11.4. Wiring of main power supply and equipment capacity
Schematic drawing of wiring (example)
Note:
1.The transmission booster may be required according to the number of indoor units connected. (For details, see item 11.3. “Wiring transmission cables”)
2.For switch capacity, see the installation manual for transmission booster.
A Power supply | E Power supply | |
B Switch |
| F 1.5 mm2 or more |
C Variable capacity unit | C’ Constant capacity unit | G Pull box |
D Ground |
| H Indoor unit |
Thickness of wire for main power supply and on/off capacities (example)
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| Minimum wire thickness (mm2) | Switch (A) |
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| Breaker for current leakage | |
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| Main cable | Branch |
| Ground | Capacity |
| Fuse |
| wiring (NFB) | ||
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unit | 10.0 | – |
| 10.0 | 63 |
| 63 |
| 75A | 75A 100mA 0.1 sec or less | ||
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16.0 | – |
| 16.0 | 63 |
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4.0 | – |
| 4.0 | 32 |
| 32 | 40 | 30A 100mA 0.1 sec or less | ||||
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| 6.0 | – |
| 6.0 | 40 |
| 40 | 40A 100mA 0.1 sec or less | ||||
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| Wire Thickness (mm2) |
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| Breaker for Current Leakage | |
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| Main Cable | Branch |
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| Ground | Capacity |
| Fuse |
| Wiring (NFB) | |
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Unit | All Models | 1.5 | 1.5 |
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| 1.5 | 16 |
| 16 |
| 20A | 20A 30mA 0.1 s. or less |
Indoor |
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1.Use a separate power supply for the outdoor unit and indoor unit.
2.Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
3.The wire size is the minimum value for metal conduit wiring.The power cord size should be 1 rank thicker consideration of voltage drops. Make sure the
4.Specific wiring requirements should adhere to the wiring regulations of the region.
5.Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57). For example, use wiring such as YZW.
Warning:
•Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause heating or fire.
•Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
•Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric shock.
•Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire.
•If the electrical wiring connections (L1, L2, L3, N ) are made incorrectly, damage to the unit could result.
ENGLISH
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