2-24
Design of W-2WAY ECO-i SYSTEM Unit Specifications
1
2
3
4
5
6
7
8
3-3. Wiring System Diagrams
3. Electrical Wiring
U2
U1
3
1
2
1
2
2
1
U2
U1
4
3
3
4
5
2
1
WHT
Remot e
controlle r
BLK
2
1
U2
U1
3
1
2
1
2
U2
U1
3
1
2
1
2
U2
U1
3
1
2
1
2
2
1
WHT
Remote
controller
Group control:
BLK
2
1
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
Outdoor unit
INV unit
L1
Power supply
L2
L3
380-415V-3N 50Hz
N
Ground
Ground
Ground
Ground
Ground
L
N
L
N
L
N
L
N
BLK
2
1
2
1
4
3
3
4
5
Outdoor unit
INV unit
Power supply
220-240V 50Hz
B
B
B
Ground
Ground
Ground
Ground
A
L1
Power supply
L2
L3
N
Ground
380-415V-3N 50Hz
Power supply
220-240V 50Hz
Power supply
220-240V 50Hz
Power supply
220-240V 50Hz
Ground
C
Ground
Ground
F
Ground
D
D
C
Ground
Ground
C
Ground
Inter-outdoor-unit control wiring
G
G
G
G
Ground
NOT E
(1) Refer to Section 3-2. “Recommended 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 7P 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, refer to Section 5.
Address setting can be executed by remote controller
automatically. Refer to Section 5.
1(L) 2(N)
Power
supply
U1
Inter-unit
control wiring
U2
Remote
controller
R1
R2
AD, LD, S, X, T Type
7P terminal board
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