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6.1 General information
!
DANGER
• Turn off the main power switch to the indoor unit and the outdoor unit before electrical wiring
work or a periodical check is performed.
• Check to ensure that the indoor fan and the outdoor fan have stopped before electrical wiring
work or a periodical check is performed.
• Protect the wires, drain pipe, electrical parts, etc. from rats or other small animals. If not
protected, rats may gnaw at unprotected parts and at the worst, a fire will occur.
!
CAUTION
• Install an ELB (Earth Leakage Breaker) in the power source line.
• Use twisted shielded pair cable or shield pair cable for transmission wires between the indoor
and the outdoor units, and connect the shielded part to the earth screw in the electrical box of
the indoor unit.
• Wrap the field supplied insulation around the wires, and plug the wiring connection hole with
the seal material to protect the product from any condensate water or insects.
• Tightly secure the wires with the cord clamp inside the indoor unit.
• Lead the wires through the knockout hole in the side cover when using conduit.
• Secure the cable of the remote control switch using the cord clamp inside the electrical box.
◆ General Check
1 Make sure that the field-selected electrical components (main power switches, circuit breakers,
wires, conduit connectors and wire terminals) have been properly selected. Make sure that the
components follow local codes and regulations.
2 Check to ensure that the power supply voltage is within
+/-10% of the rated voltage.
3 Check the capacity of the electrical wires. If the power source capacity is too low, the system
cannot be started due to the voltage drop.
4 Select the wire sizes according to the European Standard, EN60 335-1. Use the wires which are
not lighter than the ordinary tough rubber sheathed flexible cord (code designation 60245 IEC
57) or ordinary polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
5 Check to ensure that the ground wire is connected.
PMEN0649 rev.0 - 03/2023
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