Trane 120 GEH User's Manual
Contents
1. Random start delay T Brown out protection oO Low pressure time delay Low pressure switch E High pressure switch m Compressor delay on start Reversing valve coil for heating and cooling units Multi speed fan motor Soft lockout mode 18 pole terminal strip for low voltage field wiring Optional Condensate Overflow Optional Night setback Optional Hot gas reheat for dehumidification Optional Electric heat Optional Compressor enable WSHP PRCO03 EN rene Features and Benefits performance to extend the system life Each device is factory mounted wired and tested in the unit See Figure 23 for unit control box 4 POLE POWER CONNECTION THE DELUXE BOARD INCLUDES HIGH PRESSURE CUT OUT COMPRESSOR ENABLE ANTI SHORT CYCLE RANDOM START BROWNM OUT PROTECTION COMPRESSOR DELAY ON START OPEN RELAY FOR NIGHT SCTRACK OR PUMP BEQUEST LOW PRESSURE FREEZESTAT GENERAL ALARM LED DIAGNOSTICS Small Building Control The deluxe 24V electro mechanical design may be applied as a stand alone control system or as a multi unit instal lation system With a stand alone design units run independently of one pr another with a mercury bulb or elec a g tronic digital thermostat amer With a multiple unit installation the units may be daisy chained directly to the Trane Tracer loop controller TLC pump s boiler and tower for a com plete net2. 24 5 8 x 24 5 8 x3 524 x 756 498 x 651 498 x 651 498 x 651 651 x 651 l l l 12 x 11 12 6 x 12 6 12 6 x 12 6 12 6 x 12 6 15x 15 Blower Wheel in mm Direct Drive 305 x 279 321 x 321 321 x 321 321 x 321 381 x 381 Water in out FPT in mm 1 0 25 1 1 4 31 8 1 1 2 38 1 1 1 2 38 1 1 1 2 38 1 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 WSHP PRCO03 EN 5 S TRANE General Data Table G4 General Data GEV 006 to 018 Unit Size in mm 21 1 2x31 1 4x19 1 5 21 1 2x31 1 4x19 1 5 21 1 2x31 1 4x19 1 5 21 1 2x31 1 4x19 1 5 21 1 2x38 1 4x21 1 2 Length x Height x Depth 546 x 793 x 495 546 x 793 x 495 546 x 793 x 495 546 x 793 x 495 546 x 997 x 546 Approx weight 188 158 188 158 188 158 188 158 278 248 with pallet without pallet lbs kg 85 71 85 71 85 71 85 71 121 112 E Ona aaa Cara 15 7 8 x 19 7 8 15 7 8 x 19 7 8 15 7 8 x 19 7 8 15 7 8 x 19 7 8 17 7 8 x 24 7 8 403 x 505 403 x 505 403 x 505 403 x 505 454 x 632 Blower Wheel in mm 9x4 9x4 9x4 9x4 9x6 Direct Drive 229 x 102 229 x 102 229 x 102 229 x 102 229 x 152 Water in out FPT in mm 1 2 12 5 1 2 12 5 1 2 12 5 1 2 12 5 3 4 19 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Table G5 General Data GEV 024 to 048 O mav j oa os 042 jiz Unit Size in mm 1 1 2x38 1 4x21 1 2 21 1 2x38 1 4x21 1 2 26 1 2x41 7 8x24 1 2 21 1 2x38 1 4x21 1 2 26 1 2x41 7 8x24 1 2 Length x Height x Depth 546 x 997
3. The hanging bracket resides in the chamfered corner of the horizontal 1 2 to 5 ton equipment This partially concealed bracket design eliminates added height width or length to the product The brackets are factory mounted to shorten job installation requirements The structural integrity of the design helps assure no bracket deflection or unit bowing from the unit s weight Field return air hook up and filter main tenance are more simplistic Isolation for the hanging bracket is provided with a neoprene rubber grommet design This isolation device helps prevent sound vibration from reaching the structural support members of the building during compressor start and stop See Figure 7 for isolation device Hanging Device 6 to 12 1 2 ton The hanging channel for the horizontal unit runs the length of the equipment The structural integrity of the design helps assure no bracket deflection or unit bowing from the unit s weight Optional isolation for the hanging brack et is provided with a itrile rubber grom met design This isolation device helps prevent sound vibration from reaching the structural support members of the building during compressor start and stop Access Panels 12 1 2 to 20 ton The upper panels of the 12 1 2 through 20 ton verticals feature a key hole hang ing design for ease of maintenance of the unit allowing the panel to be hooked into place when attaching the panel to the unit The panels are also sealed w
4. uses occupied heating and cooling set points to provide heating and cooling to the building This occupied operation is normally used during the daytime hours when the building is at the high est occupancy level In an occupied standby situation the controllers heating and cooling set points are usually wider than the occu pied setpoints This operation is used during daytime hours of temporary low occupancy To determine the space occupancy an occupancy sensor is applied In an unoccupied situation the con troller assumes the building is vacant normally during evening hours In the unoccupied mode the controller uses the default unoccupied heating and cooling setpoints stored in the con troller When the building is in unoccu pied mode individual units may be manually placed into timed override of the unoccupied mode at the units wall sensor During timed override the con troller interprets the request and initi ates the occupied setpoint operation then reports the effective occupancy mode as occupied bypass In the occupied bypass mode the con troller applies the occupied heating and cooling setpoint for a 120 minute time limit High Low Pressure Safety Controls The Tracer ZN510 ZN524 controller detects the state of the high pressure or low pressure switches When a fault is sensed the corresponding message is sent to the controller to be logged into the fault log When the circuit returns to normal th
5. 1 2 ton units include a single fan assembly The 15 and 20 ton units include dual fan assemblies Because the motor sheave and the motor base are adjustable in the field a greater variation in external static pressures are available The large tonnage units are capable of providing 0 ESP to 3 0 ESP allowing a higher static ductwork to be applied on the mechanical system when the appli cation requires extensive ductwork design This is a low cost alternative to purchasing installing and maintaining multiple smaller tonnage units to meet the required air flow demand for the space Access to the 6 through 25 ton units is made through the back of unit by way of two panels and or through a side access panel if adjustment to the motor belt or motor base are needed Blower Housing The blower housing is constructed of non corrosive galvanized steel A facto ry mounted orifice ring is provided for ease of motor serviceability on the 1 2 through 5 ton direct drive units All air side panels are interchangeable with one another for ease of field con vertibility of the supply air on the GEH model Air Side Filter The air side filter incorporates several fiberglass options These filters include an average synthetic dust weight arrestance of approximately 75 This dust holding capability includes a color less odorless adhesive to retain dirt particles within the filter media after fiber contact Air to Refrigerant Coil Th
6. Materia ube OD immi WSHP PRCO03 EN Table G20 GEH GEV 120 2 compr circuit Working Pressure 425 ubes High 24 GEH 28 GEV 4 GEH 2 GEV SOR 8 refrig flow paths 2X GEH 7 refrig flow paths 2X GEV Finned vol in mm 24 x 73 x 3 464 609 x 1854 x 88 GEH h w d 28 x 73 x 1 734 711 x 1854 x 44 GEV ube OD inimm Table G21 GEH GEV 150 180 2 compr circuit Working Pressure Tubes High 24 GEH 32 GEV Tubes Deep 4 GEH 3 GEV h w d 32 x 73 x 2 598 813 x 1854 x 66 GEV Wall Thickness 0 014 Table G22 GEV 240 2 compr circuit ubes High eS 914 x 1854 x 88 0 014 ubes Deep No of Circuits Finned vol in mm h w d oil Surface Area Ft2 ins Per Inch ube Material ube OD in mm eturn Bends S TRANE Features and Benefits Design Advantages The horizontal and vertical configura tios range in capacities from 1 2 to 5 tons The innovative designs offers superior field flexibility at the jobsite along with service accessibility GEH 1 2 to 5 Ton Cabinet The GEH cabinet design includes a modular platform that utilizes similar parts and assemblies throughout the product line It is constructed of heavy gauge non painted galvanized metal for maximum durability and corrosive resistive exterior The cabinet front allows service access for the controls and refrigeration cir cuitry Water in out connection and high low voltage hook up is acco
