7
English Safety precautions
WARNING
This appliance is filled with R32
(mild flammable refrigerant).
If the refrigerant is leaked and
exposed to an external ignition
source, there is a risk of fire.
Indoor unit and outdoor unit
The appliance shall be installed,
and/or operated in a room with floor
area larger than Amin (m²) and
keep away from ignition sources,
such as heat/sparks/open flame
or hazardous areas such as gas
appliances, gas cooking, reticulated
gas supply systems or electric
cooking appliances, etc. (Refer to
Table A of Installation instructions
table for Amin (m²))
Be aware that refrigerant may
not contain an odour, highly
recommended to ensure suitable
flammable refrigerant gas detectors
are present, operating and able to
warn of a leak.
Keep any required ventilation
openings clear of obstruction.
Do not pierce or burn as the
appliance is pressurized. Do not
expose the appliance to heat, flame,
sparks, or other sources of ignition.
Else it may explode and cause injury
or death.
Precaution for using R32
refrigerant
The basic installation work procedures
are the same as conventional refrigerant
(R410A, R22) models.
Since the working pressure is
higher than that of refrigerant R22
models, some of the piping and
installation and service tools are
special. Especially, when replacing
a refrigerant R22 model with a
new refrigerant R32 model, always
replace the conventional piping and
flare nuts with the R32 and R410A
piping and flare nuts on the outdoor
unit side.
For R32 and R410A, the same flare
nut on the outdoor unit side and pipe
can be used.
The mixing of different refrigerants
within a system is prohibited. Models
that use refrigerant R32 and R410A
have a different charging port thread
diameter to prevent erroneous
charging with refrigerant R22 and for
safety.
Therefore, check beforehand. [The
charging port thread diameter for
R32 and R410A is 1/2 inch.]
Must always ensure that foreign
matter (oil, water, etc.) does not
enter the piping. Also, when storing
the piping, securely seal the opening
by pinching, taping, etc. (Handling of
R32 is similar to R410A.)
•
Operation, maintenance, repairing
and refrigerant recovery should be
carried out by trained and certified
personnel in the use of flammable
refrigerants and as recommended
by the manufacturer. Any personnel
conducting an operation, servicing
or maintenance on a system or
associated parts of the equipment
should be trained and certified.
ACXF55-17690_book1.indb 7ACXF55-17690_book1.indb 7 12/7/2017 5:07:02 PM12/7/2017 5:07:02 PM
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