9
GB
4 - CONNECTIONS
4.1 - REFRIGERATION CONNECTIONS
Outdoor unit
Indoor unit
Gas line
Liquid line
R 410 A
• R 410 A is a high-pressure refrigerant (+ 50% in relation to
R 22 and R 407 C).
• The compressors approved for operation with this fluid are
filled beforehand with polyalcohol oil.
Contrary to mineral oil, it is very hygroscopic: it absorbs the
humidity of the ambient air very quickly. This can modify its
lubricant properties and lead in time to the destruction of the
compressor.
MAINTENANCE INSTRUCTIONS
1 - Never add oil to the appliance; the compressor is filled
with polyalcohol oil, a special oil which cannot tolerate the
presence of other oils.
2 - The instruments used for:
- filling,
- pressure measurements,
- emptying under vacuum,
- recovering the fluid,
must be compatible and only used for the R 410 A fluid.
Note: the pressure taps of the refrigerating circuit are
5/16 SAE (1/2 - 20 - UNF).
3 - In the case of a new charge:
- the charge must be undertaken in liquid phase,
- use a balance and a dip pipe type R 410 A cylinder,
- charge the weight of R 410 A as per the value indicated
on the unit’s identification plate (for “split systems”, refer
to the installation instructions as the charge must
consider the length of the connecting lines).
4 - In case of leakage, do not complete the charge: recover
the remaining refrigerant for recycling and perform a total
charge.
Recovery, recycling or the destruction of the fluid must be
done in compliance with the laws in force in the country
concerned.
5 - If the refrigerant circuit is opened, you must:
- avoid the entry of air into the circuit as much as
possible,
- replace or install a drier,
- perform the “vacuum operation” at a minimum level of
0.3 mbar (static).
6 - Do not release R 410 A fluid into the atmosphere. This
fluid is a fluorinated greenhouse gases, covered by the
Kyoto Protocol with a Global Warming Potential (GWP) =
1975 - (CE Directive 842 / 2006).
APPLIANCES FILLED WITH R 410 A
• For the connecting pipes, use the flare nuts provided with the unit or nuts intended for the R 410 A.
• Connect the units with the connecting tubes in accordance with the table below.
• For GR9FI65 - AEI1G65 connect the bypass, supplied with the outdoor unit.
Colonna1
