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Flow chart: Gas Burner: Flame Monitoring with Ignition Flame (Gas Valve 1 Opens Before Ignition Valves)

Gas Burner: Flame Monitoring with Ignition Flame (Gas Valve 1 Opens Before Ignition Valves)

A ... B

Purge sequence

B … C

Burner start sequence

C … D

Controlled Operation

D … E

Burner stop sequence

Any state

Any signal state. Running time monitoring enabled

No control or signal must not be present

Control or signal present

t1 Extraneous light: Minimum test time
t2 Ignition time
t3 1st safety time (Ignition flame)
t4 Ignition flame stabilization time
t5 2nd safety time
t6 Safety time oil gun

DOC-719427566