9

4-3. Wiring System Diagrams

U2
U1
1
2
U2
U1
U2
U1
U2
U1
Group control:
2
1
WHT
Remote
controller D
A
E
Indoor
unit (No. n)
Indoor
unit (No. 1)
Indoor
unit (No. 2)
Indoor
unit (No. 3)
C
B
L
N
Ground
L
N
L
N
L
N
L
N
BLK
2
1
Power supply
220-240V 50Hz
B
B
B
Ground
Ground
Ground
Power supply
200-240V 50Hz
Power supply
220-240V 50Hz
Power supply
220-240V 50Hz
Power supply
220-240V 50Hz
Ground
C
Ground
C
Ground
C
Ground
2
1
N
L
Outdoor unit
INV unit
1
2
1
2
1
2
R2
R1
R2
R1
R2
R1
R2
R1

NOTE

(1)Refer to Section 5-2. “Recommended Wire Length

and Wire Diameter for Power Supply System” for

the explanation of “A,” “B,” “C,” “D,” and “E,” in the

above diagrams.

(2)The basic connection diagram of the indoor unit

shows the 7P terminal board, so the terminal

boards in your equipment may differ from the dia-

gram.

(3)Refrigerant Circuit (R.C.) address should be set

before turning the power on.

7P terminal board

1(L)

power

supply

2(N) U1 U2

Inter-unit

control

wiring

R1 R2

Remote

controller