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Trane HUVC Horizontal Classroom Unit Ventilator Catalogue

1. AIlImP Z 18 Digit 12 13 Coil Letter Designation Single Coil Options 2R 12FPI CW HW Changeover 2R 16FPI CW HW Changeover AC 12 CW HW Changeover 4R 12 CW HW Changeover AE 4R 16 FPI CW HW Changeover H1 1R 12 FPI Heating Coil H2 1R 14 FPI Heating Coil 16 FPI Heating Coil H4 2R 12 FPI Heating Coil H5 2R 14 FPI Heating Coil 2R 16 FPI Heating Coil K1 1R Low Capacity Steam Coil K2 1R High Capacity Steam Coil E4 4Element Heating Only Coil E6 6Element Heating Only Coil E8 8 Element Heating Only Coil GO 2R 12 FPI DX Coil Coupled Coil Options DA 1R 12 FPI HW Coil with 2 R 12 FPI CW Coil DC 1R 2 HW Coil with 2 R 14 FPI CW Coil DD 1R 12 HW Coil with 12 FPI CW Coil DE 1R 14 FPI HW Coil with R 14 FPI CW Coil DK 1R Steam with 3 R CW Coil 3 Element Elec Coil with 3 R CW Coil 2 R on Sz 125 X4 4Element Elec Coil with 3 R CW Coil 2 R on Sz 125 6 Element Elec Coil with 3 R CW Coil 2 R on Sz 125 GK 1R Steam Coil with 2 R DX Coil GA 1 R Heating coil with 2 R DX Coil G3 3Element Elec Heat Coil with 2 R DX Coil G4 4Element Elec Heat Coil with 2 R DX Coil G6 6 Element Elec Heat Coil with 2 R DX Coil R1 12 FPI CW Coil with 1 R 12 FPI HW Coil R2 14 FPI CW Coil with 1 R 12 FPI HW Coil Digit 14 Coil Connections A Right Hand Supply
2. BOTTOM DISCHARGE 22 ISO VIEW WHEN ELECTRIC HEAT IS PRESENT ALL POWER CONNECTIONS ARE MADE INTHE RIGHT HAND END POCKET ON ALL OTHER CONFIGURATIONS POWER CONNECTIONS ARE MADE INTHE LEFT HAND END POCKET UV PRC004 EN 57 S TRANE Dimensional Data Inlet Discharge Arrangements INLET ARRANGEMENT UNIT SIZE 075 150 3 4 gt 4 3 4 14 314 LE ES i it DIGIT 20 A l 4 DIGIT20 B 5 8 DIGIT 20 C FA DUCT TOP with 11 34 FADUCTTOP with i4 17 8 with RA DUCT LOWER BACK RA DUCT BOTTOM RA BAR GRILLE BOTTOM DIGIT 20 D FA DUCT TOP with 4314 i RA OPEN BOTTOM Er TT Y im Te 5 DIGIT 20 E DIGIT 20 F 1 4 DIGIT 20 6 100 DUCTTOP DUCT UPPER BACK with lt 3 4 DUCT UPPER BACK with ic RA DUCT LOWER BACK RA DUCT BOTTOM T 5 B 17 8 DIGIT20 H DIGIT 20 K DUCT UPPER BACK with RA BAR GRILLE BOTTOM DIGIT20 J FA DUCT UPPER BACK with RA OPEN BOTTOM 5 8 ae DIGIT 20 M dl 7 8 100 RA DUCT BOTTOM DISCHARGE ARRANGEMENT UNIT SIZE 075 150 L 1 4 1 2 DIGIT 21 1 BAR GRILLE DISCHARGE 7 1 8 77 8 4 DIGIT 21 2 DUCT COLLAR DISCHARGE 7 1 8 FROM TOP 7 7 8 3 4 DIGIT 21 3 DUCT COLLAR DISCHARGE 3 4 FROM TOP 58 100 FA DUCT UPPER BACK Hoo DIGIT 20 L 100 RA DUCT LOWER BACK ake DIGIT 20
3. from Top 5 FrontDouble Detflection Grille Discharge 6 Front Double Deflection Opening Only no grille 7 Bottom w Double Deflection Grille Digit 22 Unit Access Panel 0 Std Horizontal Access Panel 1 Safety Chain Std Access Panel 2 Removable Access Panel 3 Safety Chain Removable Access Panel Digit 23 Recessing Flange 0 No Recessing Flange 1 Standard Recessing Flange UV PRC004 EN Wireless Display Sensor H L A O FA Duct Top RA Duct Lower Back FA Duct Top RA Bar Grille Bottom FA Duct Upper Back RA Bar Grille 100 RA Open Bottom no grille Digit 24 Piping Package No Factory Installed Piping Package Package 1 Standard Package Package 2 Standard Package w Circuit Setter Package 3 Standard Package w Strainer and Circuit Setter Digit 25 Filter 1 Throwaway Filter 2 MERV 8 Filter 3 MERV 13 Filter Digit 26 Color Selection Deluxe Beige Cabinet Cameo White Cabinet Soft Dove Cabinet Stone Gray Cabinet Driftwood Gray Cabinet A C D gt Q NS l H H H I Digit 27 Motor Disconnect No Disconnect Non Fused Toggle B Circuit Breaker Digit 28 Control Accessories 0 None A C02 Sensor B Wall Mounted Relative Humidity Sensor Model Number Descriptions 19 TRANE General Data Discharge and Inlet Arrangements Discharge Arrangement Digit 212 1 Digit 2124 1 Bar Grille Dischar
4. TRANE Product Catalog Horizontal Classroom Unit Ventilator 750 cfm to 2000 cfm February 2013 UV PRC004 EN TRANE Introduction Trane Horizontal Classroom Unit Ventilator Painted End Cover Z Unit Top Casing FA Ducted Back j Galvanized lt Fan Board Z 2 Pipe Hydronic Fan Housing Coil Painted 2 di End Cover Motor and Mounting Filter lt lt Removable E Drain Pan A Classroom Choice in HVAC Classroom unit ventilators have been cost effective way to heat and cool schools for over half a century Many schools choose classroom unit ventilators because of their ability to heat cool and ventilate as well as their durable cabinet design and small foot print Because the unit ventilator is a single space system one unit installed in the classroom handles only that room s airflow thus minimizing the potential for cross contamination between classrooms The ceiling hung ducted horizontal unit ventilator may provide benefits in sound sensitive applications The horizontal equipment can be located above the ceiling and away from direct contact with students They may also be located in a corridor or mezzanine then ducted into the classroom Properly designed supply and return air ducts can help attenuate HVAC equipment and air noise Locating the units outside of the classroom can also improve access and serviceability of t
5. 10 30 13 63 134 10 6 71 4 30 770 DD 1895 60 89 42 37 12 14 9 82 116 70 5 83 3 30 770 DE 1770 65 04 43 44 12 96 11 49 127 70 6 38 3 90 770 28 UV PRC004 EN Performance Data H X Coils AHRI Cooling performance is based on 80 67 F entering air temperature 45 F entering chilled water temperature with a 10 F AT Heating performance is based on 70 F entering air temp 180 F entering water temperature with a 40 F AT All performance measured on high speed tap 115 V Free discharge units 0 0 ESP with throwaway filter High static units 0 20 ESP without filter Table 15 2 Pipe coil HW data Heating Total Capacity Flow Rate WPD HUV Size Coil Type MBh gpm ft H20 H1 41 18 2 06 2 85 H2 45 12 2 26 3 36 075 H3 48 74 2 44 3 86 H4 53 49 2 67 0 70 H5 57 95 2 90 0 81 H6 61 84 3 09 0 91 H1 52 90 2 65 0 97 H2 57 98 2 90 1 15 100 H3 62 65 3 13 1 33 H4 71 90 3 59 1 41 H5 77 92 3 90 1 63 H6 83 19 4 16 1 84 H1 66 45 3 32 1 67 H2 72 85 3 64 1 98 125 H3 78 73 3 94 2 28 H4 90 36 4 52 2 45 H5 97 97 4 90 2 83 H6 104 61 5 23 3 19 H1 99 89 4 99 2 70 H2 124 35 6 22 4 03 150 H3 131 66 6 58 4 48 H4 108 87 5 44 3 88 H5 118 05 5 90 4 49 H6 126 08 6 30 5 05 H1 120 35 6 02 3 80 H2 152 05 7 60 5 84 200 H3 161 68 8 08 6 54 H4 132 52 6 63 5 52 H5 144 37 7 22 6 44 H6 154 87 7 74 7 32 Table 16 X coils 2 pipe with free discharge EC motor Cooling Total S
6. 136 30 6 81 4 45 Table 18 R1 R2 DK coils 4 pipe with free discharge EC motor cooling data Cooling Total Sensible Capacity Capacity Flow Rate WPD Unit Size Coil Type MBh MBh gpm ft H20 R1 26 73 18 60 5 33 3 85 075 R2 26 81 18 21 5 34 3 87 DK 17 47 13 97 3 48 1 27 R1 32 41 21 82 6 46 6 49 100 R2 34 38 22 76 6 85 7 21 DK 23 03 16 94 4 59 2 47 R1 41 81 29 35 8 33 4 46 125 R2 46 51 31 39 9 27 5 40 DK 33 47 24 34 6 67 5 55 R1 50 24 34 23 10 01 6 96 150 R2 54 23 35 59 10 81 7 98 DK 40 17 28 34 8 01 8 71 R1 62 56 43 67 12 47 10 31 200 R2 67 07 44 90 13 35 11 67 DK 48 70 35 47 9 71 12 26 30 UV PRCOO4 EN Performance Data DX Coils Table 19 R 410A cooling only HUV S Btu hr Unit Size Condensing Unit EWB F T Btu hr b EDB 729 EDB 76 F EDB 80 F 075 4TTB3018 63 18865 12052 15467 18574 67 19919 7972 11532 15060 71 21029 3638 7170 10878 4TTB3024 63 23108 13307 16931 20805 67 24057 9023 12633 16291 71 25428 4477 7832 11784 100 4TTB3024 63 24820 15965 20784 24543 67 26117 10448 15251 19950 71 27544 4735 9536 14353 4TTB3030 63 28395 17201 21904 26087 67 29886 11643 16360 21069 71 31529 5709 10447 15301 125 4TTB3030 63 30441 19769 25504 30266 67 31903 12951 18875 24723 71 33583 5690 11569 17730 4TTB3036 63 35117 21393 27320 32571 67 36701 14277 20254 26132 71 38881 6927 13004 19506 150 4TTB3036 63 36851 23892 31008 36531 67 38641 15616 22735 29964 7
7. 24 34 23 10 01 6 96 103 70 5 19 2 70 221 DE 1485 54 23 35 59 10 81 8 28 112 30 5 61 3 10 221 DA 1970 49 82 38 66 9 93 12 77 119 80 5 99 3 50 311 200 DC 1885 52 99 38 79 10 59 14 25 133 60 6 68 4 30 311 DD 1885 62 56 43 67 12 47 10 31 116 20 5 81 3 30 311 DE 1785 67 01 44 90 13 35 12 13 128 50 6 43 4 00 311 Table 14 D coils 4 pipe with high static EC motor Cooling Heating Total Sensible Total Motor Airflow Capacity Capacity Flow Rate WPD Capacity FlowRate WPD Power Size Coil Type cfm MBh MBh gpm ft H20 MBh gpm ft H20 W DA 755 16 75 13 68 3 34 1 18 48 50 2 43 0 50 198 075 DC 740 17 99 13 99 3 59 1 34 54 40 2 72 0 60 198 DD 740 25 33 17 57 5 05 3 50 47 80 2 39 0 50 198 DE 795 28 38 19 35 5 66 4 28 57 50 2 87 0 70 198 DA 1085 27 68 21 10 5 52 3 42 69 00 3 45 1 10 287 100 DC 1055 29 55 21 60 5 89 3 84 77 40 3 87 1 30 287 DD 1055 38 03 25 97 7 58 8 61 67 70 3 39 1 00 287 DE 1005 38 15 25 45 7 60 8 66 73 30 3 66 1 20 287 DA 1220 33 80 25 85 6 74 5 65 80 70 4 03 1 50 305 125 DC 1350 39 46 28 79 7 86 7 43 99 20 4 96 2 30 305 DD 1350 45 76 32 35 9 12 5 24 86 70 4 34 1 80 305 DE 1295 49 25 33 38 9 81 6 23 96 20 4 81 2 10 305 DA 1445 36 80 27 22 7 33 7 46 96 50 4 83 2 30 357 150 DC 1715 43 12 30 52 8 59 9 88 124 80 6 24 3 80 357 DD 1715 49 93 34 00 9 95 6 88 108 90 5 45 2 90 357 DE 1635 53 07 34 77 10 58 7 97 120 60 6 03 3 50 357 DA 1990 48 96 37 88 9 76 12 38 120 60 6 03 3 50 770 200 DC 1895 51 69 37 68
8. 88 13 70 8 24 168 10 8 40 3 10 770 UV PRC004 EN 27 S TRANE Performance Data D Coils AHRI Cooling performance is based on 80 67 F entering air temperature 45 F entering chilled water temperature with a 10 F AT Heating performance is based on 70 F entering air temp 180 F entering water temperature with a 40 F AT All performance measured on high speed tap 115 V Free discharge units 0 0 ESP with throwaway filter High static units 0 20 ESP without filter Table 13 D coil 4 pipe with free discharge EC motor Cooling Heating Total Sensible Total Motor Airflow Capacity Capacity Flow Rate WPD Capacity Flow Rate WPD Power Size Coil Type cfm MBh MBh gpm ft H20 MBh gpm ft H20 W DA 815 18 16 14 82 3 62 1 36 51 20 2 56 0 50 135 075 DC 780 19 20 14 93 3 83 1 50 56 70 2 83 0 70 135 DD 780 26 73 18 60 5 33 3 85 49 70 2 48 0 50 135 DE 760 26 81 18 21 5 34 3 87 55 60 2 78 0 60 135 DA 1025 24 21 18 20 4 83 2 70 66 30 3 32 1 00 180 100 DC 975 24 95 17 96 4 97 2 84 73 00 3 65 1 20 180 DD 975 32 41 21 82 6 46 6 49 64 00 3 20 0 90 180 DE 1015 34 38 22 76 6 85 7 21 73 90 3 69 1 20 180 DA 1290 34 12 26 13 6 80 5 74 84 00 4 20 1 70 191 125 DC 1240 36 25 26 17 7 22 6 40 93 10 4 66 2 00 191 DD 1240 41 81 29 35 8 33 4 46 81 60 4 08 1 60 191 DE 1265 46 51 31 39 9 27 5 62 94 50 4 73 2 10 191 DA 1510 40 06 29 98 7 98 8 67 99 60 4 98 2 50 221 150 DC 1600 43 37 30 73 8 64 9 98 118 60 5 93 3 40 221 DD 1600 50
9. B LeftHand Supply LeftHand Cool Right Hand Heat D Right Hand Cool Left Hand Heat Digit 15 Control Types Unit Mounted Speed Switch Tracer ZN520 Tracer ZN520 w Low Temp Tracer ZN520 w Time Clock Tracer ZN520 w Low Temp amp Time Clock Tracer ZN520 ICS w Fan Status Tracer ZN520 ICS w Low Temp amp Fan Status CSTI CSTI w Low Temp Tracer UC400 Tracer UC400 w Time Clock Digit 16 Heating Change Over Coil Control 0 None 1 Face amp Bypass Damper Actuator 2 2 Pipe Face amp Bypass Damper Control 3 4 Pipe Face amp Bypass Damper Control amp Isolation Valve Single Stage Electric Heat Control Dual Stage Electric Heat Face amp Bypass Damper w 2 Pipe Control amp Isolation Valve 2 Way 1 2 in 3 3 CV 3 Wire Mod 2 Way 1 2 in 1 9 CV 3 Wire Mod 2 Way 3 4 in 4 7 CV 3 Wire Mod 2 Way 1 in 6 6 CV 3 Wire Mod 3 Way 1 2 in 1 9 CV 3 Wire Mod 3 Way 1 2 in 3 8 CV 3 Wire Mod 3 Way 3 4 in 6 6 CV 3 Wire Mod Steam 3 Wire Mod 1 2 in 1 9 CV Steam 3 Wire Mod 1 2 in 4 7 CV Steam 3 Wire Mod 3 4 in 8 6 CV it 17 Cooling Coil Control None Single Stage DX Controls Field Supplied Analog Valves 2 Way 1 2 in 1 9 CV 3 Wire Mod 2 Way 3 4 in 4 7 CV 3 Wire Mod 2 Way 1 in 6 6 CV 3 Wire Mod 3 Way 1 2 in 1 5 CV 3 Wire Mod 3 Way 1 2 in 3 8 CV 3 Wire Mod 3 Way 3 4 in 6 6 CV 3 Wire Mod Digit 18 Damper Configuration 0 Field Installed Damper Actuator 1 100 Return Air No
10. Damper or Actuator ASHRAE Cycle II RA OA Damper and Actuator 2 10 Vdc RA OA Damper and Actuator 3 Point Modulating E RA OA Damper and Actuator with Exhaust 3 Point Mod Two Position Control D Damper w Manual Quad Adjust lt x cCuHAwWOO H Il lt m l H H Il lt Nos DONIODSS O l H H H H gn H H I A UV PRC004 EN Digit 19 Zone Sensor Fan Speed Switch No Sensor Unit Mounted Fan Speed Switch J Wall Mt Zone Sensor OALMH Setpoint Dial On Cancel K Wall Mt Zone Sensor OALMH Setpoint Dial L UNIT Mt Zone Sensor OALMH Setpoint Dial Wall Mount Display Sensor w Setpoint Adjust P Wall Mt Sensor Setpoint dial On Cancel w Unit Mt Speed Switch Q Wall Mt Sensor Setpoint Dial w Unit Speed Switch Wireless Sensor Ext Adjust Digit 20 Inlet Arrangement FA Duct Top RA Duct Bottom FA Duct Top RA Open Bottom 100 FA Duct Top FA Duct Upper Back RA Duct Lower Back FA Duct Upper Back RA Duct Bottom T TI Q O gt lI I Bottom FA Duct Upper Back RA Open Bottom no grille 100 FA Duct Upper Back 100 RA Duct Lower Back 100 RA Duct Bottom 100 RA Bar Grille Bottom c 022 Hu H H H I Digit 21 Discharge Arrangement 1 Bar Grille Discharge 2 Duct Collar Discharge 7 1 8 in from Top 3 Duct Collar Discharge 3 4 from Top 4 DuctCollar Discharge 3 5 8 in
