5
Outdoor Unit
Installation Manual
WARNING
• Do not use any refrigerant different from the one speci
fi
ed for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may
result in a failure or explosion of the product or an injury to your body.
• Installation work must be requested from the supplying retail dealership or professional vendors.
Self-installation may cause water leakage, electrical shock, or
fi
re as a result of improper
installation.
• Speci
fi
ed tools and pipe parts for model R32 are required, and installation work must be
done in accordance with the manual. HFC type refrigerant R32 has 1.6 times more pressure
than that of conventional refrigerant (R22). Use the speci
fi
ed pipe parts, and ensure correct
installation, otherwise damage and/or injury may be caused. At the same time, water leakage,
electrical shock, and
fi
re may occur.
• Be sure to install the unit in a place which can suf
fi
ciently bear its weight. If the load bearing of
the unit is not enough, or installation of the unit is improper, the unit may fall and result in injury.
• Electrical work must be performed by a quali
fi
ed electrical engineer in accordance with the
code governing such installation work, internal wiring regulations, and the manual. A dedicated
circuit and the rated voltage must be used. Insuf
fi
cient power supply or improper installation
may cause electrical shock or
fi
re.
• Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection, stranded wire,
and single-wire connections are not allowed. Improper connection or
fi
xing may cause a
fi
re.
• Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be
fi
rmly placed. Improper cover installation may cause increased heat,
fi
re, or electrical shock at
the terminal area.
• Be sure to use only approved accessories or the speci
fi
ed parts. Failure to do so may cause
the unit to fall, water leakage,
fi
re or electrical shock.
• After the installation work, ensure that there is no leakage of refrigerant gas. If the refrigerant
gas leaks out of the pipe into the room and is heated by
fi
re or something else from a fan heater,
stove or gas range, it causes generation of poisonous gas.
• Make sure the equipment is properly earthed. Do not connect the earth wire to a gas pipe, water
pipe, lightning conductor, or telephone earth wire. Improper earth work may be the cause of
electrical shock.
• Do not install the unit where
fl
ammable gas may leak. If there is any gas leakage or accumulation
around the unit, it can cause a
fi
re.
• Do not select a location for installation where there may be excessive water or humidity, such
as a bathroom. Deterioration of insulation may cause electrical shock or
fi
re.
• Installation work must be performed following the instructions in this installation manual. Improper
installation may cause water leakage, electrical shock or
fi
re. Check the following items before
operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it may cause
overpressure and result in compressor damage. At the same time, if there is a leak in the
connection part, it may cause air suction and overpressure, resulting in burst or injury.
• The installation of pipe work shall be kept to a minimum.
• The following must be certainly done during pump down.
• Do not incorporate air into the refrigeration cycle.
• Close the 2 service valves. Stop the compressor and remove the refrigerant pipe.
If the refrigerant pipe is removed when the compressor is operating and service valves are
opened, the refrigerant cycle will inhale unwanted matter such as air and the pressure in the
cycle becomes abnormally elevated. It may cause a burst or injury.
• Do not modify the power cable, connect the cable midway, or use a multiple outlet extension
cable. Doing so may cause contact failure, insulation failure, or excess current, resulting in
fi
re
or electrical shock.
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