Use and Care Manual

Operating Your Furnace
22
Operating Your Furnace
STANDING PILOT MODELS
3508631; 3508632; 5008631; 5008632; 6508631; 6508632
NOTE:
For models equipped with WILLIAMS gas valve P323209 or
P322042 refer to this page and page 23 for "SAFETY &
LIGHTING INSTRUCTION" and "TURN GAS OFF TO
APPLIANCE."
On new installations, the gas lines will be filled with air and it may
take several minutes to establish the pilot flame.
Keep all access doors and panels in place except for inspection
and maintenance.
WARNING: The surface of the furnace is hot during
operation. Keep children, clothing, furniture, and
flammable material away from it.
Do not store or use gasoline or other flammable
liquids or vapors near the furnace.
SAFETY CONTROLS
These furnace are protected against unsafe operation by five
automatic safety controls: (1) A safety pilot acts to shut OFF the
gas valve in case of pilot failure; (2) A redundant gas valve; (3) A
limit switch shuts down the main burner to prevent overheating
the furnace cabinet; (4) A vent safety shutoff device shuts down
the main burner to protect against improper venting of combustion
products. These limit switches will reset when furnace cools; and
(5) A thermal overload protects the motor against burnout caused
by current surges or if anything should block the flow of air
through the furnace. This switch will reset itself when the motor
cools down and it cannot be adjusted.
WARNING: Danger of ignition flash and eye injury
or blindness.
Protect your eyes. Never attempt to light pilot with
gas control valve knob in "on" position. Flashback
could occur.
NOTE:
Models 3508631; 3508632 are equipped with a single speed fan.
TWO-SPEED FAN OPERATION
MODELS: 5008631; 5008632; 6508631; 6508632
For models equipped with WILLIAMS gas valve P323209 or
P322042: Blower will first operate at low speed then shift to high
speed as the furnace heats up.
IMPORTANT
KEEP BURNER AND CONTROL COMPARTMENT CLEAN.
WARNING: Danger of property damage. Bodily
injury or death
If the furnace overheats or fails to shut off, close
manual gas valve for the furnace before turning off
the electric power.
ELECTRONIC IGNITION MODELS*
3508231; 3508232; 5508231; 5508232
NOTE:
For models equipped with WILLIAMS gas valve P323209 or
P322042 refer to this page and page 23 for "SAFETY &
LIGHTING INSTRUCTION" and "TURN GAS OFF TO
APPLIANCE."
THE FURNACE WORKS LIKE THIS:
1. Thermostat turns on the control module.
2. Automatic relight system (in module) opens gas valve and
electronically ignites pilot. After pilot flame has been
established and proven by the control module, the main valve
circuit opens and pilot lights main burners.
3. Heat builds up in the furnace and starts the fan. The heated air
comes out the front bottom louvered panel at floor level.
4. When the thermostat setting is reached, it shuts off the main
burner.
5. The fan runs until the heat is removed from furnace, then it
turns off.
IMPORTANT
KEEP BURNER AND CONTROL COMPARTMENT CLEAN.
SAFETY LIMIT CONTROL
These furnaces are protected against unsafe operation by three
automatic safety controls: (1) The electronic ignition system; (2) A
limit switch shuts down the main burner to prevent overheating
the furnace cabinet; this limit switch will reset when furnace cools;
(3) A thermal overload protects the motor against burnout caused
by current surges or if anything should block the flow of air
through the furnace, the switch will turn the main burner off. When
motor cools down, this switch will reset itself. This switch cannot
be adjusted.
WARNING: Danger of ignition flash and eye injury
or blindness. Protect your eyes. Never attempt to
light pilot with gas control valve knob in "on"
position. Flashback could occur.
NOTE
Models 3508231; 3508232 are equipped with a single speed fan.
TWO-SPEED FAN OPERATION MODELS: 5508231; 5508232
Blower will first operate at low speed then shift to high speed as
the furnace heats up.
WARNING: The surface of the furnace is hot during
operation. Keep children, clothing, furniture, and
flammable material away from it.
On new installations the gas lines will be filled with air and it may
take several minutes to establish the pilot flame.
Keep all access doors and panels in place except for inspection
and maintenance.
WARNING: Danger of property damage, bodily
injury or death. If the furnace overheats or fails to
shut off, close manual gas valve for the furnace
before turning off electric power.