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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)
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
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
(ZM35–71)
Max. 45 m
If 2.5 mm² used, Max. 50 m
If 2.5 mm² used and S3 separated, Max. 80 m
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
• Max. 50 m Total Max. for PEA. Wiring size 3 × 1.5 (Polar).
*3
Maximum 500 m (When using 2 remote controllers, the maximum wiring length for the remote controller cables is 200 m.)
*4
The figures are NOT always against the ground.
S3 terminal has 24 VDC 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 the 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.
1:1 system
Electrical wiring
Outdoor
unit
Unit
L
power
B
C
N
supply
Indoor/outdoor
unit connection
cable
S1
B Earth leakage breaker
S2
C wiring circuit breaker or
S3
isolating switch
OCH653C
ZM35/50V
~/N (single), 50 Hz, 230 V
*1
3 × Min. 1.5
*2
3 × 1.5 (Polar)
*2
1 × Min. 1.5
*3
2 × 0.3 (Non-polar)
*4
230 VAC
*4
230 VAC
*4
*4
Isolator
3 poles isolator
S1
S2
S3
Indoor
unit
1
Remote
controller
2
S1
S2
S3
16 A
24 VDC
12 VDC
S1
A-Control
S2
Indoor Unit
S3
Synchronized twin and triple system Electrical wiring
• Synchronized twin
Unit
power
B
C
supply
B Earth leakage breaker
C wiring circuit breaker or
isolating switch
• Synchronized triple
Unit
power
B
C
supply
B Earth leakage breaker
C wiring circuit breaker or
isolating switch
21
ZM60/71V
~/N (single), 50 Hz, 230 V
25 A
3 × Min. 2.5
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
230 VAC
230 VAC
24 VDC
12 VDC
Outdoor
Indoor
unit
unit
L
1
Remote
controller
N
2
Indoor/outdoor
unit connection
cable
S1
S1
S2
S2
S3
S3
Outdoor
Indoor
unit
unit
1
L
Remote
controller
N
2
Indoor/outdoor
connection cable
S1
S1
S2
S2
S3
S3
Indoor
unit
1
2
S1
S2
S3
Indoor
Indoor
unit
unit
1
1
2
2
S1
S1
S2
S2
S3
S3
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