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Operating Your Furnace
Keep the blower access door and upper access panel
in place except for inspection or maintenance. An
automatic switch prevents furnace operation if the
blower door is not in place.
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.
STARTING THE FURNACE
See page 5 or 6 for location and illustration of gas
valve.
1. Turn the thermostat to its lowest temperature
setting or to OFF if equipped with a System
Select Switch.
2. Turn Manual Shutoff Valve, in the gas line, to
OFF position, should be a right angle or 90 ° to
gas line.
3. Turn OFF electric power to furnace at disconnect
switch or circuit breaker.
4. Remove furnace access panel, exposing gas con-
trois and burner compartment.
5. Locate gas valve and identify settings.
The valve is marked with ON -- OFF positions.
6. Turn the knob all the way to OFF. Make sure it
has been in OFF for at least 5 minutes before
proceedint].
7. Turn the contrQ! knob to ON (Depress knob to
turn on some Honeywell valves).
Replace access panels and doors.
Turn ON electric power for furnace,
Open the,-Manual Shutoff Valve in the gas4ine,
: ,, ..... .... ,, • , ,.. -
Set therm0stat:to desired temperature-and
System Select Switch to HEAT if equipped.
The furnace witI begin sparkingto ignite the pilot flame
or the hot surface ignitor will heat up to ignite the gas.
When the system verifies a steady flame the ignition
system will shut off.
.
9.
10.
11.
WIHH HOT SURFACE
IGNITION SYSTEM
Furnace will make several attempts to lite before go-
ing into lockout. Each attempt requires a longer time
with the total cycle taking approximately 8-10
minutes.
If air remaining in the tines on a new installation
prevents the furnace from lighting ONE additional cy-
cle may'be tried, tf furnace does not light, turn the
thermostat to its lowest setting. Wait one minute,
then turn it back up abovethe temperature shown on
the thermometer. This starts the ignition cycle over
again. DO NOT REPEAT MORE THAN ONCE. If fur-
nace will not light, call a qualified Service Agency.
TURNING OFF THE FURNACE
1. Set the thermostat to the lowest setting or set
System Select Switch to OFF if equipped.
,_Shouidoverheating occur or the gas supply fail to
shut off, shut off the manual gas valve to the fur-
nace before shutting off the electrical supply.
EXTENDED SHUTDOWN
1. Set thermostat to lowest setting or set System
Select Switch to OFF if equipped.
2. Turn Manual Shutoff Valve to off position, right
angle or 90 D to gas line.
3. Turn electric power off. (May be left "ON" for
set-back or chronograph type thermostat with
batteries, provided thermostat has a system
select switch to place in the "OFF" position.)
4. Turn the gas valve control knob to "OFF".
Winter Shutdown
tf there is the possibility of freezing temperatures,
remove the Condensate drain trap and empty to pre. *,
vent freezing. ........ ....... ....
L P Model Furnaces
With Spark to Pilot Ignition (System Retries)
The ignition system will spark to light the pilot for 90
seconds. If the pilot does not light within 90 seconds
the system will shut off for 5 minutes and then it will
try again for 90 seconds. It will continue to cycle un-
til the pilot lights, (90 seconds ON/5 minutes OFF).
If the unit does not start after 3 tries or approximate-
ly 20 minutes, shut ,the unit off at the thermostat and
call a qualified Service Agency. ..
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