Trane GSSD specifications Miscellaneous Equipment, Accessory Items

Miscellaneous Equipment

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 opens in response to an increase in discharge pressure during the cooling cycle. The reverse acting valve opens in response to a decrease in suction pressure during the heating cycle. Water regulating valves should be used where low flow, and low or high fluid temperature conditions could occur.This option is beneficial with open loop systems, but not necessary.

!Motorized Water Valve for open loop systems: The motorized water valve is installed on the return line of the system between the loop

and the loop pump module. This isolation device is a much less expensive and very effective alternative. When the compressor begins running, the valve will open, allowing water to flow through the unit. As the compressor shuts down, the valve slowly closes off. The main purpose of the automatic device is to prevent water hammer, by keeping the pressure raised in the loop system during off cycles.

!Electric Strip Heaters: If the ETL listed strip heaters are used, they can be installed directly inside the TWE air handler. These heaters are rated at 230 volts and provide electric heat for both supplemental and emergency heat requirements. There are a number of heater capacities available.

!Pump Module: The pump module and the hose kit make a complete self-contained pumping package for the earth-coupled heat pump system. These kits contain all the

necessary components for the installation, operation and maintenance of the water circuit of a closed loop geothermal application. Standard pump module features include insulated Grundfos pumps, insulated cabinet, optional cast iron or bronze pumps, 3-way brass valves and the choice of a one or two pump module.

!Hose Kits: The hose kits include two brass, 1-inch male pipe thread (MPT) by barb-fittings, two brass 90 degree 1-inch, MPT by barb- elbows with pressure/temperature ports and 10 feet of rubber hose with 4 hose clamps.

!Sand Filter/Separator: A sand filter/separator helps ensure clean water for the water-to-refrigerant heat exchanger. The recommended strainer is 60 mesh or greater. The strainer keeps particles and debris from entering the system.

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