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WSHPC-IOM-2
Installation
72-9041-02
Operation &
Maintenance
Library Service Literature
Product Section Unitary
Product Water Source Heat Pump
Model GSSD
Literature Type Installation, Operation and Maintenance
Sequence 2
Date June 1999
File No. SL-UN-WSHP-GSSD-IOM-2-6-99
Supersedes WSHPC-IOM-2 / 72-9041-01 (Jan 98)
Water Source Heat
Pump Residential
Split Configuration
HVAC System
Since American Standard Inc. has a policy of continuous product improvement, it reserves the right to change specific
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Table of Contents Model Number 3 Installation (Water Loop).. 15 Descriptions..................... General 4 Refrigeration Charge........ 16 Information...................... Receiving and 6 Refrigeration System....... 17 Handling.......................... Installation 7 Accessories................... 18 Drawings......................... Installation (Water 10 Connections).................... Installation 11 (Electrical)................. Diagram.................... 14 Notice The Trane Compa
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Model Number Description GS S D 036 1 0 C 0 0 1 2 0 T 5 10 15 DIGITS 1 & 2 - PRODUCT TYPE DIGIT 14 - FREEZE PROTEC- TION GS = Ground Source Heat Pump 1 = 35 Degree Freezestat 2 = 20 Degree Freezestat DIGIT 3 - PRODUCT CONFIGU- RATION S = Split System DIGIT 15 - OPEN 0 = Open DIGIT 4 - DEVELOPMENT SE- QUENCE D DIGIT 16 - BRAND C = Command Aire DIGITS 5,6 & 7 - UNIT NOMINAL T = Trane CAPACITY (MBH) 024 = 24.1 030 = 29.6 036 = 36.4 042 = 41.1 048 = 48.7 060 = 59.2 072 = 65.6 DIGIT 8 - VOLTAGE/HERT
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General Information The GSSD split unit has been ARI rat- ature-out of the hot water heater. The Brass Loop Water ed with the Trane TWE air handlers desuperheater is disable until the com- Connections with ICM 2 variable speed motors to pressor discharge line reaches 145 de- create a complete split system for res- grees F. The desuperheater pump will Two 1-inch brass swivel connectors idential applications. The GSSD automatically shut off if the tempera- on the units help eliminate the need
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General Information The refrigerant circuit, including the Optional extended warranties are Warranty compressor, expansion device, revers- available through the local distributor. ing valve (less solenoid coil), and all The unit is warranted by the manufac- Note: heat exchangers in contact with refrig- turer against any defects in material erants are warranted for an additional and factory workmanship for one year If any safety device is bypassed or four years (parts only). after installat
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Receiving and Handling The GSSD is packaged in clear stretch remove the (4) four shipping brackets ! Inspect the overall quality and appearance of the unit wrap to allow immediate visual in- from the lower corners of the unit spection. A careful inspection should along with the shipping skid. be made for shipping damage. All or- Note: ders are free on board (FOB) facto- ry, therefore claims must be made Before installing the unit: with the delivering carrier. ! Verify nameplate and model numb
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Installation-Location Considerations Unit Size 024 Unit Weight Unit Size (lbs.) 024 163 23-5/16” 23” 6-7/16” LOW VOLTAGE 5-1/2” 1-1/8” DIA. TOP VIEW 3-15/16” PUMP CONTROL 1-7/16” 1-1/8” DIA. HI VOLTAGE WATER REG (SCHRADER PORT) SUCTION/DISCH 1-1/8” DIA. 3/4” O.D. LIQUID LINE DESUPER OUT 1/2” O.D. 1/2” NPT WATER OUT 1” NPTI DESUPER IN 24-5/16” 1/2” NPT LOW PSI SCHRADER HI PSI SCHRADER 8-7/16” 24-13/16” 13-1/4” WATER IN-1” NPTI FRONT VIEW SIDE VIEW 7 10-7/16” 7-3/16” 2-1/16” 13” 13-15/16” 14-3/4”
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Installation-Location Considerations Unit Weight Unit Size Unit Size 030-042 (lbs.) 030 169 036 183 042 203 23-5/16” 23” 6-7/16” LOW VOLTAGE 5-1/2” 1-1/8” DIA. TOP VIEW 3-15/16” PUMP CONTROL 1-7/16” 1-1/8” DIA. HI VOLTAGE WATER REG (SCHRADER PORT) SUCTION/DISCH 1-1/8” DIA. 3/4” O.D. LIQUID LINE DESUPER OUT 1/2” O.D. 1/2” NPT WATER OUT 1” NPTI DESUPER IN 1/2” NPT 24-5/16” LO PSI SCHRADER HI PSI SCHRADER 8-7/16” 24-13/16” 11-1/2” WATER IN-1” NPTI FRONT VIEW SIDE VIEW 8 10-7/16” 7-3/16” 2-1/16” 13
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Installation-Location Considerations Unit Weight Unit Size Unit Size 048-072 (lbs.) 048 214 060 244 072 277 23-5/16” 6-7/16” 23” 5-1/2” LOW VOLTAGE 3-15/16” 1-1/8” DIA. 1-7/16” TOP VIEW PUMP CONTROL HI VOLTAGE 1-1/8” DIA. 1-1/8” DIA. WATER REG LIQUID LINE (SCHRADER PORT) SUCTION/DISCH 1/2” O.D. 3/4” O.D. WATER OUT DESUPER OUT 1” NPTI 1/2” NPT DESUPER IN 1/2” NPT 24-5/16” LO PSI SCHRADER HI PSI SCHRADER 8-7/16” 24-13/16” 11-1/2” WATER IN-1” NPTI FRONT VIEW SIDE VIEW 9 10-7/16” 7-3/16” 2-1/16” 13
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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. Remove these two ! There should be approximately 2 screws for internal unit to 3 feet of clearance available for maintenance. accessing the unit for service. Accessiblity into unit is made by re- moving (2) two screws at the base of the system. (See Figure 2). The top half of the cube then lifts off.
