15
SPECIFICATIONS FOR ELECTRICAL WORK
10
10-1. FIELD ELECTRICAL WIRING (POWER WIRING SPECIFICATIONS)
Indoor unit model
Phase
Outdoor unit
Frequency & Voltage
Power supply
Max. Permissive System Impedance (
"
)
Outdoor unit input capacity
*1
Main switch (Breaker)
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
*2
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
*3
Outdoor unit L1-N, L2-N, L3-N
Indoor unit-Outdoor unit S1-S2
*4
Indoor unit-Outdoor unit S2-S3
*4
Remote controller-Indoor unit
*4
Wir
ing
Wire No
.
O
siz
e (mm
2
)
Circuit
rating
RP200, 250
3N~(3ph 4-wires), 50Hz,
380-400-415V
0.25
32A
4
o
Min. 6
1
o
Min. 6
Cable length 50 m : 3
o
4 (Polar) / Cable length 80 m : 3
o
6 (Polar)
1
o
Min. 2.5
2
o
0.69 (Non-polar)
AC 220-230-240V
AC 220-230-240V
DC24V
DC12V
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2. Max. 80 m Total Ma including all indoor/ indoor connection is 80 m.
· Use one cable for S1 and S2 and another for S3 as shown in the picture.
*3. A 10 m wire is attached in the remote controller accessory.
*4. The voltage are NOT against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.
Notes:
1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord.
(Design 245 IEC 57)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
The earth wire should also be thicker than the power supply cord so that it can stand any surge of electricity when trouble occurs.
380/400/415V 50Hz
Three phase (4 wires)
Isolator (Switch)
A-Control
Outdoor
Unit
A-Control
Indoor
Unit
3 poles isolator (Switch)
S1
S2
S3
S1
S2
S3
.
Warning:
In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals
when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
S1
S2
S3
1
2
S1
S2
S3
S1
S2
S3
Indoor/outdoor
unit connection
cable
Indoor
unit
Unit
power
supply
Outdoor
unit
Remote
controller
L
3
L
2
L
1
B
N
B
Earth leakage breaker
C
wiring circuit breaker or
isolating switch
C
B
B
Earth leakage breaker
C
wiring circuit breaker or
isolating switch
C
1
2
1
2
S1
Indoor
unit
S2
S3
S1
S2
S3
S1
S2
S3
Unit
power
supply
Indoor/outdoor
unit connection
cable
Indoor
unit
Outdoor
unit
Remote
controller
Outdoor
unit
L
3
L
2
L
1
N
B
Earth leakage breaker
C
wiring circuit breaker or
isolating switch
1
2
1
2
1
2
S1
S2
S3
S1
S2
S3
S1
S2
S3
S1
S2
S3
Indoor/outdoor
connection cable
Indoor
unit
Indoor
unit
Indoor
unit
Remote
controller
Unit
power
supply
Outdoor
unit
L
3
L
2
L
1
B
N
C
1:1 system
Synchronized twin and triple system Electrical wiring
• Synchronized twin
• Synchronized triple
OC338B-1.qxp 06.7.11 10:49 AM Page 15
