Operatingyour Furnace - ICP C8MPL User's Information Manual

User's Information Manual
Set the room thermostat slightly above room temperature. This will
automatically signal the furnace to start. The inducer motor will
start, and the hot surface igniter will have an orange glow. After
about 32 seconds (from the call for heat at the thermostat), the gas
valve permits gas to flow to the main burners where it is ignited.
When the flame is firmly established, the igniter shuts off. Hot
flames begin to warm the furnace's heat exchanger. After a time
delay of 30 seconds (45 seconds for low-stage on two-stage fur-
naces) the furnace blower is switched on.
NOTE: If the main burners fail to ignite, the furnace control system
will go through three more ignition cycles. Then, if burners fail to
ignite, the system will lockout. If lockout occurs, or the blower
doesn't come on - shut down your furnace and call a Qualified Ser-
vice Agency for service.
PressureSwitch
The furnace is equipped with one or more pressure switches to shut
down the furnace under various flue conditions. The switches are
connected to the furnace by factory supplied tubing.
OperatingYour Furnace
Keep the blower access door and all access panels in place except
for inspection or maintenance.
Before starting your furnace be sure you read and understand all of
the procedures in this manual. Check to make sure the furnace filter
is clean and correctly installed.
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in
personal injury and/or death.
Provisions for combustion and ventilation air
must be provided for in accordance with
installation instructions supplied with furnace.
StartingThe Furnace
See Figure 6 for an illustration of the gas control valve.
1. Turn the thermostat to its lowest temperature setting or to
OFF if equipped with a System Select Switch.
2. Turn OFF all electric power to the furnace at the disconnect
switch or circuit breaker.
3. Remove the burner compartment door by removing the
two(2) screws securing the door in front and lifting the door up
and outwards. Removing the door will expose the gas control
valve knob.
4. Turn the gas control valve to the OFF position. See Figure 6.
5. Wait five minutes to clear out any gas. If you then smell gas,
STOP! Follow the safety information on the cover of this
manual. If you do not smell gas, go to the next step.
6. Turn the gas control valve to the ON position. See Figure 6.
7. Reinstall all doors.
8. Turn ON all electrical power to the furnace.
9. Set the thermostat to the desired temperature and the Sys-
tem Select Switch to HEAT.
The furnace will activate an igniter which lights the main burners.
Turning Off The Furnace
Set the thermostat to the lowest temperature setting or set System
Select Switch to OFF, if so equipped.
Should overheating occur or the gas control valve fail to shut
off, shut off the manual equipment shutoff valve to the furnace
before shutting off the electrical supply.
Extended Shutdown
1. Set thermostat to lowest temperature setting or set thermo-
stat System Select Switch to OFF, if so equipped.
2. Turn Manual Equipment Shutoff Valve for furnace to OFF
position, Figure 6 (at right angle or 90 ° to gas line).
3. Remove the burner compartment door by removing the two
(2) screws securing the door in front and lifting the door up
and outwards. Removing the door will expose the gas con-
trol valve knob.
4. Turn OFF electric power to the furnace at the disconnect
switch or circuit breaker. (May be left ON for set-back type
thermostat with batteries, provided thermostat has system
select switch placed in the OFF position.)
5. Turn the the gas control valve to the OFF position. See
Figure 6
6. Reinstall all doors.
PropaneGas Model Furnaces
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in death,
personal injury and/or property damage.
Propane gas is heavier than air. Leaking gas could
settle in low areas such as crawl space. If you
suspect the presence of gas, follow the
instructions on the cover of this manual.
If your propane gas furnace is installed in an excavated or low lying
area, we recommend that you contact your propane gas supplier
about installing a warning device that would alert you of a gas leak.
FrozenWater Pipe Hazard
FROZEN AND BURST WATER PIPE HAZARD.
Failure to follow this caution may result in burst
water pipes, and/or property damage.
Furnace may shut down. Do not leave your home
unattended for long periods during freezing weather
without turning off water supply and draining water
pipes or otherwise protecting against the risk of
frozen pipes.
Your furnace is designed solely to provide a safe and comfortable
living environment. The furnace is NOT designed to ensure that wa-
ter pipes will not freeze. It is equipped with several safety devices
that are designed to turn the furnace off and prevent it from restart-
ing in the event of various potentially unsafe conditions.
If your furnace remains off for an extended time, the pipes in your
home could freeze and burst, resulting in water damage.
If the structure will be unattended during cold weather, you should
take these precautions.
1. Turn off the water supply to the structure and drain the water
lines if possible and add an antifreeze for potable water to
drain traps and toilet tanks. Open faucets in appropriate
areas.
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