20
9
WIRING SPECIFICATIONS
9-1. 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
Simultaneous twin system
Outdoor unit power supply
Wiring circuit breaker or isolating switch
Outdoor unit
Indoor unit/outdoor unit connecting cords
Remote controller
Indoor unit
Indoor unit earth
S1
S2
L1
L2
GR
1
2
S1
S2
S3
S3
S1
S2
L1
L2
GR
1
2
S1
S2
S3
1
2
S1
S2
S3
S3
Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.
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 po
wer is
energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type .
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units..
Indoor unit model
PLA-A12, 18, 24, 30
PCA-A24, 30, PKA
PLA-A36, 42
PCA-A36, 42
1A
15A
–
2A
15A
–
PEAD-A24, 30, 36, 42
2.63, 2.73, 3.30, 3.50A
15A
–
PEA-A12, 18
1A
15A
–
Indoor unit power supply
Minimum circuit ampacity
Maximum rating of overcurrent protective device
1.Wiring size must comply with the applicable local and national code.
2.Use copper supply wires.
3.Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.
4.Install an earth longer than other cables.
Notes:
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
*2
*1
Indoor unit earth
*2
Remote controller-Indoor unit
*3
Outdoor unit L1-L2
*4
Indoor unit-Outdoor unit S1-S2
*4
Indoor unit-Outdoor unit S2-S3
*4
Remote controller-Indoor unit
*4
A12
A18
A24
A30
A36
A42
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
15A
15A
25A
30A
30A
30A
13A
13A
18A
25A
25A
26A
15A
20A
30A
40A
40A
40A
2
%
Min. AWG 14
2
%
Min. AWG 14
2
%
Min. AWG 12
2
%
Min. AWG 10
2
%
Min. AWG 10
2
%
Min. AWG 10
1
%
Min. AWG 14
1
%
Min. AWG 14
1
%
Min. AWG 12
1
%
Min. AWG 10
1
%
Min. AWG 10
1
%
Min. AWG 10
3
%
AWG 16 (polar)
3
%
AWG 16 (polar)
3
%
AWG 16 (polar)
3
%
AWG 16 (polar)
3
%
AWG 16 (polar)
3
%
AWG 16 (polar)
1
%
Min. AWG 16
1
%
Min. AWG 16
1
%
Min. AWG 16
1
%
Min. AWG 16
1
%
Min. AWG 16
1
%
Min. AWG 16
2
%
AWG 22 (Non-polar) 2
%
AWG 22 (Non-polar) 2
%
AWG 22 (Non-polar) 2
%
AWG 22 (Non-polar) 2
%
AWG 22 (Non-polar) 2
%
AWG 22 (Non-polar)
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
AC 208/230 V
DC 24 V
DC 24 V
DC 24 V
DC 24 V
DC 24 V
DC 24 V
DC 12 V
DC 12 V
DC 12 V
DC 12 V
DC 12 V
DC 12 V
Wir
ing
Wire No
.
%
siz
e
Circuit
rating
S1
S2
S3
S1
S2
S3
A-Control
Outdoor Unit
3 poles isolator
230V
Single phase
Isolator
A-Control
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 harmanics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect opeation of inverter.
*2. Max. 45 m, 147 ft
If AWG13 used, Max. 50 m, 164 ft.
If AWG13 used and S3 separated, Max. 80m, 262ft.
*3. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 1500 ft
*4. The figures are NOT always 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.
OCH481C
