Control systems for gaseous fuel fired appliances

Details Control systems for gaseous fuel fired appliances Control systems for gaseous fuel fired appliances

1973-11-19

1976-02-17

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Sensor of first burner controls second burner, e.g., pilot...

431 54, 431255, 13763014, 13763015, 251234, 236 1H, F23Q 908

Patent

active

039389359

ABSTRACT:
A control unit for a gas-fired appliance comprises a service tap that acts also as a flame failure device. The flame failure device controls gas flow to a gas governor which is an integral part of the unit and associated with the gas governor is a low gas pressure cut-off. The unit also incorporates a modulating gas flow control valve operatively coupled to a thermostat which, in the case of a gas-fired water heater, is responsive to water temperature in the heater. When used with a water heater, the unit also includes a further thermostat set to terminate gas flow in the event that a predetermined maximum water temperature is exceeded.

REFERENCES:
patent: 393020 (1888-11-01), McLaren
patent: 1696143 (1928-12-01), Hinchman
patent: 2191078 (1940-02-01), Kehl
patent: 2355043 (1944-08-01), Adlam
patent: 3190314 (1965-06-01), Visos et al.
patent: 3275035 (1966-09-01), Freeby et al.
patent: 3314448 (1967-04-01), Wolff et al.
patent: 3508567 (1970-04-01), Kirk et al.

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