11. Hydronic piping for the unit ventilator may be factory installed or field provided It fits painlessly inside the unit end pockets permitting quick hook up during the installing phase The motorized valves include a trouble free pop top actuator allowing the maintenance or service technician access to the motor without removing the valve body from the piping package Coils Through the various coil combinations offered by Trane room conditions can be met Two pipe and four pipe combinations are available to support any application Coil selections include hydronic steam direct expansion DX and electric For heating coils Trane provides steam hot water and electric options Cooling coils are available as cold water and DX Access to the coil for cleaning purposes is fundamentally one of the greatest features Trane provides as part of the equipment Maintaining a clean coil inherently increases the efficiency adds to the life of the equipment and helps to maintain proper indoor air quality Outside Return Air Damper Design The outside return air OA RA damper is a dual blade system to ensure proper modulation and mixing of the air to 840 economizing standards The optional outside air actuator is spring return The spring return system closes the OA damper if power is lost to the building and provides for a positive seal This helps inhibit over cooling or freeze up of the system during electrical outages or system shut down
12. Wireless temperature sensors which provide easy and flexible installation are a cost effective alternative to wired sensors Some additional options available with the sensors include Easy to use display interface for clear and simple monitoring and control Temperature setpoint control to allow the tenant to choose a temperature setpoint that satisfies their personal preference Fan speed switch to allow the tenant to locally control the fan speed to better satisfy their preference Occupancy override to allow the tenant to request temporary timed override system operation that keeps the building conditions in occupied comfort conditions COMM module that is compatible with all Trane wired temperature sensors This accessory provides a local RJ22 connection to Trane service tools for easy low cost maintenance Factory Mounted Piping option Factory mounted piping is available when selecting Trane controls or Customer Supplied Terminal Interface CSTI Packages are available in 2 way or 3 way configurations with a 3 point floating valve piped to the return side of the coil Packages are leak tested to 90 psig to ensure joint integrity Units equipped with a standard throwaway filter have an average resistance of 76 percent and dust holding capacity of 26 grams per square foot Units equipped with 1 in MERV 8 filters have a rating based on ASHRAE Standard 52 2 The average dust spot efficiency is no less than 35 to 40 perce
13. a single source power connection requirement to the unit All wall mounted zone sensors require only low voltage control wiring from the device to the unit control box No line voltage The controller automatically determines the unit s correct operating mode heat cool by utilizing a proportional integral control algorithm to maintain the space temperature at the active setpoint allowing total comfort control Entering water temperature sampling eliminates the need for inefficient bleedlines to sense automatic changeover on two pipe changeover units The random start up feature helps reduce electrical demand peaks by randomly staggering multiple units at start up Occupied unoccupied operation allows the controller to utilize unoccupied temperature setpoints for energy savings Warm up and cool down energy features are standard with Trane controls To customize unit control Tracer TU or Rover software will allow field modification of Tracer ZN520 default settings Tracer UC400 uses Tracer TU Maximize system efficiency with free cooling economizers and modulating valves on units with Tracer ZN520 and Tracer UC400 Trane offers a broad range in control packages to fit both retrofit and new applications From the field convertible end device package to a complete building automation system Trane controls integrate the highest quality components within their unit ventilator to allow greater optimization of the entire sys
14. box contains a line voltage to 24 volt transformer EC motor controller and an optional disconnect switch Tracer 7 520 The Tracer ZN520 discrete speed controller can be used in a stand alone application or used as part ofa Trane Integrated Comfort System ICS with LonTalk communication The Tracer ZN520 offers the combined advantages of simple and dependable operation Standard control features include options normally available on more elaborate control systems All control options are available factory mounted wired and configured and can also be field configured using a service tool Tracer UC400 The Tracer UC400 controller delivers single zone control in a stand alone application or as part of a Trane Integrated Comfort system with BACnet communication The Trace UC400 offers the combined advantages of a factory mounted wired and programmed controller for dependable out of the box operation Standard control features include options normally available on more elaborate control systems All control options are available factory programmed with additional configuration and programming in the field using a service tool Zone Sensors option Trane offers a full line of wired and wireless temperature sensors Wired temperature sensors are the suitable alternative for locations that cannot accommodate wireless sensors or that require a 63 TRANE Mechanical Specifications Filter 64 service tool connection
15. contactors for electric heat units and an optional disconnect switch All end devices are wired to a low voltage terminal block and are run tested so the only a power connection and thermostat connection is needed to commission the unit Changeover sensors and controls are provided whenever a change over coil is selected When N O valves are selected inverting relays are provided for use with standard thermostats adapter board provides all the hookups of the standard adapter board but in addition provides hookups for valve control main and auxiliary coils electric heat control and damper control Screw terminal blocks provide convenient access to fan controls and to end device control In addition acourtesy 10 Vdc supply is provided for use with an external potentiometer or rheostat The 10 supply supports up to 10 mA draw UV PRCOO4 EN TRANE Controls Tracer ZN520 Tracer ZN520 Zone Controller Features Include e Automatic fan speed reset Automatic ventilation reset e Active dehumidification e Manual output test e Filter maintenance e Master slave e Water valve override e Freeze avoidance e Interoperability Three generic I O ports The Tracer ZN520 is a factory installed tested and commissioned LonTalk control designed to provide control of the classroom unit ventilator and the fan coil products see Figure 12 Figure 12 Tracer ZN520 control board GENERIC WER sre S
16. e Lower operating costs on average of 50 percent versus a PSC motor e The Reduced FLA feature allows units to ship with a nameplate FLA rating much lower than a typical ECM unit Electronically Commutate Motor ECM The fan motor is a variable speed electronically commutated motor with overload protection The motor is wired to either termination board so the unit can be control with either three fan speeds Vdcto 10 The motor speed is not affected by damper positions Standard motors are rated up to 0 25 ESP external static pressure High static motors are rated from 0 25 ESP to 0 45 ESP Bearings for the motor are permanently lubricated requiring little maintenance over the lifetime of the equipment Figure 2 Fan motor The motor is removable without complete disassembly of the fan board Simply remove the two motor quick connects and loosen the shaft coupling Filter Filters for the horizontal unit ventilator are of 1 inch throwaway MERV 8 or MERV 13 They are shipped with the equipment for installation start up purposes Extra filters may be ordered separately for maintenance of the equipment UV PRCOO4 EN UV PRC004 EN Features Benefits Drain Pan The unit drain pan is positively sloped to assure proper drainage The pan is insulated on the bottom to help prevent condensate formation The pan is simple to remove for cleaning purposes by loosening two front screws Piping
17. protection works as follows As the temperature drops below the solution s freeze point ice crystals begin to form Because the water freezes first the remaining glycol solution is further concentrated and remains fluid The combination of ice crystals and fluid make a flowable slush The volume increases as this slush forms and flows into the available expansion volume usually an expansion tank When a sufficient concentration of glycol is present no damage to the system will occur Freeze protection is required in cases where no ice crystals can be permitted to form or where there is inadequate expansion volume available HVAC systems intended to start up in cold weather after prolonged winter shutdowns may require freeze protection Table 27 is provided by Dow Chemical Co for its ethylene and propylene glycol products Table 27 Percentage volume glycol concentration For Freeze Protection For Burst Protection Temperature F Ethylene Glycol Propylene Glycol Ethylene Glycol Propylene Glycol 20 16 17 11 11 10 25 26 17 18 0 33 34 22 23 10 39 41 26 28 20 44 45 30 30 30 48 49 30 33 40 52 51 30 35 50 56 53 30 35 60 60 55 30 35 UV PRC004 EN Table 27 shows that a 30 percent ethylene glycol solution is enough to protect a system down to 60 F Because of the benefits of burst protection excessive glycol only degrades the heat transfer and increases the pressure drop of the fluid without p
18. suited for fix on fail replacement of units with old pneumatic controllers or in situations where a BAS will be added at 49 TRANE Controls Tracer UC400 50 a later date Once power is applied to the controller it will automatically start up and run based upon the setpoint on the local zone sensor An individual time clock can be added to the unit for local scheduling The Tracer UC400 is BTL listed as B ASC profile This ensures the controller to be used with other BACnet building automation systems Tracer UC400 Features Include Single Zone VAV with Fully Modulating Fan Speed The Tracer UC400 will minimize fan speed and in turn energy usage by only delivering the air flow needed Figure 16 Cool mode nominal hydronic cooling control Discharge temp setpoint F uey cooling load Design cooling Space sensible load ad demand Ventilation Reset With the Tracer UC400 the unit ventilator delivers the airflow the space needs When the air flow adjusts the outside air damper will also adjust to satisfy the space needs This helps maintain the proper amount of ventilation air to the occupants independent of the fan speed As part of the ventilation strategy the controller will reposition the outside air damper to confirm the minimum outside airflow is met at both operating conditions Filter Maintenance Filter status for the controller is based on the cumulative run hours o
19. suppliers to meet their evolving building control needs in a cost effective manner Generic Binary Input Output The three generic binary inputs outputs are not part of the normal control but are actually controlled through he Tracer Summit system when present to issue commands to the Tracer ZN520 control to turn the generic inputs outputs of add on equipment such as baseboard heating exhaust fans occupancy sensor lighting etc on and off This binary port is not affected when other binary diagnostics interrupt unit operation 48 UV PRCOO4 EN Tracer UC400 UV PRC004 EN Controls Tracer UC400 Figure 15 The Tracer UC400 controller delivers single zone VAV control and can be used in a stand alone application or as part of a Trane Integrated Comfort System ICS Inthe stand alone configuration Tracer UC400 receives operation commands from the zone sensor and or the auto changeover sensor on auto changeover units The entering water temperature is read from the auto changeover sensor and determines if the unit is capable of cooling or heating The zone sensor module is capable of transmitting the following information to the controller e Timed override on cancel request e Zone setpoint e Current zone temperature e Fan mode selection off auto high med low For optimal system performance unit ventilators can operate as part of an Integrated Comfort System ICS building automation system controlled
