1. Specifications
1
2
3
4
5
I-105
1-11 Installation Instructions
■ Electrical Wiring
• Indoor Unit
(F) Power Supply
Power Supply Terminal Base
Capacity Max. Wire
2.5 mm
2
Diameter
X, S, AS, T, U, SL 245 m 15 A 50 A 14 mm
2
(AWG#6)
K 588 m 15 A 25 A
5.5 mm
2
(AWG#10)
D 89 m 15 A 50 A 14 mm
2
(AWG#6)
Time Delay
Fuse or
Circuit
Capacity
Type
NOTE
1) Refer to the Wiring System Diagrams (Ref. next
page) for the meaning of “A”, “B”, “C”, “D”, “E”,
and “F” in the above tables.
2) Inter-Unit Control Wiring (c) has no polarity.
But for other wiring, respect polarity.
Be sure to connect as shown in the Wiring Sys-
tem Diagram.
3) The basic connection diagram of the indoor unit
shows the 8P terminal board, so the terminal
boards in your equipment may differ from the
diagram.
4) In accordance with conformity of EC Directive No.
89/336/EEC, when connecting power supply, it
should be considered guidance showing below.
* Do not share a common installation group with
other equipment.
* Be sure that supply network impedance is
sufficiently low (
I
ZSYS
I
[
RΩ).
It may be necessary to consult the power
supply authority before connection of the air
conditioner to a low-voltage public network.
1(L)2(N)
Power
supply
U1
Inter-unit
control wiring
U2
Remote
controller
8P terminal board
0511_M_I
R1R2 R3
1 2 U1 U2 R1 R2 R3
1(L)2(N)
45
12345
123
Power
supply
Inter-unit
control wiring
Remote
controller
5P terminal board + 3P terminal board
0512_M_I
Only for K type
Control Wiring
(C) Inter-Unit Control Wiring (D) Remote Control Wiring (E) Control Wiring For Group Control
0.75 mm
2
(AWG#18) 0.75 mm
2
(AWG#18) 0.75 mm
2
(AWG#18)
Use Shielded Wiring
Max. 1000 m Max. 500 m Max. 500 m
Models RΩ Remarks
250 type (3 phase)—Not necessary to consider supply network impedance
360 type (3 phase) 0.192Conforms to the local code
480 type (3 phase) 0.167Ditto
250 type (1 phase) 0.126Ditto
R407C Models
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