1
2
3
1
2
3
1
2
3
1
2
3
Indoor unit D
Indoor unit B
Indoor unit A
Indoor unit C
Ground
Power:
Single-phase,
230/208VAC 60HZ
Power switch
(not provided)
Outdoor unit A
Terminal board
Label A
Inter-unit cables
#14 (not provided)
Terminal board
Inter-unit cables
#14 (not provided)
Terminal board
Label B
Label C
Inter-unit cables
#14 (not provided)
Terminal board
Inter-unit cables
#14 (not provided)
Terminal board
Label D
A
B
C
D
Power cable (not provided)
(#12: Less than 85 ft.)
Be sure to perform grounding.
Attach a ground wire to either the
outdoor unit or indoor unit.
If there is a grounding terminal
inside the room, use the grounding
screw inside the indoor unit.
Be sure to apply the provided labels to both
ends of the inter-unit cables to prevent mis-
wiring. The units will not function if the wiring
connections are incorrect.
A is the indoor unit with
refrigerant tubing that is
connected to service valve
A (top) of the outdoor unit.
refrigerant tubing that is
connected to service valve
B (top) of the outdoor unit.
B is the indoor unit with
refrigerant tubing that is
connected to service valve
C (top) of the outdoor unit.
C is the indoor unit with
refrigerant tubing that is
connected to service valve
D (top) of the outdoor unit.
D is the indoor unit with
1 2
1 2 3 4 5 6 7 8 9 10 11 12
Power supply
(conduit)
Inter Unit
(conduit)
# ... AWG (American Wire Gauge)
22
5-5. Wiring Instructions for the Outdoor Unit
G Be sure to correctly align inter-unit cables A, B, C and D.
G Use a dedicated A/C circuit for power.
G To make connections to the outdoor unit, remove the
inspection panel and tubing panel.
G Do not bring the inter-unit cables or power cable into
contact with tubing or service valves.
G Use outdoor unit cable fasteners and fasten the inter-
unit cables at the location where the cables are double-
sheathed.
G Arrange the wiring so that the inter-unit cables are con-
tained in the inspection panel and tubing panel, as
shown in Fig. 31.
CAUTION
Fig. 31
07-155 CMH1972-3172 6/6/07 9:34 AM Page 22
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