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Summary of Contents for Trane WSHP-DS-6
- Page 1 Water Source Heat Pump Water-to-Water Model WPWD WSHP-DS-6 March 2000...
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Page 2: Introduction
The electrical energy supplied to the compressor is added to the out- put heat of compression. The Trane water-to-water product package includes: q High efficient scroll compressor q Compressor protection q Water to refrigerant condensing... -
Page 3: Table Of Contents
Introduction Features and Benefits Model Number Description General Data Application Considerations Electrical Data Performance Data Dimensional Data Wiring Diagram Accessory Options Mechanical Specifications Table Contents... -
Page 4: Features And Benefits
This feature adds to the unit life. Expansion Valve As standard, Trane provides a bal- anced port thermal expansion valve. This valve precisely meters the refrigerant flow through the cir- cuitry to achieve the desired heat- ing or cooling over a wide range of fluid temperatures. - Page 5 A terminal strip with 1/4” fork con- nections will be provided for field thermostat control wiring. (See Fig- ure 3). Safety Devices Each Trane water-to-water unit con- tains safety devices to prevent com- pressor damage. These include: q Low pressure switch q High pressure switch...
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Page 6: Heat Recovery
Features Benefits Desuperheater Option The desuperheater option is a heat recovery system packaged within the water-to-water unit. This option captures heat energy from the heat pump for considerable cost savings all year. Since it is active in either operating mode, it can provide hot water at a reduced cost while in heating or virtually free hot water while in cooling. -
Page 7: Model Number Description
Model Number Description Digits 1 & 2: Product Type WP = Trane Commercial Water Source Heat Pump Digit 3: Product Configuration W = Water-to-Water Digit 4: Development Sequence D Digits 5-7: Unit Nominal Capacity 024 = 24.0 MBh 036 = 36.0 MBh 042 = 42.0 MBh... -
Page 8: General Data
Table G-1: Physical Data (English) Model: WPWD Width of cabinet (in) Width of cabinet and connections (in) Unit Size Height (in) Depth (in) Compressor Type R-22 Refrigerant (lbs) Approximate Weight With crate (lbs) (lbs) Table G-2: Specifications (English) Model: WPWD Source and Load Source and Load Ft. -
Page 9: Application Considerations
Closed Loop System Closed loop systems (both ground source and surface water) provide heat rejection and heat addition to maintain proper water source temperatures. Operating and maintenace cost are low because an auxillary fossil fuel boiler and cooling tower are not required to maintain the loop temperature. - Page 10 Open Loop System Where an existing or proposed well can provide an ample supply of suitable quality water, ground water systems may be very efficient. (See Figure 7) Operation and benefits are similar to those for closed loop systems. There are however several considerations that should be addressed prior to installation.
- Page 11 Source vs. Load The model WPWD water-to-water system contains two water to refrig- erant heat exchangers. The two heat exchangers enable the system to be divided into a source and load separation. The “source side” heat exchanger performs as in a standard water to air heat pump system.
- Page 12 This rejected heat may be used by Trane’s water-to- water heat pump(s) to heat water for a car wash and melt ice off of a driveway (allowing the car wash to remain open all winter).
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Page 13: Fresh Air Ventilation
The above design goes further than just space heating and cooling. Fresh air ventilation is achieved by using Trane water-to-water units teamed with a hydronic outside air unit, and exhaust air unit to meet total building requirements. - Page 14 Application Considerations EXHAUST OUTSIDE HOT WATER COIL HANDLER HANDLER BALL VA SUPPLY RETURN Fresh Air Ventilation Mechanical AUTOMATIC AIR VENT WPWD WPWD WPWD WPWD EXP TANK HAND PUMP DRAIN VA PRESSURE RELIEF VA...
- Page 15 Note: Pipe will sweat if low temperature water is run through the supply or return lines. Trane recommends that these lines be insulated to pre- vent damage from condensa- tion. The field supplied line voltage...
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Page 16: Well Water Systems
General A well water application involves an open loop water supply. The water is drawn from an open well or pond into the unit. A straining device is required with this application. Similar to the closed loop design, an open water supply usually remains at a constant temperature year round utilizing maximum efficiency in unit design. - Page 17 General A distributed pumping system con- tains either a single or dual pump module connected directly to the units supply and return source side. This design requires individual pump modules specifically sized for each water source heat pump. Cen- tralized pumping is not required. See Figure 12 for a distributed pumping installation.
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Page 18: Electrical Data
Table E-1: Electrical Data Model: WPWD Voltage Compressor RLA 11.4 Compressor LRA Minimum Circuit Ampacity Max Fuse Size Aux Pump Amps Desuperheater Min Cir Ampacity 14.3 Desuperheater Pump RLA Voltage Compressor RLA Compressor LRA Minimum Circuit Ampacity Max Fuse Size Aux Pump Amps Desuperheater Min Cir Ampacity Desuperheater Pump RLA...
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