Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1987-12-08
1989-08-01
Tanner, Harry B.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62156, 62160, 165 29, F25D 2102
Patent
active
048523607
ABSTRACT:
A control system for controlling a heating system having a heat pump and a source of supplemental heat. The indoor heat exchanger temperature is monitored, such as by a thermocouple or the like, and when the temperature falls below a given threshold level, defrost cycling of the heat pump is initiated. The control system monitors the defrost cycling of the heat pump, and when the heat pump is in its defrost cycle for more than a predetermined portion of a heating cycle, the heat pump will be shut down until the outdoor ambient temperature has risen by a predetermined amount or a given interval of time has elapsed.
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Harshbarger, III John H.
Harshbarger, Jr. John H.
Tanner Harry B.
Visual Information Institute, Inc.
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