7. and outlets Trane offers various hose kit combinations to better facilitate system flow balanc ing These flexible hoses also aid in the reduction of vibration between the unit and the rigid central piping system 2 The unit s item 2 3 4 inch high 3 voltage and item 3 1 2 inch low voltage connections are located on the left chamfered corner of the unit They are designed to accept conduit 4 A field supplied line voltage disconnect should be installed for branch circuit protection Check local codes for requirements 5 Trane s self contained pump module and hose kit make a complete pump ing package for distributed pumping systems The module is designed for circulating commercial loops that require a maximum flow rate of 20 gpm 76 Ipm Each pump module is fully assembled for connection to water and electrical points The kit contains all of the necessary components for the installation operation and maintenance of a closed loop application See WSHPC IN 5 72 9006 03 for electrical and dimensional require ments 6 The distributed pumping system supply and return lines should be WSHP PRCO03 EN a minimum pressure drop Note Pipe will sweat if low tempera ture water is below the dew point of the surrounding space Trane recommends that these lines be insulated to prevent damage from condensation when con denser loop is designed to be below 60 F 16 C Equipment installed in attic crawl space temperat
8. both directions This aids in condensate removal from the drain pan See Figure 29 for unit installation Hanging Devices and Duct Attachments All GEHA units are shipped with a fac tory mounted hanging bracket and rub ber isolation grommet The 3 8 inch 9 5 mm all thread and 3 8 inch 9 5 mm washer and nut are field pro vided One inch duct collars are provided for field duct attachment to the supply air outlet The duct collars filter racks fil ter and grommets are field installed These items are shipped in an inclo sure external to the unit See Figure 30 for unit duct collar and hanging device installation 25 26 D AIR VENT l Application Considerations Condensate Traps When designing a condensate trap for the water source system it s important to consider the unit s draw through design Under normal conditions condensate runs down the coil fins and drips into a condensate pan In situations where no trap is installed the water level that would be maintained in the trap to create a seal backflows through the drainline into the unit Because the fan pulls air through the air torefrigerant heat exchanger this incoming air stream could launch water droplets forming at the base of the coil into the air Air flowing through the coil can then spray condensate into the fan intake with the possi bility of propelling moisture into other parts of Figure 31 Condensate trap installa
9. gas reheat option for the 1 2 through 5 ton equipment Water regulating valves should not be used with the hot gas reheat option Trane places a thermal expansion valve on all water source heat pumps as well as ground source heat pumps to regu late refrigerant flow vs water flow making the heat pump more efficient to run Water source heat pumps with hot gas reheat should not be used as a make up air unit COOLING REHEAT DEHUMIMFICATION MODE W as p COMPA EQUALIZER LINE DischaRGE l DPS e m 11 l REVERSING VALVE 2 REHEAT VALVE DISTRIBUTOR WATER OUT IL a EXPANSION VALVE i WATER TO COIL e ATER IN Figure 19 Hot gas reheat heat pump option WSHP PRC003 EN REFRIGERANT rene Features and Benefits Controls by Trane Whether involved in a retrofit or new construction application Trane has the control design to fit your system requirement Our control options provide a broad range of packages from the most cost efficient 24 volt standalone to a complete building automation solution Trane is the right choice in comfort gratification The following chart provides a brief overview in the dif ferent control combinations Protocol Non Applicable Control Graphic Description Application Retrofit market where single and multiple unit replacement occurs i lockout relay Basic 24V Compressor lock
10. x 546 546 x 997 x 546 673 x 1063 x 622 546 x 997 x 546 673 x 1063 x 622 Approx weight 268 248 268 248 308 288 268 248 308 288 with pallet without pallet Ibs kg 121 112 121 112 94 131 121 112 94 131 hee Ses a 17 7 8 x 24 7 8 17 7 8 x 24 7 8 19 7 8 x 24 7 8 17 7 8 x 24 7 8 19 7 8 x 24 7 8 454 x 632 454 x 632 505 x 632 454 x 632 505 x 632 Blower Wheel in mm 10x 6 10x 6 10x 6 10x 6 12x8 Direct Drive 254 x 102 254 x 102 254 x 102 254 x 102 305 x 203 Water in out FPT in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Table G6 General Data GEV 048 to 060 Po Unit Size in mm 30 1 2x46 7 8x26 1 2 30 1 2x46 7 8x26 1 2 Length x Height x Depth 774 x 1191 x 673 774 x 1191 x 673 Approx weight 396 348 396 348 with pallet without pallet Ibs kg 178 158 178 158 Filter Size nominal in mm HUE EELS ANE EEN 708 x 759 708 x 759 10 x 10 DD Std 254 x 254 Blower Wheel in mm Direct Drive 12 x 11 Hi 305 x 279 12 x 11 Std 305 x 279 Water in out FPT in mm 1 25 1 25 Condensate size NPTI in mm 3 4 19 3 4 19 6 WSHP PRCO03 EN rane General Data Table G7 General Data GEV 072 to 180 Unit Size in mm 42 x 62 5 8 x 36 1 4 42 x 62 5 8 x 36 1 4 42 x 62 5 8 x 36 1 4 81 5 8 x 68 x 36 1 4 81 5 8 x 68 x 36 1 4 Length x Height x Depth 1067 x 1591 x 921 1067 x 1591 x 921 1067 x 1591 x 921 2073 x 1727 x
11. 2 12 5 1 2 12 5 1 2 12 5 1 2 12 5 3 4 19 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Table G2 General Data GEH 024 to 048 o Mod GEH_ 024 G Unit Size in mm 46 x 17 x 23 46 x 17 x 23 50 x 19 x 25 50 x 19 x 25 58 x 21 x 33 Length x Height x Depth 1168 x 381 x 508 1168 x 381 x 508 1270 x 483 x 635 1270 x 483 x 635 1473 x 533 x 838 Approx weight 278 248 278 248 318 288 318 288 428 398 with pallet without pallet Ibs kg 126 1 112 5 126 1 7 112 5 144 2 130 6 144 2 130 6 184 1 180 5 E OOM IEIN Carn 16 3 8 x 23 5 8 16 3 8 x 23 5 8 18 5 8 x 25 3 8 18 5 8 x 25 3 8 20 5 8 x 29 3 4 425 x 603 425 x 603 476 x 647 476 x 647 524 x 756 10x6 10x6 12x8 12x8 12 x 11 BIOMED ACCA Hat WEEE ve 254 x 102 254 x 102 305 x 203 305 x 203 305 x 279 Water in out FPT in mm 3 4 19 3 4 19 3 4 19 1 0 25 1 0 25 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Table G3 General Data GEH 060 to 150 Unit Size in mm 58 x 21 x 33 40 3 4 x 21x 79 40 3 4 x 21x 79 40 3 4 x 21x 79 46 3 4x28x85 Length x Height x Depth 1473 x 533 x 838 1035 x 533 x 2006 1035 x 533 x 2006 1035 x 533 x 2006 1187 x 711 x 2159 Approx weight 428 398 701 652 714 666 831 798 907 865 with pallet without pallet lbs kg 184 1 180 5 318 2 296 324 1 302 3 377 362 2 411 7 392 7 Fiter Size nominalinimm 20 5 8 x 29 3 4 19 5 8 x 24 5 8 x2 19 5 8 x 24 5 8 x2 19 5 8 x 24 5 8 x2
12. 4V control unit Stand alone System The 24 volt electro mechanical design may be applied as a stand alone con trol system The stand alone design provides accurate temperature control directly through a wall mounted mercu ry bulb or electronic thermostat This system set up may be utilized in a replacement design where a single unit retrofit is needed It may be easily inter faced with a field provided control sys tem by way of the factory installed 18 pole terminal strip This stand alone control is frequently utilized on small jobs where a building controller may not be necessary or where field installed direct digital con trols are specified This type of control design does require a constant flow of water to the water source heat pump With a positive way to sense flow to the unit the units safety devices will trigger the unit off The stand alone system design pro vides a low cost option of installation while still allowing room control for each unit See Figure 22 for 24 volt stand alone system controls WSHP PRCO03 EN Deluxe 24V Electronic Controls The deluxe 24V electronic unit control provides component protection devices similar to the basic design but contains upgraded features to maximize system Features Include 75 VA transformer Cl Compressor contactor D Compressor lockout relay O Compressor run capacitor for 1 phase units only o Anti short cycle compressor protection T
