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7 Adjust the unit to the appropriate position, taking into
account the installation area for the front panel.
• Place the pattern sheet on the indoor unit.
• Adjust the space between the ceiling and the
indoor unit by using a dimension gauge.
• Fix the indoor unit securely after adjusting the level
of the unit by using a leveller.
• Remove the pattern sheet, connect the other
cables. and install the front panel.
Indoor unit
17 mm
Gauge of dimensions
Step 2 Performing the gas leak test
To identify potential gas leaks on the indoor unit, inspect
the connection area of each refrigerant pipe using a leak
detector for R-410A.
Before recreating the vacuum and recirculating the
refrigerant gas, pressurize the whole system with
nitrogen (using a cylinder with a pressure reducer) at a
pressure above 0.2 MPa, less than 4 MPa (gauge) in order
to immediately detect leaks on the refrigerant fittings.
Made vacuum for 15 minutes and pressurizing system
with nitrogen.
Insulator
20 mm
Ceiling
Liquid side
Gas side
Step 3 Insulating the refrigerant pipes
Once you have checked that there are no leaks in the
system, you can insulate the piping and hose.
1 To avoid condensation problems, place Acrylonitrile
Butadien Rubber separately around each refrigerant pipe.
No gap
NBR
NOTE
• Always make the seam of pipes face upwards.
CAUTION
• The insulation has to be produced in full compliance
with European regulation EEC / EU 2037 / 2000
requiring the use of sheaths insulation without using
CFC and HCFC gases for health and the environment.
2 Wind insulating tape around the pipes and drain hose
avoiding compressing the insulation too much.
Indoor unit
CAUTION
• Be sure to wrap insulation tightly without any gaps.
3 Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4 The pipes and electrical cables connecting the indoor
unit with the outdoor unit must be fixed to the wall
with suitable ducts.
Insulation cover pipe
Insulation pipe
Be sure to overlap the insulation.
English
21
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