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8
WIRING SPECIFICATIONS
8-1. FIELD ELECTRICAL WIRING (power wiring specifications)
Outdoor unit model
Outdoor unit power supply
Outdoor unit input capacity main switch (Breaker) *1
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L1-N, L2-N, L3-N (3 phase) *4
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2. Maximum 80 m. Total maximum including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
• Maximum 50 m. Total maximum for PEA. Wiring size 3 × 1.5 (Polar).
*3. The 10 m wire is attached in the remote controller accessory.
*4. The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
Notes: 1. Wiring size must comply with the applicable local and national code. .
2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.
(Design 60245 IEC 57)
3. install an earth line longer than power cables.
Power supply
A-Control
Outdoor Unit
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.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
Synchronized twin and triple system Electrical wiring
• Synchronized twin
Outdoor
unit
L
1
Unit
L
power
2
B
C
supply
L
3
N
S1
B Earth leakage breaker
S2
C wiring circuit breaker or
S3
isolating switch
1:1 System (Indoor: PEA-200, 250)
Outdoor
unit
L
1
Unit
L
2
power
B
C
supply
L
3
N
Indoor/outdoor
unit connection
cable
S1
B
Earth leakage breaker
S2
C
wiring circuit breaker or
S3
isolating switch
OCH679A
P200/250Y
3N~ (3 ph 4-wires), 50 Hz, 400 V
5 × Min 4
*2
Cable length 50 m:3×4 (Polar)/Cable length 80 m:3×6 (Polar)
*2
1 × Min 2.5
*3
2 × 0.3 (Non-polar)
230 V AC
*4
230 V AC
*4
24 V DC
*4
12 V DC
Isolator
S1
S2
S3
Indoor
unit
1
Remote
controller
2
Indoor/outdoor
unit connection
cable
S1
S2
S3
Indoor
unit
L
1
L
2
B
C
L
3
N
S1
S2
1
Remote
S3
controller
2
32A
3 poles isolator
S1
S2
S3
• Synchronized triple
Unit
Indoor
unit
power
B
C
supply
1
2
S1
B Earth leakage breaker
S2
C wiring circuit breaker or
S3
isolating switch
Unit
power
supply
13
A-Control
Indoor Unit
Outdoor
unit
L
1
Indoor
L
2
unit
L
3
1
Remote
N
controller
2
Indoor/outdoor
connection cable
S1
S1
S2
S2
S3
S3
Indoor
Indoor
unit
unit
1
1
2
2
S1
S1
S2
S2
S3
S3
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