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Wiring of main power supply and equipment capacity
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when
proceeding with the wiring and connections.
- The cable size is the minimum value for metal conduit wiring. The power cord size should be 1
rank thicker taking into account the line voltage drops. Make sure the power-supply voltage
does not drop more than 10%.
- Specific wiring requirements should adhere to the wiring regulations of the region.
- Power supply cords of parts of appliances for outdoor use should not be lighter than polychloro-
prene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately
from the power supply.
Main power wire
1Unit
2Unit
3Unit
4Unit
Ground wire
1. The power wire Between the master outdoor unit and slave1 outdoor unit – minimum : 6 mm
2. The power wire Between the slave1 outdoor unit and slave2 outdoor unit – minimum : 4 mm
3. The power wire Between the slave2 outdoor unit and slave3 outdoor unit – minimum : 2.5 mm
h The above standard is CV wire standard.
h Please use the 3-phase 4-wire quadrupole Leakage circuit breaker of circuit breaker.
WARNING
!
• Follow ordinance of your governmental organization for technical standard related to elec-
trical equipment, wiring regulations and guidance of each electric power company.
• Make sure to use specified cables for connections so that no external force is imparted to
terminal connections. If connections are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection switch. Note that gener-
ated 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.
The thickness of Minimum wire(mm
Branch wire
2.5~6
10~16
25~35
70
ELECTRICAL WIRING
2
)
Ground wire
-
2.5
-
2.5
-
4
-
6
59
Leakage circuit
breaker(4P ELCB)
Below 30~50A
100mA 0.1sec
Below 75~100A
100mA 0.1sec
Below 125~150A
100mA 0.1sec
Below 175~200A
100mA 0.1sec
2
2
2
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