Heating systems – Automatic control – Combined radiator and boiler
Patent
1990-09-14
1992-06-02
Bennet, Henry A.
Heating systems
Automatic control
Combined radiator and boiler
237 8R, 237 19, F24H 306
Patent
active
051180391
ABSTRACT:
Domestic hot water heating control circuit is used in conjunction with a furnace control unit of a hot air furnace system which utilizes a hot water heat exchanger. The hot water control circuit has a diverter valve which is electrically connected to a thermostat which monitors a hot water tank and a fan control circuit for controlling the operation of a comfort fan for the hot air system integrated with the furnace control system. The diverter valve controls the circulation of heated water between the heat exchanger of the furnace and the hot water tank. When the hot water tank thermostat calls for heat, the diverter valve switches a relay to start the furnace and to direct heated water from the heat exchanger of the furnace to the heating coil of the hot water tank. The fan control circuit then operates to shut "off" the comfort fan to prevent cold air from being supplied to the living space in the event that the space thermostat calls for heat.
REFERENCES:
patent: 4907737 (1990-03-01), Williams, Jr.
patent: 4978063 (1990-12-01), Chase
Bennet Henry A.
R. E. Phelon Company, Inc.
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