TO LIGHT UNIT
WARNING:
1. Do not turn off the electrical power to unit without first
turning off the gas supply.
2. Before attempting to start the gas heating section,
familiarize yourself with all the procedures that must
be followed.
If you do not follow these instructions exactly, a fire or
explosion may result, causing property damage, serious
injury, or death.
1. Set the temperature selector on room thermostat to the
lowest temperature setting and set system switch to HEAT.
2. Close the external manual shutoff valve.
3. Turn off the electrical supply to the unit.
4. Remove the front access panel with a 5/16 in. nut driver.
5. Move the selector switch on the internal gas valve to the
OFF position and wait 5 minutes.
6. Move the selector switch on the internal gas valve to the ON
position.
7. Replace the front access panel.
8. Turn on the electrical supply to unit.
9. Open the external manual shutoff valve.
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 for heat, there is a lockout.
11. Set the temperature selector on room thermostat to desired
setting.
WARNING:
1. If the main burners fail 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 requirements could result in
serious injury or death.
TO SHUT UNIT OFF
WARNING:
Do not turn off the electrical power to unit
without first turning off the gas supply.
Failure to follow these procedures can result in fire,
serious injury, or death.
NOTE:
If unit is being shut down because the heating season has
ended, make sure to turn 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.
1. Set the temperature selector on room thermostat to lowest
temperature setting and set system switch to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the front access panel.
5. Move the selector switch on the internal gas valve to the
OFF position.
6. Replace the burner access panel.
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
—2—
