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Trane Direct-Fired Indoor and Outdoor Make

1. 32 FAULT GODE 4s eine acr e vli RI Unit off Fan on33 FAUET CODE uii MEER ERETEMPSYMEEADSCRBRISO Unit on Fan off34 FAULT CODE v3 icu 45 45 Ase SESS Check Airflow Switches35 FAULT CODE na ines sede nae Clogged Filter Switch36 FAUET CODE iA centre Age rece Energy Save Mode 137 FAULT CODE BE AGI EG Energy Save Mode 238 EAUET CODE tice ce E onem eal n et NR Energy Save Mode 339 FAULT CODE ek Insufficient OA40 Menu Selection 43 Menu Selection Tree for BACview 43 UNIT MODES HOTKEY F2 inan a aaa aa ke A an 43 SET POINTS HOTKEY 3 scs RR ew ea Rb ate a 44 STATUS MENU Lis eae REESE eb ete HOTKEY 445 5 e TRANE Contents ALARM Thermostat Output Curve 10 K Ohms Thermistor Output Curve Airflow Station Layout Zone 583 Controller Specifications Typical Wiring Schematic RESETS HOTKEY 6 SCHEDULES HOTKEY 7 USER CONFIGURABLE OUTPUT HOTKEY 8 CLOCKSET HELP HOTKEY 5 FUEL SELECT HOTKEY 9 MUA SVPOIA EN TRANE MDT Controls MUA SVPOIA EN Direct Fired Indoor and Outdoor Units Unit Operating Modes There are three different modes that control the supply fan and unit operation Off Manual e Auto There are also four different methods for controlling the operating modes e aremote panel wit
2. URGE ARLE ENS NE 12 Ventilation Modea a miaa tex e a SA es a 14 Coolirig Mode Sure RE EG ee RAE 15 Damper Control Modes 16 Manual Mode 2 Maan D DR HEA en Ee SR RA ES eRe DO a AO onus 16 PUNGCHONS e od titan bth Ul hice Santee au ec nents RUP Ae weet tls stes 19 100 Outside AIF eee rs 19 Minimum Ventilation 0 0 0 cece tent rn 19 Freezestat eb Ue alee tod st eth A hha 19 Clogged Filter bk shed Se eR ee Ree Pee eee 19 User Configured PID 20 DIRECT ACTING 23 bs so 2 ia eA are RR EG Sa Pee 20 REVERSE AGTING s Rande kd e RR Bd MD REA leas Se 22 Unit Resets i cx VECES TRE RO RE ENDE RA Lattin erus 24 Multiplexed Inputs ick REED eee ee Ped 24 Glock SEB ict enti er ede et edu EE Gaeta ee eg 25 Diagnosis aye ex RIEN 26 Critical Fault Codes lisse rn 26 FAULT CODES hese ee eee Rea eS Low Discharge Temperature26 FAUELCODEiz eissentsERt ERERBMERESEREBREREMERPBIS Safety Circuit Open29 FAULT CODE 26 Sate ea nes Mod Sewn eee Rees Burner Status30 FAULT CODE Burner 31 FAULLCODE e mi M ixi tee eed hee Flame Failure32 Diagnostics Non Critical Fault
3. No There is a short in the controller input Replace the controller Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is shorted replace the sensor At 70 F the resistance should be 10K See thermistor output curve for other temperatures If it is not shorted there is a short in the wiring between the sensor and the input plug Determine cause and rectify Refer to Appendix II for a typical 10K thermistor output curve 2 Is the outside air sensor in the direct sunlight Yes Provide shade for the sensor so the direct sun does not affect it No Contact factory SOLUTION If setpoints are misadjusted 15 the Econmzr Setpoint set for 80 F Yes The outside air temperature is over 80 F and there should be no need for heat If this is not the case contact factory No Increase the ECONMZAR SP setpoint See Heating Mode Energy Savings Mode 3 section of this manual for more information FAULT CODE Insufficient OA 40 PROBLEM The controller has turned off the burner enable output because the percentage of outside air has dropped below 2096 for more than five minutes and the unit is in the Heating mode SOLUTION If heat is desired Are the outside air hood filters or bird screen or any associated outside air ductwork obstructed Yes Clear obstruction or change filters No Continue 2 Arethe outside air and return air dampers and actuators working properly
4. thermistor e nputs7 amp 8 1k 10k pot 5 Digital Outputs Relay contacts rated at 1A Resistive 24VAC MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 51 e TRANE 52 I O Zone 583 Controller Specifications LED indication 3Analog Outputs 0 10VDC OUTPUT ASSIGNMENTS ANALOG AO1 Burner firing rate to signal conditioner 0 10 VDC AO2 RA or Mixing Damper Control User Configured 0 10VDC AO3 Unassigned OUTPUT ASSIGNMENTS DIGITAL DO1 Unit Enable DO2 Burner Enable DO3 Cooling Enable DO4 Alarm DO5 Pilotto Main Flame Sensor Changeover Switch INPUT ASSIGNMENTS UNIVERSAL IN1 Pressure Transducer for Building Pressure Control or User Configured IN2 Pressure Transducer for Flow Station IN3 Multiplexed e 100 Outside 100 Output e Flame Failure Alarm e Safety Circuit Status e Manual Mixed Air Dmpr Control IN4 Multiplexed e Auxiliary Unit Enable Clogged Filter e Fan Status Burner Status IN5 Outside Air sensor IN6 Discharge Air sensor IN7 Unit Enable Remote Setpoint IN8 Damper Control RNET MRT Pro or Room Air sensor Direct Fired Indoor and Outdoor Units MUA SVPO1A EN TRANE Typical Wiring Schematic Figure8 Non recirculating with evap DFOA and DFIA model diagram WW 81 COMPONENT IDENTIFICATION CONTROL CIRCUIT TRANSFORMER BREAKER HIGH TEMPERATURE LIMIT SWITCH SUPPLY AIR FIRESTAT OPTIONAL RETURN AIR FIRESTAT OPTIONAL CONTR
5. Alarm Resets Schedules Alam History 64 Most Recent e Active Critical Alarms e Active Non Critical Alarms e Alarms Return To Normal Previous Alarm Burner Reset Fan Count Cooling Reset Calibrate MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 45 e TRANE Menu Selection Home Schedules Clock Set Help SCHEDULES HOTKEY 7 Daily Sc Holiday hedule1 typical 1 through 4 Use yes no Start Time hr min Stop Time hr min DAYS SUN MON TUE WED THU FRI SAT Previous Next Home Logout Holiday1 typical 1 through 12 Override Use yes no Start Time hr min Stop Time hr min Month 1 12 Day 1 31 Previous Next Home Logout Overridel typical 1 through 2 Use yes no Start Time hr min Stop Time hr min Month 1 12 Day 1 31 Previous Next Home Logout USER CONFIGURABLE OUTPUT HOTKEY 8 PID Select Direct Acting Reverse Acting High Input Value 46 Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Menu Selection Low Output Value User Control Setpoint Maximum User Setpoint Minimum User Setpoint Previous Home Setpoints Help CLOCKSET HOTKEY 0 Time hh mm ss Date dd mm yy Previous DST Enable No Yes Sou Hem No Yes 06 Apr 02 O6End Oct 29 07Beg Apr 01 07 Oct 28 O8Beg Apr 06 O8End Oct 26 09 Apr 05 O9End Oct 25 HELP HOTKEY 5 Fan
6. Typical Wiring Schematic Figure 10 Recirculating DFOA and DFIA model diagrams COMPONENT IDENTIFICATION CONTROL CIRCUIT TRANSFORMER BREAKER HIGH TEMPERATURE LIMIT SWITCH SUPPLY AIR FIRESTAT OPTIONAL RETURN AIR FIRESTAT OPTIONAL CONTROL CIRCUIT FUSE EVAP PUMP MOTOR FUSE COMBINATION CO amp NO2 DETECTOR OPTIONAL KEYPAD DISPLAY MODULE OPTIONAL BURNER ON LIGHT REMOTE FAN ON LIGHT REM or COOLING ON LIGHT RI OTE CLOGGED FILTER LIGHT REMOTE MP 05 DAMPER CONTROL POTENTIOMETER OPTIONAL MP 15 UNIT ENABLE POTENTIOMETER MAIN SUPPLY FAN MOTOR DISCHARGE DAMPER MOTOR OPTIONAL INLET DAMPER MOTOR OPTIONAL d MIXING BOX DAMPER MOTOR OPTIONAL EVAP PUMP MOTOR MAIN FAN MOTOR OVERLOAD LOW GAS PRESSURE SWITCH OPTIONAL HIGH GAS PRESSURE SWITCH OPTIONAL HIGH VELOCITY LOW VELOCITY SWITCH CLOGGED FILTER SWITCH OPTIONAL BUILDING PRESSURE TRANSDUCER OPTIONAL FLOW STATION PRESSURE TRANSDUCER OPTIONAL FLAME SAFEGUARD RELAY FLAME FAILURE RELAY CLOGGED FILTER RELAY noA HOLDING RELAY OPTION 7 DAY TIME CLOCK OPTIONAL ELECTRONIC RELAY BURNER STATUS RELAY BURNER ENABLE RELAY COOLING ENABLE RELAY COOLING INTERLOCK RELAY SAFTEY CIRCUIT STATUS RELAY UNIT ENABLE RELAY FAN STATUS RELAY FLAME SUPERVISION SWITCHING RELAY INTERLOCKING RELAY OPTIONAL LOW ALERT RELAY OPTIONAL HIGH ALERT RELAY OPTIONAL ALARM STATUS RELAY RESISTOR 1K OHM RESISTOR 2K OHM RESISTOR 4 02K
7. Yes Continue No Make necessary adjustments and force the unit to recalibrate See Calibrate in the Resets Section of this manual 3 Arethe flow measuring station pitot tubes and pressure tubing clear Yes Continue No Clean and force the unit to recalibrate See Calibrate in the Resets Section of this manual Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics 4 Do the dampers track with a change in the OA setpoint The dampers utilized on the unitare not linear with respectto airflow and openness and as such the proportion of outside air damper movement will not be exactly equal to the setpoint However at 2096 OA the dampers should be approximately 12 open Yes Continue No Check the damper motor and linkage connections When 24VAC is powering the damper actuator and the control signal is OVDC the outside air damper should be close to a rattle tight position and the return air damper should be open If the 24VAC power is removed the actuator will draw the outside air damper tightly closed and the return air damper tightly open When 24VAC is powering the damper actuator and the control signal is 10VDC the outside air damper should be fully open and the return air damper should be closed 5 15 there approximately 24VAC at the COM and EXC terminals on the airflow station pressure transducer Yes Continue No Is there 120VAC on the primary side of the low volta
8. RUN TUBE CONNECTIONS HEATER TO TRANSDUCER PT 15 IN CASING UNIT CONTROL ENCLOSURE HIGH PRESSURE TUBE CONNECTION LOW PRESSURE TUBE CONNECTION RA DAMPER TOTAL PRESSURE SENSING TUBE STATIC PRESSURE SENSING TUBE AIR FLOW X BULLET AMPLIFIER WING AIRFLOW STATION SHEET METAL STRIP ALAA EXTERIOR INSULATION FIELD PROVIDED WHEN MOUNTED OUTDOORS 000643 MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 50 I O Zone 583 Controller Specifications POWER REQUIREMENTS 24VAC 10 20VA NETWORK COMMUNICATION BACnet native Modbus RTU or N2 bus at up to 76 8K baud or 156K baud over ARCnet LonWorks using plug in communications board USER INTERFACE MDT modulating discharge temperature control with manually adjusted potentiometer at remote panel MRT modulating room temperature control with manually adjusted potentiometer at remote panel MRT Pro modulating room temperature control with intelligent room thermostat MRT Expert modulating room temperature control with intelligent room sensor and BACview LCD control panel MEMORY 1M bytes of flash memory and 512K bytes of non volatile battery backed RAM REALTIME CLOCK Battery backed to keep time in event of power failure TEMPERATURE OPERATING RANGE O F to 130 F 10 to 95 RH non condensing INPUTS OUTPUTS 8 Universal Inputs e Inputs 1 amp 2 Dry thermistor 0 5VDC Inputs 3 6
9. ST 01 EXHAUST FAN INTERLOCK TO PREMOUS ALARM STATUS PILOT DUTY RATED INTERLOCKING RELAY Es RE 80 pad LOW ALERT RE 81 m ASW 72 o n RS 01 RE 12 ASW 09 c 65 01 RS 02 HIGH ALERT USER CONFIG INPUT 0 5 VOC PAGE B To DDC Control 0 10 vdc Input TO PREMOUS TO PREMOUS PAGE PAGE VG 07 Do Not Ground Transformer Use Only Shielded Signal Conductors 24 vac TR 04 251 ese Format Lstat Rnet Port Jumper Selector Jumper Ge Gain Jumper Thermistor Contact in 8 0 5 vde Communication Selection Jumper y SHIELDED CABLE 4 USER CONFIG OUTPUT 0 10VDC Communications Selection INPUTS 182 EIA 485 Comm Selector 05V THERM OR DRY DIP Switch BACnet over ARC 156 BAUDRates SW1 SW2 PROTOCOLS swi SW2 9500 OFF BACnet Of Of Of On 384K On Qf 2 On Of 768K On Modbus INPUTS 384 ND THERM OR DRY BURNER CONTROL glass 2 1 0 ZONE 583 24 Vac 50 60 CYCLE 083A USE COPPER CONDUCTORS ONLY INPUTS 5 amp 6 THERN DRY or LStat CAUTION To Reduce The Risk of Fire or Power for DOs pr Eecncal Sask Do Nat mterconnect Outputs of Different Class 2 Circus BACret Direct Fired Indoor and Outdoor Units MUA SVPO1A EN TRANE
10. transducer The control variable will be supply air temperature As the supply air temperature increases the chilled water valve should open to lower the temperature The temperature transducer has a range of 50 F 85 F The user would like the supply air temperature to be 75 F but does not want it to drop below 70 F or go above 80 The parameters entered on the keypad display will be Direct as input increases PID Select output increases High Input Val 85 F Low Input Val 509F User Ctrl SP 759F Max User SP 809F Min User SP 709F The temperature transducer senses the supply air temperature and sends a corresponding signal to the AdaptAire controller The controller compares this signal to the desired user control setpoint 759F and uses the PID loop to modulate the output from 0 100 0 10Vdc The output is connected to the chilled water valve that opens or closes to maintain the specified supply air temperature If the supply air temperature is 75 F the output from the controller will be determined by the PID control sequence and the override will have no effect on the output If the supply air temperature is more than 75 the output from the controller will be determined by the PID control sequence or the override whichever is less If the supply air temperature is less than 75 the output from the controller will be determined by the PID control sequence or the override whichever is more MUA SVPOIA EN Direct Fi
