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Only use tools and
components designed for
refrigeration applications.
NOTE
Flanging tool
7 Flanging the refrigerant pipe
8 Correct flange shape
Tighten with 1st Spanner
Counter with
2nd Spanner
9 Tightening fittings
Tightening
torque:
1
4
15-20 Nm
3
8
33-40 Nm
1
2
50-60 Nm
5
8
65-75 Nm
3
4
95-105 Nm
10.
During installation, observe
guidelines on the permitted
bending radius for the
refrigerant pipes and never
bend a line twice in the same
place. Brittleness and cracking
can result.
11.
Use the wall or floor brackets to
fasten the outdoor component
where structurally allowed
(refer to the installation
instructions for the brackets).
Additional notes for installation
When combining the outdoor
component with some indoor
units, the connection of the
refrigerant pipes may differ.
In that case, install the provided
reducer or expansion fittings to
the indoor unit.
If the basic length of the
connection pipe exceeds
5 m, add refrigerant when
commissioning the system
for the first time (see chapter
"Adding refrigerant").
12.
Ensure that structure-borne
sound is not transferred to
the building. Use vibration
dampers to reduce the effects
of structure-borne sound!
13.
Prepare the refrigerant pipes
for the outdoor component as
described above.
A vacuum of at least
20 mbar must be produced!
!
CAUTION
The time required to generate
the vacuum is dependent on the
volume of the pipework in the
indoor unit and the length of the
refrigerant pipes. However, the
process will always take at least
60 minutes.
Once any foreign gases and
humidity have been completely
extracted from the system, the
valves on the pressure gauge
station are closed and the valves
on the outdoor component are
opened as described in the chapter
"Commissioning".
Leak testing
Once all the connections have
been established, the pressure
gauge station is attached as
follows to the Schrader valve (if
fitted):
red = small valve
= injection pressure
blue = large valve
= suction pressure
Once connected, perform a leak
test using dry nitrogen.
The tightness test involves
spraying a leak detection spray
onto the connections. If bubbles
are visible, the connections have
not been made properly. Tighten
the connection or, if necessary,
prepare a new flange.
If the leak test is successful,
depressurise the refrigerant pipes
and start a vacuum pump with an
absolute final partial pressure of
min. 10 mbar to create a vacuum
in the pipes. Any moisture present
in the pipes will also be removed.
REMKO RXT...DC
20
20


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