Service manual

26
12 LIGHTING INSTRUCTIONS
1. Turn off electric power to appliance.
2. Close main manual valve and main
firing valve and wait 5 minutes.
3. Set primary system controller to desired
temperature.
4. Open pilot valve.
5. Turn on electric power to appliance. The
electrode at the pilot should begin to
spark after pre-purge is complete. The
pilot valve will open to permit gas flow to
the pilot.
6. There is a 15 second trial for ignition,
which is enough time to light the pilot if
air is not present in the pilot line. If pilot
fails to light and you suspect air in the
line, close the main manual valve and
repeat lighting steps 1 thru 5.
7. Once the pilot lights, it should envelope
the ignition rod and ground electrode.
The pilot can be adjusted by removing
the pilot regulator cover and turning the
adjustment screw counterclockwise to
increase it or clockwise to decrease it.
8. Open the main manual and main firing
valves to allow gas to reach the main
burner. If the main burner fails to ignite,
turn the firing valve off and check to see
that the pilot is burning. If not, repeat
lighting procedure steps 1 thru 7.
TO TURN OFF APPLIANCE: Close main
manual valve and main firing valve and turn off
electric power to system.