20. 0 200 X3 X6 075 100 125 150 200 Volume gal 0 72 0 85 0 99 1 57 0 97 1 17 1 40 2 27 1 25 1 51 1 80 2 96 0 86 0 98 1 13 1 71 1 11 1 30 1 53 2 39 0 97 1 17 1 39 2 25 0 24 0 30 0 35 0 68 0 72 0 85 0 99 1 57 1 21 1 47 1 73 2 94 0 97 1 17 0 99 2 26 UV PRC004 EN General Data Coils Table 7 Coil specifications Hydronic Main Coil Wavy plate finned Hydrostatically tested at 350 psi Piping packages for the main coil assembly are always supplied as a 3 4 inch package Left hand configuration shown Supply 7 8 1 0 Return 7 87 1 0 Coil Type AA AB AC AD AE H1 H2 H3 H4 H5 H6 DA DC DD DE X3 X6 DK R1 R2 Hydronic Auxiliary Coil Wavy plate finned Hydrostatically tested at 350 psi Piping packages for the main coil assembly are always supplied as a 3 4 inch package Right hand configuration shown Return Return 778 LD 5 8 1 0 Su pply ps 78 10 5 8 LD Auxiliary Reheat Auxiliary Preheat Coil Type DA DC DD DE FA R1 R2 Note A manual air vent is provided on all hydronic coils The vent allows air to be purged from the coil during start up or maintenance The air vent is located on the return header Similarly a drain plug is located at the bottom of the MAIN coil return header Steam Main Coil 1 Row tube in tube distributing coil inch female pipe connection Piping packages for steam c
21. 0 amps increase to 150 amps Unit Ventilator electric heat MBh Heater kW 3 413 480 V PRIMARY GROUNDED AT POLE Note Incoming power to the unit ventilator is 3 phase 4 wire for a 480 Volt system 3 hot 1 neutral This does not include an equipment ground UV PRCOO4 EN Performance Data Glycol Correction Factors Glycol in an HVAC System Because the detrimental effects of glycol are lower at high temperatures little concern is given to capacity loss or increased pump power when glycol is added to heating systems This is why it is not uncommon to see glycol percentages up to 40 percent in the heating loop of a system However the same is not true for cooling systems Concentrations of this level are intolerable in cooling systems where fluid temperatures are lower The viscosity of the glycol increases as the temperature of the mixture drops This not only decreases the effectiveness of the heat transfer but it also makes the mixture more difficult to pump To make things worse as the percentage of glycol increases the risk of having laminar flow in the coil increases This again is because glycol is more viscous than water With these effects in mind it is important to use a minimum amount of glycol to protect the HVAC system Burst Protection vs Freeze Protection Burst protection is sufficient in systems where there is adequate space to accommodate the expansion of an ice slush mixture The
22. 1 40353 6867 14159 21323 4TTB3042 63 41204 25231 32327 39155 67 42745 16873 23916 30966 71 44884 7964 15092 22325 200 4TTB3042 63 43734 30169 38934 43734 67 45733 19218 28689 38535 71 47505 7509 17362 26976 4TTB3048 63 47482 30769 39826 47125 67 49200 20140 29313 38635 71 51420 8828 17852 27549 a R 410A DX coils are rated at 95 F dry bulb 80 F wet bulb ambient outside air temperature 25 feet of suction and liquid line 400 cfm per Ton nominal b Total Capacity calculated from outdoor 95 F dry bulb 80 F wet bulb and 80 F indoor DB standard air conditions UV PRC004 EN 31 S TRANE Performance Data Electric Heat Table 20 Electric heat capacity Unit Size Coil Type No of Elem Elem kW Total kW TMBH E4 G4 X4 4 1 95 7 80 26 64 E6 G6 X6 6 1 95 11 70 39 96 E7 7 1 95 13 65 46 61 9 9 1 95 17 55 59 93 100 G3 X3 3 2 60 7 80 26 64 E4 G4 X4 4 2 60 10 40 35 52 E6 G6 X6 6 2 60 15 60 53 27 E7 7 2 60 18 20 62 15 9 9 2 60 23 40 79 91 125 G3 X3 3 3 25 9 75 33 30 E4 G4 X4 4 3 25 13 00 44 40 E6 G6 X6 6 3 25 19 50 66 60 7 3 25 22 75 77 69 9 9 3 25 29 25 99 89 150 G3 X3 3 3 80 11 40 38 91 E4 G4 4 4 3 80 15 20 51 91 E6 G6 X6 6 3 80 22 80 77 86 E7 7 3 80 26 60 90 84 9 9 3 80 34 20 116 79 200 G3 X3 3 3 80 11 40 38 93 E4 G4 4 4 3 80 15 20 51 91 E6 G6 X6 6 3 80 22 80 77 86 E7 7 3 80 26 60 90 84 9 9 3 80 34 20 116 79 32 UV PRC004 EN Performance Data K1 K2 Steam Coils Tab
23. 100 RA BAR GRILLE BOTTOM DIGIT 20 P 100 RA OPEN BOTTOM no grille 7 3 8 3 5 8 E 7 7 8 DIGIT 21 4 DUCT COLLAR DISCHARGE 35 8 FROMTOP T T DIGIT 21 5 FRONT DOUBLE DEFLECTION GRILLE DISCHARGE DIGIT 21 6 FRONT DOUBLE DEFLECTION OPENING ONLY GRILLE ONLY 4 5 1 16 DIGIT 21 7 7 1 4 BOTTOM DISCHARGE with BOTTOM DEFLECTION GRILLE UV PRC004 EN Dimensional Data INLET ARRANGEMENT UNIT SIZE 200 Ae m 5 E pH Inlet Discharge Arrangements Ames m DIGIT 20 lt 5 DIGIT20 B lt 45 8 DIGIT 20 C FA DUCTTOP with 1 DUCTTOP with 4 17 8 FADUCTTOP with RA DUCT LOWER BACK RA DUCT BOTTOM RA BAR GRILLE BOTTOM DIGIT 20 D gt 4 FA DUCT TOP with 4 3 4 m RA OPEN BOTTOM 2 te F un DIGIT 20 E DIGIT 20 F A 5 DIGIT 20 G 100 DUCTTOP A FA DUCT UPPER BACK with 1 FA DUCT UPPER BACK with RA DUCT LOWER BACK RA DUCT BOTTOM o cosi 5 8 1 8 TEE 7 8 DIGIT 20 H DIGIT 20 K DIGIT 20 L FA DUCT UPPER BACK with 100 FA DUCT UPPER BACK 100 RA DUCT LOWER BACK RA BAR GRILLE BOTTOM DIGIT 20 J FA DUCT UPPER BACK with RA OPEN BOTTOM 3s S 1 DIGIT 20 M 4 1 7 8 100 RA DUCT BOTTOM DISCHARGE ARRANGEMENT UNIT SIZE 200 9 3 8 4 6 3 8 DIGIT 21 1 GRILLE DISCHARGE Le 7 1 8 9 7 8 J Fp DIGIT 21 2 DUCT COLLAR DISCHARGE 7 1 8 F
24. 44 Tracer ZN520 Zone Controller 45 TracerUC400 eed oes eh eh awha ee ee es 49 Zone Sensors 51 Dimensional 54 Mechanical Specifications 61 General bead A ee eo E ee ee ey 61 COMMONS 63 oo eae ose eo ee eek bk Spa ba eh ese nee eee 64 4 UV PRC004 EN TRANE Features and Benefits Made for the Classroom Equipment Size The horizontal unit ventilator delivers from 750 cfm to 2000 cfm Trane s unit ventilator is sized to fit any replacement or new construction application Cabinet Finish The unit cabinetry is made of durable industrial grade metal for hard wearing applications All steel surfaces are cleaned phosphatized rinsed and dried before applying a final paint finished on metal that may be exposed to the room decor Access Access to the air filter is made through the bottom of the unit providing effortless access for filter change out The access panel is available with a safety chain option for protection from dropping the panel during normal maintenance situations Figure 1 Cabinet access Spacious End Pockets The 13 1 2 inch wide by 30 inch high by 15 1 4 inch deep standard to provide uncomplicat
25. 5 V Unit Size HP Amps 75 1 16 25 100 1 16 25 120 1 16 25 150 1 16 25 200 1 16 25 Table 23 Minimum Circuit Ampacity for electric heat coils with standard motors Unit Size No of Elem Coil kW 208 Viph 240 V iph 277 Viph 208 V3ph 240V3ph 480 V 3ph 15 5 85 43 84 29 49 01 5 6 14 100 7 8 55 56 48 69 41 39 35 78 31 55 17 93 120 9 75 67 28 58 84 50 19 42 56 37 42 20 86 150 11 4 77 2 67 44 57 63 48 29 42 38 23 35 200 11 4 77 2 67 44 57 63 48 29 42 38 23 35 75 4 7 55 5 48 41 5 1 55 1 100 10 4 71 19 62 23 53 12 44 81 39 37 21 84 120 13 86 81 75 77 64 85 53 85 47 20 25 76 150 15 2 100 03 87 23 74 78 61 49 53 82 29 07 200 15 2 100 03 87 23 74 78 61 49 53 82 29 07 75 6 11 7 69 00 58 99 49 33 43 29 23 80 100 15 6 89 31 76 58 62 88 55 03 29 67 120 19 5 109 63 94 18 76 43 66 77 35 54 150 22 8 NA 126 81 109 08 87 89 76 70 40 51 200 22 8 NA 126 81 109 08 87 89 76 70 40 51 Table 24 Additional Minimum Circuit Ampacity MICA Volts Amps 120 0 94 208 0 55 240 0 48 277 0 41 480 0 41 Table 25 Minimum Circuit Ampacity for electric heat coils with high static motor Unit Size No of Elem Coil kW 208 V iph 240V iph 277 V iph 208V3ph 240 V 3ph 480 V 3ph 75 3 5 85 43 84 38 53 32 59 29 01 25 67 14 99 100 7 8 55 56 48 69 41 39 35 78 31 55 17 93 120 9 75 67 28 58 84 50 19 42 56 37 42 20 86 150 11 4 77 2 67 44 57 63 48 29 42 38 23 35 200 11 4 77 2 67 44 57 63 48 29 42 38 23 35 75 4 7 8 55 56 48 69 41 3
26. 9 35 78 31 55 17 93 100 10 4 71 19 62 23 53 12 44 81 39 37 21 84 120 13 86 81 75 77 64 85 53 85 47 20 25 76 150 15 2 100 03 87 23 74 78 61 49 53 82 29 07 200 15 2 100 03 87 23 74 78 61 49 53 82 29 07 75 6 11 7 69 00 58 99 49 33 43 29 23 80 100 15 6 89 31 76 58 62 88 55 03 29 67 120 19 5 109 63 94 18 76 43 66 77 35 54 150 22 8 126 81 109 08 87 89 76 70 40 51 200 22 8 126 81 109 08 87 89 76 70 40 51 Table 26 Minimum Circuit Ampacity FLA for EC motors Motor Type HP Amps Standard EC motors 1 13 High Static EC motors 1 13 UV PRC004 EN 35 TRANE Performance Data Electrical 36 Minimum Circuit Ampacity MCA and Maximum Fuse Size MFS Calculations for Unit Ventilators with Electric Heat Single Phase Heater Amps Heater kW x 1000 Heater Voltage Note Use 120 V heater voltage for 115 V units Use 240 V heater voltage for 230V units MCA 1 25 x heater amps all motor FLAs MFS or HACR Type Circuit Breaker 2 25 x Largest Motor FLA Second Motor FLA Heater Amps If Applicable HACR Heating Air Conditioning and Refrigeration type circuit breakers are required in the branch circuit wiring for all Unit Ventilators with electric heat Refer to Figure 26 p 35 for motor FLAs Select a standard fuse size or HACR type circuit breaker equal to the MCA Use the next larger standard size if the MCA does not equal a standard size Standard Fuse Sizes are 15 20 25 30 35 40 45 50 6
27. CKETS 7 HAND I END POCKET E Es DISCHARGE ISO VIEW LEFT HAND NOTE END POCKET WHEN ELECTRIC HEAT IS PRESENT ALL POWER CONNECTIONS ARE MADE INTHE RIGHT HAND END POCKET ON ALL OTHER CONFIGURATIONS POWER CONNECTIONS ARE MADE INTHE LEFT HAND END POCKET UV PRC004 EN 55 S TRANE Dimensional Data Double Deflection Discharge Horizontal Unit Sizes 075 150 Bottom Double Deflection Discharge 2 DIA 7 8 DIA FOR PIPING FOR ELECTRICAL 25 we 4 7 51 8 BACK VIEW SIDE VIEW B D 075 170 147 36 46 43 1 4 100 82 1 4 48 58 55 1 4 125 94 147 60 7707 67 1 4 150 10641 4 72 827 79 1 4 7 8 x 2 SLOTS TOP VIEW FOR HANGING BRACKETS Se D RIGHT HAND e lt T1 7 BOTTOM DISCHARGE ISO VIEW LEFT HAND NOTE dini E WHEN ELECTRIC HEAT IS PRESENT ALL POWER CONNECTIONS ARE MADE IN THE RIGHT HAND END POCKET ON ALL OTHER CONFIGURATIONS POWER CONNECTIONS ARE MADE IN THE LEFT HAND END POCKET 56 UV PRCOO4 EN Dimensional Data Double Deflection Discharge Horizontal Unit Size 200 Bottom Double Deflection Discharge 2 DIA 7 8 DIA L FOR PIPING FOR ELECTRICAL 3 4 5 17 5 8 10 1 8 5 9 d 5 1 8 BACK VIEW SIDE VIEW 7 8 x 2 SLOTS TOP VIEW FOR HANGING BRACKETS RIGHT HAND END POCKET
28. DK 4 12 1 14 4 Pipe Cold Water Cool Electric Heating 075 X3 X6 3 12 Electric 100 X3 X6 3 12 Electric 125 X3 X6 2 14 Electric 150 X3 X6 3 12 Electric 200 X3 X6 3 14 Electric 4 Pipe DX Cool Hot Water Heat 075 GA 2 12 1 12 200 GA 2 14 1 14 4 Pipe DX Cool Steam Heating 075 GK 2 12 1 11 100 GK 2 12 1 12 125 GK 2 12 1 11 150 GK 2 12 1 14 200 GK 2 14 1 14 4 Pipe DX Cool Electric Heating 075 G3 G6 2 12 Electric 200 G3 G6 2 14 Electric UV PRC004 EN 25 S TRANE General Data Controls 26 Table 9 Control methodology Fan Speed FSS or infinite CSTI or infinite Tracer ZN520 3 Tracer UC400 Infinite a With a field supplied 2 10 Vdc controller Table 10 Control sequences Fan Speeds DX operation 9 1 Electric heat operation 1 Sidewall Exhaust 5 2 ERSA 5 2 a Fan speed during sequence operation b Unit Ventilator when operating with option UV PRCOO4 EN TRANE Performance Data A Coils AHRI Cooling performance is based on 80 67 F entering air temperature 45 F entering chilled water temperature with a 10 F AT Heating performance is based on 70 F entering air temp 180 F entering water temperature with a 40 F AT All performance measured on high speed tap 115 V Free discharge units 0 0 ESP with throwaway filter High static units 0 20 ESP without filter Table 11 A Coils 2 pipe coil with free discharge EC motor Cooling Heating Total Sensible Total Moto
29. ERATE OPTION Digit 20 F Partially Exposed Unit A ducted discharge option is available to support the many design layouts expected of the mechanical system The location of the discharge ducting could be critical during installation due to such issues as recessed lighting Trane provides three selectable ducted discharge locations to reduce interference of other trades on the job site DUCTWORK HANGERS E BY OTHERS BY OTHERS DUCT COLLAR DUCT LOCATION i CRITICAL WHEN LOCATED ABOVE RECESSED LIGHTS i RECESSING FLANGE RECESSED LIGHT SHIPPED SEPERATE OPTION Note When a high ESP motor is used on the ducted system the return air should enter through a rear duct connection The return air should pass through a lined return air duct with at least one 90 elbow to lessen airflow noise 11 TRANE Application Considerations Condensate Piping The horizontal unit ventilator drain pan connection is located on the same side as the cooling coil connections hydronic and DX coils The stubout size is 3 4 outside diameter All field supplied condensate lines to the unit should contain 1 4 in 12 slope away from the unit ventilator to aid in condensate removal This is typical for most local codes A trap is also recommended somewhere in the condensate system CONDENSATE LIME SHOULD USE A 1 4 IN 12 SLOPE Q 7a 12 Note Drain pan connections are field con
