly installed and grounded field wiring poses FIRE amp ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes All field wiring MUST be performed by qualified personnel Failure to follow these requirements could result
204. tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury Service Access To access the unit for water balancing motor access or other start up and maintenance functions use one of the following methods 1 Remove the end pocket front panel 2 Remove the return air grille by releasing the mounting screws 3 Ifthere is no shelving or other obstructions removing the end panel may allow more access Periodic Maintenance The following maintenance suggestions apply to all types of unit ventilators chilled water hot water split systems and electric Additional information for controls not supplied by The Trane Company should be obtained from the controls manufacturer Split system unit ventilators include a condensing unit and the instructions provided with the condensing unit will apply to the entire refrigerant system Filters The air filters supplied with Trane UVs are specially designed for high lint content Depending upon room conditions these filters will normally need to be replaced every four to eight weeks To assure proper unit operation inspect the filters monthly and clean or replace as required Overloaded filters will reduce unit air handling capacity which may result in insufficient heating during the morning warm up period and loss of natural cooling capacity during mild weather Filter Replacement The air filter on the vertical unit is located
205. tays open Tracer ZN520 Probable Cause Normal operation Manual output test Unit configuration Unit wiring 94 Explanation The controller opens and closes the fresh air damper based on the controller s occupancy mode and fan status Normally the fresh air damper is open during occupied mode when the fan is running and closed during unoccupied mode The controller includes a manual output test sequence that verifies analog and binary output operation and associated output wiring However based on the current step in the test sequence the fresh air damper may not be open Refer to Manual Output Test Tracer ZN520 p 92 The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actual end device the damper may not work correctly The wiring between the controller outputs and the fresh air damper must be present and correct for normal damper operation Refer to the typical unit wiring diagrams Table 33 Fresh air damper stays closed Tracer ZN520 Probable Cause Normal operation Warmup and cooldown Requested mode off Explanation The controller opens and closes the fresh air damper based on the controller s occupancy mode and fan status Normally the fresh air damper is open during occupied mode when the fan is running and closed during unoccupied mode The controller includes both a warmup
206. ted timed override or settings change 101 S TRANE Diagnostics Troubleshooting Tracer ZN520 1 Green STATUS LED Indicates Whether the Controller is Powered On 24 Vac Supplied 2 Yellow COMM LED Indicates if Communication is Functioning 3 Red SERVICE LED Indicates if Service is Needed Red SERVICE LED Tracer ZN520 During normal operation the LED is off continuously when power is applied to the controller If the LED is on continuously even when power is applied to the controller means that someone Is pressing the SERVICE button or that the controller has failed If the LED flashes once every second use Rover Trane s service tool to restore the unit to normal operation Refer to the Rover product literature for more information Note If the Service button is held down for more than 15 seconds on the Tracer ZN520 controller it will uninstall itself from the ICS communication network and shut down all unit operation Green STATUS LED Tracer ZN520 During normal operation the LED is on continuously If the LED blinks once the controller is in Manual output test mode If the LED blinks twice the controller is in Manual output test mode with one or more diagnostics present If the LED blinks 1 4 second on 1 4 second off for 10 seconds the controller is in the Wink mode Note The wink feature allows the identification of a particular controller When sending a request from a d
207. terns They respond independently of any user action see Table 36 Table 36 Diagnostics on the receiver wireless controls LED state Indicates LED1 Off Disassociated LED2 Off e Receiver is not associated waiting for a LED3 1 blink pattern sensor repeated continuously e Receiver lost communication with sensor e Receiver has no devices on its wireless personal area network e Association with a device has been manually removed LED1 Off Address set to 000 LED2 Off e Address not set to between 001 999 LED3 2 blink pattern repeated continuously LED1 Off LED2 Off LED3 3 blink pattern repeated continuously Not configured e Receiver configuration properties not properly set defective receiver a Blink pattern is On for 1 4 s Off for 1 4 s with 2 s Off between repe titions Testing Signal Strength Wireless Controls To initiate a signal strength test push the Test button on the sensor see location of Test button in Figure 66 p 97 e Models WZS LED1 LED2 and LED3 respond by indicating signal strength You can view them on the sensor Table 37 and the receiver Table 38 e Model WDS Test symbols on the sensor display indicate signal strength Table 37 LED1 LED2 and LED3 on the receiver respond by indicating signal strength Table 38 97 S TRANE Diagnostics Table 37 Observing signal strength on the sensor wireless controls Symbol WDS LED state sensor U
208. that has equipment protections and envelope enforcements Do not assume that the motor has failed without first consulting the ECM engine status diagnostics screen In many cases the engine shuts down the motor operation and locks it out to prevent equipment damage e Electric Heat operation and Changeover Coil controlon CSTI units are co coordinated by the ECM engine board Changeover function on Tracer ZN units can also be affected by incorrect configuration of the ECM engine or improper wiring of terminals to analog 105 S TRANE Diagnostics input 1 on the Tracer ZN controller polarity sensitivity e The mini access lid on the front of the main control panel lid has the ECM engine troubleshooting setup guide affixed to the back of the lid This guide is unit specific and should be consulted before determining the disposition of a unit General Information ECM The ECM engine oversees and monitors all motor operations and changes to speed resulting from e Direct Fan Speed Requests Customer Fan Speed Switches Thermostat Fan Speed On or 0 10V requests Automatic Fan Request from Tracer ZN UC controllers e Indirect Fan Speed Requests Electric Heat requests will bring the fan to the proper speed e Conflicting Fan Speed Requests lf two or more commands are received direct or indirect the fan will honor the higher speed requested Note In some cases indirect requests will result in
