Oil burner control system with flue damper adapter circuit

Details Oil burner control system with flue damper adapter circuit Oil burner control system with flue damper adapter circuit

1978-09-13

1981-05-19

Lowrance, George E.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

431 20, F23N 300, G05D 2300

Patent

active

042679656

ABSTRACT:
An adapter circuit for retrofitting an oil burner control system with a flue damper includes a source of energy in circuit with the thermostat for energizing the damper motor in response to a call for heat to open the damper. A first relay in the adapter circuit includes a pair of contacts for simulating the operation of the thermostat contacts. When the damper is open, this relay is energized, and its contacts close, simulating the operation of the thermostat after the damper is opened, to energize the burner control circuit, thereby energizing the burner motor and ignition. A second relay in the adapter circuit senses whether the burner motor is energized; and when the burner motor is de-energized, this relay initiates a time delay after which the adapter circuit closes the damper.

REFERENCES:
patent: 3010451 (1961-11-01), Hodgins
patent: 3273625 (1966-09-01), Holtzman
patent: 4005820 (1977-02-01), Cress
patent: 4084743 (1978-04-01), Matthews
patent: 4087045 (1978-05-01), Matthews
patent: 4157785 (1979-06-01), Freliech
Specification Sheet for Stack Pack, .COPYRGT.1976, Flair Manufacturing Corp.
Automatic Stack Damper, Installation Instructions, Trionic Industries, Inc.
Popular Science, "Pros and Cons of Automatic Flue Dampers."
Seris M15, Y15, Automatic Vent Damper System, Johnson Controls, Inc. Penn Division.

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