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4-3. Wiring System Diagrams
Power supply
220-230-240V~ 50-60Hz
Ground
Remote controller
WHT
1
1
BLK
2
2
Power supply
220-230-240V~ 50-60Hz
Ground
Remote controller
WHT
1
1
BLK
2
2
Group control:
Power supply
220-230-240V~ 50-60Hz
Ground
Power supply
220-230-240V~ 50-60Hz
Ground
Remote controller
WHT
1
1
BLK
2
2
NOTE
(1) Refer to Section 4-2. "Wire Length and Wire Diameter for
Power Supply System" for the explanation of "B", "C", "D"
and "E" in the above diagram.
(2) The basic connection diagram of the indoor unit shows the
terminal boards, so the terminal boards in your equipment
may differ from the diagram. (Fig. 4-2)
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding R.C. address setting, refer to the installation
instructions supplied with the remote controller unit
(Optional). Auto address setting can be executed by
remote controller automatically. Refer to the installation
instructions supplied with the remote controller (optional).
Indoor unit
(No. 1)
L
L
N
N
B
U1
U2
D
R1
R2
Indoor unit
(No. 2)
L
L
N
N
B
U1
U2
D
R1
R2
Indoor unit
(No. 3)
L
L
N
N
B
E
U1
U2
R1
R2
Indoor unit
(No. n)
L
L
N
N
B
U1
U2
D
R1
R2
ex.) ME2 Type
Outdoor unit
INV unit
C
L1
U1
L2
U2
L3
N
1
2
C
Inter-outdoor unit control wiring
Outdoor unit
INV unit
L1
L2
1
L3
2
C
N
(
: Functional earthing)
C
8P terminal board
N
L
Power
Ground
supply
17
L1
Power supply
L2
380-400-415V 3N~ 50Hz
L3
N
380-400V 3N~ 60Hz
Ground
L1
Power supply
L2
380-400-415V 3N~ 50Hz
L3
380-400V 3N~ 60Hz
N
Ground
U1 U2 R1 R2
Unit
Remote
control
controller
wiring
line
H1 Type
Fig. 4-1
Fig. 4-2
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