
64
4-3. Wiring System Diagram
*
*
*
*
2
1
2
1
2
1
B
C
A
L1
L2
L1
L2
L1
L2
L1
L2
2
1
A
B
A
A
U2
U1
L2
L1
R2
R1
U2
U1
L2
L1
R2
R1
U2
U1
L2
L1
R2
R1
U2
U1
L2
L1
2
1
B
1
3
RC
(BLU)
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
208 / 230V, 60Hz, 1-PH
WHT
BLK
208 / 230V, 60Hz, 1-PH
WHT
BLK
208 / 230V, 60Hz, 1-PH
208 / 230V, 60Hz, 1-PH
L1 L2 U1 U2 R1 R2
1(L1) 2(L2)
U1
U2
R1
R2
1(L1) 2(L2) U1 U2
1(L1) 2(L2) U1 U2
*
*
L1
L2
L3
L1
L2
L3
D
4
2
3
1
4
3
L2
L1
L3
L2
L1
L3
ex.) W-3WAY ECO-i
Indoor
unit (No. 1)
Indoor
unit (No. 2)
Indoor
unit (No. 3)
Indoor
unit (No. n)
Power supply
Power supply
208 / 230V, 60Hz, 3-PH
208 / 230V, 60Hz, 3-PH
Power supply
Power supply
Power supply
CONNECTOR
2P(WHT)
K1 Type
Power supply
Ground
Ground
Group control:
Ground
Ground
Ground
Ground
Power
supply
Power
supply
Power
supply
Power
supply
Unit control
Line
Unit
control
Line
Unit
control
Line
Unit
control
Line
Remote
control
Line
Remote
control
Line
* Disconnect switch
(Field Supply)
Remote
Controller
Remote
Controller
Remote
Controller
Outdoor unit
INV unit
Outdoor unit
INV unit
Inter-outdoor unit control wiring
U1, E1 Types 7P terminal board
Y1, D1, T1, F1, M1, P1, R1 Types 6P terminal board
5P terminal board
5P terminal board
* NOTE:
Disconnect Switch may be needed by the
National/Local code.
ALWAYS COMPLY WITH NATIONAL AND
LOCAL CODE REQUIREMENTS.
K1 Type
Model : S-07MK1U6
S-09MK1U6
S-12MK1U6
K1 Type
Model : S-18MK1U6
S-19MS1U6
S-24MK1U6
(1) Refer to Section 4-2. “Recommended Wire Length and
Wire Diameter for Power Supply System” for the
explanation of “A,” “B,” “C,” and “D,” 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.
VRF_Indoor_US.indb 64VRF_Indoor_US.indb 64 2011/09/30 12:23:122011/09/30 12:23:12
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