209. the Motor 1 will be assumed to be in an overspeed condition and will need to be shut down This envelope protection value should not be altered This envelope protection value should not be altered UV SVNO3F EN S TRANE ECM Overview and Setup Table 13 Configuration settings of the ECM engine board continued Notes Typical These notes are provided for reference E User User only and the ECM engine label must be Description on Interface Interface used as the ultimate guide for setting up an Unit Label Name Value Description engine board on specific units Mt2 Ovspd RPM r Price J000 Selects the rom above which the Motor 2 This envelope protection value should not be will be assumed to be in an overspeed altered condition and will need to be shut down Fan Proving Fct FPru FRS Selects which mode should be assigned to This setting has to be correct for proper unit the Binary output circuit depending on operation of electric heat and changeover units unit type AI Boost Amp A Sc J Boosts or attenuates the analog input A value of should be used if no voltage level signal to compensate for long wire runs compensation is needed i e voltage peak is at 10 Vdc AI Floor uF r nJ Rejects noise on the analog input lines and sets up the engine board to turn on if the thermostat or controller is commanding its analog outputs on PulsePerRev FdbH Ie Sets up the tachometer function to be Do not change this setting as thi
210. the controller disables economizing and moves the outdoor air damper back to its predetermined minimum position based on the current occupancy mode or communicated minimum damper position Table 18 Relationship between outdoor temperature sensors and damper position Tracer ZN520 Outdoor Air Temp Modulating Outdoor Air Damper Occupied or Occupied Bypass Occupied Standby Unoccupied None or invalid Open to Open to occupied Closed occupied standby minimum minimum position position Failed Open to Open to occupied Closed occupied standby minimum minimum position position Present and Economizing Economizing between Open amp economizing minimum occupied standby economizing feasible postion to minimum position to when unit is 100 100 operating closed Present amp Open to Open to occupied Closed economizing occupied standby minimum not feasible minimum position position Dehumidification Tracer ZN520 Dehumidification is possible when mechanical cooling is available the heating capacity is located in the reheat position and the space relative humidity setpoint is valid The controller starts dehumidifying the space when the space humidity exceeds the humidity setpoint The controller continues to dehumidify until the sensed humidity falls below the setpoint minus the relative humidity offset The controller uses the cooling and reheat Capacities simultaneously to dehumidify the space While dehumidifying the discharge a
211. the diagnostic is cleared If the unit undergoes another Low Coil Temp Detection diagnostic within a 24 hour period the unit will be locked out until it is manually reset Note Freeze protection will also perform a smart reset Low Coil Temperature Protection UC400 For more information refer to BAS SVX48B EN Installation Operation and Programming Tracer UC400 Programmable Controller or the most recent revision and the preceding section Smart Reset UC400 Condensate Overflow UC400 For more information refer to BAS SVX48B EN Installation Operation and Programming Tracer UC400 Programmable Controller or the most recent revision Fan Status UC400 In 1 2 and 3 speed fans the status is based on the statuses of the supply fan output multistate and analog points dedicated to fan control The fan status is reported as HIGH MEDIUM LOW and as a percentage whenever 85 the fan is running The fan status is reported as OFF whenever the fan is not running In addition a fan status switch can be connected to binary input 5 BI5 to monitor the status of the fan for belt driven or direct driven units except Trane Macon factory ECM fan motor units The fan status switch provides feedback to the controller as follows e lf the fan is not operating when the controller has the fan controlled to ON the controller generates a Low Airflow Supply Fan Failure diagnostic e If the UC400 controller energizes th
212. the display and the menus are separated by lines as illustrated below 2 Press the center button on the keypad to begin the configuration process CAD lt Center button cv gt 3 Configure the sensor options in the order shown in the table e Press or to scroll to the next selection as illustrated e Press or Cy to move to the next menu as illustrated 35 S TRANE Installation Sensors Setting Configuration Options Temperature e Choose Fahrenheit or Celsius e Choose the degree resolution ia m whole degrees half degrees or tenths of degrees In A U Setpoint setpoint setpoint System AD no system options enabled F ii Q Q Default Note Not all fan options are available es a a for all systems h AUTO SS A AUTO Ss auto off auto off auto off low low high med high BE 7 are Sil o IZ 9 9 9 2 off high on off low high off low no fan options med high enabled Occupancy timed override occupancy enabled 4 Reviewthe display to ensure that you have selected the correct configuration 5 To return the display to operating mode press the configuration button see Step 1 p 35 Note The sensor will revert to operating mode if no buttons are pressed for 10 minutes Optional Features Displaying Setpoint or Temperature You can configure the sensor to display either the temperature default or setpoint To select either option 1 Verify that the sensor
213. the heat cool mode input Depending on the state of the communicated request the unit may disable electric heat The controller includes a manual output test sequence that verifies analog and binary output operation and associated output wiring However based on the current step in the test sequence the electric heat may not be on Refer to Manual Output Test Tracer ZN520 p 92 A specific list of diagnostics affects electric heat operation For more information see Diagnostics p 90 The controller must be properly configured based on the actual installed end devices and application When the unit configuration does not match the actual end device the electric heat may not work properly If the controller does not have power electric heat does not operate For the controller to operate normally a 24 Vac input voltage must be applied When the green LED is off continuously the controller does not have sufficient power or has failed The wiring between the controller outputs and the electric heat contacts must be present and correct for normal electric heat operation Refer to the typical unit wiring diagrams ECM controls include sophisticated fan proving interlock circuitry that will disable electric heat if one or more motors are not performing normally On units with changeover coil and electric heat simultaneous operation of hydronic heat and electric heat is not allowed Table 32 Fresh air damper s
