3.
Use insulated copper cooling pipes. Cut a length of
30 – 50 cm in addition to the distance between the
units.
4.
Remove burrs from the pipe ends. Turn the pipe ends
downwards to prevent residue entering the pipe.
5.
Thread the flange nuts (that were removed from the
outdoor unit) on to the pipes and bend up the ends
of the pipes.
NOTE
Only use tools intended for R410A
6.
A good upward bend must have the following
properties:
■
a smooth and even inner surface
■
a uniform and even outer edge
■
a conical upward bend of uniform length.
Lubricate the contact surfaces with compressor oil
before connecting the pipes.
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