25
1. PRECAUTIONS
THIS AIR CONDITIONER ADOPTS THE NEW HFC
REFRIGERANT(R32) WHICH DOES NOT
DESTROY THE OZONE LAYER.
INSTALLATION MANUAL
Ensure that all Local, National and International
regulations are satisfied.
Read these “PRECAUTIONS” carefully before
Installation.
The precautions described below include important
items regarding safety. Observe them without fail.
After the installation work, perform a trial operation to
check for any problems.
Follow the Operation Manual to explain how to use
and maintain the unit to the customer.
Turn off the main power supply breaker before
maintaining the unit.
Ask the customer to keep the Installation Manual and
the Operation Manual should together.
This unit must be connected to the main power supply by
means of a switch with a contact separation of at least 3
mm.
The installation breaker must be used for the power
supply line of this air conditioner.
The characteristics of R32 refrigerant are: it is a
hydrophilic, 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
different from those for the conventional refrigerant.
This means that exclusive tools are required for the new
refrigerant (R32):
For connecting pipes, use new and clean piping
designed for R32, and please take care so that water or
dust does not enter.
In addition, do not use the existing piping because there
are problems with pressure-resistance force and
impurities in it.
CAUTION
New Refrigerant Air Conditioner Installation
CAUTION
Do not connect the appliance to the main
power supply.
WARNING
If the supply cord is damaged, it must be
replaced by the manufacturer or its service
agent or a similarly qualified person in order to
avoid creating a hazard.
An all-pole disconnection switch which has a
contact separation of at least 3 mm in all poles
should be connected using fixed wiring.
The appliance shall be installed in accordance
with national wiring regulations.
The temperature of the refrigerant circuit will
be high. Please keep the interconnection cable
away from the copper tube.
An all-pole disconnection device which has at
least 3 mm of separation distance in all poles and
a residual current device (RCD) with the rating of
above 10 mA shall be incorporated in the fixed
wiring according to national requirements.
The power cord type designation is
H05RN-R/H07RN-F or above.
Ask an authorized dealer or qualified
installation professional to install or maintain
the air conditioner.
Inappropriate installation may result in water
leakage, electric shock or fire.
Turn off the main power supply breaker before
attempting any electrical work.
Make sure all power breakers are off. Failure to
do so may cause electric shock.
Connect the connecting cable correctly.
If the connecting cable is connected incorrectly,
electric parts may become damaged.
When moving the air conditioner for the
installation into another place, be very careful
not to enter any gaseous matter other than the
specified refrigerant into the refrigeration cycle.
If air or any other gas is mixed into the
refrigerant, the gas pressure in the
refrigeration cycle becomes abnormally high
and it may cause pipes to burst and injuries on
persons.
Do not modify this unit by removing any of the
safety guards or by by-passing any of the
safety interlock switches.
Exposure of the unit to water or other moisture
before installation may cause a short-circuiting
of electrical parts.
Do not store the unit in a wet basement or
expose it to rain or water.
After unpacking the unit, examine it carefully to
see if there is possible damage.
Do not install the unit in a place that might
increase the vibration of the unit.
To avoid personal injury (with sharp edges), be
careful when handling parts.
Perform installation work properly according to
the Installation manual.
Inappropriate installation may result in water
leakage, electric shock or fire.