12
920-075-09
Final Installation Checklist
Correct line voltage?
Chassis deck level?
Plenum divider baffle installed?
Wall plenum caulked? Level? Flashing?
HACR type breaker/fuse?
Single circuit only?
Ductwork connected?
Chassis weather seal in place?
Wall thermostat wired correctly?
Chassis inserted into plenum?
Chassis Final Connections
With the chassis in place, you are now ready to begin chassis
connections:
A. Move the thermostat switches to "OFF" and "AUTO." This
will keep the thermostat from cycling the chassis until final
connections are complete.
B. Connect the ductwork onto the 10" collar. Plastic wireties
(field supplied) are suggested to secure the ductwork in
place. Use 2 wire ties, one for each inner and outer flex
duct sleeve.
C. Review the Final Installation Checklist on Page 12 before
replacing the power quick disconnect, reconnecting power
to the chassis, plugging in the remote thermostat harness,
or operating the chassis.
Electrical shock and moving parts hazard can cause injury or death. If you have not done so, pull out the disconnect head
found on the front of chassis before continuing installation! Disconnect external power at the breaker.
Chassis Operation
Fresh Air Door
The Fresh Air Door is an "intake" system. The fresh air door is
opened via a slide on the front of the chassis located just above
the indoor coil. Move the slide left to open and right to close the
fresh air door. The system is capable of up to 60 CFM of fresh
air @ ~.3" H20 internal static pressure.
Low Ambient Protection
Each chassis is equipped with low ambient protection in the form
of a thermistor, which will prevent compressor operation at low
suction temperature.
Room Freeze Protection
Units are shipped from the factory with the room freeze protection
disabled. Room Freeze Protection can be switched on at the
owner’s preference by moving Dip Switch 6 to
‘ON’
. This feature
will monitor the indoor room conditions and in the event that the
room falls below 40°F the unit will cycle on high fan with the
electric heater. This occurs regardless of mode.
Emergency Heat Override
In the unlikely event of a compressor failure a heat pump unit
may be switched to operate in only the electric heat mode until
repairs can be made. Moving Dip Switch 7 to
‘ON’
.
Emergency Heat Operation
In the event of a compressor failure in heat pump mode the com
-
pressor may be locked out to provide heat through the resistance
heater. This feature ensures that even in the unlikely event of a
compressor failure the room temperature can be maintained
until the compressor can be serviced. Dip switch 7 controls the
emergency heat setting (see above).