11. 55 F To change the Heating Night Setback setpoint scroll through the SETPOINTS menu tree locate the Heating Night Setback setpoint and enter a new temperature The allowable temperature range is 40 F 80 F Cooling Night Setback The Cooling Night Setback function automatically cycles the unit on if the room temperature rises above the Cooling Night Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled to be off and the Cooling Night Setback function turns the unit on the unit will be cycled off once the room air temperature has fallen 2 below the Cooling Night Setback setpoint This function toggles digital output DOL The default for this setpoint is 100 F To change the Cooling Night Setback setpoint scroll through the SETPOINTS menu tree locate the Cooling Night Setback setpoint and enter a new temperature The allowable temperature range is 75 F 125 F Auxiliary Unit Enable The Auxiliary Unit Enable function overrides all other Auto Mode functions and automatically cycles the unit into operation This MUA SVPOIA EN Direct Fired Indoor and Outdoor Units e TRANE Unit Operating Modes function is activated whenever a contact is closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel Heating and cooling functions use the Night Setback Setpoints See the Typical Wiring Schematic and Multiplexed Input sections of this manu
12. OHM RESISTOR 8 06K OHM RESISTOR 10 OHM MAIN SUPPLY FAN MOTOR STARTER MAIN DISCONNECT SWITCH OPTIONAL AUXILLARY UNIT ENABLE BY OTHERS DAMPER MOTOR END SWITCH OPTIONAL 100 PERCENT OUTSIDE AIR SWITCH ee OTHERS PROOF OF VALVE CLOSURE SWITCH OPTIONAL PUMP MOTOR DISCONNECT SWITCH WATER LEVEL CUTOFF SWITCH AUTO DRAIN SWITCH OPTIONAL NIGHT SETBACK THERMOSTAT EVAP FREEZE STAT OPTIONAL CONTROL CIRCUIT TRANSFORMER IGNITION TRANSFORMER MODULATING VALVE TRANSFORMER LOW VOLTAGE TRANSFORMER DAMPER MOTOR TRANSFORMER OPTIONAL OUTSIDE AIR TEMPERATURE SENSOR SPACE TEMPERATURE SENSOR OPTIONAL DISCHARGE AIR TEMPERATURE SENSOR UNIT CONTROL MODULE PILOT GAS VALVE MAIN GAS VALVE AUXILARY GAS VALVE NORMALLY OPEN VENT VALVE OPTIONAL MODULATING GAS VALVE DRAIN VALVE OPTION AL 3 WAY FILL VALVE OPTIONAL VG 07 VW 80 W 81 MUA SVPOIA EN Direct Fired Indoor and Outdoor Units CAUTION OPEN MAIN DISCONNECT SWITCH BEFORE SERVICING EQUIPMENT AW a 0 01 y 200 250 460 575 VOLT lo 3 PHASE 60 HERTZ 3T fo a ro 57 01 CUSTOMER EXHAUST INTERLOCK JUMPER IF NOT USED y 49 ee 4 9 50 77 SW 77 5 11 RE 14 T E 152 ADDITIONAL MIXING BOX 210 pAGTUATORS MRED IN t CONTROL PARALLEL AS REQUIRED TR 06 ER OO 0 A N C R A
13. Supersedes New Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice
14. The transducer is extremely sensitive Blowing too hard into the sensing tube may damage the transducer Is there approximately 5VDC across the COM and OUT terminals of the pressure transducer Yes Continue No The pressure transducer is defective Replace it Remove both of the plastic tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution The transducer is extremely sensitive Blowing too hard into the sensing tube may damage the transducer Is there approximately 5VDC across the controller input terminals that are connected to the transducer Yes There is a problem with the controller Replace it No Thereis an open in the wiring between these pressure transducer and the AdaptAire controller terminals Locate and rectify FAULT CODE Energy Save Mode 3 PROBLEM The controller has turned off the burner enable output because it determined the inlet air temperature exceeds the Economizer setpoint See the Energy Savings Mode 3 section of this manual for more information MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 39 e TRANE Diagnostics SOLUTION If OAT RoomT or DAT are such that heat is required 1 15 the outside air temperature OA Temp displayed on the BACview remote reading 150 F or more Yes The outside air sensor circuit or the sensor itself is shorted Unplug the input jack from the AdaptAire controller Did the display change to 40 F or less
15. automatically opens the outside air dampers and closes the return air dampers This function is activated whenever a contact is closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information The 100 Outside Air function overrides all other damper control functions See User Configured PID Control for use with non recirculating units Minimum Ventilation To change the Minimum Ventilation requires the use of a BACview or PC The Minimum Ventilation function defines the minimum outside air percentage and automatically prevents the dampers from modulating below this point This function can be used in heating or cooling mode If the unit served by this control is a direct fired heater that recirculates air before the burner and is operating in the heating mode the unit will automatically keep the minimum outside air at 20 If the outside air drops below 20 the burner will cycle off To specify the Minimum Ventilation scroll through the menu tree locate the Setpoints branch and select Min Vent and enter the desired outside air percentage The allowable range is 0 100 outside air Freezestat To change the Minimum Ventilation requires the use of a BACview or PC The Freezestat function automatically cycles the unit off if the supply air temperature drops below the Freezestat setpoint for 3 con
16. connecting the high sensing port of a manometer to one of the airflow sensing tubes and the low sensing port to the other Is the differential pressure approximately the midpoint between the high and low airflow switch setpoints No Close the profile opening until the differential pressure is approximately the midpoint between the high and low airflow switch setpoints Reconnect the sensing tubes restart the burner and verify the airflow switch remains closed when the burner is at the maximum rated input Continue Yes Continue 2 Areall of the filters dirty Yes Install clean filters and continue No Continue 3 Does the external static pressure match that listed on the rating plate No Verify all associated ductwork is installed as designed and there are no obstructions Continue Yes Continue 4 Does the fan RPM match that listed on the Spec Sheet No Correct to increased fan speed and continue Yes Continue 5 Are the airflow switches sensing tubes obstructed Yes Clear and continue No Continue 6 Contact factory FAULT CODE Clogged Filter Switch 36 PROBLEM The filter air pressure switch has closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel indicating a clogged filter See the Typical Wiring Schematic Multiplexed Input and Clogged Filter sections of this manual for more information SOLUTION If clogged filter switch is
17. heating will be enabled and the unit will be in the heating mode Continue following the solid line in a clockwise direction to the heating setpoint Once the room temperature rises to the heating setpoint the heating mode will be disabled and the room will be in the ventilation mode Figure L Cooling Mode Cooling mode T T Cooling E 2 F of cooling SP mode v M cooling enable P P R R A T T U 7 R Ventilation R E moda 5 R E z 2 F of heating SP x heating enable 2 Heating mode Heating mode Heating mode Cooling Mode allows the cooling to operate as needed and is activated whenever the room temperature is 2 above the cooling setpoint In the Cooling Mode the cooling output will cycle to maintain a constant room temperature The cooling output does not have an anti cycle delay The MDT control system does not support the Cooling Mode To change the desired cooling room temperature of an MRT control system rotate the temperature setpoint knob on the remote panel clockwise to the desired temperature The allowable temperature range is 55 F 90 F The cooling will be disabled when the room temperature drops to the Cooling Setpoint MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 15 e TRANE Unit Operating Modes To change the desired cooling room temperature of an M
18. locate the ECONOM IZER Setpoint and enter a new temperature The default for this setpoint is 65 F The allowable temperature range is 40 F 80 F Ventilation Mode occurs when the fan is running but the unit is not providing heating or cooling On an MDT control system the heating mode is activated when the remote temperature setpoint knob is turned to start the unit See Energy Savings Modes for more information On all other systems the ventilation mode is dependant on the room temperature The heating ventilation cooling operation is demonstrated below The dotted line in the middle of the diagram represents the change between room temperature rise and room temperature fall Select a point on the heavy line in the diagram to determine the mode of operation EXAMPLE Start at point The unit is in the ventilation mode and the room temperature is rising Follow the dashed line upward If the room temperature rises to a temperature that is 2 F over the cooling setpoint the cooling will be enabled and the unit will be in the cooling mode Follow the solid line clockwise Once the room temperature has fallen to the cooling setpoint the cooling mode will be disabled and the room will be in the ventilation mode Follow the dashed Direct Fired Indoor and Outdoor Units MUA SVPO1A EN Cooling Mode Unit Operating Modes line downward If the room temperature falls to a temperature that is 2 F below the heating setpoint the
19. or WebCTRL internet connection is required for these features 2005 American Standard Inc All rights reserved MUA SVPOLA EN e TRANE NETWORKING AdaptAire is adaptable to a variety of different network architectures and protocols Each controller has built in protocol translation and can be configured for operation on ARCnet156 or EIA 485 communication networks See Appendix IV for specific controller specifications The AdaptAire system can be connected to most existing building automation systems Some systems may require the use of special controllers and network communication devices See Appendix I for Device Parameters and Cache Setup information ADAPTAIRE DEFAULT SETTINGS The following is a list of AdaptAire DDC controller defaults These are the default operating parameters set at the factory prior to shipment Table1 Default settings ITEM DEFAULT RANGE Unit Network Address 002 binary dips 000 255 binary dips Unit Operating Mode OFF OFF MANUAL AUTO Time Clock Schedule None 4 Daily 12 Holiday 2 Override schedules Heating Cooling Operating Heating HEATING COOLING Mode Damper Operating Mode Manual MANUAL BUILDING PRESS MIXED AIR TEMP Fuel Selection Natural Gas NATURAL PROPANE Heating Night Setback 55 F 40 F 80 F Cooling Night Setback 100 F 75 F 120 F Room Temperature Setpoint 65 F 55 F 90 F Freezestat 45 F 35 F 50 F Out
20. the PID type direct or reverse acting and establish upper and lower control limits Five keypad entries define the operational parameters These parameters are User Control Setpoint Minimum User Setpoint Maximum User Setpoint Low Input Value and High Input Value The low and high input values describe the input transducer range The control setpoint is the primary operational parameter while the minimum and maximum setpoints describe the extents of the desired operating range and provide secondary control as described below The allowable range for all of these parameters is 9999 99 99999 99 The analog input and output are polarity sensitive and can be configured for different types of inputs See the Typical Wiring and Unit Controller Specification sections of this manual for more information regarding the inputs and outputs The analog input must be connected to IN 1 This input must be configured for either of two different types of input signals 0 5Vdc The output impedance must not exceed 10K The input impedance of the controller is 1M This input is polarity sensitive Be sure the connections from the source are correctly polarized at the controller e Thermistor Precon type 2 10k ohm at 77 F Input voltages should range between 0 489V and 3 825V See the wiring diagrams for recirculating model units for typical connections of transducers e The IN 1 configuration jumpers on the controller must be set for the appropria