13. 921 2073 x 1727 x 921 Compressor Type Reciprocating 2 Reciprocating 2 Scroll 2 Scroll 2 Scroll 2 Approx weight 617 577 648 608 861 821 1215 1170 1225 1180 with pallet without pallet Ibs kg 280 262 294 276 391 373 5527531 556 536 E a Et RAGa 19 5 8 x 19 5 8 4 19 5 8 x 19 5 8 4 19 5 8 x 19 5 8 4 19 5 8 x 24 5 8 6 19 5 8 x 24 5 8 6 498 x 498 4 498 x 498 4 498 x 498 4 498 x 625 6 498 x 625 6 Blower Wheel in mm 12 625 x 12 625 12 625 x 12 625 12 625 x 12 625 15x 15 15x 15 Direct Drive 321 x 321 321 x 321 321 x 321 381 x 381 381 x 381 Water in out FPT in mm 1 1 4 32 1 1 4 32 1 1 2 38 1 1 2 38 1 1 2 38 Condensate size NPTI in mm 3 4 19 3 4 19 3 4 19 3 4 19 3 4 19 Table G8 General Data GEH 240 Unit Size in mm 81 5 8 x 68 x 36 1 4 Length x Height x Depth 2073 x 1727 x 921 Compressor Type Scroll 2 Approx weight 1615 1580 with pallet without pallet Ibs kg 733 717 Regular High Static 381 x 279 2 321 x 321 2 WSHP PRC003 EN 7 S TRANE General Data Table G9 GEH GEV 006 No of Crous 7 1 Finned vol in mm 14 x 16 x 1 734 H xW x D 356 x 406 x 44 Table G10 GEH GEV 009 h w d 356 x 406 x 66 Table G11 GEH GEV 012 h w d 356 x 406 x 66 Table G12 GEH 015 018 024 TubesDeep No of Circus Finned vol in mm 16 x 19 x 3 464 h w d 406 x 483 x 88 Table G13 GEV 015 018 024 030 Tu
14. Because the ZN510 and ZN524 is LonTalk certified it is capable of work ing with and talking to other LonTalk certified controllers providing the build ing owner more choices and the design engineers more flexibility to meet the challenges of building automation See Figure 26 for ZN510 control box 4 POLE POWER CONNECTION 75 VA TRANSFORMER for 7 2 thru 5 ton units A LOW VOLTAGE CONNECTION 21 S TRANE Features and Benefits Direct Digital Controls When the ZN510 or ZN524 controller is linked directly to the Tracer Summit each Tracer Summit building automa tion system can connect a maximum of 120 Tracer ZN510 or ZN524 controllers See Figure 27 for the Tracer ZN524 board Tracer ZN524 board Tracer ZN510 and ZN524 functions include Compressor Operation The compressor is cycled on and off to meet heating or cooling zone demands Single and dual compressor units use the unit capacity and pulse width mod ulation PWM logic along with mini mum on off timers to determine the compressor s operation The compres sor is controlled ON for longer periods as capacity increases and shorter peri ods as capacity decreases Random Start To prevent all of the units in a building from energizing major loads at the same time the controller observes a random start from 0 to 25 seconds This timer halts the controller until the ran dom start time expires Reversing Valve Operation For
15. P PRC003 EN Features and Benefits rane Schrader Connections 1 2 to 5 ton The connections for the low and high side of the refrigeration system are located directly beside the control box at the front service access panel See Figure 11 for schrader connection lotion Co axial Water to Refrigerant Coil The unit s internal heat exchanging water coil is engineered for maximum heat transfer The copper or cupro nickel seamless tubing is a tube within a tube design The inner water tube contains a deep fluted curve to enhance heat transfer and minimize fouling and scaling It is available in either copper or cupro nickel selectable option coil The outer refrig erant gas tube is made from steel mate rial The coil is leak tested to assure there is no cross leakage between the water tube and the refrigerant gas steel tube coil Co axial heat exchangers are more tolerant to freeze rupture See Figure 11 for co axial water coil Compressor and Co axial Coil Isolation 1 2 to 5 ton Vibration isolation of the compressor and co axial water coil is accomplished by increasing the rigidity and stiffness at the base The platform provides double isolation to the compressor and single isolation to the co axial water coil for additional attenuation during compres sor start and stop Water Connections 1 2 to 5 ton The water in water out connections to the co axial water coil are located on the right hand chamfered
16. TRANE High Efficiency Horizontal and Vertical Water Source Comfort System Axiom 1 2 20 Tons 50 Hz Vertical Model GEV 1 2 12 1 2 Tons 50 Hz Horizontal Model GEH WSHP PRCOOS3 EN S TRANE Introduction Imagine a full range of comfort utilizing efficiency sound attenuation integrated controls and superior maintenance accessibility Trane imagined it designed it and built it The Axiom line of vertical and horizontal water source heat pumps help create an advanced comfort system for comfort solutions The entire range of Axiom units 1 2 ton to 20 tons is designed with the highest standards in mind Ease of maintenance Indoor air quality Quieter operation and higher efficiencies And all unit are rated in accordance to ARI ISO 13256 1 performance and ASHRAE 90 1 standards With several size options the Axiom line of water source heat pumps is per fect for small to medium sized office Co axial heat exchanger Thermal expansion valve Fan Blower section Water Connections Model 120 GEH Model 012 GEH buildings schools manufacturing facili ties health care facilities condomini ums and just about any other light commercial application The following is a list of design improvements contained within all Axiom units 1 Maximum return supply air options 2 Superior maintenance accessibility 3 Dual sloped plastic drain pan 4 Multiple fa
17. Thermostats and Zone Sensors Options Mechanical Specifications 10 10 17 25 29 25 30 72 75 117 120 134 135 143 171 180 181 185 S TRANE Model Number Horizontal Vertical Water Source Confort System G E H B 03691D0110DLD010N001100010000000 5 10 15 20 25 30 DIGITS 1 3 UNIT CONFIGURATION GEH High Efficiency Horizontal GEV High Efficiency Vertical DIGIT 4 DEVELOPMENT SEQUENCE B DIGITS 5 7 NOMINAL CAPACITY 006 1 2 Ton 072 6 Ton 009 3 4 Ton 090 7 1 2 Ton 012 1 Ton 120 10 Ton 015 1 1 4 Ton 150 12 1 2 Ton 018 1 1 2 Ton 180 15 Ton 024 2 Ton 240 20 Ton 030 2 1 2 Ton 036 3 Ton 042 3 1 2 Ton DIGIT 8 VOLTAGE Volts Hz Phase 6 220 240 50 1 9 380 415 50 3 DIGITS 9 HEAT EXCHANGER 1 Copper Water Coil 2 Cupro Nickel Water Coil DIGIT 10 CURRENT DESIGN SEQUENCE DIGIT 11 REFRIGERATION CIRCUIT 0 Heating and Cooling Circuit 2 Heating and Cooling Circuit with Hot Gas Reheat 3 Heating and Cooling Circuit with Waterside Economizer 4 Heating and Cooling Circuit with HGR and WSE A Cooling ONLY Circuit C Cooling ONLY Circuit with Hot Gas Reheat D Cooling ONLY Circuit with Waterside Economizer E Cooling ONLY Circuit with HGR and WSE DIGIT 12 BLOWER CONFIGURATION 1 Standard Blower Motor 2 High Static Blower Motor A Drive Package A GEH GEV B Drive Package B GEH GEV C Drive Package C GEH GEV D Dri
18. ant coil then reheated by the reheat coil to control not only the space temperature but to also reduce the relative humidity of the space The moisture removal capability of a specif ic heat pump is determined by the units latent capacity rating When operating in the reheat mode meaning the sensible temperature has been met in the space the humidistat signals the reheat relay coil to energize allowing the high pressure refrigerant gas to flow from the 1 compressor through the 2 reheat valve into the 3 reversing valve or through the 4 reheat coil for dehumidification See Figure 19 A switching relay has been provided for the reheat application to adjust the blower motor from normal operation to low speed when hot gas reheat is energized Note Trane places an air separation space between the air to refrigerant coil and the reheat coil to allow for maximum moisture removal Common Reheat Applications The hot gas reheat option is designed to support building applications requir ing fresh air ventilation units delivering unconditioned air directly to the space It also provides dehumidification to large latent load spaces such as audito riums theaters and classrooms or any where humidity control is a problem 16 Proper Hot Gas Design The factory installed hot gas reheat option is only available with Deluxe or ZN524 controls packages A high static blower motor option will be required to support the hot