30. L 9 1 AHRI Standard 840 UV PRC004 EN 3 TRANE Table of Contents Introduction PRO A 3 RS 2 Trane Horizontal Classroom Unit Ventilator 2 A Classroom Choice in 2 Features and Benefits 5 Made for the Classroom 5 Application Considerations 10 The Applied Unit Ventilator 12 Selection Procedures 16 Selecting a Unit Ventilator 16 Model Number Descriptions 18 General Dala as ee to bo eet bone I Em Oa ee et ee 20 Performance Data 27 Glycol in an HVAC System 37 s s la s PSS sss ss B 39 Factory Installed Piping Packages 39 Controls E RAE Sed obs 40 Why Trane 40 ECM Engine Controller 41 Unit Mounted Speed Switch 42 Customer Supplied Terminal Interface
31. OILER FOR HEAT ADD AND OR CHILLER FOR COOLING Wide Variety of Heating Cooling Coils Trane s unit ventilator offers a wide variety of coil configurations In environments where cooling needs are of main interest a two pipe coil coupled with a chiller or a direct expansion coil joined with a condensing unit may be used For heat specific applications Trane offers a two pipe hot water only unit to be combined with a boiler Electric heat and steam options are also available for heat fixed conditions When there is seasonal heating and cooling a two pipe chilled water hot water changeover system may be applicable to the mechanical design This system requires a chiller and a boiler to support the changeover necessity However where space constraints may present a concern the Trane unit ventilator may be equipped with a direct expansion coil for cooling with an auxiliary electric heat coil hot water coil or steam coil for heating Four pipe chilled water hot water systems are also available This system is typically applied when both heating and cooling may be simultaneously called for in the school structure Building Automation As part of the building automation system the mechanical HVAC system may be optimized to lower energy consumption By running only the mechanical devices that are required to support the building load at a given time of day or night true energy consumption savings may be achieved Maintenance and s
32. RANE Piping Factory Installed Piping Packages Trane s factory mounts piping packages for hydronic specified coils when Tracer ZN520 Tracer UC400 or CSTI controls are designated Note Valves for steam coils are not factory piped Piping packages are available in either 2 way or 3 way configurations The 3 point floating valve is piped on the return side of the coil Piping packages are factory leak tested to 300 psig to ensure joint integrity Note Insulation for the piping packages is field provided and field installed Package A Two coil union connections Two shut off ball valves Two pressure temperature ports Bypass balancing valve 3 way packages ONLY SUPPLY UNION RETURN UNION P T PORT BALL VA Package C Two coil union connections Shut off ball valves supply Two pressure temperature ports Circuit balancing valve return Bypass balancing valve 3 way SUPPLY UNION packages ONLY P TPORT RETURN UNION Package D Two coil union connections Shut off ball valves supply Strainer one at supply for debris RETURN UNION straining Two pressure temperature ports Circuit balancing valve return Bypass balancing valve 3 way BALL packages ONLY SUPPLY UNION STRAINER P T PORT STRAINER UV PRC004 EN 39 TRANE Controls Why Trane Controls 40 Whether involved in a retrofit or in new construction applications Trane has the control design to fit the
33. ROM TOP 87 8 3 4 DIGIT 212 3 DUCT COLLAR DISCHARGE 3 4 FROM TOP UV PRC004 EN DIGIT 20 N 100 BAR GRILLE BOTTOM DIGIT 20 100 RA OPEN BOTTOM no grille lt 3 5 8 87 8 DIGIT 21 4 DUCT COLLAR DISCHARGE 3 5 8 FROM TOP DIGIT 21 FRONT DOUBLE DEFLECTION GRILLE DISCHARGE DIGIT 21 6 FRONT DOUBLE DEFLECTION OPENING ONLY NO GRILLE E 5 1 16 DIGIT 21 7 y 9 1 4 BOTTOM DISCHARGE with BOTTOM DEFLECTION GRILLE 59 TRANE Dimensional Data Drain Pan Connection RIGHT HAND DRAIN PAN CONNECTION 51 2 LEFT HAND DRAIN PAN CONNECTION IN 5 1 2 NOTE DRAIN PAN CONNECTIONS TERMINATE IN THE SAME END POCKET AS THE COOLING COIL CONNECTIONS DRAIN PAN CONNECTIONS CAN BE CONVERTED TO THE OPPOSITE SIDE AT THE JOB SITE 60 UV PRCOO4 EN TRANE Mechanical Specifications General UV PRC004 EN Deliver and install a complete unit ventilator certified for ventilation at AHRI 840 or tested by an independent testing and balancing lab witnessed by owner s representative All non AHRI manufacturers shall be within 10 percent of catalog airflow and capacities or removal of these units from the jobsite may be required at the expense of the manufacturer or contractor Safety All standard units are ULlisted in the United States and Canada and comply with NFPA 90A requirements Theunit ventilator is certified or rated i
34. Refrigerant Coils option Direct expansion coils contain copper tubes mechanically expanded into evenly spaced aluminum fins All coils are proof and leak tested before leaving the manufacturer The proof test is performed at 1 5 times the maximum operating pressure and leak tested at the maximum operating pressure In addition the tubes are completely evacuated of air to check for leaks in the vacuum The refrigerant coil distributor assemblies Venturi or orifice style with round copper distributor tubes Distributors are sized consistently with capacity of coil Suction headers are fabricated from round copper pipe A thermostatic expansion valve TXV are factory selected and installed for a wide range of control to maintain optimum control of superheat Refrigerant access ports are factory supplied on high and low side for ease of refrigerant pressure or temperature testing All coils are shipped with a dry nitrogen charge Electric Coil option Units equipped for electric heat have a special resistance heating element design inserted in an extended surface fin tube bundle for maximum element life and safety Units specifying electric heat include as standard a high temperature cut out with a continuous sensing element This device interrupts electrical power whenever excessive temperatures are sensed anywhere along the leaving side of the coil Acontactor is included to ensure positive disconnect of electrical power whenever the fan
35. TATUS LED COMMUNICATION LED SERVICE BUTTON AND LED COMMUNICATIONS ZONE SENSOR CONNECTION CONNECTIONS The Tracer ZN520 controller is designed to be used in the following applications e As part of the Trane Tracer Summit building automation system the Tracer ZN520 becomes an important part of the Trane Integrated Comfort system ICS e The Tracer ZN520 can function as a completely standalone controller in situations where a building automation system BAS is not present e For situations when a non Trane BAS is present the Tracer ZN520 can be used as an interoperable unit controller Through building management of the HVAC system optimizing energy consumption becomes possible at a classroom level Each unit is capable of functioning independently of one another during occupied and unoccupied hours of the day This allows the temperature setpoint and ventilation setting to be changed automatically based on classroom usage see Figure 13 p 46 UV PRC004 EN 45 S TRANE Controls Tracer ZN520 46 Figure 13 Tracer ZN520 system P Rover saa Y optional System EM Y fi i Fire Safety System 7 Lighting System Security System To other To other Building Products Trane Products Two Systems in One In an ICS environment the Tracer ZN520 is pre designed to install quickly and easily into the system Since the controller and the unit are factory tested and c
36. When ordered with factory mounted Trane controls the actuator is 3 point floating arrangement A 2 10 Vdc or 3 point floating actuator is available when Customer Supplied Terminal Interface CSTI are specified Face and Bypass The optional face and bypass design can provide active energy savings to the owner This design works best during seasonal changeover when outside air temperature are in their prime It also supports morning warm up when lighter temperatures can easily be drawn into the system before normal classroom operation begins The design allows the damper to bypass the cooing coil to supply cool untreated OA into the room An optional 2 position isolation valve enhances this system by closing off water to the coil to prevent the room temperature from rising to far above or below the intended setpoint S TRANE Features and Benefits Figure 3 Face and bypass damper FACE amp BYPASS DAMPER BLADE EO FRESH AIR EN 918 o 2 lt lt l pem 2 L 1 RETURN AIR Controls Thisistheindustry sfirstsolutionthatisfactory mounted wired and programmed for infinite modulation of fan speed based on space loads using the Tracer UC400 Auto Fan Speed control with the Tracer ZN520 ramps the fan speed up and down to meet space loads All controls are factory mounted and tested to minimize field setup and improve reliability Controls are wired with a 24 Vac transformer to keep only
37. a a a a a a AUX COIL MAIN COIL Coil Type X3 X4 X6 E4 E6 E7 E9 Direct Expansion Coil R 410A e The R 410A direct expansion DX refrigerant coil includes a factory mounted adjustable thermal expansion valve TXV set to 90 psig superheat and an equalizing tube 50 VA transformer Time delay relay Frost detection sensor Outside air sensor Available in a left hand configuration only Liquid 1 2 O D Y Suction 7 8 O D Coil Type G3 G6 G0 GA 24 UV PRC004 EN General Data Coils Table8 Coil row fin information Cooling Heating Style Coil Type Size Type Rows fpi Rows fpi 2 Pipe Changeover Cool or Heat AA 2 12 2 12 AB 2 14 2 14 AC 3 12 3 12 AD 4 12 4 12 AE 4 14 4 14 2 Pipe Heating Only H1 NA NA 1 12 H2 NA NA 1 14 H3 NA NA 1 16 H4 NA NA 2 12 H5 NA NA 2 14 H6 NA NA 2 16 2 Pipe DX Cooling Only 075 G0 2 12 NA NA 100 G0 2 12 NA NA 125 G0 2 12 NA NA 150 G0 2 12 NA NA 200 G0 2 14 NA NA 2 Pipe Steam Heating Only Standard Capacity K1 NA NA 1 8 2 Pipe Steam Heating Only High Capacity 075 K2 NA NA 1 10 100 K2 NA NA 1 13 125 K2 NA NA 1 10 150 K2 NA NA 1 14 200 K2 NA NA 1 14 4 Pipe Cold Water Cool Hot Water Heat DA 2 12 1 12 DC 2 14 1 14 DD 3 12 1 12 DE 3 14 1 14 4 Pipe Cold Water Cool Hot Water Re Heat R1 3 12 1 12 R2 3 14 1 12 4 Pipe Cold Water Cool Steam Heating 075 DK 3 12 1 11 100 DK 3 12 1 12 125 DK 3 12 1 11 150 DK 3 12 1 14 200
38. ard Motors will soft ramp between speeds to 61 TRANE Mechanical Specifications 62 lessen the acoustics due to sudden speed changes Motors can be operated at three speeds or with a field supplied variable speed controller The motor will choose the highest speed if there are simultaneous conflicting speed requests All motors have integral thermal overload protection with a maximum ambient operating temperature of 104 F and are permanently lubricated Motors are capable of starting at 50 percent of rated voltage and operating at 90 percent of rated voltage on all speed settings Motors can operate up to 10 percent over voltage Drain Pan s The unit drain pan consist of a corrosion resistant environmentally friendly design to facilitate condensate removal quickly It is insulated on the bottom to prevent sweating The pan is removable for cleaning The drain connection is easy for the field to reverse to the opposite end Hydronic Coils option All hydronic coils are plate fin type mechanically bonded to tubes The coils are hydrostatically tested to 350 psi and burst tested to 450 psi The coils are rated in accordance with AHRI 440 or 220 A threaded drain plug is provided at the header s lowest point and a manual air vent provided at its highest point The standard four pipe heating coilis inthe preheat location Optional four pipe heating coils have the heating coil in the reheat position for dehumidification control
39. by Tracer Summit The controller is linked directly to the Summit control panel via a twisted pair communication wire requiring no additional interface device i e a command unit The Trane ICS system can monitor or override Tracer UC400 control points This includes such points as temperature and output positions Tracer UC400 Zone Controller Features Include e Single Zone VAV e Automatic ventilation reset e Active dehumidification e Filter maintenance e Water valve override e Freeze avoidance e Interoperability e Unused I O can be as generic I O The Tracer UC400 is a factory installed tested commissioned BACnet MS TP control designed to provide control of the classroom unit ventilator see Figure 15 The Tracer UC400 controller is designed to be used in the following applications as stand alone operation part of the Trane Tracer SC building automation system or part of another BACnet MS TP Building Automation System The Tracer UC400 can function as a completely standalone controller in situations where a building automation system BAS is not present The Tracer UC400 is designed to install quickly and easily into the system Since the controller and the unit are factory tested and commissioned the start up time for the entire system is minimized Trane becomes the single source of responsibility for the equipment unit controls and building automation system As a standalone controller the Tracer UC400 is ideally
