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WIRING SPECIFICATIONS
8
8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT (A-control application)
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
C
L1
A
B
L2
GR
D
S1
S2
S3
E
G
Note: Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit model
Outdoor unit power supply
Breaker size
Minimum circuit ampacity
Maximum rating of overcurrent protective device
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit earth
Remote controller-Indoor unit
Outdoor unit L1-L2
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
The breaker shall be provided to ensure disconnection of all active phase conductor of the supply.
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 147 ft [45 m]
If AWG13 is used, maximum 164 ft [50 m].
If AWG13 is used and S3 is separated, maximum 262 ft [80 m].
*3. The 30 ft [10 m] wire is attached in the remote controller accessory. Maximum 1500 ft
*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.Use copper supply wires.
3.Use wires rated 600 V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4.Install an earth longer than other cables.
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 .
OCH577A
Simultaneous twin system
F
C
L1
A
B
L2
GR
S1
S1
S2
S2
S3
S3
1
2
PLA-A12, 18, 24, 30
PCA-A24, 30, PKA
–
1 A
15 A
A12
A18
Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz Single, 208/230 V, 60 Hz
*1
15 A
15A
13 A
13A
15 A
20A
2 o Min. AWG 14
2 o Min. AWG 14
1 o Min. AWG 14
1 o Min. AWG 14
*2
3 o AWG 16 (polar)
3 o AWG 16 (polar)
*2
1 o Min. AWG 16
1 o Min. AWG 16
*3
2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar)
*4
208/230 V AC
208/230 V AC
*4
208/230 V AC
208/230 V AC
*4
24 V DC
24 V DC
*4
12 V DC
12 V DC
230 V
Single phase
Isolator
S1
A-Control
S2
Outdoor Unit
S3
A Outdoor unit power supply
F
F
B Wiring circuit breaker or isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
D
E Remote controller
S1
S1
S2
S2
F Indoor unit
S3
S3
G Indoor unit earth
1
1
E
2
2
G
G
.
PLA-A36, 42
PEAD-A24, 30, 36, 42
PCA-A36, 42
–
2 A
2.63, 2.73, 3.30, 3.50 A
15 A
A24
A30
25A
30A
18A
25A
30A
40A
2 o Min. AWG 12
2 o Min. AWG 10
1 o Min. AWG 12
1 o Min. AWG 10
3 o AWG 16 (polar)
3 o AWG 16 (polar)
1 o Min. AWG 16
1 o Min. AWG 16
208/230 V AC
208/230 V AC
208/230 V AC
208/230 V AC
24 V DC
24 V DC
12 V DC
12 V DC
3 poles isolator
S1
S2
S3
20
PEA-A12, 18
–
–
1 A
15 A
15 A
A36
A42
30A
30A
25A
26A
40A
40A
2 o Min. AWG 10
2 o Min. AWG 10
1 o Min. AWG 10
1 o Min. AWG 10
3 o AWG 16 (polar)
3 o AWG 16 (polar)
1 o Min. AWG 16
1 o Min. AWG 16
208/230 V AC
208/230 V AC
208/230 V AC
208/230 V AC
24 V DC
24 V DC
12 V DC
12 V DC
A-Control
Indoor Unit
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