6
GPac Users Information 7/07-2
The GPac air conditioner with gas heat is equipped with an automatic spark ignition system. There is no pilot.
In case of a safety shutdown on units with electronic temperature control, shut main disconnect
OFF
and then
back
ON
to reset ignition control. On units with an electro-mechanical thermostat, move the thermostat switch
to
OFF
and return the thermostat switch to
HEAT
. On initial start-up of the unit in the heating mode, a burn-off
of excess paint and oils remaining from the manufacturing process may cause some smoking and smell for 5-10
minutes.
Cooling Cycle
1. Set the fan switch to "Auto" and the system switch to "Off".
2. Move the cooling temperature on the wall thermostat to a point
higher
than the room temperature. Move
the heating temperature to a temperature that is
lower
than the room temperature.
3. Set the thermostats system switch to "Cool" or "Auto" position. Nothing should operate at this time.
4. Set the time delay in the control box to three minutes. Note that time delay is an option on some GPac
units and may not be on your air conditioner.
5. Remove the cover plate from the thermostat. Slowly lower the thermostat cooling temperature. Once the
indoor fan turns on, allow approximately three minutes for the compressor and outdoor fan to start.
For units equipped with the low ambient control, note that the outdoor fan may not come on immediately, because
it is cycled by refrigerant pressures. Some units have a time delay module which prevents the compressor from
restarting immediately after interruption of power. See
Cooling Mode
section of the Installation Instructions for
details on the operation of the low ambient control and the time delay.
Heating Cycle
1. Turn off electrical power to the unit.
2. Set thermostat to its lowest setting.
3. Remove heat section access panel.
4. Turn knob on the gas control valve to ON. Do not force. Never light the burner with a match or torch.
Figure 2. Gas Control Valve
5. Replace heat section access panel.
6. Turn on electrical power to the unit.
7. Set room thermostat to desired temperature.
8. On a call for heating, the air switch closes, initiating a 30 second pre-purge.
9. At end of pre-purge period, the Spark and Gas valve is energized for up to a 5 second ignition trial. Gas
valve will open.
10. Burners ignite and carryover.
ON SWITCH