40. controller e Transformers e Motors e Valves e Dampers e Electric heat control e Fan speed switches e Main power except electric heat The manual fan mode switch is available for unit ventilators that do not have Trane factory mounted control packages This four position switch off high medium low allows manual fan mode selection and is available unit or wall mounted The unit mounted option operates on line voltage The wall mounted option is low voltage and has three 24 volt relays using a factory wired transformer and relays to control the fan motor 43 TRANE Controls CSTI Customer Supplied Terminal Interface CSTI 44 Figure 10 CSTI adapter board Customer Low Voltage Interface for Valves Electric Heat Dampers Fan Speeds Variable Fan Speed and 24 Vac Supply Valve s Electric Heat and Changeover Configuration Switches Factory Set Figure 11 CSTI adapter board field connections 3 2 1 13 1211109 8 7 6 5 4 3 2 1 1 VSP 10V 2 VSP 0 10V 3 VSPDC COM 24 Vac Y hot 24 Vac Y gnd High Medium Low V1Op Cooling V1C1 not std Not used Not used V2Op EH1St Heating V2C1 EH2St not std Damper Open 13 Dmp CI not std o d O O ue N gt 2 N The control interface is intended to be used with a field supplied low voltage thermostat or controller The control box contains a relay board which includes a line voltage to 24 volt transformer quiet
41. ed field installation of valves piping and controls Several large knockouts are provided in both the left and right end pockets for electrical and piping connections Control Connections All electrical connections are made in the left hand end pocket for equipment not specified with electric heat Units equipped with the electric heat option have in coming power connections made in the right hand end pocket Fan Board The fan board assembly is acoustically designed in a single rigid assembly that includes the fans fan housing bearings fan shaft and motor The fan motor is mounted on the heavy gauge galvanized fan board assembly to help resist corrosion while increasing strength and rigidity The fan board is removable through two metal screws for service or maintenance cleaning of the fan housings UV PRC004 EN 5 S TRANE Features and Benefits Energy Efficiency Trane s commitment to providing premium quality products has led to the exclusive use of Electronically Commutated Motors ECM in all Unit Ventilators These brushless DC motors incorporate the latest technology for optimized energy efficiency acoustical abatement maintenance free and extended motor life Each motor has a built in microprocessor that allows for programmability soft ramp up better airflow control and serial communication e Trane units equipped with ECMs are significantly more efficient than the standard Permanent Split Capacitor PSC motor
42. ed to provide rapid classroom warm up and increasing amounts of ventilation air to offset classroom overheating ASHRAE Cycle l All standard unit ventilator cycles automatically close the outside air damper whenever maximum heating capacity is required As room temperature approaches the comfort setpoint the outside air damper opens fully and the unit handles 100 percent outside air Unit capacity is then controlled by modulating the heating element capacity ASHRAE Cycle is typically used areas where a large quantity of outdoor air is required to offset the air being exhausted to relieve the room of unpleasant odors and particles ASHRAE Cycle ASHRAE Cycle Il is the most widely used ventilation control Similar to Cycle the outside air damper is closed during warm up But with Cycle Il the unit handles recirculated air through the return air system As temperature approaches the comfort setting the outside air damper opens to admit a predetermined minimum amount of outside air This minimum has been established by local code requirements and good engineering practices per AHRI 840 Unit capacity is controlled by varying the heating element output If room temperature rises above the comfort setting the heating element is turned off and an increasing amount of outside air is admitted until only outside air is being delivered ASHRAE Cycle ll is a very economical control sequence often referred to as integrated economizing This d
43. ensible Capacity Capacity FlowRate WPD Size Coil MBh MBh gpm ft H20 X3 26 73 18 60 5 33 3 85 075 X4 26 73 18 60 5 33 3 85 X6 26 73 18 60 5 33 3 85 X3 32 41 21 82 6 46 6 49 100 4 32 41 21 82 6 46 6 49 6 32 41 21 82 6 46 6 49 X3 39 67 27 73 7 91 7 51 125 4 39 67 27 73 7 91 7 51 6 39 67 27 73 7 91 7 51 X3 50 24 34 23 10 01 6 96 150 X4 50 24 34 23 10 01 6 96 6 50 24 34 23 10 01 6 96 X3 72 21 48 78 14 39 13 34 200 4 12 21 48 78 14 39 13 34 6 72 21 48 78 14 39 13 34 UV PRC004 EN 29 S TRANE Performance Data GA DK R1 R2 Coils AHRI Cooling performance is based on 80 67 F entering air temperature 45 F entering chilled water temperature with a 10 F AT Heating performance is based on 70 F entering air temp 180 F entering water temperature with a 40 F AT All performance measured on high speed tap 115 V Free discharge units 0 0 ESP with throwaway filter High static units 0 20 ESP without filter Table 17 R1 R2 GA coils 4 pipe with free discharge EC motor heating data Heating Total Capacity Flow Rate WPD Unit Size Coil MBh gpm ft H20 R1 30 38 1 52 1 66 075 R2 36 27 1 81 2 29 GA 53 61 2 68 0 59 RI 38 03 1 90 0 54 100 R2 45 30 2 27 0 74 GA 72 06 3 60 1 14 R1 48 31 2 42 0 94 125 R2 57 62 2 88 1 30 GA 90 57 4 53 1 91 RI 68 42 3 42 1 36 150 R2 81 16 4 06 1 85 GA 102 98 5 15 2 63 R1 81 33 4 07 1 86 200 R2 96 80 4 84 2 56 GA
44. ervice access If standard end pock is less than 12 inches wide an extended cabinet are provided Final finish is cleaned phosphatized and painted with an electrostatic powder spray system with a minimum thickness of 1 5 mil to avoid visible runs and resist abrasion Unit Fans The unit fan board assembly shall ship from the factory wired to the commission schedule for engineered cfm expectancy A motor speed switch is on the unit or wall for motor speed adjustment The fan board is a single rigid construction made from corrosion resistive material It is a trouble free slide design to provide cleaning and serviceability ease to maintenance personnel The fans contain a double width double inlet forward curved centrifugal design to sustain appropriate air throw into the space The wheels are galvanized metal to resist corrosion The dynamically balanced fan and motor are of direct drive style Thefan andcoil arrangementare of a blow thru configuration to supply unvarying coil face velocity avoiding cold spots on the coil Motors All motors are brushless DC BLDC electronically commutated motors ECM factory programmed and run tested in assembled units The motor controller is mounted in a touch safe control box with a built in integrated user interface and LED tachometer If adjustments are needed motor parameters can be adjusted through momentary contact switches accessible without factory service personnel on the motor control bo
45. erviceability faults through the unit sensing devices are easily defined and cured with an automated system With factory shipped direct digital controls installation and start up of the system are more simple Condensate Proper condensate trapping is required for the classroom unit ventilator s with hydronic and direct expansion coils In a properly trapped system when condensate forms during normal operation the water level in the trap rises until there is a constant flow of water through the pipe It is imperative to maintain water in the trap and not allow the trap to dry out during heating season Equipment should be installed level to avoid condensate build up around the coil 13 TRANE Application Considerations 14 Performance Application of this product should be within the catalogs airflow and unit performance The Trane Official Product Selection System TOPSS will aid in the selection process for a set of given conditions If this program has not been made available ask a local Trane sales account manager to supply the desired selections or provide a copy of the program Ventilation for Acceptable IAO Supplying proper ventilation to a classroom is challenging The various rooms that make up a school are forever changing in their proper ventilation needs Building occupants and their activities generate pollutants that heighten the ventilation requirements And because of this intermittent occupancy the ve
46. es actual 41 1 2 x 15 1 4 x 1 53 1 2 x 15 1 4x1 65 1 2 15 1 4 x 1 77 1 2x15 1 4x1 77 1 2 x 15 1 4 x 1 a Working weight is approximately 10 less than shipping weight Trane recommends 1 4 inch rods for hanging suspension Table 2 Standard motor data typical for coil Unit Size Volts RPM Nominal CFM Nominal Amps FLA Watts HP 75 115 60 1 1050 750 13 135 1 100 115 60 1 1050 1000 13 180 1 125 115 60 1 1050 1250 13 191 1 150 115 60 1 1050 1500 13 221 1 200 115 60 1 875 2000 13 311 1 Table 3 Hi ESP motor data typical for AA coil Unit Size Volts RPM Nominal CFM Nominal Amps FLA Watts HP 75 115 60 1 1330 750 13 198 1 100 115 60 1 1330 1000 13 287 1 125 115 60 1 1330 1250 13 305 1 150 115 60 1 1330 1500 13 357 1 200 115 60 1 1200 2000 13 770 1 Table 4 Coil area Unit Size Length in Width in Face Area in2 075 42 12 504 100 54 12 648 125 66 12 792 150 78 12 936 200 78 12 936 Table5 Inlet grille free area Horizontal Minimum Free Area Unit Size Outlet in2 Inlet in2 075 232 144 100 296 192 125 364 240 150 and 200 430 288 UV PRC004 EN 21 S TRANE General Data 22 Table 6 Coil volume gallons Coil Type Unit Size AA AB 075 100 125 150 200 AC 075 100 125 150 200 AD amp AE 075 100 125 150 200 DA DC 075 100 125 150 200 DD DE 075 100 125 150 200 DK 075 100 125 150 200 H1 H3 075 100 125 150 200 H4 H6 075 100 125 150 200 R1 R2 075 100 125 15
47. esign supports optimum ventilation and provides the greatest energy savings This is further proof of why AHRI 840 certification is important in minimizing energy consumption through economizer performance UV PRCOO4 EN Application Considerations Figure 4 ASHRAE cycle graph ASHRAE CYCLE OPEN 100 OUTDOOR AIR DAMPER CLOSED 0 fhe SET 2 L POINT 1 2 ON 100 HEATING ELEMENT CAPACITY o T1 e Lr i rg ASHRAE CYCLE Il OPEN 100 OUTDOOR AIR DAMPER CLOSED 0 2 1 POINT 1 42 ON 100 HEATING ELEMENT CAPACITY OFF 076 Freeze Protection The mostimportant advantage the Trane blow thru design provides is additional protection against coil freeze up In contrast draw thru configurations allow little mixing of the return and outside air stream while locating the coil very close to the outside air inlet This process creates cold spots on the coil which could lead to coil freeze up With a blow thru design face and bypass with isolation valve control is not necessary as with other manufacturers to provide proper freeze protection to the unit ventilator This adds cost and more mechanical components that could break down The placement of the coil above the fan allows enough space for the coil to avoid cold spots that could cause freezing UV PRC004 EN 15 TRANE Selection Procedures Selecting a Unit Ventilator 16 Trane horizontal classroom uni
48. f the unit fan The controller compares the amount of fan run time against an adjustable fan run hour stored in the controller to determine when maintenance is recommended for the unit The run hours value may be user edited as required The valid range for the fan run hours limit is 0 to 5000 hours with a default of 600 hours Once the run hours limit has been exceeded the controller generates a maintenance required diagnostic unit will not shut down The user will be notified of this diagnostic through the building automation system or when a Trane service tool is communicating with the controller Active Dehumidification On unit ventilators with reheat coils the controller can provide active dehumidification to the classroom This means that the classroom relative humidity can be kept below an adjustable setpoint independent outdoor weather conditions Indoor humidity levels are recommended by ASHRAE to be kept below 60 percent in order to minimize microbial growth and the life span of airborne illness causing germs Hydronic Coil Freeze Protection Freeze Avoidance Unit ventilator systems in cold climates need to take precautions to avoid hydronic coil freeze up The controller does this from three different aspects Any of these methods of protections will result in the unit fan being disabled the outside air damper being shut and the hydronic valves being opened 100 percent The three methods of freeze avoidance include 1 A bina
