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FIg. 12
Step a
Remove At
Perforation
Step c
Use As
Packaged
9.
Install ceiling template by sliding lower duct over
upper duct. See FIG. 13.
10. Hold the ceiling template up to the 14-1/4" x 14-1/4"
(±1/8") opening.
a.
Start each mounting bolt through the ceiling
template and up into the unit base pan by hand.
See FIG. 13.
FIg. 13
Unit Return Air
Opening
Finger
Tight
•
EVENLy tighten the three bolts to a
torque of 40 to 50 inch pounds. This will
compress the roof gasket to approxi-
mately 1/2". The bolts are self locking
so over tightening is not necessary.
See FIg. 13.
If bolts are left loose there may not be an ad-
equate roof seal or if over tightened, damage
may occur to the unit base or ceiling template.
Tighten to torque specifications listed in this
manual.
Upper Discharge
Air Duct
Step b
Remove At
Perforation
Lower Discharge
Air Duct
Slide Lower Air
Discharge Duct
Over Upper Duct
Mounting
Bolt
Roof
gasket
Tighten To Com-
press gasket To
1/2"
H. Wiring The System
Reach up into the return air opening and pull the re-
maining wires down. See FIG. 11.
1. Low Voltage Wire Connections
Disconnect the positive (+) 12 VDC terminal
at the supply battery. Damage to equipment
could occur if the 12 VDC is not shut off.
a. Connect the previously run 12 VDC wires to
the red and black wires protruding from the
unit 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 wires protrud-
ing from the return air opening. The polarity
of these connections does not matter.
c. Terminate the 4 conductor communication
cable(s) protruding into the 14-1/4" x 14-1/4"
(±1/8") roof opening. The cable(s) must be
terminated with a telephone RJ-11-6C4P con-
nector. Refer to the crimp tool manufacturer
for crimping instructions.
Important:
RJ-11-6C4P connectors must be installed
as shown in FIg. 4A & 4C.
d. Plug the 4 conductor communication cable into
the RJ-11-6C4P telephone coupler protruding
from the return air opening.
e. Plug the remote temperature sensor cable into
the white 2 pin connector protruding from the
return air opening.
f.
Connect the previously run Energy Manage-
ment System wires (if applicable) to the yellow
wires protruding from the return air opening.
The polarity of these connections does not
matter.
g
If an automatic generator start (AGS) kit is in-
stalled, follow installation instructions furnished
with AGS kit.
2. 120 VAC Power Supply Connection
Disconnect 120 VAC. Failure to follow these
instructions could create a shock hazard
causing death or severe personal injury.
Note: Wiring must comply with NFPA 70: National Elec-
trical Code regulations and any State or Local Codes or
regulations.
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 pinch or short wiring.
8
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