7. Replace the front access panel.
8. Turn on the electrical supply to unit.
9. Open the external manual gas 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.
FRONT ACCESS
PANEL
Fig. 2-Gas Heating/Electric Cooling Unit A°5175
71_1 /
FLUE
A/ Hood
BURNERS GAS VALVE
Fig. 3-Gas Heating/Electric Cooling Unit A05147
FIRE and EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
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.
TO SHUT UNIT OFF:
FIRE, EXPLOSION. ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
Do not turn off the electrical power to unit without first
turning off the gas supply.
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. Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the unit
and to replace any part of the control system and any gas control
which has been under water.
Refer to Fig. 5 while proceeding with the following steps.
1. Set the temperature selector on room thermostat to lowest
temperature setting and set system switch to OFF.
2. (;lose the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the f}ont access panel.
5. Move the selector switch on the internal gas valve to the OFF
position.
6. Replace the front 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.
OPERATING YOUR UNIT
The operation of your system is controlled by the indoor tempera-
ture control (Thermostat). You simply adjust the thermostat and it
maintains the indoor temperature at the level you select. Most
thermostats of heating and cooling systems have 3 controls: a
temperature control selector, a FAN control, and a SYSTEM or
MODE control. Refer to your thermostat owner's manual for more
information.
To better protect your investment and to eliminate unnecessary
service calls, familiarize yourself with the following facts:
COOLING MODE
With the SYSTEM or MODE control set to COOL, your unit will
run in cooling mode until the indoor temperature is lowered to the
level you have selected, On extremely hot days, your unit will run
for longer periods at a time and have shorter "off" periods than on
moderate days.
GAS HEAT MODE
With the SYSTEM or MODE control of your indoor thermostat set
to HEAT, your unit will run in gas heating mode until the indoor
temperature is raised to the level you have selected. On cold days
and nights, your system will typically run for longer periods of
time and have shorter "off' periods than on moderate days. This is
the same as the COOLING MODE.
MAINTENANCE AND SERVICE
This section discusses maintenance that should be performed on
your system. Most maintenance should be performed by your
dealer. You. as the owner, may wish to handle some minor
maintenance for your new unit.
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