*
*
*
*
*
*
2
1
U2
U1
4
3
3
4
5
2
1
2
1
2
1
B
C
A
L1
L2
L3
L1
L2
L1
L2
L1
L2
L1
L2
2
1
2
1
4
3
3
4
5
L1
L2
L3
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
D
2
1
B
1
3
Remote
controller
CONNECTOR
2P(WHT)
RC
(BLU)
WHT
BLK
WHT
BLK
WHT
BLK
WHT
BLK
Ground
(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.
(4) Regarding the R.C. address setting, refer to page 41.
Address setting can be executed by remote controller
automatically. Refer to page 43 – 48.
4-3. Wiring System Diagram
ALWAYS COMPLY WITH NATIONAL AND
LOCAL CODE REQUIREMENTS.
*
NOTE:
Disconnect Switch may be needed by the
National/Local code.
7P terminal board
Power supply
208 / 230V, 1ø, ~60Hz
X, U, D Types
(Except 6 series)
5P terminal board
Power
supply
Unit
control
Line
Remote
control
Line
Power
supply
Unit
control
Line
5P terminal board
Power
supply
Unit
control
Line
K Type
Model : KHX0752
KHX0952
KHX1252
K Type
Model : KHX1862
KHX1962
KHX2452
K Type
Indoor
unit (No. 1)
Remote
controller
WHT
BLK
Ground
Power supply
208 / 230V, 1ø, ~60Hz
Indoor
unit (No. 2)
Remote
controller
WHT
BLK
Ground
Power supply
208 / 230V, 1ø, ~60Hz
Indoor
unit (No. 3)
Ground
Group control:
Indoor
unit (No. n)
Power supply
208 / 230V, 1ø, ~60Hz
Ground
Outdoor unit
INV unit
Inter-outdoor unit control wiring
Ground
Power supply
208 / 230V, 3ø, ~60Hz
Outdoor unit
INV unit
Power supply
208 / 230V, 3ø, ~60Hz
Disconnect switch
(Field Supply)
*
L1 L2 U1 U2 R1 R2
6P terminal board
Power
Supply
Unit Control
Line
Remote
Control
Line
X, XM, A, U, UM,
T, F, FM Types
W-3WAYECO-iU.indb29W-3WAYECO-iU.indb29 2009/11/1714:35:392009/11/1714:35:39