214. the main valve and heating requests will drive the auxiliary valve The changeover function is designed to work with customer controllers that request heating or cooling based on customer request but have coil water temperatures that are changed over from heating to cooling or cooling to heating depending on the season and the building equipment available Customer thermostats MUST be hooked to the correct terminal strip locations V1 and V2 for the changeover function to work Cooling In general the CSTI changeover function will provide cooling if 1 A unit is factory configured with a changeover coil cooling heating as the only coil or as the main coil portion 2 SW3 on the CSTI adapter board is turned on and the FPru parameter set to EH or EMFS to use the changeover functions a Ehu parameter should be chosen if the unit has a changeover coil without electric heat b EMFS parameter should be chosen if the unit has a changeover coil with electric heat Generally this UV SVNO3F EN S TRANE ECM Overview and Setup will perform the same as the Ehu parameter but will in addition disable the heating function on electric heat and on the changeover coil heat if there are fan failures The auxiliary heating coil valve will continue to respond to customer heating requests 3 The ECM engine has sensed that there is cold water available on the supply bypass line for the changeover coil In this case c
215. ting Signal Strength Wireless Controls p 97 and Testing Battery Status Wireless Controls p 98 34 Model WZS sensor LED1 LED2 d LED3 LED5 Test button ys S IC W Push firmly then release UV SVNO3F EN Model WDS sensor Yul im T Dia ao Test button A i I l l y Push firmly then release Configuring the Wireless Display Sensor Model WDS only Note Sensors shipped with the fan coil are pre configured for three speeds The configuration of the sensor determines which system features can be accessed and changes can be made by the tenant for example changes to cooling heating mode setpoint or fan speed Verify system and associated unit features before configuring the sensor The building owner or operator may choose to limit tenant access to certain features This can be done through configuration Or if a sensor is configured to match all control capabilities of the building automation system the locking feature can be used to restrict the tenant from making changes Configuration Procedure To configure settings on the model WDS sensor follow this procedure in the order presented 1 Press the configuration button for 3 seconds UV SVNO3F EN S TRANE Installation Sensors 03 Configuration button ee The display will change to configuration mode When the sensor is in configuration mode a wrench symbol appears on
216. tion only once every 24 hours For the controller to increment the 24 hour timer you must maintain power to the controller Cycling power resets all timers and counters After the controller detects the first special diagnostic the unit waits 30 minutes before invoking the automatic diagnostic reset function The automatic diagnostic reset 1 Non latching diagnostics automatically reset when the input is present and valid 92 function clears the special diagnostic and attempts to restore the controller to normal operation The controller resumes normal operation until another diagnostic occurs Note The automatic diagnostic reset function does not operate during the manual output test sequence If a special diagnostic occurs within 24 hours after an automatic diagnostic reset the controller must be manually reset Other possible methods of resetting diagnostics are described in the sections that follow Manual Output Test Tracer ZN520 To verify proper end device operation press the controller s Test button This exercise will verify all outputs in a predefined sequence the first of which will attempt to reset the controller diagnostics if any are present Cycling Power to the Controller Tracer ZN520 After removing and reapplying the 24 Vac power from the board the unit cycles through a power up sequence By default the controller attempts to reset all diagnostics present at power up Diagnostics present at power up an
217. to indicate a missing motorla If on this indicates that the fan is performing correctly and will be used to report fan status correctly depending on FPru mode EhEn YES no Indicates that the temperature sensing circuit has calculated a logical on based on the settings of the following parameters Aid Aib APU a Motor 1 is the only motor in unit sizes 075 and 100 unit sizes 1250 and 1500 contain two motors UV SVNO3F EN 51 S TRANE ECM Overview and Setup Configuration parameter and value display and modification changes The ECM engine board s on board user interface is easy to use and supports 1 Verification auditing of on board parameter settings read only 2 Adjustment of the on board settings write Figure 50 User interface input buttons MENU BA J The user interface has three input buttons from left to right 1 Menu Set 2 Decrement 3 Increment Each button has several different actuation levels depending on length of press and what the UI is currently displaying 52 Table 11 Button actuation levels Menu Set Button Duration Action Short Press in lt 1 sec None Status Display Short Press in Toggles between parameter Configuration name and value without saving Display abandons value if changed Long Press Hold gt 3 sec Enters the configuration menu in Status Display Long Press Hold gt 3 sec If on a parameter
218. to meet the unit capacity requirements Several diagnostics affect valve operation For detailed information about these diagnostics refer to Table 34 p 95 The controller must be properly configured based on the actual installed end devices and application If the unit configuration does not match the actual end device the valves may not work correctly The controller includes entering water temperature sampling logic which is automatically initiated during 2 pipe and 4 pipe changeover if the entering water temperature is either too cool or too hot for the desired heating or cooling Ensure the valves are correctly configured using the Tracer TU service tool as normally open NO or normally closed NC as dictated by the application When the fan is OFF with no demand for capacity 0 and the outdoor air temperature is below the freeze avoidance setpoint the controller opens the water valves 100 to prevent coil freezing This includes unoccupied mode when there is no call for capacity or any other time the fan is OFF Table 48 DX or electric heat does not energize UC400 Probable Cause Unit wiring Failed end device No power to the controller Diagnostic present Normal operation Unit configuration Requested mode off Freeze avoidance Table 49 Probable Cause Unit wiring Failed end device No power to the controller Diagnostic present Normal operation Unit configu
