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4.  ELECTRICAL WIRING
4-1. General Precautions on Wiring
(1)  Before wiring, confirm the rated voltage of the unit as 
shown on its nameplate, then carry out the wiring closely 
following the wiring diagram.
WARNING
(2)  This equipment is strongly recommended to be 
installed with Earth Leakage Circuit Breaker (ELCB) 
or Residual Current Device (RCD). Otherwise, it may 
cause electrical shock and fire in case of equipment 
breakdown or insulation breakdown.
 Earth Leakage Circuit Breaker (ELCB) must be 
incorporated in the fixed wiring in accordance with the 
wiring regulations. The Earth Leakage Circuit Breaker 
(ELCB) must be an approved circuit capacity, having a 
contact separation in all poles.
(3)  To prevent possible hazards from insulation failure, the 
unit must be grounded.
(4)  Each wiring connection must be done in accordance with 
the wiring system diagram. Wrong wiring may cause the 
unit to misoperate or become damaged.
(5)  Do not allow wiring to touch the refrigerant tubing, 
compressor, or any moving parts of the fan.
(6)  Unauthorized changes in the internal wiring can be very 
dangerous. The manufacturer will accept no responsibility 
for any damage or misoperation that occurs as a result of 
such unauthorized changes. 
(7)  Regulations on wire diameters differ from locality to 
locality. For field wiring rules, please refer to your LOCAL 
ELECTRICAL CODES before beginning. You must 
ensure that installation complies with all relevant rules and 
regulations.
(8)  To prevent malfunction of the air conditioner caused by 
electrical noise, care must be taken when wiring as follows:
●  The remote control wiring and the inter-unit control 
wiring should be wired apart from the inter-unit power 
wiring.
●  Use shielded wires for inter-unit control wiring between 
units and ground the shield on both sides.
(9)  Use a waterproof conduit for outdoor unit wiring to avoid 
damaging the wire and to prevent accumulation of liquid 
inside the unit.
00_341136_2WAY_Eng.indb   30 2022/9/19   9:27:26