21. N O 5 80 90 80 50 81 5080 8 MT 80 50 81 PS 10 TO NEXT PAGE 5 12 Bg p 5 4 RE 34 RE 35 RES E a es LT 15 asl FIELD PURGE RE 28 FL 02 PS 04 PS 07 L Lo 8155 1178 55 TRANE Typical Wiring Schematic Figure IL Recirculating DFOA and DFIA model diagram TO PREVIOUS TO PREVIOUS TO PREVIOUS PAGE PAGE PAGE 3 2 29 6 02 RE 27 To DOC Control REM EXHAUST FAN INTERLOCK ALARM STATUS 0 10 Do Not Ground ST 01 RE 90 Input Transformer Use 7 05 ci Bjk 3 rk si ised 0 PILOT DUTY RATED sega ng tors INTERLOCKING RELAY 24 vac TR WIS RE 80 32 35 o fe z 81 Bx 0 54 RE 81 4 04 E ing from unit into building for transducer PT 13 is by others E dus ES High side port tube piped into building ond Orn B low side port tube piped to atmosphere ners ER GEN mo 50 NS Note Piping between unit ond flow station est EH Rn for tronsducer PT 15 is by others Tube amper po on air entering side of f
22. OL CIRCUIT FUSE EVAP PUMP MOTOR FUSE COMBINATION CO amp NO2 DETECTOR OPTIONAL KEYPAD DISPLAY MODULE OPTIONAL BURNER ON LIGHT REMOTE FAN ON LIGHT REMOTE COOLING ON LIGHT REMOTE CLOGGED FILTER LIGHT REMOTE UNIT ENABLE POTENTIOMETER MAIN SUPPLY FAN MOTOR DISCHARGE DAMPER MOTOR OPTIONAL INLET DAMPER MOTOR OPTIONAL EVAP PUMP MOTOR MAIN FAN MOTOR OVERLOAD LOW GAS PRESSURE SWITCH OPTIONAL HIGH GAS PRESSURE SWITCH OPTIONAL HIGH VELOCITY SWITCH LOW VELOCITY SWITCH CLOGGED FILTER SWITCH OPTIONAL FLAME SAFEGUARD RELAY FLAME FAILURE RELAY CLOGGED FILTER RELAY OPTIONAL HOLDING RELAY OPTIONAL 7 DAY TIME CLOCK OPTIONAL ELECTRONIC RELAY BURNER STATUS RELAY BURNER ENABLE RELAY COOLING ENABLE RELAY COOLING INTERLOCK RELAY SAFTEY CIRCUIT STATUS RELAY UNIT ENABLE RELAY FAN STATUS RELAY FLAME SUPERVISION SWITCHING RELAY INTERLOCKING RELAY OPTIONAL LOW ALERT RELAY OPTIONAL HIGH ALERT RELAY OPTIONAL ALARM STATUS RELAY RESISTOR 1K OHM RESISTOR 2K OHM RESISTOR 4 02K OHM RESISTOR 8 06K OHM RESISTOR 10 OHM MAIN SUPPLY FAN MOTOR STARTER MAIN DISCONNECT SWITCH OPTIONAL AUXILLARY UNIT ENABLE BY OTHERS DAMPER MOTOR END SWITCH OPTIONAL 100 X OUTPUT SWITCH OPTIONAL PROOF OF VALVE CLOSURE SWITCH OPTIONAL PUMP MOTOR DISCONNECT SWITCH WATER LEVEL CUTOFF SWITCH AUTO DRAIN SWITCH OPTIONAL NIGHT SETBACK THERMOSTAT OPTIONAL EVAP FREEZE STAT OPTIONAL CONTROL CIRCUIT
23. RT Pro control system depress the Warmer button to increase the desired room temperature setpoint or depress the Cooler button to decrease the desired room temperature setpoint Each push of a button changes the temperature setpoint by 1 F The setpoint can be changed a maximum of 10 F from the default of 72 F To change the desired cooling room temperature of an MRT Expert control system scroll through the SETPOINTS menu tree using the BACview locate the Occupied Cooling Setpoint and enter a new temperature The allowable temperature range is 61 F 96 F The burner will modulate using a PID loop to maintain this temperature Additionally on all controls systems except the MDT the control system cycles the cooling output to maintain the supply air temperature within a defined operating window This window defines the maximum and minimum discharge temperatures To change the desired minimum supply or discharge air temperature scroll through the SETPOINTS menu tree locate the CLG MIN DA Setpoint and enter a new temperature This temperature must not be greater than the CLG MAX DA Setpoint The allowable temperature range is 55 F 130 F This sets the lowest discharge air temperature that will leave the unit To change the desired maximum supply or discharge air temperature scroll through the SETPOINTS menu tree locate the CLG MAX DA Setpoint and enter a new temperature This temperature must not be less than the CLG MIN DA Setpoi
24. S TRANE Direct Fired Indoor and Outdoor Make Up Air Units DFIA DFOA J anuary 2007 MUA SVPOLA EN e TRANE Overview A glossary has been provided to assist the reader in understanding distinctive terms and phrases These terms and phrases appear in italics Trane s Digital Control System AdaptAire is designed to give the user the ultimate in unit performance and operational flexibility adaptability and reliability in a user friendly package The AdaptAire DDC system is a standard component on Trane heating and cooling units Non recirculating units equipped with the AdaptAire system do not have return air capabilities and all functions related to recirculating units are not relevant Where a function is similar but different between recirculating and non recirculating units the function is explained separately AdaptAire accepts single or multiple units on the system network Each unit can be provided with a local user interface The operating parameters for individual units may be input through the local interface A PC may also be connected to the network This allows the user to configure each unit separately or all units can be configured simultaneously A controls contractor can provide assistance in networking Operational modes include time scheduling filter monitoring and multiple damper control and temperature control schemes All of these modes provide the maximum in unit operational flexibility The
25. Sequence Room Sensor Heating Sequence Cooling Sequence Calibrate Sequence Schedule Sequence Previous Home MUA SVPOIA EN Direct Fired Indoor and Outdoor Units e TRANE Menu Selection Alarm Fuel Select FUEL SELECT HOTKEY 9 Fuel Type Natural Gas Propane Login Home Previous Unit Modes 48 Direct Fired Indoor and Outdoor Units MUA SVPO1A EN TRANE Thermostat Output Curve 10 K Ohms Thermistor Output Curve Figure 5 Uses FG figure Typical 10 000 Ohm Thermistor Output Curve 180000 TES 170000 160000 150000 140000 130000 120000 110000 100000 80000 70000 60000 50000 40000 Resistance Ohms 30000 20000 90000 aE 10000 o E Sy 59 68 77 86 95 1 04 113 122 131 Temperature in Degrees F 140 149 Figure 6 Uses FG figure Typical 10 000 Ohm Thermistor Output Curve 30000 25000 20000 15000 10000 Resistance Ohms 5000 MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 32 41 50 59 68 86 95 104 49 TRANE Airflow Station Layout Figure 7 Airflow station layout AIRFLOW STATION LAYOUT A NOTE
26. TRANSFORMER IGNITION TRANSFORMER MODULATING VALVE TRANSFORMER LOW VOLTAGE TRANSFORMER OUTSIDE AIR TEMPERATURE SENSOR SPACE TEMPERATURE SENSOR OPTIONAL DISCHARGE AIR TEMPERATURE UNIT CONTROL MODULE PILOT GAS VALVE MAIN GAS VALVE AUXILARY GAS VALVE NORMALLY OPEN VENT VALVE OPTIONAL MODULATING GAS VALVE DRAIN VALVE OPTIONAL 3 WAY FILL VALVE OPTIONAL MUA SVPOIA EN Direct Fired Indoor and Outdoor Units CAUTION OPEN MAIN DISCONNECT SWITCH BEFORE SERVICING EQUIPMENT CUSTOMER EXHAUST FAN INTERLOCK JUMPER IF NOT USED ry 40 sw 01 i OL 01 1 200 230 460 575 VOLT fo aro 3 PHASE ET H o rcs 60 HERTZ fo a pv T3 3 WRE Eo CB8 09 120 TR 0 vn Sw 8 _ SW 80 1B e Fo J1A 4 R TC rose 1 Sw 81 a ure sw 81 SW 80 PS NN 5 0 re at On 50 77 SW 77 PS 11 PS 10 ager eat mg ieee pino RE 14 ponm ST 01 sA 80 E Coen 5 12 7 e FIELD PURGE RE 28 FL 02 PS 04 PS 07 OCATION Ir RE 56 lt 15 M neret fig 19 lt gt RE 75 oNe 2 PILOT MAIN FLAME FLAME TO NEXT TO NEXT ud nop PAGE TO NEXT PAGE PAGE 53 54 TRANE Typical Wiring Schematic Figure 9 Non recirculating with evap DFOA and DFIA model diagram Bs
27. ace the sensor At 70 F the resistance should be 10K See thermistor output curve for other temperatures If it is not shorted there is a short in the wiring between the sensor and the input plug Determine cause and rectify Refer to Appendix II for a typical 10K thermistor output curve No Contact factory FAULT CODE Energy Save Mode 2 38 PROBLEM The controller has turned off the burner enable output because it determined the burner s minimum firing rate exceeds the allowable equivalent temperature rise See the Energy Savings Mode 2 section of this manual for more information SOLUTION If OAT RoomT or DAT are such that heat is required L Are the outside air hood filters or bird screen or any associated outside air ductwork obstructed Yes Clear obstruction or change filters No Continue Are the outside air and return air dampers and actuators working properly Yes Continue No Make necessary adjustments and force the unit to recalibrate See Calibrate in the Resets Section of this manual If equipped are the flow measuring station pitot tubes and pressure tubing clear Yes Continue No Clean and force the unit to recalibrate See Calibrate in the Resets Section of this manual Do the dampers track with a change in the OA setpoint The dampers utilized on the unit are not linear with respect to airflow and openness and as such the proportion of outside air to damper movement will not b
28. actory No The outside air temperature is too hot to determine the actual cause of the problem Reset the alarm and recheck when the outside air temperature is much cooler Yes This signal is fed to the gas valve modulation signal conditioner Disconnect the wires from input signal terminals on the signal conditioner and measure the voltage on the wires Is it the same as the voltage coming from the controller No Thereis an open in the wiring from the controller output Correct wiring and reconnect the wires to the terminals on the signal conditioner Be sure the ground wire from the controller output terminal is connected to the signal conditioner s negative terminal Yes Continue Is there 24VAC on the signal conditioner power terminals Determine cause and rectify Yes Continue Is there twice the DC voltage on the signal conditioner s output terminals as there is on the signal conditioner s input terminals No Replace the signal conditioner Yes Continue Is the DC voltage on the modulating valve terminals the same as the DC voltage on the signal conditioner s output terminals There is a break in the wiring between the signal conditioner and the modulating valve terminals Determine cause and rectify Yes The electronics are working to this point Continue Is there sufficient temperature rise for the amount of outside air that is being delivered to the space No Follow the instructions
29. al for more information This function can be used with a twist timer toggle switch door switch exhaust fan interlock or any other dry contact to override the time clock schedule Heating Ventilating Cooling Operating Modes Heating Mode 12 The AdaptAire DDC controller automatically switches between the heating ventilating and cooling modes of operation Heating M ode allows the burner to operate as needed and is activated whenever the room temperature is 2 below the heating setpoint General Bumer Control In the Heating Mode the burner will modulate to maintain a constant temperature To change the desired heating discharge or room temperature of an MDT or MRT control system rotate the temperature setpoint knob on the remote panel clockwise to the desired temperature To change the desired heating room temperature of an MRT Pro control system depress the Warmer button to increase the desired room temperature setpoint or depress the Cooler button to decrease the desired room temperature setpoint Each push of a button changes the temperature setpoint by 1 F The setpoint can be changed a maximum of 10 F from the default of 72 F To change the desired heating room temperature of an MRT Expert control system scroll through the SETPOINTS menu tree using the BACview locate the Occupied Heating Setpoint and enter a new temperature The allowable temperature range is 55 F 90 F The burner will modulate using a PID loop t
