6. Electrical work
A | G | F | 6.1. Indoor unit (Fig. | ||
B | 1. | Remove the two electrical wiring service panels. | |||
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| C | L2 GR | 2. | Wire the power cable and control cable separately through the respective wiring | |
| S1 S2 S3 L1 |
| entries given in the diagram. | ||
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| • | Do not allow slackening of the terminal screws. | |
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| • Leave excess cable so that the electrical box can be suspended below the unit | ||
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| during servicing. (Approx. 50 to 100 mm, 2 to 4 inch) | |
E
D | 1 | 2 |
| H |
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J,K |
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| I |
AEntry for control cable B Entry for power
C Clamp
D Service panel for indoor controller switch setting E Service panel for electrical wiring
F Power supply terminals (separate indoor/outdoor unit power supplies,
G Indoor / Outdoor unit connecting terminals H Remote controller connector
ISecure with the clamp
JIntake sensor
KHolder
Fig.
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.
1:1 System
CF
L1 |
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A B L2 | D |
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GR |
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S1 |
| S1 |
S2 |
| S2 |
S3 |
| S3 |
| G E | 21 |
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
DIndoor unit/outdoor unit connecting cords
ERemote controller
FIndoor unit
GIndoor unit earth
*Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Simultaneous twin system
A
B
C
L1
L2
GR
S1
S2
S3
F
D
S1
S2
S3
GE 
12
F
S1
S2
S3
1
2G
AOutdoor unit power supply
BWiring circuit breaker or isolating switch
COutdoor unit
DIndoor unit/outdoor unit connecting cords
ERemote controller
FIndoor unit
GIndoor unit earth
* Affix a 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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Indoor unit power supply |
| – | – | ||
Minimum circuit ampacity |
| 1A | 2A | ||
Maximum rating of overcurrent protective device |
| 15A | 15A | ||
| WireNo.⋅size | Indoor unit power supply |
| – | – |
Wiring | Indoor unit power supply earth |
| – | – | |
Indoor | *1 | 3 ⋅ AWG16 (polar) | 3 ⋅ AWG16 (polar) | ||
Indoor unit earth |
| 1 ⋅ Min. AWG16 | 1 ⋅ Min. AWG16 | ||
| Remote | *2 | 2 ⋅ AWG22 | 2 ⋅ AWG22 | |
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Circuit | rating | Indoor unit | *3 | – | – |
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 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft
*3. 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 insulataed 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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