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TO LIGHT UNIT
l. Do not mm off the electrical power to unit without first
turning off the gas supply.
2. Before attempting to start the gas heating section, famil-
iarize yourself with all the procedures that must be
followed.
If you do not l'ollow these instructions exactly, a fire or
explosion may result, causing property damage, serious
injury, or death.
Step 1--Set the temperature selector on room thermostat to
the lowest temperature setting and set system switch to
HEAT.
Step 2--Close the external manual shutoff valve.
Step 3--Turn off the electrical supply to the unit.
Step 4--Remove the front access panel with a 5/16 in. nut
driver.
Step 5--Move the selector switch on the internal gas valve to
the OFF position and wait 5 minutes.
Step 6--Move the selector switch on the internal gas valve to
the ON position.
Step 7--Replace the front access panel.
Step 8--Turn on the electrical supply to unit.
Step 9--Open the external manual shutoff valve.
Step 10--Set the temperature selector on room thermostat
slightly above room temperature to start unit. The induced-
draft combustion-air fan will start. Main gas valve will open
and main burners should ignite within 5 seconds. If the
burner does not light within 5 seconds, the ignition module
will go into a RETRY mode after a period of approximately 22
seconds (following the 5-second ignition period).
If the burners do not light within 15 minutes of the initial call l'or
heat, there is a lockout.
Step 11--Set the temperature selector on room thermostat
to desired setting.
l. If the main burners _ail to light, or the blower fails to start,
shut down gas heating section and call your dealer for
service.
2. Never attempt to manually light the main burners on unit
with a match, lighter, or any other flame. If the electric
sparking device fails to light the main burners, refer to the
following shutdown procedures, then call your dealer as
soon as possible.
Failure to follow these reqnirements could result in serious
injury or death.
TO SHUT UNIT OFF
f:_ k','l:_ ;I : Il:[tl
Do not tuna off the electrical power to unit without first
turning off the gas supply.
Failure to follow these procedures can result in fire, serious
il_iury, or death.
NOTE: If unit is being shut down because the heating season has
ended, make sure to tuna on power to cooling system.
If unit is being shut down because of a malfunction, call your
dealer as soon as possible.
Should overheating occur or the gas supply fail to shut off', shut off
the manual gas valve to the unit before shutting off the electrical
supply.
Step 1--Set the temperature selector on room thermostat to
lowest temperature setting and set system switch to OFF.
Step 2--Close the external manual shutoff valve.
Step 3--Turn off the electrical power supply to the unit.
Step 4--Remove the front access panel.
Step 5--Move the selector switch on the internal gas valve to
the OFF position.
Step 6--Replace the burner access panel.
Step 7--Restore electrical power to the unit and set system
switch to COOL to ensure operation of the cooling system
during the cooling season.
Fig. 2--Gas Heating/Electric Cooling Unit
Front Access Panel
FRONT
ACCESS PANEL
ROUTINE MAINTENANCE
All routine maintenance should be handled by skilled, experienced
personneh Your dealer can help you establish a standard proce-
dnre.
For your safety, keep the unit area clear and free of combustible
materials, gasoline, and other flammable liquids and vapors.
To assure proper functioning of the unit, flow of combustion and
ventilating air must not be obstructed fi'om reaching the unit.
Clearance of at least 48 in. is required fi'om top of unit and on sides
except the power entry side (42 in. clearance) and the duct side (12
in. nlininmm clearance).
MAINTENANCE AND CARE FOR THE EQUIPMENT
OWNER
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
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