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Water Source Heat
Pump Residential
Split Configuration
HVAC System
©An American Standard Company
Installation
Operation &
Maintenance
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File No.
Supersedes
Since American Standard Inc. has a policy of continuous product improvement, it reserves the right to change specifications
and design without notice. The installation and servicing of the equipment referred in this booklet should be done by qualified,
experienced technicians.
WSHPC-IOM-2
72-9041-02
Service Literature
Unitary
Water Source Heat Pump
GSSD
Installation, Operation and Maintenance
June 1999
SL-UN-WSHP-GSSD-IOM-2-6-99
WSHPC-IOM-2 / 72-9041-01 (Jan 98)
2
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Summary of Contents for Trane GSSD
- Page 1 The installation and servicing of the equipment referred in this booklet should be done by qualified, experienced technicians. WSHPC-IOM-2 72-9041-02 Service Literature Unitary Water Source Heat Pump GSSD Installation, Operation and Maintenance June 1999 SL-UN-WSHP-GSSD-IOM-2-6-99 WSHPC-IOM-2 / 72-9041-01 (Jan 98)
- Page 2 The Trane Company urges that all HVAC servicemen working on Trane equipment, or any manufacturer’s products, make every effort to eliminate, if possible, or vigorously reduce the emission of CFC, HCFC, and HFC refrigerants to the atmo- sphere resulting from installation, operation, routine maintenance, or major service on this equipment. Always act in a re- sponsible manner to conserve refrigerants for continued use even when acceptable alternatives are available.
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Page 3: Model Number
1 = With Desuperheater Model Number Description DIGIT 14 - FREEZE PROTEC- TION 1 = 35 Degree Freezestat 2 = 20 Degree Freezestat DIGIT 15 - OPEN 0 = Open DIGIT 16 - BRAND C = Command Aire T = Trane... -
Page 4: General Information
The GSSD split unit has been ARI rat- ed with the Trane TWE air handlers with ICM 2 variable speed motors to create a complete split system for res- idential applications. The GSSD equipment is completely assembled, piped, internally wired and test operat- ed in the factory. - Page 5 Warranty The unit is warranted by the manufac- turer against any defects in material and factory workmanship for one year after installation (labor and parts). General Information The refrigerant circuit, including the compressor, expansion device, revers- ing valve (less solenoid coil), and all heat exchangers in contact with refrig- erants are warranted for an additional four years (parts only).
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Page 6: Receiving And Handling
The GSSD is packaged in clear stretch wrap to allow immediate visual in- spection. A careful inspection should be made for shipping damage. All or- ders are free on board (FOB) facto- ry, therefore claims must be made with the delivering carrier. - Page 7 Installation-Location Considerations Unit Size 024 23-5/16” 23” TOP VIEW 24-5/16” 24-13/16” FRONT VIEW Unit Weight Unit Size LOW VOLTAGE 1-1/8” DIA. PUMP CONTROL 1-1/8” DIA. WATER REG (SCHRADER PORT) SUCTION/DISCH 3/4” O.D. DESUPER OUT 1/2” NPT DESUPER IN 1/2” NPT LOW PSI SCHRADER 8-7/16”...
- Page 8 Installation-Location Considerations Unit Size 030-042 23-5/16” 23” TOP VIEW 24-13/16” FRONT VIEW Unit Size LOW VOLTAGE 1-1/8” DIA. PUMP CONTROL 1-1/8” DIA. WATER REG (SCHRADER PORT) SUCTION/DISCH 3/4” O.D. DESUPER OUT 1/2” NPT DESUPER IN 1/2” NPT 24-5/16” LO PSI SCHRADER 8-7/16”...
- Page 9 Installation-Location Considerations Unit Size 048-072 23-5/16” 23” TOP VIEW 24-5/16” 24-13/16” FRONT VIEW Unit Weight Unit Size LOW VOLTAGE 1-1/8” DIA. PUMP CONTROL 1-1/8” DIA. WATER REG (SCHRADER PORT) SUCTION/DISCH 3/4” O.D. DESUPER OUT 1/2” NPT DESUPER IN 1/2” NPT LO PSI SCHRADER 8-7/16”...
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Page 10: Installation (Water Connections)
Installation-Water Connections Location Consideration Unit should be placed on a level surface in a indoor protected area. Units should not be installed or stored in an exterior environment. There should be approximately 2 to 3 feet of clearance available for accessing the unit for service. - Page 11 Figure 5. Compressor Reversing valve (energized in cooling) 1 Common Low Voltage Pump Control Installation- Electrical GSSD 24V Field Wiring T-Stat (X13510588020) Manual changeover: -two-stage heat -one-stage cool (Sizes 031-065) GSSD (Sizes 024-072) Figure 5: Field wire connections.
- Page 12 HACR circuit breakers for branch circuit protection from the pri- mary source of power. See Figure 6 for component specifications. Figure 6: Electric component location. Table 1: Electrical Data Unit Model: GSSD Volts-60HZ/1Phase 208-230 Compressor RLA 11.4 Compressor LRA Electrical Blower Motor RLA Min.
- Page 13 The low pressure switch should be wired in ac- cordance with the type of freezestat that is used. Trane factory supplies two low pressure switches in the re- frigerant circuit. The electrical con- nection is dependant upon which...
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Page 14: Diagram
230V 6A MAX TO WATERSOURCE PUMP 6A,C,D,E 1TB3-1 1TB3-5 C2 C1 19A 4S3 1TB3-6 LEGEND DEVICE DESCRIPTION COMPRESSOR CONTACTOR LOCKOUT RELAY 1TB3 TERMINAL STRIP COMPRESSOR RUN CAPACITOR COMPRESSOR REVERSING VALVE FREEZE PROTECTION SW 1 HIGH PRESSURE SW LOW PRESSURE SW DISCHARGE LINE T’STAT ENTERING WATER T’STAT 5F1,2,3... -
Page 15: Installation (Water Loop)
It should be noted that there is no me- chanical difference between geother- mal (closed loop) and ground water (open loop) GSSD units. Generally in a closed loop application, there is a percentage of antifreeze in the water. In these applications, the 20 degree F freezestat, along with the 7 psig safety pressure switch may be used. -
Page 16: Refrigerant Charge
GSSD Units Coupled with TWE Air Handlers The GSSD IS coupled with the TWE- E series. Table 4 may be used to deter- mine the amount of charge necessary for the split unit system without any refrigerant line connecting the two. -
Page 17: Refrigeration System
450 psig on both the refrigerant and water sides. To help ensure clean water for the water-to-refrigerant heat exchanger, Trane recommends a sand filter/separator for open loop systems. Freezestat and Lock-out Relay: A freezestat is included to protect the... - Page 18 Accessory Items Note: The following equipment may be pur- chased through the nearest Trane dis- tributor. Water Regulating Valve Assembly: The water regulating valve assembly consists of a direct acting valve and a reverse acting valve. The direct acting valve...