19. ater temperature reading is taken The determination as to whether or not to utilize electric heat will be made and the controller will take appropriate action If boilerless electric heat is enabled then the isolation valve will be closed shutting down the water flow to the unit When the unit is configured for concur rent operation of DX heating compres sor in heat pump mode and electric heat the electric heat will act as a sec ond stage of heat for single compressor units and a third stage of heat for dual compressor units Note With concur rent or supplemental electric heat the electric heater is field provided Water Isolation Valves Variable soeed pumping systems are supported by the ZN524 controller when water isolation valves are pres ent Up to two isolation valves are sup ported by the controller one for each compressor circuit The valves are normally closed unless DX heating DX cooling waterside economizer or dehumidification is requested When the isolation valves rene Features and Benefits are driven open for operation the out puts will be driven for 20 seconds to ensure adequate water flow before the compressor outputs are energized Once an isolation valve has been opened it will remain open for a 10 minute minimum to reduce excessive cycling of the valve Dehumidification Dehumidification for the single and dual circuited water source heat pump is applicable with the ZN524
20. ation BACK SUPPLE AIR A T SUPPLY AIR LEFT RETURA M AIR AlGHT SLIFPLY AIA MOTOR F LEFT RETURAN AIR AlGHT RETURN AIR DRAIN BACK SUPPL Ann E BREY VALVE WATE R OUT Wi LEIA Figure 2 Component platform location LEFT SUPPLAAIA Figure 3 Large ton GEH air side combinations WSHP PRCO03 EN GEH GEV 6 to 20 Ton Cabinet The cabinet design incorporates sturdy non painted galvanized metal form maximum durability and corrosive resistive exterior The equipment offers superior installation flexibility with service accessibility The cabinet front allows service access for the controls The new horizontal and vertical design offers four product vari ations of return air and supply air com binations All combinations are order specific and may not be modified at the job site See Figure 3 for air side combi nations Hanging the horizontal configuration is accomplished through the robust metal stiffeners located beneath the unit Optional vibration isolators are avail able to help decrease sound vibration during equipment operation Airflow Options 1 2 to 5 ton The GEH model configuration may be built to order or modified on site to meet unique installation requirements The six combinations include same side supply and return air capabilities for added installation flexibility See Figure 4 for the six field convertible combinations Supply Air Ret
21. bes Deep No of Circans 4 Finned vol in mm 21 x 16 x 3 464 Wall Thickness 0 014 Table G14 GEH GEV 030 036 TubesDeep 47 Finned vol in mm 18 x 21 x 3 464 h w d 457 x 533 x 88 Table G15 GEH 042 048 425 ubes High ubes Deep nzala s 3 O oO gt ollo xz a 5 lt OD Q lt a a F fa t i 3 o O 3 3 3 a N 20 x 29 x 3 464 508 x 737 x 88 4 03 12 Copper 3 8 10 0 014 Copper g oil Surface Area Ft2 ins Per Inch ube Material ube OD in mm 1 DS a Sy E ER mr O A 3 D ep n eturn Bends Table G16 GEV 042 048 Working Pressure ubes High ubes Deep No of Circuits No IS 24 x 25 x 3 464 610 x 635 x 88 477 T J iq Q lt a F 1 1 WSHP PRC003 EN rw General Data Table G17 GEH GEV 060 2 compr circuit Tubes Deep CM F d vol 0 0 uits inned vol in mm 18 x 48 x 3 464 457 x 1219 x 88 GEH h w d 24 x 34 x 3 464 609 x 864 x 88 GEV ube OD in mm Table G18 GEH GEV 072 2 compr circuit TubesDeep CSCS 6 refrig flow paths 2X GEH 7 refrig flow paths 2X GEV h w d 28 x 34 x 3 464 711 x 864 x 88 GEV Wall Thickness 0 014 Table G19 GEH GEV 090 2 compr circuit TubesDeep o SSS Finned vol in mm 18 x 73 x 3 464 457 x 1854 x 88 GEH h w d 36 x 34 x 3 464 914 x 864 x 88 GEV oil Surface Area Ft2 9 125 GEH 8 50 GEV ube
22. controller The controller is capable of directing one stage of DX cooling in conjunction with one stage of reheat hot gas reheat Dehumidification can only occur when the controller is in the cooling mode A humidity transmitter is used to meas ure the zone s relative humidity RH then compares the zone relative humid ity to the relative humidity enable dis able setpoint parameters The default values for dehumidification enable is 60 RH with the disable point at 52 RH These values are configurable 23 S TRANE 24 Features and Benefits Building Control Advantages The Tracer ZN510 ZN524 controller has the ability to share information with one or several units on the same com munication link This sharing of infor mation is made possibe via a twisted pair of wire and a building automation system or through Trane s Rover TM service tool An advantage of installing a ZN510 ZN524 is its capability to work with other LonTalk certified controllers This provides greater flexibility to the building owner as well as greater flexi bility in design ee ee ee TRACER SUMMIT E ZONE SENSOR SINGLE ae COMMUNICATION N WIRE FIELD PROVIDED TO _L OTHER UNITS Integrating the ZN510 ZN524 on water source equipment and tying it to a Tracer Summit system provides a com plete building management system Each Tracer Summit can connect to a maximum of 120 controlle
23. cooling the reversing valve output is energized simultaneously with the compressor It will remain energized until the controller turns on the com pressor for heating At this time the reversing valve moves to a de ener 22 Figure 27 gized state In the event of a power fail ure or controller OFF situation the reversing valve output will default to the heating de energized state Fan Operation The supply air fan operates at the facto ry wired speed in the occupied or occu pied standby mode When switch is set to AUTO the fan is configured for cycling ON with heating or cooling In heat mode the fan will run for 30 sec onds beyond compressor shutdown in both occupied and unoccupied mode Fan Run Timer The controller s filter status is based on the unit fan s cumulative run hours The controller compares the fan run time against an adjustable fan run hours limit and recommends unit mainte nance as required Data Sharing The Tracer ZN510 ZN524 controller is capable of sending or receiving data setpoints fan request or space tem perature to and from other controllers on the communication link This allows multiple units to share a common space temperature sensor in both stand alone and building automation applications Night Setback The four operations of the Tracer ZN510 ZN524 controller include occu pied occupied standby occupied bypass and unoccupied In an occupied situation the controller
24. corner of the unit The fittings are mounted flush to the chamfered wall to help limit shipping damage The water connection devices are con structed of copper or bronze material and include a National Female Pipe Thread NFPT junction The connections are attached to the unit s chamfer corner to alleviate the need for a back up wrench during installation See Figure 12 for water connection device Water Connections 6 to 20 ton Water hookups for the 6 through 20 ton units are located internal to the equip ment to help alleviate damage to the water copper during shipment or job storage of units prior to installation Each unit although dual circuited con tains a single supply and return water connection See Figure 13 for large ton nage water hook up model GEV Fittings for the supply and return are internally threaded Expansion Valve All Trane water source systems include an expansion valve flow metering device This thermal expansion valve TXV allows the unit to operate with an entering fluid temperature from 25 F 3 9 C to 110 F 43 C and entering air tem peratures from 40 F 4 4 C to 90 F 32 C The valve is designed to meter refriger ant flow through the circuitry to achieve desired heating or cooling The expansion valve device allows the exact amount of refrigerant required to meet the coil load demands This precise metering by the TXV increases the effi ciency of the unit Reversing Valve A s
