H - Electricity – 05 – B
Patent
H - Electricity
05
B
309/42
H05B 1/02 (2006.01) F24D 17/00 (2006.01)
Patent
CA 1202351
CONTROL SYSTEM FOR WATER HEATER WITH EXTERNAL HEAT SOURCE ABSTRACT There is disclosed a control system (32) for a water heater operatively associated with an external heat source (14), wherein the water heater includes a water storage tank (12) having a tank heating unit (26). The control system maintains the tank heating unit effectively turned off and turns the external heat source on in response to an indication from the tank heating unit that there is a demand for hot water. The control system (32) also turns the external heat source (14) off in response to an indication from the tank heating unit that the demand for hot water has been satisfied. Further, the control system is responsive to an external condition for turning the external heat source off, turning the tank heating unit on, and maintaining the external heat source off and the tank heating unit on until the tank heating unit indicates that the demand for hot water has been satisfied. The tank heating unit need not be modified for use with the control system.
445091
Reier John C.
Shaffer Jacob E. Jr.
Tome Frederick C. Jr.
Borg-Warner Corporation
Macrae & Co.
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