10
J. Wiring The System
Reach up into the return air opening and pull the
re-
maining wires down. See FIG. 10.
1. Low Voltage Wire Connections
a. Connect the previously run +12 VDC supply
wire to the red wire protruding from the unit
return air opening.
b. Connect the previously run –12 VDC supply
wire to both the black wire protruding from
the unit return air opening and to wire of the
three wire cable that goes to the thermostat
12V– terminal.
c. Connect the previously run furnace thermostat
wires (if applicable) to the blue wires protrud-
ing from the return air opening. The polarity
of these connections does not matter.
d. Connect the red/white wire protruding from the
unit return air opening to wire of the three wire
cable that goes to thermostat 12V+ terminal.
e. Connect the orange wire protruding from the
return air opening to wire of the three wire cable
that goes to thermostat COMMS terminal.
2. 120 VAC Power Supply Connection
Disconnect the positive (+) 12 VDC terminal
at the supply battery. Damage to equipment
could occur if the 12 VDC is not shut off.
Note:
Wiring must comply with the National Electrical Code
ANSI/NFPA-70 and CSA Standard C22.1 (latest edition)
and any State or Local Codes or regulations.
Disconnect 120 VAC. Failure to obey these
instructions could create a shock hazard
causing death or severe personal injury.
This product is equipped with a 3 wire (ground-
ed) system for protection against shock haz-
ard. Make sure that the unit is wired and that
you connect into a properly grounded 120 VAC
circuit and the polarity is correct. Failure to
do so could result in death, personal injury
or damage to the equipment.
a. Route power supply line through Romex con-
nector and into junction box on side away from
the ceiling template. Tighten connector making
sure not to damage wires.
b. Connect white to white; black to black; and
green to green or bare copper wire using ap-
propriate size connectors.
c. Tape the connectors to the supply wire to as-
sure they don’t vibrate off.
d. Push the wires into the box.
e. Install the cover onto the junction box.
K. Installing Decorative Inside Cover
1. Remove the return air grill from the return air cov-
er.
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.
5. Install two hole plugs into screw holes in back of
return air cover. See FIG. 15.
6. This completes the unit installation.
Return Air
Cover
Hole
Plugs
Return
Air Grill
FIG. 15
