Installation Manual
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25
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25-EN
10
ELECTRICAL CONNECTION
WARNING
• Use the speci
fi
ed wires for wiring connect the terminals. Securely
fi
x them to prevent
external forces applied to the terminals from affecting the terminals.
Incomplete connection or
fi
xation may cause a
fi
re or other trouble.
• Connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect earth wires to gas pipes, water pipes, lightning conductor or telephone earth wires.
• Appliance shall be installed in accordance with national wiring regulations.
Capacity shortage of power circuit or incomplete installation may cause an electric shock or a
fi
re.
CAUTION
• For power supply speci
fi
cations, follow the Installation Manual of outdoor unit.
• Do not connect 208/230V~60Hz power to the terminal blocks ( A , B ) for control wiring.
Otherwise, the system will fail.
• Do not damage or scratch the conductive core and inner insulator of power and system
interconnection wires while peeling them.
• Perform the electric wiring so that it does not come to contact with the high-temperature part of the
pipe.
The coating may melt resulting in an accident.
• Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.
System interconnection wires speci
fi
cations
System interconnection wires*
AWG16 or more
(H07RN-F or 60245 IEC 66)
Up to 229
′
7
″
(70 m)
*Number of wire × wire size
Remote controller wiring
Remote controller wiring, remote controller
inter-unit wiring
Wire size: 2 × AWG20 to AWG16
Total wire length of remote controller wiring
and remote controller inter-unit wiring
= L + L1 + L2 + … Ln
In case of wired type only
Up to 1640
′
5
″
(500 m)
2 remote controllers
Up to 984
′
3
″
(300 m)
2 remote controllers including a
wireless remote controller
Up to 1312
′
4
″
(400 m)
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 656
′
2
″
(200 m)
CAUTION
The remote controller wire and system interconnection wires cannot be parallel to contact each
other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the
control system due to noise or other factor.
Remote
controller
wiring
Indoor unit
Remote
controller
Indoor unit
Indoor unit
Indoor unit
Remote controller inter-unit wiring
(max. 8 units)
Ln
L2
L1
L
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