25. e When the conditions are met the isolation valve s are driven open for three minutes and the EWT reading is taken The determination as to whether or not the economizer can be enabled will be made and the controller will take appropriate action The isola tion valve will remain open regardless if the WSE or the DX cooling is enabled The unit s waterside economizer will contain a 2 position water valve wired to the ZN524 The economizing water coil will be optimized to provide 100 of the unit capacity at 80 6 F 66 2 F 27 0 10 0 C return air temperature with 45 F 7 C entering water The flow rate is established at 86 F 30 C entering water temperature and 96 F 36 C leav ing water temperature WSHP PRCO03 EN Low leaving air protection will be fur nished to protect the unit against deliv ering air that is cold enough to sweat discharge air grilles Coil icing protec tion will also be provided Waterside economizer cooling will be active during occupied unoccupied and standby cooling modes Boilerless Control Electric Heat and Supplemental Electric Heat The ZN524 supports a single stage of boilerless electric heat operation or concurrent heating When the unit is configured for boiler less control the EWT will be used to determine whether DX heating should be disabled and the electric heater enabled When these conditions are met the isolation valve s are driven open for three minutes and the enter ing w
26. e air to refrigerant heat exchanger is constructed of staggered copper tubes with die formed corrugated lanced alu minum fins The fins are then mechani cally bonded to the tubes through expansion The coil is placed internal of the unit design for the GEH model to provides an optional dual filtration application With dual filtration to the GEH unit maintenance to the filter is significantly less than with a single filtration system This design also offers maximum flexi blity of the supply and return air config urations The maximum working pressure for both the GEH and GEV coils is 450 psig It is designed for maximum capacity with an additional benefit of physical unit size reduction Figure 16 6 to 20 ton blower motor and fan belt assembly WSHP PRCO03 EN rane Features and Benefits Boilerless Control Electric Heat option The boilerless electric heat option is composed of a nichrome open wire design This single stage of electric heat is used as a primary heating package to lock out compressor operation in the event that entering water tempera tures reach below 58 F 14 4 C On a call for heating the electric heater is activated locking out the compres sor Once the entering water tempera ture rises above 58 F 14 4 C the unit resumes normal compressor heating operation For geothermal applications the boilerless controller is adjustable The ranges are 25 35 45 55 and 60 deg
27. e high pressure control and low pressure control automatically reset If a second fault is detected with in a thirty minute time span the unit must be manually reset Condensate Overflow When condensate reaches the trip point a condensate overflow signal generates a diagnostic which disables the fan unit water valves if present and compressor The unit remains in a halted state until the condensation returns to a normal level The switch in the drain pan will then automatically reset The controller s condensate over flow diagnostic must be manually reset to clear the diagnostic and restart the unit WSHP PRC003 EN More ZN524 Controller Functions When the building owners choice is Trane Tracer controls the ZN524 con troller is required when any of the fol lowing applications are selected on a single and dual circuited equipment e Waterside Economizer e Hot Gas Reheat Dehumidification e Boilerless Control for Electric Heat e Water Isolation Valve Control for Variable Speed Pumping Entering Water Temperature Sampling The ZN524 controller will sample the entering water temperature to deter mine proper control action for units equipped with boilerless electric heat or waterside economizer Waterside Economizer Entering water temperature EWT sam pling will automatically occur at power up when the unit is equipped with a waterside economizer WSE The EWT is used to determine if economizing is feasibl
28. ell as outputs for unit status and fault detection Each device is factory installed commis sioned and tested to ensure the high est level of quality in unit design Each of the controller s features and options were selected to coordinate with the unit hardware to provide greater energy efficiency and equip ment safety to prolong the equipment life In addition to being factory configured for control of the unit fan compressor and reversing valve the ZN510 and ZN524 controllers are designed to coor dinate the waterside of the water source system through the Tracer Loop Controller TLC If applied in a peer to Figure 26 ZN510 ZN524 control box THE 28676 BOARD INCLUDES HIGH PRESSURE CUT OUT RANDOM START DELAY HEATING CHOUNS STATUS OCCUPIER SUNOCCUPIED MODE STATUS ALTER MAINTENANCE TIMER DATA SHLAA LOW PRESSURE FAEESE SEAL LED DIAGNOSTICS ANTI SHOAT CROLE LONTALE OPEN PROTIHCAL COMPRESSOR CONTACTOR peer communication environment data between similar controllers may be exchanged without requiring a building automation system By teaming the ZN510 and ZN524 with the TLC a low first cost for the mechan ical equipment water loop and water pump optimization is provided to the owner For owners who require a full building integrated open protocol system The ZN510 ZN524 TLC application is upgradable to support complete build ing control through Tracer Summit
29. ith a rubber gasket at all four edges to help eliminate air from escaping around the panel s edge See Figure 8 for GEV panel design Drain Pan The unit drain pan is composed of plas tic corrosive resistive material The pan is positively sloped to comply with ASHRAE 62 for IAQ indoor air quality conformity See Figure 9 to view the plastic drain pan Cabinet Insulation All model cabinet insulation design meets UL 181 requirements The air stream surface of the insulation is fabri cated of a non biodegradable source Refrigeration Piping The unit s copper tubing is created from a 99 pure copper formation that con forms to the American Society of Testing ASTM B743 for seamless light annealed processing The unit s copper refrigeration system is designed to be free from contaminants and conditions such as drilling frag ments dirt or oil This excludes the pos sibility of these contaminants from dam aging the compressor motor Compressor 1 2 to 5 ton The unit s design includes a wide variety of compressor motors to accommodate dedicated voltages and tonnage sizes For more details See General Data Tables pages 5 7 Figure 8 Large ton GEV panel design Figure 9 Plastic drain pan Figure 10 Reciprocating compressor WSHP PRCO03 EN COPPER FLATEY Figure 12 Water connections small ton i Figure 13 Water connections large ton Figure 14 Thermal expansion valve WSH
30. ly design increases the overall unit length of the system to accommodate a 90 degree duct turn This not only requires added space but also adds cost in both mate rials and installation Additional value to the design is acquired through the same side sup ply return air design This design elimi nates a requirement for a four sided service access When installing the Ligsiigns that pirside anly appasie supply ar emd supply arrangements fonae dual wurk outas thia orendll lenges ol fhe umit Figure 32 Same side supply return air and end supply arrangements with ductwork 28 same side return supply air access a brief 3 inch minimum is all that is required between the unit and the wall Service Access To add more value in installation requirements the same side supply return design eliminates the need for a four sided service access See Figure 34 When installing the same side return supply access a small 3 76 mm minimum space is required between the unit and wall Units that contain the same slde supply alr and r aturr air arrngernarnl are real lirmitad to 4 side servis ACCES Figure 33 Service access requirments WSHP PRCO03 EN