219. tput is controlled based on the heating capacity At 0 percent capacity the heating output is off continuously Between 0 percent and 100 percent capacity the heating output is controlled according to modulating valve logic modulating valves or cycled on two position valves As the load increases modulating outputs open further and binary outputs are energized UV SVNO3F EN longer At 100 percent capacity the heating valve is fully open modulating valves or on continuously two position valves The Tracer ZN520 fan output s normally run continuously during the occupied and occupied standby modes but cycle between high and off speeds with heating cooling during the unoccupied mode When in the occupied mode or occupied standby mode and the fan speed is set at the high medium or low position the fan runs continuously at the selected speed Refer to Diagnostics p 90 for more information on abnormal fan operation When the unit s supply fan is set to auto the controller s configuration determines the fan speed when in the occupied mode or occupied standby mode The fan runs continuously at the configured heating fan speed or cooling fan speed For all fan speed selections except off the fan cycles off during unoccupied mode The economizer outdoor air damper is never used as a source of heating Instead the economizer damper when present is only used for ventilation therefore the damper is at the occupied minimu
220. trained in handling live electrical components per these tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury Problem Heating Cooling Cause Correction Room too warm X Main power off Check fuses outside air temperature is X Room sensor is not properly set Reset room sensor temperature below 35 F X Room sensor is providing a false reading due Startthe warm up cycle earlier in the morning to walls being cold from the night to provide appropriate time frame to increase temperature setting room temperature prior to space occupation X Sensor is mounted on a block wall that is Relocate sensor leaking cold air into the room through the mounting holes X Face and bypass damper or coil valve is Replace malfunctioning component or malfunctioning contact the control s contractor or if Trane controls see CNT SVX04A EN for more information concerning Tracer controls Room too warm X Room sensor is not properly set Reset room sensor temperature outside air temperature is above 35 F X Face and bypass damper or coil control valve Replace malfunctioning component or is malfunctioning contact the control s contractor or if Trane controls see CNT SVX04A EN for more information concerning Tracer controls X OA damper is in the closed position Ensure OA damper is in the open position X Clogged filter Replace filter
221. trically via a single plug that contains both the operating voltage and the control signals that are needed for correct operation e The BLDC motor comes in a double shaft configuration for all vertical unit ventilator sizes 075 100 125 150 Note Sizes 125 and 150 have two motors installed e The BLDC motor has two voltage variations 115 208 230V and 277V Units with three phase and neutral have motors wired to the LN as opposed to LL The 115 208 230V is configured for voltage by use of an external jumper If the jumper is present the motor will be configured for use with 115V The jumper must NOT be present for use with 208 230V ECM Engine Controller Figure 43 ECM engine controller Note Display and Menu Enter Increase and Decrease Buttons e TheECM engine controls and reports the performance of up to two Trane BLDC motors e The engine also co ordinates the operation of the fan in response to electric heat behavior and electric heat behavior in response to hydronic heat behavior and fan behavior e The engine incorporates a user interface that allows adjustment of certain unit parameters and provides constant feedback on motor operation e The engine integrates service and troubleshooting tools including high precision tachometers fan status and electric heat enable indicators 45 S TRANE ECM Overview and Setup e The engine integrates a versatile configurable CSTI Adapter Boa
222. trips and 24 Vac power tap to field supplied controller thermostat e Adjustment and calibration of the variable speed inputs VSP 0 10V on the system e Adjustment calibration or disabling of the optional auto changeover function on CSTI units Otherwise proceed with the mechanical electrical and controls installations as defined in other sections of this manual Proceed with the power on after installation as defined in the other sections of this manual Wall Mounted Low Voltage Fan Speed Switch Customer Supplied Controller Thermostat Instructions AWARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury AWARNING Safety Alert You MUST follow all recommendations below Failure to do so could result in death or serious injury e Hook ups to the adapter boards should be made only with the power off to the unit Only connect Class 2
223. troller Installation Operation and Programming Guide for specific instructions regarding the procedure for running the Tracer ZN520 Cooling Operation Tracer ZN520 The heating and cooling setpoint high and low limits are always applied to the occupied and occupied standby setpoints During the cooling mode the Tracer ZN520 controller attempts to maintain the space temperature at the active cooling setpoint Based on the controller s occupancy mode the active cooling setpoint is one of the following e Occupied cooling setpoint e Occupied standby cooling setpoint e Unoccupied cooling setpoint The controller uses the measured space temperature the active cooling setpoint and discharge air temperature along with the control algorithm to determine the requested cooling capacity of the unit 0 percent 100 percent The outputs are controlled based on the unit configuration and the required cooling capacity To maintain space temperature control the Tracer ZN520 cooling outputs modulating hydronic valve two position hydronic valve or outdoor air economizer damper are controlled based on the cooling capacity output The cooling output is controlled based on the cooling capacity At 0 percent capacity all cooling capacities are off and the damper is at minimum position Between 0 percent and 100 percent capacity the cooling outputs are controlled according to modulating valve logic modulating valves or cycled on 2 position