49. g economizer capacity required e Total cooling or heating capacity required Total air circulation if not specified by code should be sufficient to ensure comfort conditions throughout the room This is usually from six to nine air changes per hour but can vary with room design and exposure Often rooms with large sun exposure require additional circulation to avoid hot spots Ventilation cooling capacity is determined by the amount of outside air delivered with the outside air damper fully open and the temperature difference between the outside air and the classroom In air conditioning applications ventilation cooling capacities should maintain the comfort setting in the classroom whenever the outside air temperature is below the unit or system changeover temperature Example Ventilation cooling capacity 1 085 x cfmt x T1 T2 cfm Total air capacity of unit with outside air damper open 100 1 Room temperature T2 Outside air temperature In classrooms with exceptionally heavy air conditioning loads unit size may be determined by the total cooling requirement Good practice dictates 375 to 425 cfm per ton of hydronic cooling capacity Normally however Trane classroom air conditioner coils have sufficient capacities UV PRCOO4 EN UV PRC004 EN Selection Procedures Example Given Air circulation specified 8 air changes per hour Classroom size 35 ft long x 25 ft wide x 10 ft high Inside de
50. ge 4 Duct Collar Discharge 3 5 8 from I Digit 2122 Digit 21 2 5 6 2 Duct Collar Discharge 5 Double Deflection Grille Discharge 7 1 8 fromTop 6 Double Deflection Opening Only no grille Digit 21 3 Digit 21 7 3 Duct Collar Discharge 7 Bottom with Double 3 4 from Top Deflection Grille Note Bottom discharge adds 13 1 8 to unit sizes 075 150 and 14 1 8 to unit size 200 Inlet Arrangement FA DUCT TOP FA DUCT UPPER BACK 10095 RA DUCT LOWER BACK w RA DUCT LOWER BACK w RA DUCT LOWER BACK DIGIT 20 M FA DUCT TOP A4 XFADUCT UPPER BACK A 10096 RA DUCT BOTTOM w RA DUCT BOTTOM w RA DUCT BOTTOM DIGIT 20 N amp P FA DUCT H FA DUCT UPPER BACK 100 RA STAMPED w RA BAR GRILLE BOTTOM w RA BAR GRILLE BOTTOM GRILLE BOTTOM D FA DUCT J FA DUCT UPPER BACK P 100 RA OPEN BOTTOM w RA OPEN BOTTOM w RA OPEN BOTTOM no grille no grille DIGIT 20 K 100 FA DUCT TOP 100 FA DUCT UPPER BACK 20 UV PRCOO4 EN General Data Table 1 Weights and measurements horizontal unit ventilators Unit Size 075 100 125 150 200 Unit Length in 70 1 4 82 1 4 94 1 4 106 1 4 106 1 4 Unit Height in 16 5 8 16 5 8 16 5 8 16 5 8 17 5 8 Unit Width Front Discharge in 35 5 8 35 5 8 35 5 8 35 5 8 43 1 8 Unit Width Bottom Discharge in 48 3 4 48 3 4 48 3 4 48 3 4 57 1 4 Shipping Weight Ib 340 375 435 500 600 Filter Size inch
51. he equipment Trane s commitment to providing premium quality products has led to the exclusive use of Electronically Commutated Motors ECM in all Unit Ventilator models These brushless DC motors incorporate the latest technology for optimized energy efficiency acoustical abatement 2013 Trane All rights reserved UV PRC004 EN Introduction maintenance free and extended motor life Each motor has a built in microprocessor that allows for programmability soft ramp up better airflow control and serial communication Additionally this is the industry s first solution that is factory mounted wired and programmed for infinite modulation of fan speed based on space loads using the Tracer UC400 Trane unit ventilators are ETL listed and AHRI 840 certified insuring peek performance to meet today s classroom habitat Trademarks Integrated Comfort Rover TOPSS Tracer Tracer Summit Trane and the Trane logo are trademarks or registered trademarks of Trane in the United States and other countries All trademarks referenced in this document are the trademarks of their respective owners BACnet is a registered trademark of American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE Echelon LoNMank LonTalk and LoNWoRks are registered trademarks of Echelon Corporation UL and the UL logo are trademarks of UL LLC CERTIFIED U www ahridirectory org Unit Ventilators G U S
52. il with high static EC motor Cooling Heating Total Sensible Total Motor Airflow Capacity Capacity Flow Rate WPD Capacity FlowRate WPD Power Size Coil Type cfm MBh MBh gpm ft H20 MBh gpm ft H20 W AA 780 17 24 14 07 3 44 1 24 48 00 2 40 0 60 198 AB 760 20 09 15 16 4 00 1 62 54 40 2 72 0 70 198 075 AC 755 25 81 17 92 5 14 3 62 60 20 3 01 1 20 198 AD 740 18 96 15 35 3 78 0 55 64 20 3 21 0 40 198 AE 795 22 56 16 92 4 50 0 76 74 50 3 73 0 50 198 AA 1115 28 38 21 70 5 66 3 57 68 00 3 40 1 30 287 AB 1090 32 67 23 42 6 51 4 59 77 50 3 88 1 60 287 100 AC 1085 38 77 26 52 7 73 8 91 85 50 4 28 2 70 287 AD 1055 37 26 25 97 7 43 2 17 92 40 4 62 0 80 287 AE 1005 36 82 24 68 7 34 2 13 96 40 4 82 0 90 287 AA 1255 34 55 26 50 6 88 5 87 79 60 3 98 2 00 305 AB 1225 39 67 28 07 7 91 7 51 90 40 4 52 2 50 305 125 AC 1220 42 27 29 69 8 42 4 37 96 90 4 85 1 40 305 AD 1350 51 35 34 70 10 23 4 38 118 70 5 93 1 50 305 AE 1295 51 45 33 47 10 25 4 39 124 80 6 24 1 60 305 AA 1490 37 40 27 72 7 45 7 68 95 40 4 77 3 10 357 AB 1450 42 55 29 09 8 48 9 65 108 00 5 40 3 80 357 150 AC 1445 45 63 30 84 9 09 5 65 115 80 5 79 2 20 357 AD 1715 55 74 36 38 11 11 5 63 150 00 7 50 2 50 357 AE 1635 55 39 34 88 11 04 5 57 157 20 7 86 2 70 357 AA 2095 50 67 39 43 10 10 13 16 120 40 6 02 4 60 770 AB 2005 57 94 41 78 11 55 16 71 136 40 6 82 5 80 770 200 AC 1990 62 87 43 94 12 53 9 99 147 40 7 37 3 40 770 AD 1895 69 14 45 88 13 78 8 32 162 40 8 12 2 90 770 AE 1770 68 74 43
53. in the proper amount of ventilation air to the occupants independent of the fan speed As part of the ventilation strategy the controller will reposition the outside air damper to confirm the minimum outside air cfm is met at both operating conditions Manual Output Test The Tracer ZN520 controller includes a manual output test function This function may be initiated from the blue test push button on the controller or through the Rover service tool This feature is used to manually exercise the outputs in a defined sequence The purpose of this test sequence is to verify output and end device operation The manual output test function may also be used in the following situations e Resetlatching diagnostics Verify output wiring and operation UV PRCOO4 EN UV PRC004 EN Controls Tracer ZN520 e Force the water valve s open to balance the hydronic system during installation set up or service Filter Maintenance Filter status for the controller is based on the cumulative run hours of the unit fan The controller compares the amount of fan run time against an adjustable fan run hour stored in the controller to determine when maintenance is recommended for the unit The run hours value may be user edited as required through Rover The valid range for the fan run hours limit is 0 to 5000 hours with a default of 600 hours Once the run hours limit has been exceeded the controller generates a maintenance required diag
54. le 21 Steam coil capacity TMBH Unit Size Coil Type EAT 5 PSIG 10 PSIG 15 PSIG 075 K1 20 85 89 89 98 93 48 0 78 94 83 04 86 54 20 72 00 76 10 79 59 40 65 06 69 16 72 65 60 58 12 62 21 65 71 70 54 65 58 74 62 24 K2 20 101 18 106 01 110 12 0 93 00 97 83 101 94 20 84 82 89 65 93 77 40 76 64 81 47 85 59 60 68 46 73 29 77 41 70 64 38 69 20 73 32 100 K1 20 112 93 118 31 122 91 0 103 80 109 19 113 78 20 94 67 100 06 104 65 40 85 54 90 93 95 52 60 76 41 81 80 86 40 70 71 85 77 24 81 83 K2 20 158 08 165 61 172 05 0 145 30 152 84 159 27 20 132 52 140 06 146 49 40 119 74 127 28 133 71 60 106 96 114 50 120 93 70 100 57 108 11 114 55 125 K1 20 139 94 146 61 152 31 0 128 63 135 30 140 99 20 117 31 123 99 129 68 40 106 00 112 68 118 37 60 94 69 101 36 107 06 70 89 03 95 71 101 40 K2 20 164 93 172 79 179 50 0 151 60 159 46 166 17 20 138 26 146 13 152 84 40 131 78 132 80 139 51 60 111 60 119 47 126 18 70 104 93 112 80 119 51 150 K1 20 166 93 174 89 181 68 0 153 44 161 40 168 19 20 139 94 147 90 154 70 40 126 45 134 41 141 20 60 112 96 120 92 127 71 70 106 21 114 17 120 96 K2 20 243 70 256 14 263 74 0 224 72 236 38 246 33 20 204 96 216 62 226 57 40 185 20 196 86 206 80 60 165 43 177 09 187 04 70 155 55 167 21 177 16 200 K2 20 286 51 306 05 317 93 0 266 20 282 43 294 32 20 244 09 258 82 270 71 40 221 28 235 21 274 09 60 197 66 211 59 223 48 70 185 86 199 79 211 67 Notes 1 Condensate trap for the steam coil opti
55. motor power is interrupted A dead front switch disconnects power to the unit when the access panel is opened All electric heat units have a power wiring console in the right hand end pocket to facilitate field wiring of the unit Steam Coil option Units including a steam coil are of a a 5 8 inch sigma flow tube in tube distributing coil design Steam coil tubing is mechanically expanded into evenly spaced aluminum fins The supply and return connections on the same side and include a 1 inch female pipe thread FPT termination The coil is pitched by the manufacturer to provide condensate drainage UV PRCOO4 EN Controls UV PRC004 EN Mechanical Specifications Outside Air Return Air Damper Each unit ventilator design results in a fixed air compressible seal to ensure proper modulation and mixing of the return and outdoor air The damper is capable of varying proportion of mixed air from 100 percent room air to 100 percent outside air Face and Bypass Damper option Face and bypass damper control is provided on the unit ventilator This bypass damper design is utilized for economizing and dehumidification of the equipment during seasonal or morning warm up The damper is constructed of aluminum grade The damper is tightly sealed and designed to minimize heat pickup in the bypass position A coil isolation valve is a selectable option It is a 2 position 2 way valve with 24 Vac 60 Hz electrical a
56. n accordance to the following listings for performance proof and safety UL AHRI 840 AHRI 350 LoNMaRK BACnet Equipment Construction Exterior cabinetry is constructed of heavy gauge metal for strength and durability All exposed edges are rounded to safeguard against injury All interior sheet metal is galvanized steel to restrain against deterioration The bottom plane of the unit shall consist of a two panel design A hinged panel option is provided as part of the equipment options to help alleviate hazards from falling panels during maintenance orinspection purposes The control compartmentis accessible without removing the entire bottom panel The unit discharge grilles are welded or screwed in place to become an integral part of the unit structure The rounded edge steel bars are placed at a 10 slope to provide proper airflow deflection Access for inspection and cleaning of the unit drain pan coils and fan section are provided The unit shall be installed for proper access Procedures for proper maintenance ofthe unitare included in the installing operation manual Cabinet insulation is 1 2 inch thick dual density bonded glass fiber The exposed side is a high density erosion proof material suitable for use in air streams up to 4500 feet per minute FPM Insulation shall meet the Underwriters Laboratories Fire Hazard Classification Piping and control end pockets are a minimum of 12 inches wide to facilitate coil piping and s
57. nd a stroke time of 10 seconds ON 5 seconds OFF Close off pressures include 30 psig 1 27 15 psig 3 47 and 9 psig 1 Controls options are unit mounted fan speed switch customer supplied terminal interface Tracer ZN520 and Tracer UC400 A variety of inputs and outputs are available for the and Tracer controller options A disconnect switch for non electric heat units fused transformer contactor s and terminal strip are provided with the CSTI and Tracer controller options Customer Supplied Terminal Interface CSTI The control interface is intended to be used with a field supplied low voltage thermostat or controller The control box contains a relay board which includes a line voltage to 24 volt transformer and an optional disconnect switch All end devices are wired to a low voltage terminal block and are run tested so the only a power connection and thermostat controller connection is needed to commission the unit Changeover sensors and controls are provided whenever a change over coil is selected When N O valves are selected inverting relays are provided for use with standard thermostats Unit mounted Fan Speed Switch FSS The fan speed switch is available with or without the control interface option The unit mounted FSS will employ a low voltage fan switch The low voltage fan speed option will provide an interface to factory wiring including variable speed high medium low HML control The control
