Auxiliary heater controller

Details Auxiliary heater controller Auxiliary heater controller

1986-06-18

1987-10-20

Bennet, Henry A.

Heating systems

Automatic control

Heat source is a reverse cycle refrigerating system or heat...

219202, 219205, G05D 2300

Patent

active

047008881

ABSTRACT:
An auxiliary heater controller is provided for use with a liquid cooled engine which includes two fluid circuits. The first fluid circuit includes the engine, a heat exchanger with an air flow creating fan, a heater and a pump, while the second fluid circuit shunts the engine and includes only the heat exchanger, heater and the pump. A single two-way valve operates to direct fluid to either the first or the second fluid circuit, and a timer unit is provided which operates automatically at a preset time to cause fluid to flow in the first fluid circuit for a predetermined time period. The air flow creating fan is operated by a thermostat at low speed when the engine is not operating and is operated by a manually controlled variable speed control unit when the engine is operating.

REFERENCES:
patent: 3122319 (1964-02-01), Friedl et al.
patent: 4280330 (1981-07-01), Harris et al.

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