224. two batteries Association is automatically initiated between the sensor and the receiver When LED3 on the receiver stops blinking association has been established If the first association attempt is unsuccessful the sensor automatically re attempts association with the receiver every 10 minutes Note An associated sensor that has lost communication with the receiver will transmit an association request every 50 minutes You can manually initiate association see Manual Association Wireless Controls p 99 Testing Signal Strength and Battery Status To verify that the association process was successful and that the batteries have adequate charge 1 Firmly press and release the Test button on the bottom of the sensor as illustrated below 2 For model WZS view LED1 LED2 and LED3 to determine the signal strength View LED5 to determine the battery status see the following figure for model WZS sensors Note The LEDs will turn Off after 5 seconds to conserve battery strength For model WDS determine the signal strength and battery status by viewing the symbols on the sensor display see the following figure for model WDS sensors 3 Record the results in your commissioning statement Note For more information see Tes
225. uding interference that may cause undesired operation Warning Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment 20 cm separation distance To comply with FCC s RF exposure limits for general population uncontrolled exposure the antenna s used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co located or operating in conjunction with any other antenna or transmitter Canada compliance all models CSA22 2 No 205 M1983 Signal Equipment Industry Canada Certification no IC 6178A 13651127 Industry Canada statement the term IC before the certification registration number signifies only that the Industry Canada technical specifications were met Section 14 of RSS 210 The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits for the general population IEEE compliance for radio frequency range all models UV SVNO3F EN IEEE 802 15 4 2003 IEEE Standard for Information Technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 15 4 Wireless Medium Access Control MAC and Physical Layer PHY Specifications for Low Rate Wireless Personal Area Networks LR WPANs
226. uld be taken to stay clear of hazardous voltages moving parts and electric heat elements while making adjustments to the ECM engine board If it is not practical to stay clear of these areas during adjustment of the ECM engine board please contact Trane Global Parts for configuration kit that allows easy powering of the engine board outside of the unit with a 9V battery Configuration adjustments to the ECM engine board should be made through the SMALLER of the two low voltage lids on the front of the control panel through the low voltage insulation shielding ACAUTION Burn Hazard On electric heat units certain parameter values are locked out to prevent overheating of the unit These functions will appear to be saved however they will not be accepted if the Electric Heat Protection setting is On Do not change the Electric Heat Protection setting to Off and make changes to the protected settings unless you are programming an unconfigured service replacement board to match the unit settings on a ECM configuration label Failure to follow this instruction could result in the unit overheating and becoming hot to the touch which could result in minor or moderate injury and or equipment damage Note The engine board functions and unit specific settings are summarized on the ECM engine configuration label affixed to the back side of the control panel low voltage lid on every unit 49 S TRANE ECM Overview and
227. um Fan Speed Response Verification p 64 Softsetting the IMC Address of an ECM Engine Module When a blower coil fan coil or unit ventilator application requires an ECM engine module the Tracer UC400 requires that the ECM engine module be configured at IMC address 99 If an engine module is found at an address other than 99 as it will be in a field application hardware replacement scenario Tracer TU populates the Expansion Module box on the Controller Status screen as shown here 109 S TRANE Replacing ECM Components 3 Once the light has been activated click OK on the Figure 70 Softset Rotary Address Expansion Module dialog box a es gt shown in Step 2 rene Ae ee om When you click OK Tracer TU softsets the engine pies al e module IMC address to 99 and the light on the module D eigenen jammer will turn off ou 4 Return to the Expansion Module Status box click Discover and wait five to ten seconds for Tracer TU to refresh the screen Once complete the value in the Error column updates Dii my A nal al Pa earn es iale Piae Tie anida face A id gms einer en to None and the Status column updates to Comm Up Figure 73 Notice one ECM type is configured at address 99 but no es o ECM is found at that address Also notice that another ECM has been found with an address of 0 When this ie m ss situation occurs Tracer TU displays a Softset button you can use to config
228. unit operation of the fan valves and damper b Table 20 shows the controller s response to low temperature detection condensate overflow and fan status diagnostics c The generic binary input does not affect unit operation A building au tomation system reads this input as a generic binary input d If the fan mode input is in the off position or the controller is in the un occupied mode with the fan off the fan status input will be open A di agnostic will not be generated when the controller commands the fan off A diagnostic will only be generated if the fan status input does not close after one minute from energizing a fan output or any time the input is open for one minute The controller waits up to one minute after en ergizing a fan output to allow the differential pressure to build up across the fan 78 Binary Outputs Tracer ZN520 Binary outputs are configured to support the following e Three fan stages when one or two fan stages are present medium fan speed can be configured as exhaust fan e One hydronic cooling stage e Onehydronic heating stage dehumidification requires this to be in the reheat position e One DX cooling stage e One or two stage electric heat dehumidification requires this to be in the reheat position e Face and bypass damper e Modulating outdoor air damper e One baseboard heat stage For more information see Table 20 Table 20 Binary output configuration Tracer ZN520
