1-10-15
11
Recommended Wire Length and Wire Diameter for Power Supply System
Control wiring
(C) Inter-unit
(between outdoor
and indoor units)
control wiring (D) Remote control
wiring
(E) Control wiring
for group control
0.75 mm
2
(AWG #18)
Use shielded
wiring*
0.75 mm
2
(AWG #18)
0.75 mm
2
(AWG #18)
Max. 1,000 m Max. 500 m Max. 200 m (Total)
NOTE
*
With ring-type wire terminal.
(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely
following the wiring diagram.
WARNING
(2) This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB)
or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case of
equipment breakdown or insulation breakdown.
Earth Leakage Circuit Breaker (ELCB) must be incorporated in the fixed wiring in accordance with
the wiring regulations.
The Earth Leakage Circuit Breaker (ELCB) must be an approved 10 - 16 A, having a contact
separation in all poles.
(3) To prevent possible hazards from insulation failure, the unit must be grounded.
(4) Each wiring connection must be done in accordance with the wiring system diagram. Wrong wiring may cause the
unit to misoperate or become damaged.
(5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan.
(6) Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no responsibility
for any damage or misoperation that occurs as a result of such unauthorized changes.
(7) Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL
ELECTRICAL CODES before beginning.
You must ensure that installation complies with all relevant rules and regulations.
(8) To prevent malfunction of the air conditioner caused by electrical noise, care must be taken when wiring as follows:
The remote control wiring and the inter-unit control wiring should be wired apart from the inter-unit power wiring.
Use shielded wires for inter-unit control wiring between units and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop designated by the
manufacturer, because special-purpose tools are required.
General Precautions on Wiring
Electrical Wiring
Indoor unit
Type
(B) Power supply
Time delay fuse or
circuit capacity
2.5 mm
2
U2, E1, T2, F1 Max. 130 m 10-16 A
Type
(B) Power supply
Time delay fuse or
circuit capacity
2 mm
2
K2 Max. 130 m 10-16 A
Wiring System Diagrams
R1
R2
U1
U2
L N
Power
supply
Type E1
L N U1 U2 R1 R2
Type T2, F1
Power
supply
Remote
controller
wiring
Remote
controller
line
Inter-unit
control
wirin
Inter-unit
control
wiring
g
unit
control
wiring
NOTE
(1)
(2)
(3)
(4)
Refer to section “Recommended Wire Length and Wire
Diameter for Power Supply System” for the explanation
of “B”, “C” and “D” in the above diagram.
The basic connection diagram of the indoor unit shows the
terminal boards, so the terminal boards in your equipment
may differ from the diagram.
Refrigerant Circuit (R.C.) address should be set before
turning the power on.
Regarding R.C. address setting, refer to the installation
instructions supplied with the remote controller (optional).
Auto address setting can be executed by the remote
controller automatically. Refer to the installation instructions
supplied with the remote controller unit (optional).
(1) When linking the outdoor units in a network, disconnect the terminal extended from the short plug
from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.)
For a system without link (no wiring connection between outdoor units), do not remove the short plug.
(2) Do not install the inter-unit control wiring in a way that forms a loop. (Fig. 1-10-2)
Outdoor unit Outdoor unit Outdoor unit
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
Prohibited
Prohibited
Fig. 1-10-2
Fig. 1-10-1
(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting. (Fig. 1-10-3)
Outdoor unit Indoor unit Indoor unit
Indoor unit Indoor unit
NO
Branch point
Fig. 1-10-3
CAUTION
U1 U2 R2R1
L N
4P terminal board
2P terminal board
Remote
control
wiring
Power
supply
Type U2
L2
L1
U2
U1
L3
N
L1
L2
L3
N
U2
R2
U1
R1
R2
R1
L
N
U2
U1
2
1
D
B
L
N
L
N
2
1
B
C
C
L
N
L
N
U2
U1
N
L
Power supply
230-240V ~ 50Hz
Remote
controller
WHT
BLK
2
1
D
2
1
Remote
controller
WHT
BLK
Power supply
230-240V ~ 50Hz
Power supply
400-415V, 3 N~, 50Hz
Ground
Ground
* 3-phase model connections
Outdoor unit (3-phase)
INV unit
Ground
Indoor unit
Indoor unit
Ground
* Single-phase model connections
Power supply
230-240V ~ 50Hz
Outdoor unit (single-phase)
INV unit
(
: Functional earthing)
Type K2
7P terminal board
Power
supply
Inter-unit
control
wiring
Remote
control
wiring
L N U1 U2 R1 R2
SM830266-00_大洋州向けR32シングルTD&SM.indb 15 18/03/29 10:20:00
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