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Installation- Electrical Field Wiring Connections GSSD 24V Field Wiring T-Stat (X13510588020) RF Y OC W W Power wiring to the unit should be in- 1 2 2 Manual changeover: -two-stage heat stalled per local electric codes by a -one-stage cool professional electrician. The wires can be run to the unit through the available knockouts and to the control box in the top half of the unit. TWE Control wiring to the unit is 24 volt. (Sizes 031-065) RG Y O B W W 1 2 The termination point identifications for
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Installation- Electrical Electrical System 24VAC ENERGY LIMITING CLASS II LOCKOUT 75VA BREAKER TYPE TRANSFORMER RELAY; 24VAC The factory tested and installed control COMPRESSOR RUN CAPACITOR box contains all of the necessary de- 370V vices to control unit operation in both the heating and cooling mode. A re- COMPRESSOR CONTACTOR 3 POLE-24VAC mote wall thermostat is necessary for the control of the unit operation. See General Information for thermostat in- formation. The nameplate provides in
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Installation- Electrical der low charge or catastrophic loss of The low pressure switch should be Pressure Switch charge situations. wired to activate at refrigerant A high pressure switch is provided to pressures of 35 psig when a 35 The low water temperature switch is protect the compressor against exces- degree F freezestat is used; 7 psig provided to protect the water-to-re- sive refrigeration pressure. The low frigerant heat exchanger from freez- when a 20 degree F freezestat is pre
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Typical Wiring Diagram L1 L2 230V 6A MAX TO WATERSOURCE PUMP 5F3 5F2 5F1 4 2A 4S5 4S6 6H 6F 6E 6G DESUPER- HEATER PUMP 1K1 6A,C,D,E 7C A 6B1 L3 T3 R C 1C1 7A 2B1 S 1K1 A,C A 5C C L1 T1 5C G 1TB3-1 F,G 16 1K3 1TB3-5 1TB3-2 C2 C1 A C D,F 1K3-24 16 1K1 18 23 1K3 4S3 4S4 4S1 23 19A 21A A D 20A A 5 1TB3-7 1TB3-8 1K1-12,14 4S4 1TB3-6 A F 25 NOTES: LEGEND 1. UNLESS OTHERWISE NOTED. ALL SWITCHES ARE DEVICE DESCRIPTION SHOWN AT 77 DEGREES F AT ATMOSPHERIC PRESSURE. AT 50% RELATIVE HUMIDITY, WITH ALL UTIL
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Installation - Water Loop apt to use one million gallons of Loop Water Applications Ground Water Applications water per year. It may be (Closed Loop) It should be noted that there is no me- necessary to install a recharge well chanical difference between geother- to return the water to the aquifer. Loop sizing should be done by a qual- mal (closed loop) and ground water In some soils, this may be difficult ified installer to insure maximized unit (open loop) GSSD units. Generally in perf
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Refrigerant Charge 3. Charge the system unit until a GSSD Units Coupled with level of 10 degrees superheat is TWE Air Handlers Table 5: R22 requirement per foot of line achieved. To determine super- heat, an accurate suction line The GSSD IS coupled with the TWE- O.D. Tube Liquid Line Suction temperature needs to be taken Size (oz.) Line (oz.) E series. Table 4 may be used to deter- along with the suction pressure. mine the amount of charge necessary 1/4-inch 0.352 N/A 4. The sub-cooling
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Refrigeration System loop applications and closed loop the unit is in the cooling mode and Refrigeration System applications without adequate de-energizes in the heating mode. ! Compressor: The unit includes a antifreeze. A 20 degree F ! Refrigerant Tubing: All refrigerant high efficiency scroll compressor freezestat may be used with closed tubing is constructed of copper. with and internal vibration isolator loop applications with antifreeze The low temperature refrigerant that absorb
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Miscellaneous Equipment and the loop pump module. This necessary components for the Accessory Items isolation device is a much less installation, operation and Note: expensive and very effective maintenance of the water circuit of alternative. When the compressor a closed loop geothermal The following equipment may be pur- begins running, the valve will application. Standard pump chased through the nearest Trane dis- open, allowing water to flow module features include insulated tributor.
