30
4-3. Wiring System Diagram
NOTE
(1) See the section “4-2. Wire Length and Wire Diameter for
Power Supply System” for the explanation of “A,” “B,” “C,”
“D,” “E” and “F” in the above diagram.
(2) The basic connection diagram of the indoor unit shows the
6P terminal board, so the terminal boards in your equipment
may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding the R.C. address setting, it can be executed by
remote controller automatically. See the section “7-4. Auto
Address Setting”.
U1 U2
1
2
L1
L2
L3
N
L1
L2
L3
N
4P terminal board
4P terminal board
4P terminal board
Power supply
(14 HP, 16 HP, 18 HP, 20 HP)
Power supply
(8 HP, 10 HP and 12 HP)
Type ME2
Inter-outdoor unit
control wiring
Inter-unit
control wiring
U2
U1
R2
R1
L
N
R2
R1
R2
R1
R2
R1
2
1
2
1
U2
U1
L
N
U2
U1
L
N
U2
U1
L
N
2
1
2
1
2
1
D
E
C
B
L
N
L
N
L
N
L
N
2
1
B
B
B
A
A
C
D
D
C
2
1
L1
L2
L3
N
2
1
L1
L2
L3
N
C
L1
L2
L3
N
L1
L2
L3
N
U2
U1
F
Power supply
400-415V 3N~ 50Hz
Ground
Ground
Indoor unit
(No. 1)
Indoor unit
(No. 2)
Indoor unit
(No. 3)
Indoor unit
(No. n)
Power supply
400-415V 3N~ 50Hz
Outdoor unit
INV unit
Outdoor unit
INV unit
Inter-outdoor-unit control wiring
Power supply
220-230-240V~ 50-60Hz
Remote
controller
WHT
BLK
Ground
Ground
Group control :
Ground
Ground
Power supply
220-230-240V~ 50-60Hz
Power supply
220-230-240V~ 50-60Hz
Remote
controller
Remote
controller
WHT
BLK
WHT
BLK
Power supply
220-230-240V~ 50-60Hz
(
: Functional earthing)
00_340994_2WAY_Eng.indb 30
2022/8/4 14:28:41