Flame safeguard sequencer having switch test functions

Details Flame safeguard sequencer having switch test functions Flame safeguard sequencer having switch test functions

F - Mech Eng,Light,Heat,Weapons

23

N

341/19

F23N 3/02 (2006.01) F23N 3/08 (2006.01) F23N 5/20 (2006.01) F23N 5/24 (2006.01)

Patent

CA 1208739

ABSTRACT OF THE DISCLOSURE The high fire and low fire switches normally operated by a damper in a fuel burner installation are verified by a switch test function. In the event that the switches are malfunctioning, the fuel burner sequence is extended to compensate, or the sequence is terminated and annunciated. The extension of the sequence is accom- plished by a time sequencer alteration means that is part of a flame safeguard sequencer.

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