Electrical controls for heating appliances

Details Electrical controls for heating appliances Electrical controls for heating appliances

1977-04-01

1979-12-25

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Control of purger, of scavenger or of combustion start-up...

431 78, F23H 500

Patent

active

041803809

ABSTRACT:
This invention relates to a particularly safe electrical control device for a gas or oil-fired heating appliance comprising a plurality of sub-circuits each carrying out part of a start-up sequence for the appliance, and arranged so that should any sub-circuit fail, the start-up sequence ceases.
Parts of the control device are similar to those shown in British Patent Specification No. 1,314,185. (U.S.Pat. No. 3,674,410).

REFERENCES:
patent: 3376099 (1968-04-01), Giuffrida
patent: 3449055 (1969-06-01), Blackett
patent: 3482922 (1969-12-01), Blackett
patent: 3574495 (1971-04-01), Landis
patent: 3644074 (1972-02-01), Cade
patent: 3814569 (1974-06-01), Jacobsz
patent: 3840322 (1974-10-01), Cade
patent: 4113419 (1978-09-01), Cade

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