30. closing 1 Are the filters dirty Yes Install clean filters and continue No Continue 2 Are the airflow switch sensing tubes obstructed Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics Yes Clear and continue No Continue Is the airflow switch setpoint properly adjusted No Adjust setpoint Yes Continue Are the wires connected to the air pressure switch s normally open contact No Rewire switch and continue Yes Continue Is the air pressure switch s normally open contact open No Disconnect the sensing tubes and recheck Replace the switch if contacts do not open Yes Continue Find the clogged filter switch on the electrical schematic and identify the control panel terminals to which it is connected Disconnect the wire from these terminals Does this clear the alarm Yes There is short in the wiring between the terminal strip and the switch Determine cause and rectify No Continue Unplug the connector from the controller that is connected to the multiplexed input Does this clear the alarm Yes There is short in the wiring of the multiplexed resistors Determine cause and rectify No Thereis an internal short in the controller Replace the controller FAULT CODE Energy Save Mode 1 PROBLEM The controller has turned off the burner enable output because it determined the mixed air temperature is equal to or greater than the minimu
31. e TRANE 42 Diagnostics Yes The AdaptAire control system must be in the Heating mode In this mode the smallest allowable amount of outside air is 20 Verify the system is in the Heating mode and the MIN VENT SP is set for 20 See Heating Cooling Mode and Minimum Ventilation Sections of this manual No Continue 2 Is cooling or ventilation required Yes The AdaptAire control system must be in the Ventilation Cooling mode In this mode the smallest allowable amount of outside air is 0 Verify the system is in the Cooling mode and the MIN VENT SP is set for the desired percent of outside air See Heating Ventilating Cooling Mode and Minimum Ventilation Sections of this manual No Contact factory Direct Fired Indoor and Outdoor Units MUA SVPO1A EN TRANE Menu Selection Menu Selection Tree for BACview This section will assist the user in navigating the menu functions of the control program For convenience Hotkeys are provided to allow the user to jump directly to a specific menu heading Simply press and hold the FN key While holding the FN key press the number key of the desired menu and it will appear The number key associated with the menu heading is shown below Links to other menu headings are also available by pressing one of the 4 keys located directly below the screen _ zi _ Link Keys E gt E _ E 2 NEM D E LEO E E i Funct
32. e building pressure As the building pressure increases the fan speed should decrease The building pressure transducer has a range of 0 1 to 0 1 The user would like the building Direct Fired Indoor and Outdoor Units MUA SVPO1A EN Functions pressure to be 0 03 but does not want it to drop below 0 0 or go above 40 05 The parameters entered on the keypad display will be PI D Select Reverse as input increases output decreases High Input Val 10 Low Input Val 0 10 User Ctrl SP 0 03 Max User SP 0 05 Min User SP 0 00 The pressure transducer compares the pressure outside the space to the pressure inside the space and transmits a corresponding signal to the AdaptAire controller The controller compares this signal to the desired user control setpoint 0 03 and uses the PID loop to modulate the output from 0 100 0 10Vdc The output is connected to the VFD that changes speed to maintain the specified building pressure If the building pressure is 0 03 the output from the controller will be determined by the PID control sequence and the override will have no effect on the output If the building pressure is more than 0 03 the output from the controller will be determined by the PID control sequence or the override whichever is less If the building pressure is less than 0 03 the output from the controller will be determined by the PID control sequence or the override whichever is more Figure3 Reverse act
33. e exactly Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics equal to the setpoint However at 20 the dampers should be at least 74 open Yes Continue No Check the damper motor and linkage connections When 24VAC is powering the damper actuator and the control signal is OVDC the outside air damper should be close to a rattle tight position and the return air damper should be open If the 24VAC power is removed the actuator will draw the outside air damper tightly closed and the return air damper tightly open When 24VAC is powering the damper actuator and the control signal is 10VDC the outside air damper should be fully open and the return air damper should be closed Is there approximately 24VAC at the COM and EXC terminals on the airflow station pressure transducer Yes Continue Is there 120VAC on the primary side of the low voltage transformer and 24VAC volt at the transformer secondary Yes There is an open in the wiring between the transformer and the transducer Locate the wiring problem and rectify No If there is 120VAC on the primary and OVAC on the secondary replace the transformer If there is OVAC on the primary there is an open in the wiring supplying power to the transformer Locate the wiring problem and rectify Remove both of the plastic tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution
34. echeck when the outside air temperature is much cooler Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics Yes This signal is fed to the signal conditioner Disconnect the wires from the signal conditioner s input signal terminals and measure the voltage on the wires Is it the same as the voltage coming from the controller There is an open in the wiring from the controller output Correct wiring and reconnect the wires to the terminals on the signal conditioner Be sure the wire from the controller s ground terminal is connected to the signal conditioner s ground terminal Yes Continue 5 15 there 24VAC on the signal conditioner power terminals No Determine cause and rectify Yes Continue 6 15 there twice the DC voltage on the signal conditioner s output terminals as there is on the signal conditioner s input terminals No Replace the signal conditioner Yes Continue 7 Is the DC voltage on the modulating valve terminals the same as the DC voltage on the signal conditioner s output terminals No Thereis a break in the wiring between the signal conditioner and the modulating valve terminals Determine cause and rectify Yes The electronics are working to this point Continue 8 Isthere sufficient temperature rise for the amount of outside air that is being delivered to the space No Follow the instructions in this manual for placing the unit in Manual damper c
35. ed and the Calibration function has been rearmed FAN COUNT Fan Count records each fan start To reset a fan count scroll through the menu tree locate the Unit Resets branch and select Fan Count Press the Enter key The word OFF should flash Now press the INC key and the word ON should flash on the display Press the Enter key again and ON should stop flashing Repeat this process so the word OFF is displayed and not flashing The fan count has now been cleared and the Fan Count function has been rearmed HEATING COUNT Heating Count records each burner start To reset a heating count scroll through the menu tree locate the Unit Resets branch and select Heating Count Press the Enter key The word OFF should flash Now press the INC key and the word ON should flash on the display Press the Enter key again and ON should stop flashing Repeat this process so the word OFF is displayed and not flashing The heating count has now been cleared and the Heating Count function has been rearmed COOLING COUNT Cooling Count records each cooling start To reset a cooling count scroll through the menu tree locate the Unit Resets branch and select Cooling Count Press the Enter key The word OFF should flash Now press the INC key and the word ON should flash on the display Press the Enter key again and ON should stop flashing Repeat this process so the word OFF is displayed and not flashing The cooling count has now been cleared and the Cooling Count
36. es See the Diagnostic section for the previous alarm No Continue See flame relay troubleshooting information in unit Installation Operation and Maintenance M anual Diagnostics Non Critical Fault Codes This section should assist the user in troubleshooting non critical fault code messages that have been displayed on the local user interface Most of these faults are automatically reset once the fault is corrected or condition changes 32 Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics FAULT CODE Unit off Fan on PROBLEM The controller has not activated the unit enable output to start the fan but the fan status input is receiving a signal that the fan is running This fault will automatically clear about 15 seconds after the fault is corrected SOLUTION If fan is running 1 Is controller unit enable output LED for lit Yes There is a problem with the controller program Call factory No Continue Is controller output contact for the unit enable output closed Yes Turn off the power to the controller and recheck If contact is still closed the controller output is shorted Replace the controller No Continue Is the unit enable relay energized Yes There is a short or jumper in the wiring Determine cause and rectify No Continue Is motor starter energized Yes There is a short or jumper in the wiring Determine cause and rectify No Continue Is
37. etween the sensor and the input plug Determine cause and rectify Refer to Appendix II for a typical 10K thermistor output curve No Continue 2 Is the discharge air temperature DA Temp displayed on the BACview remote reading 40 F or less Yes That sensor circuit or the sensor itself is open J umper the input for the sensor Did the display change to 150 F or more No There is an open in the controller input Replace the controller Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is open replace the sensor At 77 F the resistance should be 10K See thermistor output curve for other temperatures If it is not open there is a break the wiring between the sensor the input plug Determine cause and rectify No Continue 3 Reset the alarm Check and note the DC voltage at output for the gas valve modulation Set the Heating Setpoint for 90 F Set the MAX DAT and MIN DAT Setpoints for 130 F Did the Burner VDC displayed on the BACview remote increase No Unless the outside air temperature is extremely warm the Burner VDC should have increased to 75VDC or more Close the manual main gas MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 26 e TRANE Diagnostics valve closest to the burner and measure the discharge air temperature Is it less than 130 F Yes There is a problem with the controller program or controller itself Contact the f
38. function has been rearmed DDC controllers are designed with a finite number of inputs and outputs Multiplexing expands the functionality of the controller by allowing multiple devices to effectively share the same input This is usually accomplished by connecting resistors either in a series or parallel configuration to an analog Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Clock Set Functions input A switch is used in conjunction with each resistor When a switch is closed the resistance at the controller input changes This allows the controller to identify which switch has closed The controller is programmed to associate each different resistance with a specific function For example when the optional clogged filter switch is closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel this tells the controller that the filters are clogged and it notifies the user through the local user interface See the Typical Wiring Schematic section of this manual for more information The Clock Set function is used to set the current time and date as well as enabling Daylight Saving Time To set the clock scroll through the menu tree locate the Clockset branch select Date and enter a new date and time Select DST to enable Daylight Saving Time Daylight Saving Time is the default If the unit is installed in the southern hemisphere Sou Hem must be enabled The defa