229. upied Open to occupied Closed temperature minimum standby minimum present and economizing not possible Refer to section Economizing Free Cooling UC400 p 84 position position Economizing Free Cooling UC400 Cooling with outdoor air during the times when the temperature is low enough to allow is referred to as economizing free cooling The UC400 controller and applications with modulating outside air damper support UV SVNO3F EN economizing The modulating outdoor air damper provides the first source of cooling for the controller The controller initiates economizing if the outdoor air temperature is below the economizer enable point configurable using the Tracer TU service tool If economizing is initiated the controller modulates the outdoor air damper between the active minimum damper position and 100 percent to control the amount of outdoor air cooling capacity When the outdoor air temperature rises 5 F 2 8 C above the economizer enable point the controller disables economizing and moves the outdoor air damper back to its predetermined minimum position based on the current occupancy mode or communicated minimum outdoor air damper position If an outdoor air temperature value is not present economizing is disabled Two position Control Of A Modulating Outdoor Air Damper UC400 The UC400 controller supports two position outdoor air damper actuators However a modulating outdoor return
230. ure safe operation the electric heat if present will be disabled e faerror occurs while the configuration menu is in effect all unsaved values will be discarded and the error codes will be displayed 53 S TRANE ECM Overview and Setup Error Codes Displayed during abnormal operation 54 mtr LOCH uerg LOCH uer USPd ntre USPd rAbiP g d e00 c00 0000 u Iced Indicates a locked rotor condition of Motor 1 The motor will be locked out until the cause has been resolved and the power cycled refer to refer to Troubleshooting ECM p 105 for resolution details Motor 2 will continue to operate but will not be monitored Fan Status function if being used will report an inoperative motor Electric heat and changeover heat will be shut down Indicates a locked rotor condition of Motor 2 The motor will be locked out until the cause has been resolved and the power cycled refer to Troubleshooting ECM p 105 for resolution details Motor 1 will continue to operate but will not be monitored Fan Status function if being used will report an inoperative motor Electric heat and changeover heat will be shut down Indicates that Motor 1 has experienced a run away or over speed condition and has been shutdown The unit will offer limited limp in performance and Motor 2 will continue to operate but will not be monitored Fan Status function if being used will report
231. ure the engine module address Complete the following steps to softset the engine module address 1 Click the Softset button to initiate the softest procedure Tracer TU displays the Softset Rotary Address Expansion Module dialog box Figure 71 ex ey eo ee Softset Rotary Address Press the button on the ECM engine module to activate it and click OK 2 Prior to clicking OK activate the engine module using the button on the ECM engine board in the control box Once the engine module is activated the LED to the right of the button lights up Figure 72 110 UV SVNO3F EN TRANE Trane optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments Trane offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www Trane com Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice am Ingersoll Rand 2013 Trane All rights reserved UV SVNO3F EN 24 Jan 2013 We are committed to using environmentally Supersedes UV SVNO3E EN 22 Feb 2011 conscious print practices that reduce waste
232. urned to the status loop repeat Example 1 to arrive back at this example s starting point MENU ip o Example 3 We wish to double check to see if the value of 820 rom has been saved Note lf the display has timed out and returned to the status loop repeat Example 1 and Example 2 to arrive back at this example s starting point MENU sary p Example 4 We wish to change the value of a protected value on an electric heat unit MENU ETJ p UV SVNO3F EN S TRANE ECM Overview and Setup gt MENU S hob It would appear that the value has been changed but if we check the value we notice that the original value has been retained Priority Error Display Under special conditions the status display will interrupt briefly to prioritize display of events Notes e During error displays the user interface will be disabled until the error is removed or resolved e If changes are made to parameters and saved most settings take effect immediately Any change to fan speeds will take effect and cause the configuration menu to exit immediately to begin tracking speeds via the on board tachometer e Where practical the unit will offer limp in performance but to ensure safe operation certain unit functions will be disabled For example if one motor fails the unit will display an error code but the second motor if present will continue to operate However to ens
233. ut which could result in minor to moderate burns NOTICE Structural Damage If the valve is leaking drain system OR isolate valve from the system DO NOT remove valve body from plumbing If the system contains water structural damage could result 1 If the valve is leaking drain system OR isolate valve from the system DO NOT remove valve body from plumbing 2 Ensure the cartridge needs to be replaced If so follow appropriate steps explained for cartridge assembly removal 3 Ifthe motor or other internal parts of the actuator is damaged replace the entire actuator assembly Note These hydronic valves are designed and tested for silent operation However water noise may occur as aresult of high water velocity Piping noises may also occur in high temperature over 212 F systems with insufficient water pressure Note Do not use petroleum based or mineral oil type boiler additives Compounds with a 50 percent water dilution that can be used are diethylene glycol etheylene glycol and propylene glycol Coil Cleaning Periodically the hydronic coils should be cleaned from dirt accumulation that could reduce the unit performance To clean the equipment coll 1 Remove the unit s front panel 2 Remove the unit s front nosing UV SVNO3F EN S TRANE Maintenance 3 Removed the coil s solid steel front cover 4 Vacuum the dust particles from the coil face 5 Reverse order for re installation Pr
