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manual abstract
If indoor storage is not possible, the following provisions for outdoor storage must be met: 1. Place the unit(s) on a dry surface or raise above the ground to assure adequate air circulation beneath the unit. 2. Cover the unit(s) with a water proof tarp to protect them from the elements. 3. Make provisions for continuous venting of the covered units to prevent moisture from standing on the unit(s) surfaces. Wet interior unit insulation can become an amplification site for microbial growth (mold) which has been determined to be a cause of odors and serious health related indoor air quality problems. 4. Store units in the normal UP orientation to maintain oil in the compressor. 5. Do not stack more than three units in total height for the WPWD/GSWD 2-ton through 6-ton configurations, and no more than two units high for the EXWA 20-ton configuration. WSHP-SVX02A-EN Unit Nameplate The unit nameplate is located at the front of the unit. It includes the unit model number, serial number, electrical characteristics, refrigerant charge, and other pertinent unit data. Compressor Nameplate The nameplate for the compressors are located on the compressor shell. Unit Description Before shipment, each unit is leak tested, dehydrated, charged with refrigerant and run tested for proper control operation. Water-to-Refrigerant Coils The brazed-plate water-to-refrigerant heat exchangers for the 2-ton through 6-ton equipment are constructed of stainless steel. The water-to-refrigerant heat exchangers for the 20-ton equipment are an inner copper tube or cupro-nickel (option available on the source-side only) and steel tube (tube-within-atube) design. Both heat exchanger types are leak tested to assure there is no cross leakage between the water and refrigerant gas. Water Connections One inch brass swivel connections are provided for the 2-ton through 6-ton equipment. Each brass fitting has a one inch gasket for the connector. The gaskets are shipped in the electrical compartment to prevent loss at the job site. Water connections for the 20-ton are located inside the unit at the units front (source-side) and back (load- side). The fitting consist of a 2-inch female pipe threaded connection. Controls The control system offered to control the unit is a Basic 24 volt control for the 2-ton through 6-ton unit sizes, and a deluxe 24 volt micro processing board for the 20-ton unit. All power wiring to the equipment is made at the unit contactor for the 2 General Information ton through 6-ton equipment, and at the power block for the 20-ton equipment. All low voltage wiring is made at the unit’s low voltage terminal board. Wiring Connections Troubleshooting and connection diagrams for the equipment may be located in the back of this manual. Basic 24V Controls (for 2-ton through 6-ton units) Safety devices for equipment containing the basic 24V control option include a low pressure switch and a freezestat to prevent compressor operation during low temperature activity. The switch is set to activate at refrigerant pressures of 35 psig or 7 psig to fit most applications. A high pressure switch prevents compressor operation during high or excessive discharge pressures exceeding 395 psig. The lockout relay communicates the low or high pressure situation to the compressor to prevent operation. The relay may be reset at the thermostat, or by cycling power to the unit. General alarm may be accomplished through the lockout relay to drive light emitting diodes (LEDs) on a field supplied status indicating thermostat. Terminal 6 on the lockout relay is open for field use in malfunction indications. This feature will drive dry contacts only, and cannot be used to drive field installed control inputs. Deluxe 24V Controls (for 20-ton unit) Units containing the Deluxe 24V control design will incorporate a microprocessor- based control board. The Trane microprocessor board is factory wired to a terminal strip to provide all necessary terminals for field connection. The deluxe board is equipped with a random start relay, anti-short cycle timer, brown out protection, compressor disable, unit safety control, diagnostics and a generic relay (which may be available for field use). See page 17 for diagnostic information. Desuperheater (Option for 2-ton through 6-ton units) For units containing the desuperheater option, the unit is shipped from the factory with a desuperheater water coil and pump mounted internal to the unit cabinetry. For domestic hot water hook-up instructions, see manual WSHPC-IN-4 or 72-9006-02. The desuperheater pump fuse is located in the control box within a container. The fuse is not factory installed to avoid possible pump damage at initial start-up. If the fuse in installed and the unit is started without water in the system, the pump will be damaged. See page 17 for fuse installation. Schrader Connections Connections for the low and high side of the refrigeration system are located conveniently on the unit’s right side for the 2-ton...
Other models in this manual:Water and Air Pumps - GSWD (350.4 kb)
Water and Air Pumps - WPWD (350.4 kb)