3-7. Wire Size and Length
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Carefully observe these regulations when carrying out the installation.
NOTE
Refer to the wiring system diagram (Fig. 23) for the meaning of (A), (B), and (C) in Table 5.
Refer to your local codes or in the absence of local codes see the National Electric Code: ANSI/NFPA70.
Table 5
Model |
| (A) POWER SUPPLY WIRING | (B) POWER LINE | (C) CONTROL LINE | |
|
|
|
|
| |
| Wire Size | AWG12 (min.) or bigger (*1) for CH3082 | AWG14 or bigger | AWG14 or bigger | |
| AWG10 (min.) or bigger (*1) for CH3682 | ||||
|
|
|
| ||
CH3082 |
|
|
|
| |
Length | It depends on wire specification and | 180 ft. (max.) | 180 ft. (max.) | ||
CH3682 | supply voltage level (*2) | ||||
|
|
| |||
|
|
|
|
| |
| Fuse or Circuit | 35A for CH3082 | Disconnect switch | - | |
| Breaker Capacity | 45A for CH3682 | (15A) | ||
|
| ||||
|
|
|
|
|
(AWG: American Wire Gauge)
(*1) It depends on supply voltage level and wire specification. Consider temperature rating of wire, ambient temperature, and the number of wires inside the conduit.
(*2) Requirement of supply voltage level: AC187V to 253V (Measure voltage level at terminal plate inside the outdoor unit.)
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 electric shock, each air conditioner unit must be grounded.
●For the installation of a grounding device, please observe local electrical codes.
●Grounding is necessary, especially for units using inverter circuits, in order to release charged electricity and electrical noise caused by high tension. Otherwise, electrical shock may occur.
●Place a dedicated ground more than 7' (2 m) away from other grounds and do not have it shared with other elec- tric appliances.
CAUTION
WIRING SYSTEM DIAGRAM
INDOOR | *Disconnect |
| OUTDOOR |
| 60Hz |
|
| 230/208V | |||
UNIT | switch |
| UNIT |
| |
Terminal | Field supply | (B) | Terminal |
| |
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|
|
| ||
1 |
|
| 1 |
| |
|
|
| supply phase | ||
2 |
|
| 2 |
| |
|
|
| Power Single | ||
3 |
|
| 3 | (A) | |
| (C) |
|
| ||
|
|
|
| ||
|
| 4 |
| L1 | |
|
|
|
| ||
| Grounding line |
| 5 |
| L2 |
|
|
|
| ||
|
| (B) |
|
|
|
|
|
|
| Grounding | |
|
|
|
| line |
|
Fig. 23
*NOTE
Disconnect switch may be required by national or local codes.
CAUTION
Always comply with national and local code requirements.
●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.
●Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone, security system, or intercom any closer than 3'4" (1 m) from the power cable and wires between the indoor and outdoor units. Electrical noise may affect the operation.
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