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I
I
U
NSTALLING THE
NDOOR
NIT
Performing Leak Test & Insulation
❊ The designs and shape are subject to
change according to the model.
No gap
NBR(T13.0 or thicker)
Insulation
Indoor Unit
Be sure to overlap
the insulation
C C
C C
A A
A A
U U
U U
T T
T T
I I
I I
O O
O O
N N
N N
Must fit tightly against
body without any gap.
18
E-
Leak Test
LEAK TEST WITH NITROGEN
In order to detect basic refrigerant leaks,before recreating the vacuum
and recirculating the R410A, it 's responsible of installer to pressurize the
whole system with nitrogen (using a cylinder with pressure reducer)at a
pressure above 30 bar (gauge).
LEAK TEST WITH R410A
Before opening valves, discharge all the nitrogen into the system and
create vacuum. After opening valves check leaks using a leak detector for
refrigerant R410A.
C C
A A
U U
T T
I I
O O
N N
C C
A A
U U
T T
I I
O O
N N
Discharge all the nitrogen to create a vacuum and charge the system.
Insulation
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 T13.0 or thicker Acrylonitrile
Butadiene Rubber around each refrigerant pipe.
N N
o o
t t
e e
Always make the seam of pipes face upwards.
N N
o o
t t
e e
2
Wind insulating tape around the pipes and drain hose avoiding to compress
the insulation too much.
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.
C C
A A
U U
T T
I I
O O
N N
C C
A A
U U
T T
I I
O O
N N
All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
(before opening valves)
(after opening valves)
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