2
2
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Design of 3-WAY FLOW LOGIC
3. Electrical Wiring
3-3. Wiring System Diagrams
U2
U1
1
2
1
2
2
1
U2
U1
4
3
3
4
5
2
1
WHT
Remote
controller
BLK
2
1
U2
U1
1
2
1
2
U2
U1
1
2
1
2
U2
U1
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
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
F
Ground
D
D
C
Ground
C
Ground
Inter-outdoor-unit control wiring
NOTE
(1) Refer to Section 3-2. “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.
(4) Regarding the R.C. address setting, refer to pages
107 and 112 in the Installation Instructions. Auto
address setting can be executed by remote con-
troller automatically.
1(L)2(N)
Power
supply
U1
Inter-unit
control wiring
U2
Remote
controller
8P terminal board
R1 R2
1
2
U1
U2
R1
R2
NKSFL, NDLP Type
NWFL Type
1(L)2(N)
4 5
5
4
2
1
Power
supply
Inter-unit
control wiring
5P terminal board
1(L)
2(N)
Power
su
pply
U1
Inter-
u
nit
control wiring
U2
Remote
controller
R1
R2
NK2FL, NKFL, NPFL Type
7P termin
a
l
b
o
a
rd
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