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3. Installation
3.1
Preliminary warnings
i
The appliance must be installed exclusively by
the Technical Service or by professionally qual-
ified personnel who MUST wear adequate acci-
dent-prevention protective equipment.
The outdoor unit uses a HFC R-32 (GWP 675) type eco-friend-
ly liquid refrigerant, which does not deplete the ozone layer.
Make sure that all the materials used for maintenance and for
filling the components can be used with the R-32 refrigerant.
Refrigerant
(*)
Global warming potential
This unit is filled in the factory with the amount of refrigerant
shown on the data plate.
If the circuit must be filled after maintenance or repairs, see the
information appearing in this manual.
The appliance must be filled with the refrigerant specified,
namely R-32.
a
To prevent damages to the compressor, do not
fill the circuit with a quantity of refrigerant ex-
ceeding the amount specified by the manufac-
turer.
The canisters containing the R-32 refrigerant are equipped with
a dip tube which allows liquid to flow out only when placed in
a vertical position with the valve on top.
The R-32 refrigerant, as occurs with all HFC fluids, is compatible
only with oils recommended by the compressor manufacturer.
The vacuum pump might not be sufficient for fully eliminating
moisture from the oil.
POE-type oils rapidly absorb moisture. Do not expose the oil
to the air.
a
Never open the appliance when it is under a vacuum.
a
Do not disperse the R-32 refrigerant into the en-
vironment.
18 / EN
GWP (*)
R-32
675
– Ensure that all applicable national safety standards are
observed throughout the course of the installation.
– Ensure that the system is adequately earthed.
– Check that the power supply voltage and frequency
match those required by the outdoor unit, and that the
installed power is sufficient for its operation.
– Check that the power circuit impedance matches
the electrical power absorbed by the outdoor unit,
as shown on the rating plate of the outdoor unit (EN
61000-3-12).
– Check that adequately sized residual-current devices
and safety switches are connected to the outdoor and
indoor units.
a
Never use equipment other than that recom-
mended by the manufacturer to speed up de-
frosting or for cleaning purposes.
The appliances must be stored in a room without ignition
sources operating continuously (for example: open flames, a
running gas-fired device or a running electric heater).
During tests, never raise the appliance's pressure beyond the
level recommended by the manufacturer.
a
In the event of leakages, immediately ventilate
the area.
a
Do not perforate or give fire to the appliance.
Potential risks linked to leakages:
– Reduction of the oxygen in the installation zone
– If the R-32 refrigerant comes into contact with flames, it
can generate toxic gases.
Installation
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