11.Set the temperature selector on room thermostat to desired setting.
!WARNING
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.
Flue Hood
Burners Gas Valve
A09043
Fig. 4 - Gas Heating/Electric Cooling Unit with Access Panel
Removed
To shut off unit gas heat:
!WARNING
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 the 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 external 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. 6 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.Close the external manual shutoff valve.
3.Turn off the electrical power supply to the unit.
4.Remove the control access panel. (See Fig. 3.)
5.Move the selector switch on the internal gas valve to the OFF position.
6.Replace the control access panel.
To start unit electric cooling:
Refer to Fig. 7 while proceeding with the following steps.
1.Set the temperature selector on room thermostat to highest temperature setting and set system SWITCH to OFF.
2.Close the external manual shutoff valve, if not already closed.
3.Turn ON the electrical power supply to the unit.
4.Set system switch to COOL.
5.Set the temperature selector on room thermostat slightly be- low the room temperature to start unit.
To shut off unit electric cooling:
Refer to Fig. 8 while proceeding with the following steps.
1.Set the temperature selector on room thermostat to highest temperature setting and set system SWITCH to OFF.
2.Close the external manual shutoff valve, if not already closed.
3.Turn off the electrical power supply to the unit.
NOTE: Heat Pump heating mode procedure is similar to electric cooling mode except thermostat mode is HEAT and thermostat must operate on first stage heating above the balance point that has been determined by the Dealer.
OPERATING YOUR UNIT
The operation of your unit is controlled by the indoor temperature 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:
1.During heat pump heating, increasing the thermostat setting more than 2_F (1.1_C) may cause the supplemental gas heat to be turned on for a short period of time to satisfy the thermostat. Needless use of the supplementary heat reduces potential energy savings.
2.Ice or frost tends to form on the coil during winter heating operation. Your heat pump is designed to automatically melt the ice. When in this defrost cycle, it is normal for steam or fog to rise from the outdoor unit. Do not be alarmed!
Cooling Mode
With the SYSTEM 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.
Heat Pump Heating Mode
With the SYSTEM or MODE control of your indoor thermostat set to HEAT, your unit will run in heat pump heating mode until room temperature is raised to the level you have selected. Of course, your system will run for longer periods to maintain a comfortable environment on cooler days and nights than on moderate ones.
Gas Heat Mode
Your heat pump is your primary heating source. Your system is also equipped with a supplemental gas heating source. On cold days and nights, your system will automatically turn on the supplemental heat in order to maintain the level of comfort you have selected.
When your heat pump needs additional heat to keep you comfortable, your thermostat will turn on the supplemental gas
heat.
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