234. uto position 3 Rotate the setpoint dial on the zone sensor module to 55 F for cooling or 85 F for heating The appropriate control valve will actuate assuming the following conditions 1 Room temperature should be greater than 55 F and less than 85 F 2 Fora2 pipe fan coil unit with an automatic changeover sensor the water temperature input is appropriate for the demand placed on the unit For example cooling 72 operation is requested and cold water 5 lower than room temperature flows into the unit 3 Select the correct temperature setpoint Note Select and enable zone sensor temperature settings to prevent freeze damage to unit General Information Manual Fan Speed Switch The manual fan mode switch is available with a four position switch off hi med lo allows manual fan mode selection and is available unit or wall mounted See Figure 59 Figure 59 Fan speed switch FAN CONTROL z5 Hi MED OFF Me o mj E The fan speed switch can be used to provide simultaneous fan speed customer requests in addition to external controller fan speed request The wall mounted option is low voltage and has three 24 volt relays using a factory wired transformer and relays to control the fan motor Fan Mode Switch Operation Off Fan is turned off two position damper option spring returns closed Hi Med Lo Fan runs continuously at the selected speed The two position damper option opens to an a
235. valve body To install the actuator to the valve body 3 Align the slot on the shaft of the valve with the valve body notch on side of body see Figure 22 p 28 Figure 21 Removing valve actuator LIFT ACTUATOR fi J DE 5 WON ee 27 S TRANE Installation Piping Figure 22 Installing isolation valve ENSURE SHAFT SLOT POINTS TOWARDS NOTCH GH SIDE OF BOO FOR FITTING INTO ENGAGING SHAFT 4 Install body valve into pipe AWARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring Improperly installed and grounded field wiring poses FIRE amp ELECTROCUTION hazards To avoid these hazards you MUST follow requirements for field wiring installation and grounding as described in NEC and your local state electrical codes All field wiring MUST be performed by qualified personnel Failure to follow these requirements could result in death or serious injury 5 Wiring connections may be made either before or after actuator installed on body 6 Placethe manual operating lever on the actuator in the OPEN position 7 Align actuator coupling to slot on the shaft of the valve body and fit the head onto the valve body to ensure the shaft seats correctly see Figure 20 p 27 8 Press the actuator and valve body until it secures together Soldering Procedures 1 Remove actuator as stated earlier 2 Place valves on the pipe Rotate valve stem so the shaft sl
236. valves As the load increases modulating outputs open further and binary outputs are energized longer At 100 percent capacity the cooling valve or damper is fully open modulating valves or on continuously and 2 position valves Unit diagnostics can affect fan operation causing occupied and occupied standby fan operation to be defined as abnormal Refer to Troubleshooting Wireless Controls p 96 for more information about abnormal fan operation The Tracer ZN520 controller operates the supply fan continuously when the controller is in the occupied and occupied standby modes for either heating or cooling UV SVNO3F EN The controller only cycles the fan off with heating and cooling capacity in the unoccupied mode The economizer is used for cooling purposes whenever the outdoor temperature is below the economizer enable setpoint and there is a need for cooling The economizer is used first to meet the space demand and other forms of cooling are used if the economizer cannot meet the demand alone See modulating outdoor air damper operation for additional information Cascade cooling control initiates a discharge air tempering function if the discharge air temperature falls below the discharge air temperature control low limit all cooling Capacity is at minimum and the discharge control loop determines a need to raise the discharge air temperature The controller then provides heating capacity to raise the discharge ai
237. ves depending on the application refer Table 23 p 84 The controller opens and closes the appropriate valve s to maintain the active zone temperature setpoint at the heating setpoint in heating mode or the cooling setpoint in cooling mode refer to Cascade Zone Control p 81 83 Modulating Valve Operation UC400 The UC400 controller supports tri state modulating valve control Two binary outputs control each valve one to drive the valve open and one to drive the valve closed The stroke time for each valve is configurable using the Tracer TU service tool The controller supports the following e Heating e Cooling e Heat cool changeover with a single valve and coil for 2 pipe applications e Cooling or heat cool changeover with the main valve and coil e Only heating with the auxiliary valve and coil for 4 pipe applications The controller moves the modulating valve to the desired positions based on heating or cooling requirements Modulating Valve Calibration UC400 Modulating valve calibration is automatic During normal controller operation the UC400 overdrives the actuator 135 percent of the stroke time whenever there is a request for a position of 0 percent or 100 percent At either power up after a power outage or when the occupancy status changes to unoccupied the controller first drives all modulating valves and dampers to the closed position The controller calibrates to the fully CLOSED posit
238. voltages to the terminal blocks on the adapter boards that share a common with the unit mounted low voltage transformer Secure low voltage connections firmly to terminal strips and strain relieve all low voltage connection to prevent accidental detachment and possible short circuiting of high voltage components Care should be taken to avoid contact of low voltage wiring to the back side of the adapter boards which contain high voltage 48 Note Specifications subject to change without notice Consult the unit submittals and unit schematics before determining hookup requirements to the fan coil unit Terminal block positions polarities and assignments are determined for specific unit configurations only Signal assignments are indicated for reference only Both adapter boards come equipped with integrated terminal blocks to hook up to the field supplied mounted Fan Speed Switches and external controls Connections should be made to the screw terminals with wires between 16 AWG and 24 AWG with a 4 5 mm wire strip length The terminal blocks have 5 mm spacing and are equipped with 3 mm screws The field supplied wires should have an insulation rating of 600V Standard Adapter Board Field Connections Figure 46 Standard adapter board field connections e 29 a E 2 1 VSP 10V 1 24 Vac Y gnd 2 VSP 0 10V 2 24 Vac B com 3 VSP DC COM 3 High 4 Medium 5 Low All customer connections to the two adapter boa
