7-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation.
Table 2 lists recommended wire lengths and diameters for power supply systems.
NOTE
Refer to the wiring system diagram (Fig. 6) for the meaning of (A) and (B) in Table 2.
Table 2
(A) + (B) | (A) Power Supply Wiring Length (m) |
| Fuse or | |
Area (mm2) | (B) Power Line Length (m) |
| ||
| Circuit Breaker | |||
|
|
|
| |
Model |
| 2 | 3.5 | Capacity |
C77 / 97 |
| 33 | 51 | 10A |
C127 |
| 27 | 41 | |
|
|
WARNING
Be sure to comply with local codes on running the wire from the indoor unit to the outdoor unit (size of wire and wiring method, etc.).
Each wire must be firmly connected.
No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part.
WARNING
To avoid the risk of electrical shock, each air conditioner unit must be grounded.
CAUTION
Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram. The indoor unit draws its power from the outdoor unit.
WIRING SYSTEM DIAGRAM
INDOOR | (B) | OUTDOOR |
UNIT | UNIT | |
Terminal |
| Terminal |
1 |
| 1 |
2 |
| 2 |
3 | Grounding line | 3 |
|
| |
| (A) |
|
| L | L |
| Power supply | N |
Grounding line
Fig. 6
34
