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5-3. Wiring System Diagram
U2
U1
L2
L1
L2
L1
R2
R1
U2
U1
2
1
WHT
Remote
controller
BLK
2
1
U2
U1
U2
U1
U2
U1
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
208 / 230 V, 1ø, ~60Hz
Ground
Ground
L1
L2
L1
L2
L1
L2
L1
L2
BLK
2
1
Power supply
208 / 230 V, 1ø, ~60Hz
Power supply
208 / 230 V, 1ø, ~60Hz
Power supply
208 / 230 V, 1ø, ~60Hz
Power supply
208 / 230 V, 1ø, ~60Hz
B
B
B
Ground
Ground
Ground
Ground
Ground
C
Ground
D
D
C
Ground
C
Ground
L2
L1
R2
R1
L2
L1
R2
R1
L2
L1
R2
R1
NOTE
(1) Refer to Section 5-2. “Recommended Wire Length
and Wire Diameter for Power Supply System” for
the explanation of “A,” “B,” “C,” “D,” and “E,” 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
72. Auto. address setting can be executed by
remote controller automatically.
Refer to page 72 – 76.
K Type
1(L1)2(L2)
U1 U2
123 45
Power
supply
Inter-unit
control wiring
5P terminal board
1(L1) 2(L2)
Power
supply
U1
Inter-unit
control wiring
U2
Remote
controller
R1
R2
X, A, U, D, T Type
7P terminal board
07-056 Mini_ECOi_II_NA 3/19/07 2:41 PM Page 58