31. m plished at the 45 degree corners on the front side of the equipment The unit offers six product variations of return air and supply air combinations which may be order specific or job site modified See Figure 1 component plat form location GEV 1 2 to 5 Ton Cabinet The vertical design model GEV includes a modular platform utilizing similar parts and assemblies to the hor izontal to provide a repetitious look and feel for installation and maintenance personnel It is constructed of heavy gauge non painted galvanized metal for maximum durability and corrosive resistive exterior The cabinet front allows service access for the controls and refrigeration cir cuitry Water in out connection drain connection and high low voltage hook up Is accomplished at the 45 degree chamfered corners on the front side of the equipment The vertical design offers four product variations of return air and supply air combinations The GEV model s supply air arrange 10 ment may be field converted through a service kit to aid in stocking of a single unit variation See Figure 2 for compo nent platform location HANGING DEVICE THERMAL EXPANSION VALVE WATER IN OUT MOUNTED x z E 8 zi gz amp g zz 5 ZR ar E 4 ag UNIT ae Sel a d 35 FRONT v4 zo 65 a Es 20 lt amp a wi oO oO a 4 a 2 z OR SENSOR LEFT RETURN AIR ARRANGEMENT Figure 1 GEH Component platform loc
32. m the refriger ant high pressure switch low suction pressure switch and condensate over flow In a high pressure situation the com pressor contactor is de energized which suspends compressor operation The control will go into soft lockout mode initializing a three minute time delay and a random start of 3 to 10 sec ond time delays Once these delays have expired the unit will be allowed to run If a high pressure situa tion occurs within one hour of the first situa tion the control will be placed into a manual lockout mode halting compressor operation and initiating the gener al alarm In a low temperature situation the low pres sure switch will transi tion open after the com pressor starts If the switch is open for 45 seconds during compressor start the unit will go into soft lockout mode initializing a three minute time delay and a random start of 3 to 10 second time delays Once these delays have expired the unit will be allowed to run If the low pressure situation occurs again within 30 min utes and the device is open for more than 45 seconds the control will be placed into a manual lockout mode halting compressor operation and initi ating the general alarm In a condensate overflow situation the control will go into manual lockout mode halting compressor operation and initiating the general alarm The general alarm is initiated when the control goes into a manual lockout mode for ei
33. n speed motor packages 5 Quieter unit design Integrated controls gt mpressor The water in and water out are internal to the sturdy casing to eliminate shipping and storage damage The GEVs dual sloped non corrosive drain pan is easy to clean and positively sloped to comply with ASHRAE 62 6 Integrated controls 7 Dual circuit design 8 High and low pressure safeties in all units 9 Dehumidification options 10 Waterside economizer option 11 Supplimental electric heat options 12 Orifice ring motor mounting device on all 5 ton and smaller units 13 Internal air to refrigerant coil 1 2 5 ton horizontals Model 180 GEV Drive packages for the GEV provide a large variation in external static pressures Control packages for the GEV unit include 24volt micro processing controls to a full blown direct digital control system assembly is easily serviceable and incorporates some of the latest safety devices available to protect the more expensive components WSHP PRC003 EN WSHP PRCO03 EN Contents Introduction Model Number Descriptiom General Data Features and Benefits Options Controls Application Considerations Performance Data Electrical Performance Cool and Heat Performance English Correction Factors English Cool and Heat Performance Metric Correction Factors Metric Fan Performance English Metric Sound Data Control Wiring Dimensional Data Accessories
34. omplete Yes compatible control of the water loop and Comm 5 pumps E Microprocessor based Tracer Loop s controller that coordinates the Controller water side boiler pumps cool ing tower etc of a water source heat pump system Microprocessor based Wherever the Tracer ZN510 controls controller that coordinates boil or 24 volt electro mechanical er pumps cooling tower etc es controls are specified for complete of a water source heat pump Tracker system Customized alarms ate of the water loop and Yes scheduling trending safety i features LonTalk compatible Comm 5 New and retro fit light commercial Controls up to 100 wshp s applications Microprocessor based controller that coordinates full building automation from HVAC to lighting BACnet Where any controller is specified Yes Comm 2 3 4 amp 5 WSHP PRC003 EN 17 S TRANE Features and Benefits 4 POLE POWER CONNECTION COMPRESSOR LOCKOUT RELAY COMPRESSOR CONTACTOR 18 POLE LOW VOLTAGE CONNECTION Figure 20 Basic 24 volt control box Figure 22 24 volt stand alone system 18 50 VA TRANSFORMER Basic 24 Volt Controls The basic 24 V electromechanical unit control provides component protection devices for maximum system reliability Each device is factory mounted wired and tested See Figure 20 for the unit control box Features Include 50 VA transformer Com pres
35. out relay low and high pressure switches jaw building design where field provided controls are specified F a ji a x Wo 24 volt microprocessor Retrofit market where single and UE A 2 i designed to provide control of multiple unit replacement occurs ee j t the entire unit as well as multi Deluxe 24V AALT j UN iE ple relay offerings to maximize Multi unit installation where units gd gt oee system performance Can con may be daisy chained directly to i E nect to a 24V thermostat the Trane Tracer Loop Controller Retrofit market where overall sys Direct Digital Control board tem upgrade is specified a tN ain designed to provide control of SCC LonTalk Tracer ZN510 ee OP eee the entire unit as well as out Multi unit 100 installation where Yes open protocal en eee a puts for unit status and fault units are linked by a common twist Comm 5 detection ed pair of wire for a communication link Non Ne Applicable Retrofit market where overall sys tem upgrade is specified Direct Digital Control board SCC LonTalk Tracer ZN524 designed to provide control of Vutti unit 100 installation where Yes open protocal the entire unit as well as out l units are linked by a common twist Comm 5 puts for unit status and fault re detection ed pair of wire for a communication l link Wherever the Tracer ZN510 controls or 24 volt electro mechanical LonTalk controls are specified for c
36. rees F 3 9 1 7 7 2 12 8 15 6 C Trane factory sets the controller to 55 degrees F prior to shipment See Figure 17 for boilerless control electric heat diagram Waterside Economizer option The beauty of the waterside economiz er is it s ability to take advantage of any loop condition that results in cool water temperatures A prime example would be during fall winter and spring when cooling towers have more capacity than required and could be controlled to lower temperatures for economizer support Another more common inexpensive means of free comfort cooling includes buildings systems where perimeter heating and core cooling are needed In this system the perimeter units extract heat from the building loop while in the heating mode forcing the building loop temperature to drop Where as the core are of a building may require cooling in summer or in winter based upon light ing people and equipment WSHP PRCO03 EN THERMAL EXPANSION VALVE ENTERING WATER SENSOR f he 2 WATERIN ELECTRIC HEATING OPES f COIL UNN 1A WATER OUT X f iM PROS Se oy 1 a a 4 j i i i l REVERSING f at EE HHP VALVE BOILERLESS a i lee CONTROLLER WATER TO REFRIG hia R AIR TO REFRIGERANT E ee ELECTHT COMPR CONTACTOR Figure 17 Boilerless control electric heat diagram If the water source system design contained an econo mizing coil option the mod erate
