– 5 –
Installation
• When the indoor unit is to be suspended, the designated hanging
bolts (M10 or W3/8) and nuts (M10 or W3/8) must be used.
• Install the air conditioner securely in a location where the base
can sustain the weight adequately. If the strength is not enough,
the unit may fall down resulting in injury.
• Follow the instructions in the Installation Manual to install the air
conditioner. Failure to follow these instructions may cause the
product to fall down or topple over or give rise to noise, vibration,
water leakage or other trouble.
• Carry out the speci
fi
ed installation work to guard against the
possibility of high winds and earthquake. If the air conditioner is
not installed appropriately, a unit may topple over or fall down,
causing an accident.
• If refrigerant gas has leaked during the installation work, ventilate
the room immediately. If the leaked refrigerant gas comes in
contact with
fi
re, noxious gas may generate.
• Use forklift to carry in the air conditioner units and use winch or
hoist at installation of them.
Refrigerant piping
• Install the refrigerant pipe securely during the installation work
before operating the air conditioner. If the compressor is operated
with the valve open and without refrigerant pipe, the compressor
sucks air and the refrigeration cycles is over pressurized, which
may cause a injury.
• Tighten the
fl
are nut with a torque wrench in the speci
fi
ed
manner. Excessive tighten of the
fl
are nut may cause a crack in
the
fl
are nut after a long period, which may result in refrigerant
leakage.
• After the installation work, con
fi
rm that refrigerant gas does not
leak. If refrigerant gas leaks into the room and
fl
ows near a
fi
re
source, such as a cooking range, noxious gas may be generated.
• When the air conditioner has been installed or relocated,
follow the instructions in the Installation Manual and purge
the air completely so that no gases other than the refrigerant
will be mixed in the refrigerating cycle. Failure to purge the air
completely may cause the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.
• The charge hose must be connected in such a way that it is not
slack
Electrical wiring
• Only a quali
fi
ed installer (*1) or quali
fi
ed service person (*1) is
allowed to carry out the electrical work of the air conditioner.
Under no circumstances must this work be done by an
unquali
fi
ed individual since failure to carry out the work properly
may result in electric shocks and/or electrical leaks.
• To connect the electrical wires, repair the electrical parts or
undertake other electrical jobs, wear gloves to provide protection
for electricians, insulating shoes and clothing to provide
protection from electric shocks. Failure to wear this protective
gear may result in electric shocks.
• Use wiring that meets the speci
fi
cations in the Installation Manual
and the stipulations in the local regulations and laws. Use of
wiring which does not meet the speci
fi
cations may give rise to
electric shocks, electrical leakage, smoking and/or a
fi
re.
• Connect earth wire. (Grounding work) Incomplete grounding
causes an electric shock.
• Do not connect earth wires to gas pipes, water pipes, and
lightning conductor or telephone earth wires.
• After completing the repair or relocation work, check that the
earth wires are connected properly.
• Install a circuit breaker that meets the speci
fi
cations in the
installation manual and the stipulations in the local regulations
and laws.
9-EN
10-EN