15
Gas Control Lever
Pilot Adjustment
d. WHAT TO DO IF YOU SMELL GAS: Do not try to light
any appliance. Do not touch any electric switch and
do not use any phone in your building. Immediately
call your gas supplier from a neighbor’s phone. Follow
the gas supplier’s instructions. If you cannot reach
your gas supplier, call the fire department.
e. Use only your hand to push in the gas control lever.
Never use tools. If the lever will not push in by hand,
don’t try to repair it. Call a qualified service technician.
Force or attempted repair may result in a fire or
explosion.
f.
Do not use this furnace if any part has been under water.
Immediately call a qualified service technician to inspect
the furnace and to replace any part of the gas valve or
control system which has been under water.
LIGHTING INSTRUCTIONS FOR STANDING PILOT
MODELS.
a. Stop! Read the safety information.
b. Set the thermostat to the lowest setting.
c. Turn off all electric power to the appliance.
d. Push in the gas control lever slightly and move left to
“OFF.” DO NOT FORCE.
e. Wait ten (10) minutes to clear out any gas. If you then
smell gas, STOP! Follow step “d” in the SAFETY
INFORMATION. If you don’t smell gas, go to the next
step.
f. Find pilot - follow metal tube (pilot tube) from gas control
valve. Open hinged fire observation door. The pilot is
found at the end of the pilot tube just left of the pilot shield.
Figure 28. Standing Pilot Valve
Figure 29. Lighting Furnace
g. Slightly depress the gas control lever and move it right to
the “ON” position and release; then move it to the “PILOT”
position.
h. Move the control lever to “SET” and hold. Immediately
light the pilot with a match. If this furnace is equipped with
a Piezo Ignitor, activate spark lever/button several times
until flame is visible through observation door. Continue
to hold the control lever for about one (1) minute after the
pilot is lit. Release the lever and it will spring back to the
“PILOT” position. Pilot should remain lit. If it goes out,
repeat steps “d” through “h” above. If the lever does not
spring back when released, stop and immediately 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.
In the event of any flashback 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 STANDING 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 flow and opens fully after approximately 14
seconds.
c. When the call for heat is satisfied the thermostat contacts
open, the gas valve shuts off gas flow.
SEQUENCE OF OPERATION FOR STANDING PILOT W/
INDUCED DRAFT BLOWERS MODELS
a. On a call for heat, the thermostat contacts close, supplying
24 VAC to the relay.
b. The relay contacts close and energize the induced draft
motor.
c. When the inducer starts, the air pressure switch closes at
-0.30”WC differential pressure and energizes the gas
valve.
WARNING:
Close hinged fire door. If fire 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.
!
Pilot
Bracket
