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PRECAUTIONS FOR SAFETY
The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
General
Before starting to install the air conditioner, read through the Installation Manual carefully, and follow its instructions to
install the air conditioner.
Only qualified installer or service person is allowed to do installation work. Inappropriate installation may result in water
leakage, electric shock or fire.
Do not use any refrigerant different from the one specified for complement or replacement. Otherwise abnormally high
pressure may be generated in the refrigerant cycle, which may result in a failure or explosion of the product or an injury
to your body.
Before opening the electrical control box or service panel of outdoor unit, set the circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts.
Only a qualified installer or qualified service person is allowed to remove the electrical control box cover or service panel
of the outdoor unit and do the work required.
Before carrying out the installation, maintenance, repair or removal work, set the circuit breaker to the OFF position.
Otherwise, electrical shocks may result.
Place a “Work in Progress” sign near the circuit breaker while the installation, maintenance, repair or removal work is
being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
Wear protective gloves and safety work clothing during installation, servicing and removal.
The refrigerant used by this air conditioner is the R410A.
Selection of installation location
When the air conditioner is installed in a small room, provide appropriate measures to ensure that the concentration of
refrigerant leakage occur in the room does not exceed the critical level.
Do not install in a location where flammable gas leaks are possible. If the gas leak and accumulate around the unit, it may
ignite and cause a fire.
Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner. Otherwise, it
may cause imperfect combustion.
Installation
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 and result in injury.
Carry out the specified 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 fire, noxious gas may be generated.
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.
After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into the room and flows near
a fire source, such as a cooking range, noxious gas may be generated.
When the air conditioner has been installed or relocated, follow the instruction in the Installation manual and purge the air
completely so that no gases other than the refrigerant will be mixed in the refrigeration 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 qualified installer or qualified service person is allowed to carry out the electrical work of the air conditioner. Under
no circumstances must this work be done by an unqualified 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.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and laws.
Using wiring which does not meeting the specifications may lead electric shocks, electrical leakage, smoking and/or a
fire.
Connect earth wire. (Grounding work)