39. ge transformer and 24VAC volt at the transformer secondary Yes There is an open in the wiring between the transformer and the transducer Locate the wiring problem and rectify No If there is 120VAC on the primary and OVAC on the secondary replace the transformer If there is OVAC on the primary there is an open in the wiring supplying power to the transformer Locate the wiring problem and rectify 6 Remove both of the plastic tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution The transducer is extremely sensitive Blowing too hard into the sensing tube may damage the transducer Is there approximately 5VDC across the COM and OUT terminals of the pressure transducer Yes Continue No The pressure transducer is defective Replace it 7 Remove both of the plastic tubes from the airflow station pressure transducer and gently blow into the HIGH side port Caution The transducer is extremely sensitive Blowing too hard into the sensing tube may damage the transducer Is there approximately 5VDC across the controller input terminals that are connected to the transducer Yes There is a problem with the controller Replace it No Thereis an open in the wiring between these pressure transducer and the AdaptAire controller terminals Locate and rectify SOLUTION If less outside air is desired 15 heat required MUA SVPO1A EN Direct Fired Indoor and Outdoor Units 41
40. h and low velocity airflow switch contacts closed No Are the belts on and is the fan motor Yes Contact factory Do not adjust the switches setpoints No Determine cause and rectify Yes Continue Is the fan status relay energized No There is an open or break in the wiring Determine cause and rectify Yes Continue Is the fan status relay s normally open auxiliary contact closed No Replace relay Yes Continue Is there continuity at the controller between the fan status terminals No There is an open in the wiring between these terminals Determine cause and rectify Yes Replace controller SOLUTION If fan motor is not running 1 2 Is the BACview remote indicating an alarm Yes Check previous alarms and continue No Continue Is controller output LED for the unit enable output lit No There is a problem with the controller Replace controller Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics Yes Continue 3 Istheunit enable relay energized No There is an open in the wiring between these terminals Determine cause and rectify Yes Continue 4 Istheunit enable relay s normally open contact closed No Replace relay Yes Continue 5 15 the motor overload relay tripped Yes Determine cause rectify and reset No Continue 6 15 the motor starter energized No Thereis an open or break in the wiring Determi
41. h two rotating knob adjustments MDT and MRT controls remote panel with one rotating knob and an intelligent room sensor MRT Pro controls intelligent room sensor and local user interface panel with LCD display MRT of the above controls with internet base WebCTRL interface MDT modulating discharge temperature is the most basic AdaptAire control for discharge temperature The MDT control system includes a remote control panel equipped with 1 or 2 potentiometers 3 or more pilot lights and up to 2 switches UNIT OFF MODE Off Mode is the default unit operational mode To place the unit in the Off Mode rotate the temperature setpoint knob on the remote control panel counterclockwise to the stop This will place the unit in the OFF mode and extinguish the unit enable light The OFF mode prevents the unit from starting UNIT MANUAL MODE Manual Mode allows the unit to turn on To place the unit in the Manual Mode rotate the temperature setpoint knob on the remote control panel clockwise to the desired discharge air temperature setpoint This will place the unit in the MANUAL mode and enable the burner See Heating Ventilating Cooling Modes and Energy Saving Modes of this manual for more information UNIT AUTO MODE Auto Mode has four different functions that control the unit operation They area time clock heating and cooling night setbacks and a signal from an external source The MDT con
42. he minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation MRT Pro Controls To change the damper mode on an MRT Pro control system requires the use of a BACview or PC See the section related to the MRT Expert for instructions on how to use the BACview for programming MRT Expert Control To place the damper operation in Manual Mode scroll through the menu tree locate the Damper Mode branch and select Manual Pos Next scroll through the menu tree locate the Setpoints branch select Man Vent SP and enter the desired damper position The allowable range is 0 to 100 If the unit served by this control is a direct fired heater that recirculates air before the burner and is operating in the heating mode the unit will automatically keep the minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation Mixed Air Temperature Mode The Mixed Air Temperature mode varies the percentages of outside air and return air to maintain a constant mixed air temperature The AdaptAire controller computes the mixed air temperature using the outside air and return air temperatures and the ratio of their respective airflows MDT and MRT Controls To place the damper operation in Mixed Air Temperature Mode on an MDT or MRT control system be sure the appropriate terminals in the unit control panel are shorted See the Typical Wiring Schematic and Mu
43. ide return air ratio to provide a warmer supply air temperature Energy Savings Mode 1 Non Recirculating Units Energy Savings Mode 1 will automatically disable the burner if the outside air temperature is equal to or greater than the minimum discharge air temperature setpoint and the room air temperature is 5 F above the room air temperature setpoint This function is intended to restrain the room temperature from rising uncontrollably in buildings with internal heat gain In certain conditions it may be necessary to readjust the minimum discharge air or room temperature setpoint upward or adjust the outside return air ratio to provide a warmer supply air temperature Energy Savings Mode 2 Mixing Box Recirculating Direct Fired Units Energy Savings Mode 2 will automatically disable the burner if the burner s minimum firing rate exceeds the allowable equivalent temperature rise This condition is unlikely to occur unless the burner s minimum firing rate is misadjusted and set too high or the inlet air opening is restricted Energy Savings Mode 3 Energy Savings Mode 3 will automatically disable the burner if the outside air temperature is above the Outside Air Economizer setpoint This function is similar to an inlet duct thermostat The burner will cycle back on if the supply air temperature drops 3 F below the Outside Air Economizer setpoint To change the desired outside air economizer temperature scroll through the SETPOINTS menu tree
44. in this manual for placing the unit in Manual damper control mode Adjust the Man Vent setpoint to 20 outside air Is there sufficient temperature rise for the amount of outside air that is being delivered to the space No Contact the factory Yes Continue Yes Continue Verify there is sufficient inlet gas pressure Verify the modulating valve is properly adjusted Verify the burner orifices are clear of obstruction Contact the factory MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 27 e TRANE 28 Diagnostics SOLUTION If bumer was not operating prior to shutdown check prior alam log 1 Is there a prior alarm such as Safety Ckt Airflow Sw or Flame Failure Yes See the Diagnostic section for the previous alarm No Continue Is the room air Room Temp displayed on the BACview remote reading 150 F or more Yes The sensor circuit or the sensor itself is shorted Unplug the input jack from the AdaptAire controller Did the display change to 40 F or less No There is a short in the controller input Replace the controller Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is shorted replace the sensor At 70 the resistance should be 10K See thermistor output curve for other temperatures If it is not shorted there is a short in the wiring between the sensor and the input plug Determine cause and rectify Refer to Appendix II for a t
45. ing Max User SP 05 0 Input gt 03 override scaler 03 100 03 PID 0 100 03 User Ctrl SP 0 100 Output 0 override scaler Input lt 03 00 100 Min User SP MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 23 e TRANE Unit Resets Multiplexed Inputs 24 Functions This section should assist the user in resetting alarms and cycle counters which have been displayed on the BACview ALARM To reset an alarm scroll through the menu tree locate the Unit Resets branch and select Alarm Press the Enter key The word OFF should flash Now press the INC key and the word ON should flash on the display Press the Enter key again and ON should stop flashing Repeat this process so the word OFF is displayed and not flashing The alarm has now been cleared and the Alarm RS function has been rearmed CALIBRATE The Calibrate function forces the controller to recalibrate the return air flow station The recalibration will occur immediately if the fan is running or at the next fan start To recalibrate scroll through the menu tree locate the Unit Resets branch and select Calibrate Press the Enter key The word OFF should flash Now press the INC key and the word ON should flash on the display Press the Enter key again and ON should stop flashing Repeat this process so the word OFF is displayed and not flashing The calibration has now been initiat
46. ion Key Figure 4 Menu selection tree for BACview UNIT MODES HOTKEY 2 Auto Off Man e Auto Off e Manual Damper Mode Temp Ctrl e Bldg Pressure Ctrl e Manual Ctrl Home Setpoints MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 43 e TRANE Menu Selection Status Alarm SET POINTS HOTKEY 3 Htg Occupied F range 55 90 Htg Setback F range 40 80 Htg Min DA F range 40 130 Htg Max DA F range 55 130 Clg Occupied F range 61 96 Clg Setback F range 75 130 Clg Min DA F range 40 130 Clg Max DA F range 55 130 Man Vent range 0 100 Mixed Air 30 80 Bldg Prs WC range 0 05 0 05 Min Vent range 0 100 Economizer Temp F range 40 80 Freeze Stat F range 35 80 Home Status Alarm Resets 44 Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Menu Selection STATUS MENU HOTKEY 4 Note The Status Menu always displays the current status of the fan burner and ALARM HOTKEY 1 RESETS HOTKEY 6 cooling Room Temp F OA Temp F DA Temp F MA Temp F Outside Air Bldg Pres wc Fan Cycles Fan Hours Bnr Cycles Bnr Hours Clg Cycles Clg Hours Damper VDC Burner VCD Safety Ckt Open Closed ActEQ Temp sp MaxEQ Temp F User In User Out Home
47. its those that return air before the burner and employ a special airflow station those that return air before the burner and do not employ a special airflow station and those that recirculate air after the burner Recirculating direct fired units like all direct fired units deliver all of their products of combustion directly to the heated air space For this reason itis extremely important that the proper ventilation rate be maintained to dilute these emissions AdaptAire units that recirculate air before the burner and employ an airflow measuring station utilize a control scheme that measures air pressure to determine the ratio of outside air and return air These units are listed by an independent third party testing agency and use the equivalent temperature rise control scheme to limit burner modulation The AdaptAire system accurately measures the ratio of outside and return air calculates the allowable equivalent temperature rise and automatically limits the burners firing rate This insures the products of combustion delivered to the space by the unit are held at or below allowable OSHA thresholds The outside air percentage is the driving parameter for this function A greater percentage of outside air or dilution air enables the unit to generate a higher allowable equivalent temperature rise AdaptAire units that recirculate air before the burner and do not employ an airflow measuring station utilize a control scheme that measures dam