239. water temperature sampling function Two pipe changeover and 4 pipe changeover applications allow the main coil to be used for heating and for cooling therefore these applications require an entering water temperature sensor When three way valves are ordered with a Tracer ZN520 control the controller is factory configured to disable the entering water temperature sampling function and the entering water sensor is mounted in the proper location Disabling entering water temperature sampling eliminates unnecessary water flow through the main coil when three way valves are used The controller invokes entering water temperature sampling only when the measured entering water temperature is too cool to heat or too warm to cool Entering water is cold enough to cool when it is five degrees below the measured space temperature Entering water is warm enough to heat when it is five degrees above the measured space temperature When the controller invokes the entering water temperature sampling function the unit opens the main hydronic valve for no more than three minutes before considering the measured entering water temperature An initial stabilization period is allowed to flush the coil This period is equal to 30 seconds plus half of the valve stroke UV SVNO3F EN time Once this temperature stabilization period has expired the controller compares the entering water temperature against the effective space temperature either hard wired
240. wer consumption lt 1 VA Housing Polycarbonate ABS blend UV protected UL 94 5VA flammability rating suitable for application in a plenum Mounting 3 24 in 8 26 cm for 2 mounting screws supplied Sensor battery 2 AA 1 5 V 2800 mAh lithium 5 year life UL listed Rangel Open range 2 500 ft 762 m packet error rate 2 Usable 200 ft 61 m Typical 75 ft 23 m Output power 100 mW Radio frequency 2 4 GHz IEEE Std 802 15 4 2003 compliant 2405 to 2480 MHz 5 MHz spacing Radio channels 16 Address range 000 to 999 Minimum time between 30 seconds transmissions Maximum time between 15 minutes transmissions a Range values are estimated transmission distances for satisfactory op eration Actual distance is job specific and must be determined during site evaluation 40 UV SVNO3F EN S TRANE Installation Sensors The following table presents agency compliance information for wireless sensor set models as shown United States compliance all models UL listed UL 94 5VA Flammability rating UL 916 Energy management equipment FCC CFR47 Section 15 247 amp Subpart E Digital Modulation Transmission with no SAR FCC Identification TFP 13651127 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received incl
241. witches set to the same address Important Set the addresses before applying power to the receiver and before removing the insulation strip Figure 39 from the sensor To set the receiver and sensor addresses 1 Using asmall screwdriver set the three rotary address switches locations S1 S2 S3 on the receiver to an address between 001 and 999 see Figure 39 You do UV SVNO3F EN not have to remove the covers to access the rotary address switches Note Do not use 000 as an address An address of 000 returns the receiver outputs to their factory defaults zone temperature and setpoint outputs 72 5 F removes all association knowledge and prevents association with a sensor Figure 39 Setting the rotary address switches on the receiver and the sensor ee ae Q q La ae SHH ah tantiim A i gt cr QD LI H nl K wi D P LED 23 29 2 zins r NZ bes allo a o fi By Gef o lo amp 2812 hai Nee senma S1 S2 my ADDRESS co POWER Mice HEATING SET s5 FAN SYSTEM SETPOINT 9035 S5 ZONE em GND TT R77 24VAC DC A GND COMM COMM Receiver Do not remove the insulation strip yet BATTERY STATUS Sensor 2 Setthe three rotary address switches locations S1 S2 S3 on the sensor to the same address as the receiver see Figure 39 UV SVNO3F EN S TRA
242. y 2 10 Volt Isolation Valve 2 Way Isolation Valve 3 Way Digit 22 CV Preheat or Reheat Heating Coil NO oO1BRWNO Hou ou Wo ou ue al 0 None L Low Cv M Medium Cv H High Cv Digit 23 Discharge Arrangement O0 Opening Only No Grille A Discharge Grille B Double Deflection Discharge Grille C Grille Discharge with Wire Mesh Digit 24 Outside Air Damper Control 0 None A 3 Wire Actuator B 2 10 Volt Actuator Digit 25 Face and Bypass Damper Control 0 None A 3 Wire Actuator B 2 10 Volt Actuator Digit 26 Controls 0O None Unit Mounted Speed Switch 2 Customer Supplied Terminal Interface CSTI CSTI w Low Temp Detection Tracer ZN520 Tracer ZN520 w Time Clock Tracer ZN520 w Fan Status Tracer UC400 Tracer UC400 w Time Clock Digit 27 Unit or Wall Mounted Controls None Unit Mounted Wall Mounted Unit Nounted Fan Speed Switch amp Wall Mounted Temperature Sensor 4 Wireless Zone Sensor CON amp o1 B W WMO Note Thewall mounted room sensor is ordered as separate line item in Job Configurator Digit 28 Internal or External Set Point 0 None 1 Internal 2 External 3 Digital Display Digit 29 Timed Override 0 No 1 Yes Digit 30 Exhaust Control A No Exhaust Control with 3 Speed Supply Fan B Exhaust Control with 2 Speed Supply Fan C No Exhaust Control with 1 Speed Supply Fan DX EH Un
243. y input to switch between the occupied and occupied standby modes During occupied standby mode the controller s economizer damper position goes to the economizer standby minimum position The economizer standby minimum position can be changed using Rover service tool In the occupied standby mode the controller uses the occupied standby cooling and heating setpoints Because the occupied standby setpoints typically cover a wider range than the occupied setpoints the Tracer ZN520 controller reduces the demand for heating and cooling the space Also the outdoor air economizer damper uses the economizer standby minimum position to reduce the heating and cooling demands When no occupancy request is communicated the occupancy binary input switches the controller s operating mode between occupied and unoccupied When no communicated occupancy request exists the unit cannot switch to occupied standby mode Occupied Bypass Mode Tracer ZN520 The controller can be placed in occupied bypass mode by either communicating an occupancy request of Bypass to the controller or by using the timed override On button on the Trane zone sensor When the controller is in unoccupied mode you can press the On button on the zone sensor to place the controller into occupied bypass mode for the duration of the bypass time typically 120 minutes Occupancy Sources Tracer ZN520 There are four ways to control the controller s occupancy e C

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