37. rs With the ICS system the Tracer can initiate an alarm on a loss of performance on equipment malfunctions allowing problems to be handled in a timely manner before compromising comfort This type of application would most commonly be used for a large space s that may require more than one unit In addition to this application design the Tracer ZN510 ZN524 controller provides a way for units located within the same space to share the same zone sensor to prevent units from simultaneously heating and cooling in the same space See Figure 28 for Tracer ZN510 ZN524 controller system Figure 28 Tracer ZN controller system installation WSHP PRCO03 EN Application Considerations rene Figure 29 Horizontal unit installation SUPPLY AIR BOOT FIELD SUPPLIED Slope 1 4 6 5 mm 1 INGH DUCT COLLAR FACTORY PROVIDED Figure 30 Unit duct collar and hanging device installation RETURN AIR SUPPLY AIR 3 8 ALL TH A A BY OTHERS 3 8 WASHER NUT BY OTHERS WSHP PRCO03 EN Hanging the Horizontal The horizontal unit GEH A is a ceiling hung unit It is usually applied as a totally concealed unit above an acousti cal ceiling grid Because the GEH A is equipped with several inlet and dis charge arrangements it allows for numerous application needs When hanging the horizontal design the unit should be pitched approxi mately 1 4 inch 6 4 mm per foot toward the drain in
38. sor co ntactor Compressor run capacitor for single phase units General alarm Low pressure safety High pressure switch Lockout relay Reversing valve coil for heating and cooling units Multi speed fan motor 18 pole terminal strip for low voltage field wiring Optional Condensate overflow Safety Devices System safety devices are provided through the use of low high pressure switches in the refrigeration circuit to help prevent compressor damage The switch and sensor are set to activate at refrigerant pressures of 20 psig to fit most applications In cases where a low charge or exces sive loss of charge occurs each com pressor comes equipped with an exter nal overload device to halt the com pressor operation The high pressure switch prevents compressor operation during high or excessive discharge pressures that exceed 395 psig A lockout relay provides the mechanical communication of the low and high pressure switches to prevent compres sor operation if the unit is under low or high refrigerant circuit pressure or dur ing a condensate overflow condition The lockout relay may be reset at the thermostat or by cycling power to the unit General alarm is accomplished through the lockout relay and is used in driving light emitting diodes This feature will drive dry contacts only and cannot be used to drive field installed control inputs See Figure 21 for unit safety devices on the basic 2
39. tback Relay DIGITS 22 ELECTRIC HEAT 0 No Electric Heat 1 Internal Boilerless Electric Heat DIGITS 23 UNIT MOUNTED DISCONNECT 0 No Unit Mounted Disconnect DIGITS 24 FILTER TYPE 0 1 Filter No Duct Flange 1 1 Throwaway Filter 2 2 Throwaway Filter DIGITS 25 ACOUSTIC ARRANGEMENT 0 Enhanced Sound Attenuation 1 Deluxe Sound Attenuation DIGITS 26 FACTORY CONFIGURATION 0 Standard Factory Configuration DIGITS 27 PAINT COLOR 0 No Paint Selection Available DIGITS 28 OUTSIDE AIR 0 No Outside Air Option Available DIGITS 29 PIPING ARRANGEMENT 0 Standard Piping Arrangement 1 Standard Piping with Schrader Connection for Water Regulating Valve DIGITS 30 36 DOES NOT APPLY TO GEH or GEV WSHP PRCO03 EN rw General Data Table G1 General Data GEH 006 to 018 Unit Size in mm 40 x 15 x 20 40 x 15 x 20 40 x 15 x 20 46 x 17 x 23 46 x 17 x 23 Length x Height x Depth 1016 x 381 x 508 1016 x 381 x 508 1016 x 381 x 508 1168 x 432 x 584 1168 x 432 x 584 Approx weight 188 158 188 158 188 158 188 158 278 248 with pallet without pallet Ibs kg 85 3 71 7 85 3 71 7 85 3 71 7 85 3 71 7 126 1 112 5 EN 14 5 8 x 20 1 4 14 5 8 x 20 1 4 14 5 8x20 1 4 14 5 8 x 20 1 4 16 3 8 x 23 5 8 375 x 517 375 x 517 a 57 425 x 603 425 x 603 l 9x4 9x4 9x4 9x4 9x6 Blower Wheel in mm Direct Drive 229 x 102 229 x 102 229 x 102 229 x 102 229 x 152 Water in out FPT in mm 1
40. temperature loop water circulated through a core water source system can provide an inexpensive means to satisfy room com fort without operating the water source heat pump s compressor During economizer mode fluid enters the unit and passes by a water tempera ture sensing bulb This tem perature sensing bulb deter mines whether the two posi tion three way valve will direct the water through the waterside economizing coil and to the heat pump condenser or through the condenser only If the water tempera ture is 55 F or less fluid will flow into the economizing coil while simultane ously halting mechanical operation of the compressor Figure 18 Model GEH with Waterside Economizer package Mechanical cooling will continue on a call for second stage from the thermo stat The factory built waterside econo mizer is available on all 1 2 to 5 ton GEH models The 1 2 through 5 ton GEV may be ordered to accept a field pro vided waterside economizing package See Figure 18 Model GEH with Waterside Economizer package 15 S TRANE Features and Benefits Hot Gas Reheat option For space conditioning and climate con trol Trane provides an accurate and cost effective dehumidification control through a hot gas reheat option This option is designed to accommodate unit sizes 012 036 060 and 072 through 240 With this reheat option the return air from the space is conditioned by the air to refriger
41. ther high pressure low pressure or condensate overflow condi tions Diagnostics Component device connections to the microprocessor board are referenced in Figure 25 Three LEDs light emitting diodes are provided for indicating the operating mode of the controller See the unit IOM for diagnostics or trou bleshooting through the use of the LEDs OVERFLOW switch Figure 25 Deluxe 24V control board WSHP PRCO03 EN 7N510 amp ZN524 Features Include 75 VA transformer Compressor contactor Compressor lockout relay Compressor run capacitor for 1 phase units only Random start delay Heating cooling status Occupied unoccupied mode Low pressure switch High pressure switch Fan and filter status Reversing valve coil for heating and cooling units Multi speed fan motor 18 pole terminal strip for low voltage field wiring Optional Condensate Overflow Additional Features of the 7N524 Include 75VA or 100 VA transformer Water isolation valve support for variable speed pumping Optional Boilerless control for electric heat Optional WaterSide economizer Optional Hot gas reheat for dehumiditication WSHP PRCO03 EN rene Features and Benefits Tracer ZN510 amp ZN524 Controls The Tracer ZN510 and ZN524 are direct digital control DDC systems specifical ly designed for single and dual circuited water source equipment to provide con trol of the entire unit as w
42. tion RETURN AIR FILTER N NEGATIVE PRESSURE TRAPPING H 1 25 4 mm FOR EVERY 1 25 4 mm OF MAXIMUM NEGATIVE STATIC PRESSURE 1 25 4 mm HALF OF H H J PIPE DIAMETER INSULATION BLOWER MOTOR ACCESS PANEL the mechanical system This aerosol mist can be carried through the ducts and into the conditioned air space Another problem with air backflow is the source of that air Drain lines typically flow into waste or sewage lines giving the potential to introduce methane and other contaminants from the drain system into the airstream In a properly trapped system when conden sate forms during normal operation the water level in the trap rises until there is a constant outflow See Figure 31 for the appropriate dimensions required in designing a negative pressure system SUPPLY AIR CLEAN OUT CAPPED WSHP PRCO03 EN rene Application Considerations Distributed Pumping System sized to handle the required flow with 7 For acoustically sensitive areas a six A distributed pumping system contains either a single or dual pump module specifically sized for each water source heat pump then connected directly to the units supply and return lines The distributed system s supply and return lines should be sized to handle the required flow with a minimum pres sure drop Hose kits are used to connect the water supply and return line to the water inlets
