3
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 specifications in the installation manual and the stipulations in the local regulations
and laws.
Install the circuit breaker where it can be easily accessed for service.
When installing the circuit breaker outdoors, install one which is designed to used outdoors.
T
he power wire must not be extended. Connection trouble in the places where the wire is
extended
may result in smoking
and/or fire
.
Electrical wiring work shall be conducted according to law and regulation in the community and installation manual.
Failure to do so may result in electrocution or short circuit.
Test run
Before operating the air conditioner after having completed the work, check that the electrical cover box and service panel
of outdoor unit are closed, and set the circuit breaker to the ON position. There is probability electric shock if the power
is turned on without first conducting these checks.
If there is any kind of trouble (such as an error display appearing, smell of burning, abnormal sounds, 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 this status may cause mechanical problems to escalate or result in
electric shocks or other trouble.
After the work has finished, use an insulation tester set (500V Megger) to check the resistance is 1M ohm 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 occurs in the air conditioner.
After the installation work, follow the Owner’s manual to explain to the customer how to use and maintain the unit.
Relocation
Only qualified installer or qualified service person is allowed to relocate the air conditioner. It is dangerous for the air
conditioner to 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 issues.
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 of 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 take care so that water or dust does not
enter the system. Moreover, do not use the existing piping because there are problems with the pressure-resistance force
and impurity in it.
New Refrigerant Air Conditioner Installation
