Dometic 57908.321 Installation Instructions Manual page 16

Installing unit with 3105007.XXX or 3105935.XXX
Return Air Cover, continued from page 14, column A.
3. Place divider plate up to bottom of air conditioner
base pan firmly. The foam tape on the divider plate
must seal to bottom of base pan. See FIG. 17A.
Improper installation and sealing of divider
plate will cause the compressor to quick
cycle on the cold control. This may result
in fuse or circuit breaker opening and/or
lack of cooling.
FIg. 17A
Note: The adhesive on the insulation is extremely sticky.
Be sure the part is located where desired before pressing
into place.
4. With slight pressure push the divider plate against
the double sided tape on the ceiling template.
5. Locate the 1/8" x 7" x 18" self -adhesive insulation
supplied with the return air kit. Remove the backing
paper from the insulation and carefully stick onto
the ceiling template divider panel. See FIG. 18A.
FIg. 18A
a. Excess width is intended to seal the divider
plate to the sides of the 14-1/4" x 14-1/4"
(±1/8") opening. This is to help prevent cold
air discharge from circulating into the air con-
ditioner return air opening.
b. If the insulation is too high, stick excess height
of insulation to the air conditioner base pan. Do
not cover up unit rating plate.
Installing unit with 3105007.XXX or 3105935.XXX
Return Air Cover, continued on page 16, column A.
Installing unit with 3308120.XXX genesis Air Filtration
System, continued from page 14, column B.
4. Use Aluminum foil tape (not supplied) to seal the
ends of the foam divider to the sides of the open-
ing. Make sure the area behind the flange on the
ceiling template is sealed. See FIG. 18B.
Use Aluminum Foil Tape To Seal The
FIg. 18B
Foam Divider To The Sides Of 14-1/4"
x 14-1/4" (±1/8") Ceiling Opening
Route Wires
Through Slot
Catch Flange In groove Of
Return Air Cover
C. INSTALLATION OF INSIDE DECORATIVE COVER
1. Install the slider in the return air cover and raise it to
the ceiling template. Route the wires from the return
air cover through the template slot leaving about 3"
between. Position wires where they can be reached
after plastic cover is installed. See FIG. 18B. Place
the front of the return air cover against the ceiling
and slide towards the rear. The flange on the ceiling
template will catch in the groove on the return cover.
Adjust the position (right to left) and install the front
two screws. Start and tighten the remaining screws
to hold it in place.
Note: Number 10 cabinet screw can be used to replace the
two front screws to hold the plastic cover flush to the ceiling.
Connect the wires from the thermostat, control box and filter
indicator.
a. Connect the red wire from the air conditioner/heat
pump, the red wire from the filter indicator light,
with the red positive 12 VDC supply wire. See
FIG. 18B.
b. Connect the black wire from the air conditioner/
heat pump, the black wire from the filter indica-
tor light with the black negative 12 VDC supply
wire.
Note: If solar panel is installed see instructions packaged
with solar panel option.
16
CCC Ducted Installation Instructions
Make Sure To Seal
Behind Flange