48. low station is eg d piped to PT 15 high side port and tube EE e oir leaving side piped to low side port fl Thermite ek Ae Coa 13 E were RR Communication damper int lono 8855 munications Selection JUMPER HERE DAMPER CONTROL DAMPER CONTROLI INPUTS 382 Comm Selector 1 Jono 05 OR DRY EI Swich BACnet Ey m L NN W of 8 0 RS 04 Toyo sabias sw grorocos 0 BURNER CONTROL 900 OF Of Bact Sk Or On RE 09 Ast MEUS Mens 79 lono INPUTS 344 Pis 208 RE 75 MENOR ORY m ZONE 583 od Har RE 34 feno CONDUCTORS 7 1 oa 295 x 205 CR R 4 SHIELDED CABLE 7 INS INPUTS 5 amp 6 THERM DRY or LStat M 9 002 44 M cae Pise elec m o Different Class 2 Circuits Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Typical Wiring Schematic MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 57 ex FRAME Trane A business of American Standard Companies www trane com For more information contact your local Trane office or e mail us at comfort trane com Literature Order Number MUA SVPOIA EN Date J anuary 2007
49. ltiplexed Input sections of this manual for more information Rotate the damper control knob on the remote panel to the desired mixed air temperature If the unit served by this control is a direct fired heater that recirculates air before the burner and is operating in the heating mode the unit will automatically keep the minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation MRT Pro Controls To change the damper mode on an MRT Pro control system requires the use of a BACview or PC See the section related to the MRT Expert for instructions on how to use the BACview for programming MRT Expert Control To place the damper operation in Mixed Air Temperature Mode scroll through the menu tree locate the Damper Mode branch and select MA Temp Ctrl Next scroll through the menu tree locate the Setpoints branch select Mixed Air and enter the desired temperature The allowable range is 30 F 80 F If the unit served by this control is a direct fired heater that recirculates air before the burner and is operating in the heating mode the unit will automatically keep the minimum outside air at 20 If the outside air drops below 20 the burner will cycle off See Minimum Ventilation MUA SVPO1A EN Direct Fired Indoor and Outdoor Units 17 e TRANE 18 Unit Operating Modes Building Pressure Mode The Building Pressure mode varies the percentages of outside air and return ai
50. m discharge air temperature setpoint and the room air temperature is 5 F above the room air temperature setpoint See the Energy Savings Mode 1 section of this manual for more information SOLUTION If setpoints are misadjusted 1 Is the mixed air temperature MA Temp displayed on the BACview remote greater than or equal to the minimum discharge air temperature setpoint Yes Increase the HTG MIN DAT setpoint See Heating Mode General Burner Control section of this manual for more information No Continue Is the room temperature more than 5 F above the room air temperature setpoint Yes Increase the HTG OCCUPIED setpoint See Heating Mode General Burner Control section of this manual for more information MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 37 e TRANE Diagnostics No Continue SOLUTION If setpoints not misadjusted 1 Is there a prior alarm such as Insufficient Yes See the Diagnostic section for the previous alarm No Continue Is the discharge air temperature DA Temp displayed on the BACview remote reading 150 F or more Yes That sensor circuit or the sensor itself is shorted Unplug the input jack from the AdaptAire controller Did the display change to 40 F or less No There is a short in the controller input Replace the controller Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is shorted repl
51. mation Yes Continue 3 15 the high gas pressure switch closed No Verify the firing rate pressure at full input is as specified on the unit rating plate The high gas pressure switch setpoint should not be adjusted The firing rate pressure must remain as specified when unit fires at full input Correct gas pressure and reset switch If the switch cannot be reset replace it See Installation Operation and Maintenance Manual for more information Yes Continue 4 15 the safety circuit relay energized No Check for loose wiring and rectify Yes Continue 5 15 the safety circuit relay s normally open contact closed No Replace the relay Yes Continue 6 Is there continuity at the controller between the safety status terminals No There is an open in the wiring between these terminals Determine cause and rectify Yes Replace controller FAULT CODE Bumer Status 30 PROBLEM The controller has activated the bumer enable output but the bumer status input is not receiving a signal that the bumer is on SOLUTION Inspect bumer control circuit and bumer 1 Is there a prior alarm such as Unit On Fan Off Airflow Sw or Safety Circuit Yes See the Diagnostic section for the previous alarm Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Diagnostics No Continue Is the burner enable relay energized No There is an open in the 24VAC circuit Determine cause and rec
52. n This function is activated whenever a contact is closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information This function can be used with a twist timer toggle switch door switch exhaust fan interlock or any other dry contact to override the time clock schedule MRT Expert Controls 10 The AdaptAire MRT Expert modulating room temperature control provides full information regarding unit operation and allows the user to adjust all operational parameters using the included BACview panel UNIT OFF MODE Off Mode is the default unit operational mode To place the unit in Off Mode scroll through the Unit Modes menu tree locate the AUTO OFF M ANUAL branch and select OFF This will place the unit in the OFF mode The OFF mode prevents the fan and burner from starting This mode will override the Time Clock and Night Setback functions UNIT MANUAL MODE Manual Mode allows the supply fan to turn on regardless of the Time Clock or Night Setback functions Heating and cooling functions use the Night Setback Setpoints To place the unit in Manual Mode scroll through the Unit Modes menu tree locate the AUTO OFF MANUAL branch and select MANUAL This will place the unit in the MANUAL mode UNIT AUTO MODE Auto Mode has four different functions that control the supply fan and unit operati
53. ne cause and rectify Yes Check motor and motor wiring FAULT CODE Check Airflow Switches PROBLEM The controller has activated the unit enable output to start the fan and detected that the fan is running from a signal at the fan status input Subsequently the controller has detected a momentary opening of the fan status input The momentary opening must occur within two seconds of the previous closure for this fault to occur This fault requires the operator to correct the condition and reset the alarm before normal unit operation resumes SOLUTION If high airflow switch is opening Do not adjust the switch setpoints 1 Areall of the filters in place No Install filters and continue Yes Continue 2 Does the external static pressure match that listed on the rating plate No Verify all associated ductwork is installed and continue Yes Continue 3 Does the fan RPM match that listed on the Spec Sheet No Correct to reduced fan speed and continue Yes Continue 4 the airflow switches sensing tubes obstructed Yes Clear and continue No Continue 5 Contact factory MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 35 e TRANE Diagnostics SOLUTION If low airflow switch is opening Do not adjust the switch setpoints 1 Does low airflow switch open when the burner is off No Disconnect both pressure sensing tubes from one of the airflow switches and measure the differential pressure by
54. night setbacks and a signal from an external source The MRT control does not support the time clock night setback or auxiliary unit enable functions MRT Pro Controls The AdaptAire MRT Pro modulating room temperature control provides some limited information regarding unit operation on an LCD display and allows the user to adjust a few basic operational parameters The MRT Pro must be placed in the MANUAL or AUTO mode in the controller program using a BACview or PC in order for it to operate The Off Manual and Auto modes will then function as described in the following sections UNIT OFF MODE Off Mode is the default unit operational mode The OFF mode prevents the unit from starting and overrides the Time Clock and Night Setback functions A BACview or PC is required to change from this mode See the section related to the MRT Expert for instructions on how to use the BACview for programming Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE MUA SVPOIA EN Direct Fired Indoor and Outdoor Units Unit Operating Modes UNIT MANUAL MODE Manual Mode allows the unit to turn on regardless of the Time Clock or Night Setback functions A BACview or PC is required to change to this mode See the section related to the MRT Expert for instructions on how to use the BACview for programming UNIT AUTO MODE Auto Mode has four different functions that control the unit operation They area time clock heating and co
55. nt The allowable temperature range is 55 F 130 F This sets the highest discharge air temperature that will leave the unit If the maximum and minimum discharge temperature setpoints are set for the same temperature the supply air temperature will be the same as the setpoint regardless of the room temperature setpoint or actual room temperature Damper Control Modes Manual Mode 16 There are four different modes that control the unit damper operation Manual Mixed Air Temperature Building Pressure and 100 Outside Air Except for the 100 Outside Air mode these operating modes are selected through the menu tree of the local user interface or PC Not all damper modes are available on all units Manual Mode is the default damper operational mode This will set the outside air damper to a fixed position MDT and MRT Controls To place the damper operation in Manual Mode on an MDT or MRT control system be sure the appropriate terminals in the unit control panel are not shorted See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information Rotate the damper control knob on the remote panel to the desired percentage of outside air If the unit served by this control is a direct fired heater that recirculates air before the burner and is Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Unit Operating Modes operating in the heating mode the unit will automatically keep t
56. o maintain this temperature Additionally on all controls systems except the MDT the control system modulates the burner to maintain the supply air temperature within a defined operating window This window defines the maximum and minimum discharge temperatures To change the desired minimum supply or discharge air temperature scroll through the SETPOINTS menu tree locate the HTG MIN DA Setpoint and enter a new temperature This temperature must not be greater than the HTG MAX DA Setpoint The allowable temperature range is 40 F 130 F This sets the lowest discharge air temperature that will leave the unit To change the desired maximum supply or discharge air temperature scroll through the SETPOINTS menu tree locate the HTG MAX DA Setpoint and enter a new temperature This temperature must not be less than the HTG MIN DA Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Unit Operating Modes Setpoint The allowable temperature range is 55 F 130 F This sets the highest discharge air temperature that will leave the unit If the maximum and minimum discharge temperature setpoints are set for the same temperature the supply air temperature will be the same as the setpoint regardless of the room temperature setpoint or actual room temperature Recirculating Direct Fired Heaters Using different controller software the AdaptAire DDC system can accommodate three distinct types of recirculating direct fired un
