6. Electrical work
6.1. Indoor unit (Fig. 6-1)
1. Remove the electrical wiring service panel.
2. Remove the electrical box cover.
3. Wire the power cable and control cable separately through the respective wiring entries given in the diagram.
• Do not allow slackening of the terminal screws.
• Leave excess cable so that the electrical box cover can be suspended below the unit during servicing. (Approx. 50 to 100 mm, 2 to 4 inch)
Entry for control cable
Entry for power
Clamp
Electrical box cover
Service panel for electrical wiring
Temporary hook for electrical box cover
Indoor / Outdoor unit connecting terminals
Remote controller connector
Secure with the clamp
Earth terminal
Conduit
Fig. 6-1
6.1.1.Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.1 System
1:1 System
A B C
D
L
N
S1
S2
S3
F
E
G
S1
S2
S3
1
2
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit earth
FRemote controller
GIndoor unit
* Affi x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
A B C
D
L
N
S1
S2
S3
E 
F
G G
S1 S1
S2 S2
S3 S3
12
21
E
AOutdoor unit power supply
BEarth leakage breaker
CWiring circuit breaker or isolating switch
DOutdoor unit
EIndoor unit earth
FRemote controller
GIndoor unit
* Affi x label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Indoor unit model |
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Minimum circuit ampacity |
| 1A | 2A | |||
Maximum rating of overcurrent protective device |
| 15A | 15A | |||
| size | Indoor | *1 | 3 × AWG16 (polar) | 3 × AWG16 (polar) | |
Wiring |
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Wire No. × |
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Indoor unit earth |
| 1 × Min. AWG16 | 1 × Min. AWG16 | |||
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Remote | *2 | 2 × AWG22 | 2 × AWG22 | |||
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Circuit | rating | Indoor | *3 | AC 208/230 V | AC 208/230 V | |
Indoor | *3 | DC24 V | DC24 V | |||
Remote | *3 | DC12 V | DC12 V | |||
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*1. Max. 50 m, 165 ft
*2. The 10m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500ft
*3. The fi gures 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.
Notes: 1. Wiring size must comply with the applicable local and national code.
2.Use copper supply wires.
3.Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.
4.Install an earth longer than other cables.
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