12
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 power-supply voltage does not drop more than 10%.
4. Speci
fi
c 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
fl
exible cord (design 60245 IEC57). For example,
use wiring such as YZW.
6. Install an earth longer than other cables.
Warning:
• Be sure to use speci
fi
ed wires to connect so that no external force is imparted to terminal connections. If connections are not
fi
xed
fi
rmly, it may cause heat-
ing or
fi
re.
• 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
fi
re.
IMPORTANT
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a
fi
re or communication failure.
Indoor unit
V1
V2
Type 1
PLFY-VBM, PMFY-VBM, PEFY-VMS,
PCFY-VKM, PKFY-VHM, PKFY-VKM
18.6
2.4
Type 2
PEFY-VMA
38
1.6
Type 3
PEFY-VMHS
13.8
4.8
Others
Other indoor unit
0
0
C : Multiple of tripping current at tripping time 0.01s
Please pick up "C" from the tripping characteristic of the breaker.
<Example of "F2" calculation>
*Condition PEFY-VMS × 4 + PEFY-VMA × 1, C = 8 (refer to right sample chart)
F2 = 18.6 × 4/8 + 38 × 1/8
= 14.05
→
16A breaker (Tripping current = 8 × 16A at 0.01s)
*3 Current sensitivity is calculated using the following formula.
G1 = V2 × (Quantity of Type1) + V2 × (Quantity of Type2) + V2 × (Quantity of Type3) + V2 × (Quantity of Others)
+ V3 × (Wire length[km])
G1
Current sensitivity
30 or less
30 mA 0.1sec or less
100 or less
100 mA 0.1sec or less
Wire thickness
V3
1.5 mm²
48
2.5 mm²
56
4.0 mm²
66
6000
600
60
10
1
0.1
0.01
1
2
3
4
6 8
C
10
20
Sample chart
Rated Tripping current (x)
T
ripping T
ime
[s]
SAMPLE
6. Electrical work