57. oling night setbacks and a signal from an external source A BACview or PC is required to change to this mode See the section related to the MRT Expert for instructions on how to use the BACview for programming Unoccupied Occupied Control Once the unit is placed in the Auto Mode the unit can be controlled from the keypad on the MRT Pro room sensor The MRT Pro room sensor display will indicate the unit is in the un occupied period To turn the unit on and place it in the occupied period press the Manual On button on the face of the MRT Pro room sensor Pressing the Warmer button can increase the amount of on time Pressing the Cooler button can decrease the amount of on time Each press decreases the time in 30 minute increments Each press increases the time in 30 minute increments to a maximum of 9 hours of on time To turn the unit off and place it in the un occupied period press the Manual On button on the face of the MRT Pro room sensor The display will indicate the amount of on time remaining Press the Cooler button repeatedly until the time reaches zero and the unit shuts off Each press decreases the time in 30 minute increments Auto Mode has four different functions that control the unit operation They a time clock heating and cooling night setbacks and a signal from an external source Scheduling Time Clock This function requires the purchase of a BACview or a direct PC interface to the unit cont
58. on They are a time clock function heating and cooling night setbacks and a signal from an external source to an auxiliary digital input To place the unit in Auto Mode scroll through the Unit Modes menu tree locate the AUTO OFF MAN branch and select AUTO This will place the unit in the AUTO mode This activates the four Auto mode functions Scheduling Time Clock The primary Auto Mode function is the Time Clock Schedule The Time Clock function allows the user to schedule the operational times of the unit There are four different schedules available 24 hour continuous operation daily holiday and override The daily schedule can be programmed Direct Fired Indoor and Outdoor Units MUA SVPO1A EN Unit Operating Modes for up to 4 separate On Off events with any combination of days The normal schedule sets the typical On Off times for the unit The holiday schedule can be programmed for up to 12 separate On Off events with any combination of days The holiday schedule sets the Off times for holidays and other shutdown periods The override schedule can be programmed for up to 2 separate On Off events with any combination of days The override schedule sets the On times that will override the holiday schedule This scheduling system allows the user to program a diverse array of On Off operations An example of a typical schedule would be to have the unit On Monday through Friday from 6 00 AM to 5 00 PM except during the weeks of Thank
59. ontact factory No Continue MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 31 e TRANE Diagnostics Are the main automatic gas shutoff valves energized No The main automatic gas shutoff valves are leaking Turn off unit and close manual gas valves Determine cause of valve failure and rectify Yes Continue Is the flame relay energized No There is a short in the wiring of the gas valves Close manual gas valves Determine cause of short and rectify Yes Continue Is the burner enable relay energized Yes There is a short the wiring of the flame relay Close manual gas valves Determine cause of short and rectify No Continue Is the burner enable relay s normally open contact closed Yes Close manual gas valves Replace the relay No Continue Unplug the input terminals from the input jack Is there continuity at the controller between the burner status terminals No Close manual gas valves There is a short in the wiring between the burner status relay and the burner status terminals Determine cause and rectify Yes Close manual gas valves Replace the controller FAULT CODE Flame Failure Note This fault code is not applicable to all unit types PROBLEM The controller has received a signal from the flame relay indicating a flame failure SOLUTION Investigate flame relay L Is there a prior alarm such as Unit On Fan Off Airflow Sw or Safety Circuit Y
60. ontrol mode Adjust the Man Vent setpoint to 2096 outside air Is there sufficient temperature rise for the amount of outside air that is being delivered to the space No Contact the factory Yes Continue Yes Continue 9 Verify there is sufficient inlet gas pressure Verify the modulating valve is properly adjusted Verify the burner orifices are clear of obstruction Contact the factory FAULT CODE Safety Circuit Open PROBLEM The controller has detected a failure the safety circuit SOLUTION If fan is not running check prior alarm log Is there a prior alarm such as Unit On Fan Off or Airflow Sw Yes See the Diagnostic section for the previous alarm No Continue 2 SetUnit Mode to Manual Did fan start MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 29 e TRANE Diagnostics No See the Diagnostic section for Unit On Fan Off Yes Continue SOLUTION If fan is running check prior alarm log 1 Is the high temperature limit tripped Yes Determine cause and rectify No Continue 2 Is the low gas pressure switch closed No Verify the inlet gas pressure is as specified on the gas piping diagram The low gas pressure switch setpoint should not be adjusted The inlet gas pressure must remain as specified when unit fires at full input Correct gas pressure and reset switch If the switch cannot be reset replace it See Installation Operation and Owners Manual for more infor
61. optional airflow station imparts unparalleled adaptability into the operation of each unit A daily self calibration enables AdaptAire to detect the total air volume and the exact ratio of outside and return air entering the unit Then AdaptAire daily fine tunes the unit s operation based on these new parameters Air volume can vary because of changes in static pressure conditions due to loading filters VAV boxes and building dynamics These varying conditions influence the ventilation air provided by the unit On certain models of recirculating direct fired heaters this impacts the allowable equivalent temperature rise of the unit that is allowed under the latest ANSI standard for direct fired heaters AdaptAire diagnostic capabilities insure swift response to abnormal unit conditions A fault is generated anytime the operational parameters and actual unit operation are at odds An indication of trouble is displayed at the local user interface and system PC in text format In the Diagnostics section of this manual is alist of all faults and possible causes and solutions All of the features of the AdaptAire system are designed to provide the user with real time information At any time the user can display all of the operational parameters make changes if necessary and observe the various temperature pressure and damper readings The system s diagnostic capabilities provide the user with up to the minute status reporting BACview service module
62. per position to determine the percentage of return air These units are not listed by an independent third party testing agency but do use the equivalent temperature rise control scheme to limit burner modulation AdaptAire units that recirculate air after the burner are physically constrained to limit the percentage of return air These constraints are meant to provide the proper dilution air An independent third party testing agency and do not use the equivalent temperature rise control scheme to limit burner modulation does not list these units In order of lowest to greatest priority the burner modulation parameters are room temperature discharge or supply air temperature and equivalent temperature rise There are three Energy Savings modes that could disable the burner Energy Savings Mode 1 Mixing Box Recirculating Units Energy Savings Mode 1 will automatically disable the burner if the mixed air temperature is equal to or greater than the minimum discharge air temperature setpoint and the room air temperature is 5 F above the room air temperature setpoint This function is intended to restrain the room temperature from rising uncontrollably in buildings MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 13 e TRANE Ventilation Mode 14 Unit Operating Modes with internal heat gain In certain conditions it may be necessary to readjust the minimum discharge air or room temperature setpoint upward or adjust the outs
63. r to maintain a constant pressure within the space A pressure transducer compares the pressure outside the space to the pressure inside the space and transmits a corresponding signal to the AdaptAire controller The controller compares this signal to the desired building pressure setpoint and uses a PID loop to modulate the outside air and return air dampers to maintain the specified building pressure MDT and MRT Controls The MDT and MRT control systems do not support building pressure control mode MRT Pro Controls To change the damper mode on an MRT Pro control system requires the use of a BACview or PC See the section related to the MRT Expert for instructions on how to use the BACview for programming MRT Expert Control To place the damper operation in Building Pressure Mode scroll through the menu tree locate the Damper Mode branch and select Bldg Prs Ctrl Next scroll through the menu tree locate the Setpoints branch select Bldg Prs and enter the desired pressure The allowable range is 0 05 wc to 40 05 wc If the unit served by this control is a direct fired heater that recirculates air before the burner and is operating in the heating mode the unit will automatically keep the minimum outside air at 2096 If the outside air drops below 2096 the burner will cycle off See Minimum Ventilation Direct Fired Indoor and Outdoor Units MUA SVPO1A EN TRANE Functions 100 Outside Air The 100 Outside Air function
64. red Indoor and Outdoor Units 21 e TRANE REVERSE ACTING 22 Functions Figure 2 Direct acting Max User SP 80 F 100 override scaler 75 F 0 User Ctrl SP 75 F PID 0 100 0 100 Output 75 F 100 override scaler Min User SP 70 F 0 The controller output AO 1 is modulated by a PID loop from 0 to 100 based on the User Control setpoint and the input signal to IN 9 As the input signal increases the output voltage decreases Additionally a secondary control acts to override the PID loop to scale the output as follows If the input variable equals the User Control setpoint the output will be determined by the PID loop In this situation the override has no effect on the output value If the input variable is above the User Control setpoint the output could decrease from 100 to 0 as the input variable increases from the User Control setpoint to the Max User setpoint In this situation the output value is the lesser of the PID output or the override output If the input variable is below the User Control setpoint the output could increase from 0 to 100 as the input variable decreases from the User Control setpoint to the Min User setpoint In this situation the output value is the greater of the PID output or the override output See the following example Assume the user wishes to control the fan speed using a variable frequency drive VFD The VFD input is 0 10Vdc The control variable will b
65. roller See the section related to the MRT Expert for instructions on how to use the BACview for programming Heating Night Setback The Heating Night Setback function automatically cycles the unit on if the room temperature falls below the Heating Night Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled to be off and the Heating Night Setback function turns the unit on the unit will be cycled off once the room air temperature has risen 2 above the Heating Night Setback setpoint The default for this setpoint is 55 F and is fixed at 10 below the Heating setpoint Changing the Heating setpoint changes the Heating Night Setback setpoint Cooling Night Setback The Cooling Night Setback function automatically cycles the unit on if the room temperature rises above the Cooling Night Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled e TRANE Unit Operating Modes to be off and the Cooling Night Setback function turns the unit on the unit will be cycled off once the room air temperature has fallen 2 below the Cooling Night Setback setpoint The default for this setpoint is 100 F and is fixed at 27 above the Cooling setpoint Changing the Cooling setpoint changes the Cooling Night Setback setpoint Auxiliary Unit Enable The Auxiliary Unit Enable function overrides all other Auto Mode functions and automatically cycles the unit into operatio
