Wiring The System - Dometic 620412.331 Installation Instructions Manual

H. Wiring The System
Reach up into the return air opening and pull the re-
maining wires down.
1. Connection Of Low Voltage Wires
CAUTION
Disconnect the positive (+) 12 volt DC termi-
nal at the supply battery. Damage to equip-
ment could occur if the 12 volt DC is not shut
off.
If solar panel is installed see instructions packaged
Note:
with solar panel option.
Note: If using the Genesis Air Filtration System steps "a"
and "b" are to be completed when installing the decorative
cover.
Note: Wire colors listed for the seven conductor cable are the
most common used in the RV industry. Wire Colors may
vary.
a. Connect the previously run 12 VDC to the red
and black wires protruding from the units return
air opening. Connect +12 VDC to the red wire;
–12 VDC to the black wire.
b. Connect the previously run furnace thermostat
wires (if applicable) to the blue/white wires
protruding from the units return air opening. The
polarity of these connections does not matter.
c. Connect red/white wire protruding from the units
return air opening to the seven wire cable
connected at thermostat +7.5 terminal.
d. Connect the green wire protruding from the units
return air opening to the seven wire cable
connected at thermostat "GND" terminal.
e. Connect the yellow wire protruding from the
units return air opening to the seven wire cable
connected at thermostat "COOL" Terminal.
f. Connect the tan wire protruding from the units
return air opening to the seven wire cable
connected at thermostat "FAN" terminal.
g. Connect the blue wire protruding from the units
return air opening to the seven wire cable
connected at thermostat "HI FAN" terminal.
h. Connect the orange wire protruding from the
units return air opening to the seven wire cable
connected at thermostat "HS/HP" terminal (if
applicable).
i. Connect the white wire protruding from the units
return air opening to the seven wire cable
connected at thermostat "FUR" terminal (if ap-
plicable).
Disconnect 120 volt AC. Failure to follow these
instructions could create a shock hazard
causing death or severe personal injury.
620412, 620415, 620425 & 620426 Series Installation Instructions
2. Connection Of 120 Volt Power Supply
a. Route power supply line through Romex con-
nector into junction box on side away from the
ceiling template. Tighten connector, being care-
ful not to pinch or short wires.
b. Connect white to white; black to black; and
This product is equipped with a 3-wire
(grounded) system for protection against
shock hazard. Make sure that the appliance is
wired into a properly grounded 120 volt AC
circuit and the polarity is correct. Failure to do
so could result in death, personal injury or
damage to the equipment.
green to green or bare copper wire using appro-
priate sized twist connectors.
c. Tape the twist wire connectors to the supply
wire to assure they don't vibrate off.
d. Push the wires into the box.
e. Install the cover onto the junction box.
I. Installing Decorative Inside Cover
Installing unit with 3105007 or 3105935 Return
Air Cover. For Genesis Air Filtration System
Return Air Kit, see page 14.
1. Remove the return air grill from the return air cover.
2. Place the return air cover up to the ceiling tem-
plate.
3. Install cover to template with #8 x 3/8" blunt point
Phillips head screws provided (6 required).
4. Reinstall filter return air grill into return air cover.
Align tabs with mating notches and snap into place
FIG. 23
Hole
Plugs
5. Install two hole plugs into screw holes in back of
return air cover. See FIG. 23.
6. This completes the installation of the air conditioner.
We recommend that power be supplied to the air
conditioner and check for proper operation. Refer to
13
Return Air
Cover
Return
Air Grill