Owner`s manual
12426-15-0811 Page 13
This appliance must be properly connected to a venting system. This
appliance is equipped with a vent safety shutoff system.
Warning: Operation of this wall furnace when not connected
to a properly installed and maintained venting system or
tampering with the vent safety shutoff system can result in
carbon monoxide (CO) poisoning and possible death.
This furnace is equipped with a manual reset vent safety switch. The
manual reset vent safety switch will cause gas ow to the main burner
to "shut off" due to improper venting or a blocked ue.
To reset the manual reset vent safety switch:
1. Remove outer casing.
2. Depress manual reset button. The manual reset vent safety switch
is located on the draft diverter.
3. Replace outer casing.
If the manual reset vent safety switch continues to "shut off" the gas
ow to the main burner a qualied service person must be contacted to
inspect for improper venting, blockage in the vent pipe or the manual
reset vent safety switch for being defective.
The correct ame will be a short blue inner ame with a much larger light
blue outer ame. The burner does not have a primary air adjustment.
The ame will be proper if the factory-set pressure and orice are used.
After the furnace has begun operating, cleaning of the burner may be
needed for proper ame, examine at least 2 times per season.
To clean burner ports, disconnect the gas supply to the valve. Remove
the burner assembly from the combustion chamber. Remove pilot
burner from main burner and then remove the main burner. Force water
into the ports and blow dry with vacuum cleaner air, or low pressure
compressed air.
Figure 9
Figure 10
The correct ame will be blue, extending past the thermopile. The ame
will surround the thermopile just below its tip.
Natural gas pilots require adjusting when the inlet gas pressure is above
5" w.c. (1.245kPa). Remove the pilot cover screw on the control valve
and turn the adjustment screw clockwise to reduce ame. Replace pilot
cover screw to eliminate gas leaking at that control valve opening.
LP gas (propane) will not require adjustment.
After use, cleaning may be required for the proper ame.
Examine the pilot ame before and during each heating season.
Figure 8
VENT SAFETY SHUTOFF SYSTEM
PROPER MAIN BURNER FLAME
PROPER PILOT FLAME