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2 - SAFETY ADVISE
Do not modify or bypass any of the safety guards or
switched in the system.
Caution: Before intervening in the unit,
verify that the main power supply to
the unit is cut off . An electric shock can
cause personal damage. The main door
switch is located in the electrical cabinet
of the outdoor module.
Risk of falling: No unit part walkwaymust be used as
a walkway, rack or support. Use a platform, or staging
to work at higher levels.
When working at heights, it is mandatory to use all
the necessary personal protective equipment (PPE)
to ensure safety. Pay special attention to the indoor
modules fi xed to the ceiling.
Periodically check and repair or if necessary replace
any component or piping that shows signs of damage.
The refrigerant lines can break under the weight and
release refrigerant, causing personal injury.
The compressor and line surfaces can reach
temperatures above 100ºC causing burns to the body.
In the same fashion, under certain conditions, these
surfaces can reach very cold temperatures that can
cause freezing risks.
No combustible matter should be placed within 6.5
meters of the unit.
Risk of explosion: Never exceed the specifi ed maximum
operating pressures.
Verify the allowable maximum high-side and low-
side test pressures by checking the instructions in
this manual and the pressures given on the unit's
nameplate.
Important: These units are prepared to withstand a maximum
available pressure of 800 Pa. If there is a higher pressure,
deformation, breakage, etc., may occur.
In the case of an installation fi re test, the unit can be deformed
and/or broken. It is necessary to foresee this test and to take
appropriate measures.
2.2 Safety standards for refrigerant
Important: These units contain a fl uorinated greenhouse gas
covered by the Kyoto protocol.
All interventions on the refrigerating circuit must be performed
in accordance with applicable legislation.
Within the European Union, it is necessary to observe regulation
(EU) No.517/2014, known as F-Gas, over Certain greenhouse
eff ect fl uoride gases.
The operator is bound by the obligation to perform periodical
sealing tests on the refrigerating circuit according to the
regulation (EU) No.517/2014. Please, consult the frequency of
tests in chapter of "Maintenance".
4
Type of refrigerant
Global warming potential (GWP)
Flammability class
Ensure that refrigerant is never released to the atmosphere
when the equipment is installed, maintained or sent for disposal.
It is prohibited to deliberately release refrigerant into the
atmosphere. The operator must ensure that any refrigerant
recovered is recycled, regenerated or destroyed.
Always remember that refrigeration systems contain pressurised
liquids and vapours. All necessary provisions must be made
when the system is partially opened: ensure the part of the
circuit concerned is not pressurized.
Ensure good ventilation, as an accumulation of refrigerant in an
enclosed space can displace oxygen and cause asphyxiation
or explosions.
Inhalation of high concentrations of vapour is harmful and may
cause heart irregularities, unconsciousness, or death. Vapour
is heavier than air and reduces the amount of oxygen available
for breathing. These products cause eye and skin irritation.
Decomposition products are hazardous.
Avoid contact with liquid refrigerant. Wash any spills from the
skin with soap and water. If liquid refrigerant enters the eyes,
immediately and abundantly fl ush the eyes with water and
consult a doctor.
The accidental releases of the refrigerant, due to small leaks
or signifi cant discharges following the rupture of a pipe or an
unexpected release from a relief valve, can cause frostbites
and burns to personnel exposed. Do not ignore such injuries.
Installers, owners and especially service engineers for these
units must:
● Seek medical attention before treating such injuries.
● Have access to a fi rst-aid kit, especially for treating eye
injuries.
R-410A refrigerant
According to EN 378-1, R-410A belongs to the A1 group, i.e.
with high safety both in the mix and also in the case of a leak.
Although it is not flammable, keep them away from open
fl ames (e.g. cigarettes) as temperatures of over 300°C cause
their vapours to break down and form phosgene, hydrogen
fl uoride, hydrogen chloride and other toxic compounds. These
compounds may produce severe physiological consequences
if accidentally inhaled or swallowed.
In case of a leak:
● To detect leaks, an electronic leak detector, an ultraviolet lamp
or soapy water must be used. Flame detectors do not help.
● If a leak occurs or if the refrigerant becomes contaminated
(e.g. by a short circuit in a motor) remove the complete charge
using an specifi c recovery unit for R-410A.
● The refrigerant must be stored in mobile certifi ed containers.
● Repair the leak detected and recharge the circuit with the total
refrigerant charge, as indicated on the unit's nameplate. Only
charge liquid refrigerant at the liquid line.
R-410A
2.088
A1
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