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WATER COOLED CONDENSING UNITS
Water cooled condensing units are equipped with water valves which control the rate of water flow
through the condenser based upon compressor head pressure. The maximum allowable working
pressure on these valves is 150 psig, so a pressure reducing valve may be required. The location of
the condensing unit should be such that it will not be exposed to ambient temperatures below freezing.
A chart of water flow requirements for condensing units (page 17) is based upon incoming water
temperature and is expressed in gallons per hour per 1,000 BTU/hr refrigeration.
BTU/hr capacities are:
MODEL HP BTU/HR CAPACITY
HQC135 3 or 3
1
/4 24,800 at 10°F Suction and 105°F Condensing
HQC200 5 35,800 at 10°F Suction and 105°F Condensing
The water cooled condensing units may be plumbed in series for use with city water supplies or
plumbed in parallel for connection to a cooling tower. All water cooled condensing units are refrigerant
cooled, and therefore should have superheat settings to maintain return gas temperatures not to
exceed 65°F. For additional information, refer to Copeland Technical Bulletin AE 1174-R6, dated
January 1, 1985. A copy is available through your sales representative.