Carrier COMFORTLINK 48HG014, Installation Instructions Manual

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2
INSTALLATION
1. Remove return end cover and save screws for reuse. See
Fig. 2.
2. As shown in Fig. 3, the power exhaust motor is factory
wired to terminal 1 (high speed). To change motor speed,
move the black wire from terminal 1 to terminal 2 (medi-
um speed) or terminal 3 (low speed). If high speed is
desired, no wiring changes are required. The motor
closest to the control box is PEM1. The motor furthest
away from the control box is PEM2.
3. Position the power exhaust damper assembly at the return
end of the unit. Add seal strip to the edges of the hood
assembly. See Fig. 4. The long piece of seal strip is for the
top and bottom and the short piece is for the two sides.
4. Remove patch plate attached to the bottom of the com-
pressor partition behind compressor B1. Save screws.
5. Feed 6-pin connector of the motor harness through hole
created by the removal of the patch plate. Pull as much
wire through the hole as possible without causing damage
to the harness.
6. Place the power exhaust/damper assembly into the unit.
The accessory should pivot on the unit end panel. See
Fig. 5.
7. Fold power exhaust/damper assembly back into the unit
as shown in Fig. 6.
8. Install the side brackets using the screws included ( 1 /
4
x
3 /
4
-in.). Be sure to properly position the hood. See Fig. 7.
9. Tilt the assembly out of the unit and into final operating
position. See Fig. 8.
10. Secure the assembly using the screws removed earlier
from Step 1.
11. Snap the 6-pin connector of the control box harness into
the plug plate provided with the accessory.
12. Plug the 6-pin connectors together (PL9). Bundle up
excess wire in the motor harness and secure with a
wire tie. When bundling wires, be sure to gather wires
as close as possible to compressor partition so as to
reduce the overall length of the wires. Push excess
wire through hole in partition. Secure plate with
screws originally used to secure patch plate. This will
ensure that the extra wire length will not come into
contact with moving parts.
13. Remove the control box cover and install the two power
exhaust contactors to the side of the control box using the
screws included with the kit (8-18 x
1
/
2
-in.). See Fig. 9.
14. Install the plastic snap bushing into the bottom of the con-
trol box as shown in Fig. 10.
15. Route the power exhaust harness through the compressor
section and into the control box, through the snap bush-
ing. See Fig. 10.
16. Connect the wires of the harness in the control box as
shown in the wiring diagram. The harness wires are
labeled to match the corresponding component and
connection position.
When removing panels from the unit, be careful not to
damage roof or other surfaces with the panels.
Fig. 2 — Unit Return End (48/50HG Units)
LEGEND
Fig. 3 — Power Exhaust Motor Wiring
(48/50HG Units)
CAP — Capacitor
PEM — Power Exhaust Motor
PL — Plug
Fig. 4 — Hood Assembly