21
Gas Control Lever
Pilot Adjustment
Figure 28. Standing Pilot Valve
Figure 29. Lighting Furnace
Pilot
Bracket
steps “d” through “h” above. If the lever does
not spring back when released, stop and im-
mediately call your service technician or gas
supplier. If the pilot will not stay lit after several
tries, move the gas control lever to “OFF” and
call your service technician or gas supplier.
i. Move the gas control lever left to “ON”.
j. Turn on all electric power to the furnace. Set
the thermostat to “Heat” and/or the desired
temperature setting. Set the On-Off-Fan
switch to “ON”.
k. Replace the furnace door.
WARNING:
Close hinged fi re door. If fi re door is
open or spring is broken it may allow
products of combustion into the living
space by the furnace blower resulting
in possible asphyxiation.
In the event of any fl ashback or explosion,
immediately shut off the furnace and call your
service technician.
TO TURN OFF GAS TO APPLIANCE:
a. Set the thermostat to the lowest setting.
b. Turn off all electric power to the appliance at
breaker or fuse box, before servicing.
c. Remove the furnace door.
d. Push in the gas control lever slightly and move
to the left to “OFF.” DO NOT FORCE.
e. Replace the furnace door.
SEQUENCE OF OPERATION FOR STAND-
ING PILOT
a On a call for heat, the thermostat contacts
close, supplying 24 VAC to the gas valve.
b. When the gas valve is energized it steps
open at a reduced fl ow and opens fully after
approximately 14 seconds.
c. When the call for heat is satisfi ed the ther-
mostat contacts open, the gas valve shuts off
gas fl ow.