43. unction measures the input voltage to the con troller and halts the compressor opera tion Once a brown out situation has occurred the anti short cycle timer will become energized The general fault contact will not be affected by this con dition The voltage will continue to be monitored until the voltage increases The compressors will be enabled at this time if all start up time delays have expired and all safeties have been sat isfied Compressor Disable The compressor disable relay provides a temporary disable in compressor operation The signal would be provid ed from a water loop controller in the system It would disable the compres 20 sor because of low water flow peak limiting or if the unit goes into an unoc cupied state Once the compressor has been disabled the anti short cycle time period will begin Once the compressor disable signal is no longer present and all safeties are satisfied the control will allow the compressor to restart Generic Relay The generic relay is provided for field use Night setback or pump restart are two options that may be wired to the available relay Note Night setback is available as factory wired An external Class Il 24VAC signal will energize the relay coil on terminals R1 and R2 Terminals C common NO normally open and NC normally closed will be provided for the relay contacts Safety Control The deluxe microprocessor receives separate input signals fro
44. ures below 40 F 4 C may require antifreeze in the water loop inch deep fiberglass insulation is recommended to be field installed below the horizontal unit This field supplied insulation should be approximately twice the footprint size of the unit It provides sound damping of the unit while in operation Figure 32 Distributed pumping system installation NON DUCTED FREE FILTER ACCESS DUAL SIDED 27 S TRANE Application Considerations Installation Made Easy Installing a horizontal unit inside a cor ridor to enhance sound attenuation pro vides value to duct design Trane takes this fact one step further The new GEH design offers same side return air supply air access to the unit This access is contained within the overall dimension of the units length as shown in Figure 32 The duct access to the unit allows the unit to be installed closely against a corridor wall while at the same time eliminating space required for the duct design Unts that canan ihe same side supry air ani alari air derargerneril arh n lente ti d side Service acces a SUFFI Y Trane s AXIOM i Unit prides earighe sade supply and return access wilh lhe overall kangthi uf Gre uil RETURN Most horizontal unit designs provide an opposite supply air from the return air arrangement or an end supply arrange ment option See Figure 33 for end sup ply example An end supp
45. urn Air WSHP PRCO03 EN Features and Benefits rene The GEV model is also capable of on site modifications With the vertical con figuration the supply air is easily con verted from a top supply air to a back supply air with a service retrofit kit The return air option is order specific There are four combinations See Figure 5 for the four GEV supply reutm air options l Unit Front Airflow Options 6 to 20 ton The 6 through 12 1 2 ton horizontal s airflow flexibility includes four combi nations to aid in applications where the equipment is required to hug a corridor or wall See Figure 3 for the four verti cal configurations previous page Figure 5 Four GEV airflow combinations The sleek narrow cabinet of the 6 to 20 ton vertical is designed to fit through a standard doorway for installation dur ing new or retrofit construction The equipment is available in four supply air return air combinations These com binations are order specific via the unit model number See Figure 6 for the a four vertidcal airflowvcombinations 7 BACK SUPPLY AIR li FRONT RETURN AIR TOP SUPPLY FRONT RETURN AIR Figure 6 Four large ton GEV airflow combinations BACK RETURN AIR Figure 4 Six field convertible GEH airflow combinations FRONT SUPPLY AIR BACK ae ii AIR TOP SUPPLY 11 S TRANE Features and Benefits Hanging Device 1 2 to 5 ton
46. ve Package D GEH GEV E Drive Package E GEH GEV F Drive Package F GEH GEV G Drive Package G GEH GEV H Drive Package H GEH GEV J Drive Package J GEV DIGIT 13 CUSTOMER CHANNEL 1 Boiler Tower Design for Trane Commercial Group 2 Geothermal Design for Trane Commercial Group 5 Trane International Group DIGIT 14 OPEN DIGIT 0 Standard Design DIGIT 15 SUPPLY AIR ARRANGEMENT B Back Supply Air Arrangement F Front Supply Air Arrangement L Left Supply Air Arrangement R Right Supply Air Arrangement T Top Supply Air Arrangement DIGIT 16 RETURN AIR ARRANGEMENT L Left Return Air Arrangement R Right Return Air Arrangement B Back Return Air Arrangement F Front Return Air Arrangement DIGIT 17 CONTROL TYPES 0 Basic 24 V Controls D Deluxe 24 V Controls C Tracer ZN510 Controls B Tracer ZN524 Controls DIGITS 18 TSTAT SENSOR LOCATION 0 Wall Mounted Location DIGITS 19 FAULT SENSORS 0 No Fault Sensor 1 Condensate Overflow Sensor 2 Filter Maintenance Timer 3 Condensate Overflow and Filter Maitenance Timer 4 Fan Status Sensor 6 Condensate Overflow and Fan Status H Fan Status and Filter Maintenance Timer J Fan Status Filter Maintenance Timer and Condensate Overflow Sensor DIGITS 20 TEMPERATURE SENSOR 0 No Additional Temperature Sensor 1 Entering Water Sensor DIGITS 21 NIGHT SETBACK CONTROL 0 No Night Setback Relay N Night Se
47. worked water source system The TLC provides a night setback out put and a pump request input for sys tem optimization See Figure 24 for 24 volt deluxe control system COMPRESSOR CONTACTOR 18 POLE LOW VOLTAGE CONNECTION Figure 23 Deluxe 24V control box COMPA ENABLE TRANSFORMER i FIELD PROVIDED Lf y SYSTEM RELAY FIELD PROVIDED TRACER LOOF CONTROLLER DAISY CHAIN WIRE Ta 3 FELD PROVIDED Vi Figure 24 24 volt deluxe control system 19 S TRANE Features and Benefits Microprocessor Design The 24 volt deluxe design is a micro processor based control board conve niently located in the control box The board is unique to Trane water source products and is designed to control the unit as well as provide outputs for unit status and fault detection The Trane microprocessor board is fac tory wired to a terminal strip to provide all necessary terminals for field connec tions See Figure 27 for the deluxe 24V control board Deluxe 24V features include Random Start The random start relay provides a time delay start up of the compressor when cycling in the occupied mode A new start delay time between 3 and 10 sec onds is applied each time power is enabled to the unit Anti short Cycle Timer The anti short cycle timer provides a three minute time delay between com pressor stop and compressor restart Brown out Protection The brown out protection f
48. ystem reversing valve 4 way valve is included with all heating cooling units This valve is piped to be energized in the cooling mode to allow the system to provide heat if valve failure were to occur Once the valve is energized for cooling it will remain energized until the control system is turned to the OFF posi tion or a heating cycle is initiated Units with the cooling only option will not receive a reversing valve 13 S TRANE Features and Benefits Blower Motor 1 2 to 5 ton The supply air blower motor is a multi speed motor with internal ther mal overload protection The motor bearings are permanently lubricated and sealed AIl motors are factory wired to the option selected A high medium and low speed tap is provided for field cus tomization on most voltages The speed tap modification can be made in the control box of the unit See Figure 15 for blower motor Note The three phase designs are pro vided in a dual or three speed version only See fan performance section for factory ratings Serviceability to the motor is made through either of the two air side access doors for the horizontal configu ration and through one air side access door on vertical configuration The motor and blower wheel are removable by an orifice ring mounted to the fan housing Blower Motor 6 to 20 ton A belt driven motor selection powers the fan for the 6 through 20 ton dual circuit units The 6 through 12
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