F - Mech Eng,Light,Heat,Weapons – 23 – Q
Patent
F - Mech Eng,Light,Heat,Weapons
23
Q
158/35, 158/57
F23Q 7/10 (2006.01) F23N 5/12 (2006.01) F23N 5/20 (2006.01) F23Q 9/12 (2006.01)
Patent
CA 1051768
SPARK IGNITED RECYCLING IGNITION SYSTEM WITH INTERLOCKING GAS VALVE CONTROL ABSTRACT OF THE DISCLOSURE An ignition system for heating appliances which burn gas or vaporous fuels. A spark igniter is programmed to ignite a pilot burner which in turn ignites a main burner. A flame rod is used to confirm to the control circuitry that pilot ignition has taken place before the main gas valve is opened. An initially closed timing control circuit opens the pilot gas valve but times out if ignition of the pilot does not occur within a predetermined time. Other circuit interlocking features are provided for overall fail-safe operation.
237096
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