Sequence Of Operation; System Check; Main Burner Operation - Empire Heating Systems FAW-40-1IP Installation Instructions And Owner's Manual

START

System Check

Trial for
Ignition
Main Burner
Operation
END
(1) Ignitor will turn OFF about 30 seconds into the trial for ignition if the pilot flame has not lit. It will turn back ON for the final 30 seconds
of the 90 second trial for ignition. The pilot valve will be energized during the entire trial for ignition. This is normal operation for this gas
ignition system.
12427-4-0306

SEQUENCE OF OPERATION

Apply 24 VAC
To Appliance
Thermostat
Calls for Heat
Flame Signal
Detected
NO
Internal Check
OK
YES
Pilot Valve Opens

Ignitor Powered

Pilot Light and Flame is
Sensed During Trial For
Ignition (1)
YES
Ignitor OFF

Main Valve Opens

Flame Signal
Lost?
NO
Thermostat Call for Heat
Ends
Main Pilot Valves
Close
Pilot Valve Ignition OFF

YES
Wait for Flame Signal to

Disappear
NO
 Pilot Valve Closes
NO
Ignition OFF

YES
Main Pilot
Valves Close
Flame Lost More
Than 5 Times in
One Call for Heat
YES
5 Minute Retry Delay
3 Second Flame Recycle
Delay
NO
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