66. sgiving and Christmas when the units will be Off However they will run each weekday during the Thanksgiving shutdown from 8 00 AM until noon while a maintenance crew is in the building AdaptAire has no preset operational schedule To set the time clock function for 24 hour continuous operation scroll through the menu tree and locate the SCHEDULES page Set the 24 Hr Operation to yes Enter the Daily section of the menu and set the Use tab to yes Finally select the days for 24 hour operation To set the operational times of the unit scroll through the SCHEDULES menu tree and locate the desired Daily Holiday or Override branch Enter the days and times for the unit to operate In the Daily or Override section these times should correspond to the desired on times for the unit s operation In the Holiday section these times should correspond to the desired off times for the unit s operation See the CLOCK SET section of this manual for setting the time date and Daylight Savings function Heating Night Setback The Heating Night Setback function automatically cycles the unit on if the room temperature falls below the Heating Night Setback temperature setpoint and the unit is scheduled to be off If the unit is scheduled to be off and the Heating Night Setback function turns the unit on the unit will be cycled off once the room air temperature has risen 2 above the Heating Night Setback setpoint The default for this setpoint is
67. side Air Economizer 65 F 40 F 80 F Setpoint Minimum Discharge 55 F 40 F 130 F Temperature Setpoint Maximum Discharge 100 F 55 F 130 F Temperature Setpoint Mixed Air Temperature 50 F 30 F 90 F Setpoint Building Pressure Setpoint 0 W C 0 05 0 05 W C Manual Damper Position Setpoint 2096 Outside Air 096 10096 Minimum Ventilation Setpoint User PID Select 2096 Outside Air Direct Acting 096 10096 DIRECT REVERSE High Input Value 0 9999 99 99999 99 MUA SVPOIA EN Direct Fired Indoor and Outdoor Units e TRANE Table 1 Default settings continued ITEM DEFAULT RANGE Low Input Value 0 9999 99 99999 99 User Control Setpoint 0 9999 99 99999 99 Maximum User Setpoint 0 9999 99 99999 99 Minimum User Setpoint 0 9999 99 99999 99 Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE MUA SVP01A EN Contents NETWORKING ket teer ERES aA De bea wu Ra a deca 3 ADAPTAIRE DEFAULT SETTINGS 0 00 cc anaana aa 3 Unit Operating Modes 7 MDT CONOIS etic hed dud atit vado det aad koa a 7 MRT Controls usos Lore ss hot Sean ead e Nux T e p Kosa ae ied 8 MRT Pro Controlsz lc bise Sk ee aee a we ra ew ed 8 MRT Expett Controls 25 ser 10 Heating Ventilating Cooling Operating Modes 12 Heating
68. te input signal A contact closure between the appropriate terminals on the unit s terminal strip located in the unit s main control panel will drive the output to 100 See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information The controller output is modulated by a PID loop from 0 to 100 based on the User Control setpoint and the input signal As the input signal increases the output voltage increases Additionally a secondary control acts to override the PID loop to scale the output as follows If the input variable equals the User Control setpoint the output will be determined by the PID loop In this situation the override has no effect on the output value If the input variable is above the User Control setpoint the output could increase from 0 to 100 as the input variable increases from the User Control setpoint Direct Fired Indoor and Outdoor Units MUA SVPO1A EN e TRANE Functions to the Max User setpoint In this situation the output value is the greater of the PID output or the override output If the input variable is below the User Control setpoint the output could decrease from 100 to 0 as the input variable decreases from the User Control setpoint to the Min User setpoint In this situation the output value is the lesser of the PID utput or the override output See the following example Assume the user wishes to control a chilled water valve using a temperature
69. the fan status relay energized Yes There is a short or jumper in the wiring Determine cause and rectify No Continue Is the fan status relay s normally open contact closed Yes Replace relay No Continue Is there continuity between at the controller between the fan status terminals Yes There is a short in the wiring between these terminals Determine cause and rectify No Replace controller SOLUTION If fan is not running 1 Is the fan status relay s normally open contact closed Yes Replace relay No Continue Is there approximately 5VDC at both controller terminals used for the fan status MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 33 e TRANE Diagnostics Yes There is a short in the wiring between these terminals Determine cause and rectify No Replace controller FAULT CODE Unit on Fan off PROBLEM The controller has activated the unit enable output to start the fan but the fan status input is not receiving a signal thatthe fan is running This fault will automatically clear about 60 seconds after the fault is corrected Turning the unit off and then on will clear this fault at any time 34 SOLUTION If fan motor is running 1 Is the BACview remote indicating an alarm Yes Check previous alarms and continue bContinue Is the motor starter s normally open auxiliary contact closed No Replace contact Yes Continue Are the hig
70. tify Yes Continue Is the burner enable relay s normally open contact closed No Replace relay Yes Continue Is there a pilot flame present No Refer to the Installation Operation and Maintenance Manual for guidance in troubleshooting the flame relay or ignition module Yes Continue Is the flame relay or ignition module main valve terminal energized No Refer to the Installation Operation and Maintenance Manual for guidance in troubleshooting the flame relay or ignition module Yes Continue Is the gas valve burner status relay energized No There is an open in the main valve control circuit Determine cause and rectify Yes Continue Is the gas valve burner status relay s normally open contact closed No Replace relay Yes Continue Is there continuity at the controller between the burner status terminals No There is an open in the wiring between these terminals Determine cause and rectify Yes Replace controller FAULT CODE Bumer Hand PROBLEM The controller has not activated the bumer enable output but the bumer status input is receiving a signal that the bumer is on SOLUTION Inspect bumer control circuit This fault has the potential to be a very serious problem Close the manual gas valves immediately if the fan is not running Is the controller s burner enable output LED lit Yes Close manual gas valves There is a problem with the controller program C
71. tinuous minutes There is an initial 8 minute delay prior activation on recirculating units and an initial 6 minute delay on non recirculating units The Freezestat function prevents the unit from starting The default for this setpoint is 45 F To change the Freezestat setpoint scroll through the menu tree locate the Setpoints branch select Freezestat SP and enter a new temperature The allowable temperature range is 35 F 50 F Clogged Filter An optional clogged filter switch is required for this function The Clogged Filter function automatically notifies the user of a dirty filter condition A Clogged Filter indication will appear on the remote panel or local user interface This function is activated whenever a contact is closed between the appropriate terminals on the unit s terminal strip located in the unit s main control panel See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 19 e TRANE Functions User Configured PID Control DIRECT ACTING 20 This function is applicable to non recirculating units only The User Configured PID Control function allows the user to control an analog output based on a user defined analog input and setpoint See the Typical Wiring and Unit Controller Specification sections of this manual for more information regarding the inputs and outputs This function also allows the user to select
72. trol does not support the time clock night setback or auxiliary unit enable functions e TRANE MRT Controls Unit Operating Modes MRT modulating room temperature is the most basic AdaptAire control for room temperature The MRT control system includes a remote control panel equipped with 1 or 2 potentiometers 3 or more pilot lights and up to 2 switches UNIT OFF MODE Off Mode is the default unit operational mode To place the unit in Off Mode rotate the temperature setpoint knob on the remote control panel counterclockwise to the stop This will place the unit in the OFF mode and extinguish the unit enable light The OFF mode prevents the unit from starting UNIT MANUAL MODE Manual Mode allows the unit to turn on To place the unit in Manual Mode rotate the temperature setpoint knob on the remote control panel clockwise to the desired room temperature setpoint This will place the unit in the MANUAL mode The burner will be enabled if the room air temperature is 2 below the room temperature setpoint and will be deactivated when the room air temperature is above the room temperature setpoint The cooling output will be enabled if the room air temperature is 2 above the room temperature setpoint and will be deactivated when the room air temperature is below the room temperature setpoint UNIT AUTO MODE Auto Mode has four different functions that control the unit operation They are a time clock heating and cooling
73. ult is not Sou Hem For you convenience Daylight Saving Time has been preprogrammed for the next several years To reset the starting and ending DST dates scroll through the DST menu tree locate the desired year and enter a new date MUA SVPOIA EN Direct Fired Indoor and Outdoor Units 25 TRANE Diagnostics Critical Fault Codes This section should assist the user in troubleshooting critical fault codes messages that have been displayed on the local user interface These faults require the operator to correct the condition and reset the alarm before normal unit operation resumes FAULT CODE Low Discharge Temperature PROBLEM The controller has detected a low temperature at the fan outlet and has shut off the unit See Freezestat section of this manual SOLUTION If burner was operating prior to shutdown check prior alarm log l 15 the outside air OA Temp or room air Room Temp displayed on the BACview remote reading 150 F or more Yes That sensor circuit or the sensor itself is shorted Unplug the input jack from the AdaptAire controller Did the display change to 40 F or less No There is a short in the controller input Replace the controller Yes Disconnect the sensor wiring at the sensor Connect an ohmmeter to the sensor If it is shorted replace the sensor At 77 the resistance should be 10K See thermistor output curve for other temperatures If itis not shorted there is a short in the wiring b
74. ypical 10K thermistor output curve No Continue Is the discharge air temperature DA Tempt displayed on the BACview remote reading 40 F or less Yes The discharge air temperature sensor circuit or the sensor itself is open J umper the input for the sensor Did the display change to 150 F or more No There is an open in the controller input Replace the controller Yes Disconnect the discharge air temperature sensor wiring at the sensor Connect an ohmmeter to the sensor If it is open replace the sensor At 70 F the resistance should be 10K See thermistor output curve for other temperatures If it is not open there is a break in the wiring between the sensor and the input plug Determine cause and rectify No Continue Reset the alarm Check and note the DC voltage at controller s analog output for the heating signal Set the Heating Setpoint for 90 F Set the HTG MAX DA and MIN DA Setpoints for 130 F Did the Burner VDC displayed on the BACview remote increase No Unless the outside air temperature is extremely warm the Burner VDC should have increased to 75VDC or more Close the manual main gas valve closest to the burner and measure the discharge air temperature Is it less than 130 F Yes There is a problem with the controller program or controller itself Contact the factory No The outside air temperature is too hot to determine the actual cause of the problem Reset the alarm and r

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