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Electric wiring
WARNING
The appliance shall be installed in accordance with national wiring regulations.
Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or
fi
re.
CAUTION
• Perform wiring of power supply complying with the rules and regulations of the local electric company.
• Do not connect 380V - 415V power to the terminal blocks for control cables (U1, U2, U3, U4, U5, U6, S);
otherwise, the unit may break down.
• Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the
coating of cables may melt and cause an accident.
• After connecting wires to the terminal block, take off the traps and
fi
x the wires with cord clamps.
• Follow the same structure for both the control wiring and refrigerate piping.
• Do not conduct power to indoor units until vacuuming of the refrigerant pipes has
fi
nished.
• Refer to the installation manuals of indoor unit and
fl
ow selector unit for power wiring and communication wiring
of indoor unit and
fl
ow selector unit.
Power supply speci
fi
cations
Do not bridge the power between outdoor units
through the equipped terminal blocks (L1, L2, L3, N)
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
Incorrect
Power supply for
outdoor units
Heat insulation for pipe
• Apply heat insulation of pipe separately at the liquid, gas, and balance sides.
• Be sure to use thermal insulator resistant up to 120°C or higher for pipes at the gas side.
Finishing after connecting pipes
• After piping connection work has been
fi
nished, cover the opening of the piping/wiring panel with the piping
cover, or
fi
ll silicon or putty into the space between the pipes.
• In case of drawing-out the pipes downward or sideward, also close the openings of the base plate and the side
plate.
• Under the opened condition, a problem may be caused due to the entering of water or dust.
When using the piping cover
When not using the piping cover
Piping/wiring panel
Drawing-out sideward
Drawing-out
frontward
Drawing-out
downward
Close the opening with the
pipe cover.
Piping/wiring panel
Drawing-out sideward
Fill silicon or putty into the
periphery of the pipes.
Drawing-out
downward
Drawing-out
frontward
¿
Pipe holding bracket
Attach pipe holding brackets following the table below.
Diameter of pipe (mm)
Interval
Ø15.9 - Ø19.1
2m
Ø22.2 - Ø41.3
3m
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2/26/2559 BE 11:48 AM
2/26/2559 BE 11:48 AM
