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2FAN_IM_DB04307201-04_EN.book Page 7 Tuesday, December 17, 2019 6:34 PM
error display has appeared, there is a smell of burning, abnormal
sounds are heard, the air conditioner fails to cool or heat or water is
leaking) has occurred in the air conditioner, do not touch the air
conditioner yourself but set the circuit breaker to the OFF position,
and contact a qualified service person. Take steps to ensure that
the power will not be turned on (by marking "out of service" near
the circuit breaker, for instance) until qualified service person
arrives. Continuing to use the air conditioner in the trouble status
may cause mechanical problems to escalate or result in electric
shocks or other failure.
• After the work has finished, be sure to use an insulation tester set
(500 V Megger) to check the resistance is 1 MÙ or more between
the charge section and the non-charge metal section (Earth
section). If the resistance value is low, a disaster such as a leak or
electric shock is caused at user's side.
• Upon completion of the installation work, check for refrigerant leaks
and check the insulation resistance and water drainage. Then conduct
a test run to check that the air conditioner is operating properly.
Explanations given to user
• Upon completion of the installation work, tell the user where the
circuit breaker is located. If the user does not know where the
circuit breaker is, he or she will not be able to turn it off in the event
that trouble has occurred in the air conditioner.
• If you have discovered that the fangard is damaged, do not
approach the outdoor unit but set the circuit breaker to the OFF
position, and contact a qualified service person to have the repairs
done. Do not set the circuit breaker to the ON position until the
repairs are completed.
• After the installation work, follow the Owner's Manual to explain to
the customer how to use and maintain the unit.
Relocation
• Only a qualified installer or qualified service person is allowed to
relocate the air conditioner. It is dangerous for the air conditioner to
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be relocated by an unqualified individual since a fire, electric
shocks, injury, water leakage, noise and / or vibration may result.
• When carrying out the pump-down work shut down the compressor
before disconnecting the refrigerant pipe. Disconnecting the
refrigerant pipe with the service valve left open and the compressor
still operating will cause air or other gas to be sucked in, raising the
pressure inside the refrigeration cycle to an abnormally high level,
and possibly resulting in rupture, injury or other trouble.
• Never recover the refrigerant into the outdoor unit. Be sure to use a
refrigerant recovery machine to recover the refrigerant when moving
or repairing. It is impossible to recover the refrigerant into the outdoor
unit. Refrigerant recovery into the outdoor unit may result in serious
accidents such as explosion of the unit, injury or other accidents.
CAUTION
New Refrigerant Air Conditioner Installation
• This air conditioner adopts the new HFC refrigerant (R410A)
which does not destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water,
oxidizing membrane or oil, and its pressure is approx. 1.6 times
higher than that of refrigerant R22. Accompanied with the new
refrigerant, refrigerating oil has also been changed. Therefore,
during installation work, be sure that water, dust, former refrigerant,
or refrigerating oil does not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes
of connecting sections of charging port of the main unit and installation
tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant
(R410A).
• For connecting pipes, use new and clean piping designed for
R410A, and please care so that water or dust does not enter.
Installation Manual
EN-14
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