58. neric Analog Outputs C C Variable speed fan X Field supplied analog valves X gt x x x x x gt x XX x x x x x x x gt X X gt gt 9 gt gt gt D X X X x X gt a The generic input and output are for use with a Tracer Summit system only Table 30 Controller function summary ZN520 UC400 Control Functions Entering Water Temp Sampling Purge X X Auto Changeover X X Fan Cycling Warm Up X Pre Cool X Data Sharing Master Slave X Random Start X X Dehumidification X X Single Zone VAV X Staged Capacity 2 Stage Electric Supplementary X X Other Functions Manual Test X in TU Maintenance Timer X X Setpoint Limits X X UV PRCOO4 EN ECM Engine Controller Controls Engine Controller The Electronically Commutated Motor engine controls and reports the performance of up to two Trane Brushless DC BLDC motors Figure6 ECM engine controller e Theengine also coordinates the operation ofthe fan in response to electric heat behavior and electric behavior in response to hydronic heat behavior e The engine incorporates a user interface that allows adjustment of certain unit parameters provides constant feedback on motor operation e The engine integrates service and troubleshooting tools e The engine integrates a versatile configurable auxiliary temperature sensor e The engine incorporates va
59. nostic unit will not shut down The user will be notified of this diagnostic through the building automation system or when Trane Service Tool is communicating with the controller Active Dehumidification On unit ventilators with reheat coils the Tracer ZN520 can provide active dehumidification to the classroom This means that the classroom relative humidity can be kept below an adjustable setpoint independent outdoor weather conditions Indoor humidity levels are recommended by ASHRAE to be kept below 60 in order to minimize microbial growth and the life span of airborne illness causing germs Master Slave Data Sharing Because the Tracer ZN520 controller utilizes LonWorks technology the controller can send or receive data setpoint heat cool mode fan request space temperature etc to and from other controllers on the communication link with or without the existence of a building automation system This applies to applications where multiple units might share one zone sensor for both stand alone with communication wiring between units and a building automation system see Figure 14 Figure 14 Master slave system layout ZONE ZONE SENSOR 1 sensor 2 SLAVE A1 4 N E p wasTERB E P ur m E L E a 28 MASTERS SLAVE B1 A MASTER A SLAVE A2 B Water Valve Override The Tracer ZN520 can be commanded via the Rover service tool to open all hydronic valves 100 This allows for
60. nt when tested in accordance with ASHRAE Standard 52 1 atmospheric dust spot method Units equipped with 1 in MERV 13 filters have a rating based on ASHRAE Standard 52 2 The average dust spot efficiency is no less than 90 percent efficiency on 1 3 micron particles and greater than 90 percent efficiency on 3 10 micron particles when tested in accordance with ASHRAE Test Standard 52 2 UV PRCOO4 EN TRANE Trane optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments Trane offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www Trane com Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice Ingersoll 2013 Trane All rights reserved UV PRCOO4 EN 04 Feb 2013 We are committed to using environmentally Supersedes UV PRCO04 EN 18 Jun 2012 conscious print practices that reduce waste
61. ntilation frequency of a classroom is constantly on the move Ventilation systems dilute and remove indoor contaminants while mechanical heating and cooling systems control the indoor temperature and humidity Supplying an adequate amount of fresh air to an occupied classroom is necessary for good indoor air quality IAQ should be considered a top priority in the school environment because children are still developing physically and are more likely to suffer the consequences of indoor pollutants For this reason air quality in schools is of particular concern Proper conditioning of the indoor air is more than a quality issue it encompasses the safety and stewardship of our investment in the students staff and facility The beauty of a classroom unit ventilator is its ability to provide heating cooling ventilation and dehumidification as a single zone system ASHRAE Control Cycles There are a variety of control systems available in unit ventilators The exact method of controlling the amount of outside air and heating capacity can vary However all systems provide a sequence of operation designed to provide rapid classroom warm up and increasing amount of ventilation air to offset classroom overheating Reasons for classroom overheating can include e Sun or solar heat produced through large glass areas in a school e Lighting e Students To help supply proper ventilation to these fluctuating heat gains the Trane unit ventilator is design
62. oils are field provided Equipment specified with Trane controls will benefit from an optional 2 position isolation valve to be used for close off to the steam coil when the damper is in full bypass position Right hand configuration shown Supply 1 FNPT Return 1 FNPT Coil Type K1 K2 UV PRC004 EN 23 S TRANE General Data Coils Table 7 Coil specifications continued Steam Auxiliary Coil 1 Row tube in tube distributing coil inch female pipe connection Piping packages for steam coils are field provided The modulating piping valve option is shipped loose and field installed Right hand configuration shown Supply 1 FNPT Return 1 FNPT Coil Type DK FK Electric Heat Coil Electric preheat coils consist of special resistance elements inserted in the coils fin surface for maximum element life heat transfer and safety Units include a high temperature cut out with a continuous sensing element This device interrupts electrical power whenever excessive temperatures are sensed along the leaving air side of the coil Electric heat units include a panel interlock switch to disconnect power to the heating element when the access panel is opened Power connection is made in the right hand end pocket e A circuit breaker option is available through the equipment model number Element Location Element Location 2x EEE aa j
63. ommissioned the start up time for the entire system is minimized Trane becomes the single source of responsibility for the equipment unit controls and building automation system As a standalone controller the Tracer ZN520 is ideally suited for fix on fail replacement of units with old pneumatic controllers or in situations where a BAS will be added at a later date Once power is applied to the controller it willautomatically startup and run based upon the setpoint on the local zone sensor An individual time clock can be added to the unit for local scheduling The Tracer ZN520 is certified to the interoperable LoNMARK Space Comfort Controller profile This allowsthe controllerto be used with another vendor s BAS and thereby still providethe high quality of factory installation and testing In addition the Tracer ZN520 provides one of the most extensive interoperable data lists of any controller of its type in the industry Tracer ZN520 Features Include Automatic Fan and Ventilation Reset With the Tracer ZN520 controller a two speed fan control for the unit ventilator delivers the airflow output customized to support the cfm space needs When less cfm is necessary to meet the load of the classroom typically 75 to 80 percent of the time the equipment operates on low speed However if the room temperature rises the controller will switch to high speed and the outside air damper will adjust to satisfy the space needs This helps mainta
64. on is field installed 2 Static pressure for the K1 K2 options should be modeled after the H1 coil option 3 Steam coils that function at 5 psig or less should not utilize valve control Valve control may starve the coil causing stratification UV PRC004 EN 33 TRANE Performance Data DK GK Steam Coils Figure 5 DK GK Steam coils performance data Size 075 Unit Total Heating Capacity MBH Size 125 Unit Total Heating Capacity MBH 150 Temp Air 130 Entering Coil F o pup Behr eens E 90 pM propor cpu 70 Et prc RES EH t te 50 30 0 5 190 Temp Air Entering Coil F 170 130 LLL 90 70 0 5 Size 200 Unit Total Heating Capacity MBH 34 380 340 Temp Air Entering Coil F Saturated Steam Pressure PSIG Se 10 Saturated Steam Pressure PSIG 10 Saturated Steam Pressure PSIG 10 15 15 Size 100 Unit Total Heating Capacity MBH 170 Temp Air Entering Coil F 150 x L 110 SSES HES ee 70 50 0 5 Size 150 Unit 320 290 Temp Air Entering Coil F 240 Total Heating Capacity MBH 10 15 Saturated Steam Pressure PSIG HSE 70 80 10 15 Saturated Steam Pressure PSIG Note Steam pressure below 8 psi is not recommended UV PRC004 EN Performance Data Electrical Table 22 Minimum Circuit Ampacity for standard and high static motors 11
65. r Airflow Capacity Capacity FlowRate WPD Capacity Flow Rate WPD Power Size Coil Type cfm MBh MBh gpm ftH20 MBh gpm ft H20 W AA 875 19 12 15 62 3 81 1 49 52 00 2 60 0 70 135 AB 825 21 80 16 49 4 34 1 88 57 80 2 89 0 80 135 075 AC 815 27 63 19 28 5 51 4 09 63 90 3 19 1 40 135 AD 780 21 13 16 70 4 21 0 67 67 20 3 36 0 40 135 AE 760 19 64 15 28 3 91 0 59 71 70 3 58 0 50 135 AA 1090 25 18 9 02 5 02 2 89 67 00 3 35 1 20 180 AB 1030 28 47 20 09 5 67 3 60 74 40 3 72 1 50 180 100 AC 1025 33 88 22 89 6 75 7 02 81 90 4 09 2 50 180 AD 975 30 23 21 17 6 02 1 49 96 60 4 33 0 70 180 AE 1015 32 03 21 56 6 38 1 65 97 30 4 87 0 90 180 AA 1240 33 47 25 57 6 67 5 55 79 00 3 95 1 90 191 AB 1300 40 07 28 39 7 99 7 64 94 40 4 75 2 70 191 125 AC 1290 42 72 30 03 8 51 4 45 101 20 5 06 1 60 191 AD 1240 46 56 31 33 9 28 3 66 110 70 5 54 1 30 191 AE 1265 48 38 31 40 9 64 3 93 122 30 6 11 1 60 191 AA 1600 42 25 31 85 8 42 9 53 100 30 5 01 3 30 221 AB 1525 46 68 32 38 9 30 11 38 112 10 5 60 4 10 221 150 AC 1510 50 09 34 12 9 98 6 66 119 90 5 99 2 40 221 AD 1600 56 11 36 64 11 18 5 70 141 80 7 09 2 30 221 AE 1485 56 68 35 73 11 30 5 81 144 80 7 24 2 30 221 AA 2085 51 50 40 18 10 26 13 55 120 00 6 00 4 60 311 AB 1985 58 90 42 59 11 74 17 21 135 40 6 77 5 70 311 200 AC 1970 64 10 44 91 12 78 10 34 146 40 7 32 3 40 311 AD 1885 71 18 47 35 14 19 8 78 161 70 8 08 2 90 311 AE 1785 70 97 45 41 14 14 8 73 169 30 8 47 3 10 311 Table 12 A coil 2 pipe co
66. rious safety and lockout features such as maintaining proper fan speeds if electric heat is called for Status Display Figure 7 Status display ms i The ECM engine board contains a four digit seven segment display that is used to present information in a format close to real world language while having a small form factor Most characters are immediately recognizable however please consult Table 31 and Table 32 for the graphical representation of each alphanumeric character Table 31 Screen representation of alphabetical characters A B C D R b L d G H I K L M E F J E F 3 HI uH L n Table 32 Screen representation of numeric characters 1 2 UV PRC004 EN 3 4 5 3 H 5 U V W X Y Z U u H Hd e 9 0 g D 41 TRANE Controls Unit Mounted Speed Switch Unit Mounted Speed Switch Figure 8 Fan speed switch 42 Note Customer Low Voltage Interface for Fan Speeds Variable Fan Speed and 24 Vac Supply UV PRCOO4 EN UV PRC004 EN Controls Unit Mounted Speed Switch The adapter allows direct customer interfacing through the use of terminal strips Standard interfacing includes e Fan Speeds H M L for wall mounted fan speed switches e Variable speed 0 10V inputs The standard adapter board eliminates many separate wiring harnesses in the panel and allows simple mistake proofed single plug interfacing of e The ECM engine
67. roviding additional system protection Use glycol correctly 37 S TRANE Performance Data Acoustical Table 28 reflects sound power ratings for the horizontal classroom unit ventilator To calculate the noise criteria NC for a unit subtract the actual room effect from the sound power number in each octave band These numbers may be graphed on a NC chart Note Because room affects vary greatly request exact numbers per the specific job from the design engineer By obtaining these exact numbers the most accurate results of the installed unit may be calculated Data obtained in the reverberant rooms conforming to ANSI 12 31 and ANSI 12 32 Table 28 Horizontal octave band sound power ratings sound power in db ref 10 12 watts Octave Band 1 2 3 4 5 6 7 8 Center of Frequency 63 125 250 500 1000 2000 4000 8000 075 High Speed 66 67 61 60 56 53 48 41 075 Med Speed 62 63 57 56 52 49 44 37 075 Low Speed 59 60 54 53 49 46 41 34 100 High Speed 66 67 61 60 56 52 48 41 100 Med Speed 62 63 57 56 52 48 44 37 100 Low Speed 59 61 55 54 43 45 38 29 120 High Speed 70 71 65 64 60 56 51 44 120 Med Speed 66 67 61 60 56 52 47 40 120 Low Speed 63 64 58 57 53 49 44 37 150 High Speed 65 68 62 60 56 52 45 38 150 Med Speed 61 64 58 56 52 48 41 34 150 Low Speed 57 63 54 53 47 42 33 25 200 High Speed 73 75 68 64 60 57 53 45 200 Med Speed 67 69 62 58 54 51 47 39 200 Low Speed 64 74 59 60 49 45 37 29 38 UV PRC004 EN T
