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5-6. Wiring Instructions for the Outdoor Unit
CAUTION
Be sure to correctly align inter-unit cables A, B, C and D.
Attach the label
1
2
3
1
2
D
C
Indoor unit A
"A" is the indoor unit with
refrigerant tubing that is
1 2
connected to service valve
A (top) of the outdoor unit.
BK W R
Indoor unit B
"B" is the indoor unit with
refrigerant tubing that is
1 2
connected to service valve
B (top) of the outdoor unit.
BK W
Indoor unit C
"C" is the indoor unit with
refrigerant tubing that is
1 2
connected to service valve
C (top) of the outdoor unit.
BK W
Indoor unit D
"D" is the indoor unit with
refrigerant tubing that is
1 2
connected to service valve
D (top) of the outdoor unit.
BK W
Use a dedicated A/C circuit for power.
To make connections to the outdoor unit, remove the
inspection panel and tubing panel.
Do not bring the inter-unit cables or power cable into
contact with tubing or service valves.
Use outdoor unit cable fasteners and fasten the inter-
unit cables at the location where the cables are double-
sheathed.
Arrange the wiring so that the inter-unit cables are con-
tained in the inspection panel and tubing panel, as
shown in Fig. 32.
3
1 2
3 1 2
3
B
A
1
2
3 4 5 6 7 8
1
BK W
R
BKW R
D
Terminal board
4
Inter-unit cables
φ1.0 (not provided)
Label A
A
Terminal board
4
Inter-unit cables
φ1.0 (not provided)
R
Label B
B
Terminal board
4
Inter-unit cables
φ1.0 (not provided)
R
Label C
C
Terminal board
4
Inter-unit cables
φ1.0 (not provided)
R
Label D
D
Fig. 32
Outdoor unit A
Terminal board
1
2
3 4 5 6 7 8
1
BKW R BKW R
C
A
B
Fasten the
cable with cable
fasteners.
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.
20
1
2
Power:
Single-phase,
220 – 240 V
Power switch
(not provided)
Ground
Power cable (not provided)
(φ2.0 mm: Less than 15 m)
(φ2.6 mm: Less than 20 m)
(φ3.5 mm: Less than 26 m)
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