68. rs Figure 21 Split mtd zone sensor unit mtd fan speed switch and wall mtd setpoint dial with On Cancel Digit 19 P Zgmmce 66 X13511527 01 wall 9 mu X13790849 01 unit X13651467 02 comm Figure 23 Wall mtd temp sensor SP OALMH COMM Digit 19 K gt v o X13790841 01 wall X13651467 02 comm 52 Figure 22 Split mtd zone sensor unit mtd fan speed switch and wall mtd setpoint dial Digit 19 O fh M es X13511529 01 wall X13790849 01 unit X13651467 02 comm Figure 24 Wall mtd display temp sensor SP OCC UNOCC OALMIH COMM Digit 19 M 13790886 04 wall X13651467 02 comm UV PRC004 EN Controls Actuators Table 33 Face and bypass actuator specification B Power Supply 77 24 20 50 60 Hz 24 Vac 10 Power Consumption 2 W Transformer Sizing 3 VA class 2 power source 7 Angle of Rotation Maximum95 Adjustable with mechanical stop Torque 3b5binclD Direction of Rotation 7 Reversible with switch L R 3 Position Indication 7 Clip on indicator Manual Override External push button Noise Level Lessthan35dB Control Signal G point floatinn Table 34 Outside air actuator specification Power Supply gt 24Vac 20 50 60H7 24 Vac 10 Power Consumption Running 2 5 W Holding 1 W Tranformer Si
69. ry freeze protection thermostat is mounted on the coil and will cause a latching diagnostic if the coil temperature falls below 35 F UV PRCOO4 EN Controls Zone Sensors 2 An analog discharge air sensor monitors the temperature of the air coming off of the coil and if the temperature falls below 40 F the outside air damper is closed the is turned off and the valves are fully opened 3 Wheninthe unoccupied mode the controller has an adjustable freeze avoidance setpoint If the outside air temperature is below the setpoint the unit will open the valves to allow water to flow through the coils Zone Sensors Zone sensors are available as either unit wall or split mounted options for design flexibility Unit ventilators with the unit mounted zone sensor option include a thermistor in the unit s return air path Wall mounted zone sensor options have an internal thermistor Zone sensors operate on 24 Vac Figure 17 Wireless temp sensor with display SP OALH COMM Digit 19 3 X13790822 04 wall X13790855 01 unit Figure 19 Wall mtd temp sensor SP OCC UNOCC OA LMH COMM Digit 19 J e X13790842 01 wall X13651467 02 comm UV PRC004 EN Figure 18 Wireless temp sensor SP OALMH COMM Digit 19 4 e X13790492 01 wall X13790855 01 unit Figure 20 Unit mtd temp sensor SP OALH COMM Digit 19 L X13790843 01 unit 51 TRANE Controls Zone Senso
70. sign air temperature 75 F Ventilation cooling required at 58 F 29 000 BTU CFM required 8 changes hr x 35 x 25 x 10 ft3 60 minutes hr 1170 cfm Checking ventilation cooling capacity 29 800 BTU 1 085 x CFM x 80 58 1250 This indicates that a 1250 cfm unit would have satisfactory ventilation cooling capacity at the design changeover point of 58 F Coil capacity will become confirmed when the coil is selected Coil Selection Selecting the correct coil is done through Trane s Official Product Selection System TOPSS TOPSS For your convenience TOPSS has a mixed air calculator built into the program 17 TRANE Model Number Descriptions Digit 1 2 3 Unit Configuration HUV Horizontal Unit Ventilator Digit 4 Development Sequence C Third Generation Digit 5 6 7 Development Sequence 075 750 CFM 100 1000 CFM 125 1250 CFM 150 1500 CFM 200 2000 CFM Digit 8 Unit Incoming Power Supply 1 120V 60 1 208V 60 1 208V 60 3 240V 60 1 240V 60 3 277V 60 1 480V 60 3 Phase 4 Wire Power Supply Digit 9 Motor 0 Free Discharge ECM 4 Free Discharge ECM Low Acoustics Free Discharge ECM Low FLA Option Free Discharge Low Acoustics Low FLA High Static ECM High Static ECM Low Acoustics High Static ECM Low FLA Option High Static ECM Low Acoustics Low FLA Digit 10 11 Design Sequence Design Sequence O WN
71. systems requirements The broad range of control packages offer a range from a field convertible end device package to a complete building automation system solution with LonTalk controls The good news is Trane controls are factory mounted wired tested and configured or programmed with Trane application expertise to provide comfort efficiency and reliability as well as single source warranty and service With Trane s integrated controls the installed costs are lower because the equipment has turn key factory controls and every component of the system is optimized to fit with the controller Trane installs not only the controller but also the hardware that works intimately with the controller to allow the system to function properly i e piping package valves dampers actuators etc When a classroom unit ventilator with Trane controls arrives to the jobsite it is completely ready for quick installation Table 29 Controller input output summary 2 520 0 400 Binary Outputs 3 Speed Fan 2 Position Hydronic Valve 2 Position Fresh Air Damper 1 Stage Electric Heat 3 Wire Economizer Damper 3 Wire Hydronic Valve 2 Stage Electric Heat Reheat hydronic or electric Generic Binary Inputs Condensate Overflow Detection Low Temperature Detection Occupancy Generic Input Analog Inputs Zone Temperature Setpoint Fan Mode Auto High Medium Low Entering Water Discharge Air Outside Air Ge
72. t ventilators provide air delivery and capacities necessary to meet the requirements of modern school classrooms They are available with the industry s widest selection of coils to precisely satisfy heating ventilating and air conditioning loads with the best individual type of system Unit ventilator selection involves three basic steps e Determine the classroom space unit cooling and or heating loads e Determine the unit size e Select the coll Capacity Required The first step in unit ventilator selection is to determine room heating and air conditioning loads The calculation of this load is essential if the equipment is to be economical in first cost and operating cost Adequate ventilation is mandatory in classroom air conditioning design The amount is often specified by local or state codes and in air conditioned schools may be either the same or less than that specified for heating systems The usual requirement is between 15 and 25 cfm of outside air peroccupant basedonthe intended use ofthe room For instance a chemistry laboratory normally requires more ventilation for odor control than a low occupancy speech clinic Ventilation is an important concern and should be accurately determined to assure good indoor air quality Purposely oversizing units should be avoided since it can cause comfort and control Issues Unit Size Unit ventilator size is determined by three factors e Total air circulation e Ventilation coolin
73. tem Certification Standards Comfort energy and IAQ are all major issues that need to be considered in today s school designs Therefore it is important that designers of these systems have accurate information to make UV PRCOO4 EN UV PRC004 EN Features Benefits system decisions That is why the industry has developed performance standards and certification programs which ensure that the equipment information provided to the design community is correct and comparable across different manufacturers The following list of certifications identifies Trane s commitment providing the highest quality equipment to their customers AHRI 840 UL e Rated accordance to AHRI 350 sound LonMark TRANE Application Considerations 10 Fully Recessed Unit The horizontal unit ventilator may be fully recessed into the ceiling space to provide greater noise reduction to the space With this application duct collars on the outside air inlet return air inlet and discharge air outlet are available for ease of duct work connection to the equipment DUCTWORK HANGERS AY OTHERS AY OTHERS APT DUCT COLLAR HY FLAME ALLOW SPACE f BETWEEN UNIT AND CEILING BAR FOR ACCESS ORS Partially Exposed Unit In situations where greater access to system components is a must such as filter change out a partially exposed unit may be a practical solution With the partiall
74. the faster water balancing of each unit and the entire system when the command is sent globally to all controllers A properly balanced system is essential for proper and efficient operation Hydronic Coil Freeze Protection Freeze Avoidance Unit ventilator systems in cold climates need to take precautions to avoid hydronic coil freeze up The Tracer ZN520 does this from three different aspects Any of these methods of protections will result in the unit fan being disabled the outside air damper being shut and the hydronic valves being opened 100 percent The three methods of freeze avoidance include 1 Abinaryfreeze protection thermostat is mounted on the coil and will cause a latching diagnostic if the coil temperature falls below 35 F 2 Ananalog discharge air sensor monitors the temperature of the air coming off of the coil and if the temperature falls below 40 F the outside air damper is closed the fan is turned off and the valves are fully opened 47 S TRANE Controls Tracer ZN520 3 When in the unoccupied mode the Tracer ZN520 has an adjustable freeze avoidance setpoint If the outside air temperature is below the setpoint the unit will open the valves to allow water to flow through the coils Interoperability Interoperability allows the owner freedom to select multiple vendors and multiple products With this advantage the owner can choose the best products the best application and the best service from a variety of
75. vertible Ducted Applications A well designed duct system is beneficial to obtaining satisfactory fan performance Determining resistance losses for the duct work system is also necessary for acceptable fan performance Assistance in the design of duct work can be found in the ASHRAE Handbook The unit ventilator is designed to operate against ESP thru 0 45 ESP is determined by adding the discharge air static pressure to the greater of either the outdoor air static pressure or the return air static pressure The Applied Unit Ventilator 12 A Choice in System Design The beauty of the classroom unit ventilator stems beyond its ability to heat and cool The Trane unit ventilator design provides an opportunity to create a comfortable atmosphere for living learning and playing while providing energy efficiency savings with market leading technology Some of the featured benefits of a unit ventilator are e Individual room control e Fresh air ventilation and filtration e Individual dehumidification sequences per zone e Energy savings solutions through economizing functions e Achoice in heating cooling applied systems e because the equipment is mounted directly in the space installation costs are minimal compared to other HVAC systems UV PRCOO4 EN UV PRC004 EN Application Considerations System choice for the classroom unit ventilator AND OR CONDENSER FOR COOLING 1 B
76. y exposed return discharge air bottom arrangement the unit cabinet width increases by 13 1 8 inches for 075 150 unit sizes and by 14 1 8 inches on the size 200 unit DUCTWORK BY OTHERS HANGERS DUCT COLLAR BY OTHERS BY TRANE WEEP HOLES LCEILING GRID RECESSING FLANGE SHIPPED SEPERATE OPTION Fully Exposed Unit The horizontal unit ventilator may be fully exposed to the classroom or institution The most typical arrangement for this application includes a fresh air ducted upper back with a return air bar grille on the bottom Combined with a front discharge grille this arrangement provides a cost effective way to support individual fresh air ventilation while freeing up precious floor space Note All horizontal units have an appliance grade paint finish UV PRCOO4 EN UV PRC004 EN Application Considerations DUCTWORK BY OTHERS HANGERS BY OTHERS DUCT COLLAR BY TRANE WEEP HOLES Digit 20 H Partially Exposed Unit Another example of a partially exposed unit ventilator includes a fresh air upper back with a return air lower back combined with a bottom double deflection discharge This application requires field supplied duct work to the added to the return air side of the unit ventilator DUCTWORK BY OTHERS HANGERS DUCT COLLAR iBY OTHERS EF TRANE gt I FA WALL BO d RA WEEP HOLES DA EN CEILING GRID RECESSING FLANGE SHIPPED SEP
77. zing 5 VA class 2 power source Overload Protection Electronic throughout 0 to 95 rotation gt Control Signal 2 to 10 Vdc 3 point floating with Trane controls Angle of Rotation Maximum 95 Adjustable with mechanical stop Torque 3b5binclD Direction of Rotation 7 Spring return reversible with CW CCW mounting Position Indication Visual indicator 0 to 957 Noise Level Ruming 30B UV PRC004 EN 53 TRANE Dimensional Data Ducted Front Discharge Horizontal Unit Sizes 075 150 2 DIA 7 8 DIA FOR PIPING FOR ELECTRICAL FA UPPER BACK R A LOWER BACK 2 3 8 4 7 8 BACK VIEW SIDE VIEW Sie ABB e 100 82 1 4 48 58 55 1 4 Se 125 60 70 672147 D 13 T m TOP VIEW 7 8 x 2 SLOTS FOR HANGING BRACKETS 7 RIGHT HAND p END POCKET i c M DISCHARGE d di ISO VIEW LEFT HAND NOTE END POCKET WHEN ELECTRIC HEAT IS PRESENT ALL POWER CONNECTIONS ARE MADE IN THE RIGHT HAND END POCKET ON ALL OTHER CONFIGURATIONS POWER CONNECTIONS ARE MADE IN THE LEFT HAND END POCKET 54 UV PRC004 EN Dimensional Data Ducted Front Discharge Horizontal Unit Size 200 2 DIA 7 8 DIA FOR PIPING FOR ELECTRICAL 1 8 2 3 4 B E 2 3 8 4 T 8 72 106 1 4 BACK VIEW SIDE VIEW B2 43 1 8 TOP VIEW 7 8 x 2 SLOTS FOR HANGING BRA

Trane HUVC Horizontal Classroom Unit Ventilator Catalogue

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