Samsung AE022MNJDEH, Installation Manual

Page: 10 / 34

10
Installation Procedure
Ins
tallation Pr
oc
edur
e
English
2 Be sure to use an insulator thick enough to cover the
refrigerant tube to protect the condensate water on
the outside of the pipe falling onto the floor and to
improve the efficiency of the unit.
3 Cut off any excess foam insulation.
4 Make sure that there are no cracks or waves on the
bent area.
5 It would be necessary to double the insulation
thickness (10 mm or more) to prevent condensation
even on the insulator when if the installed area is
warm and humid.
6
Do not use joints or extensions for the pipes that
connect the indoor and outdoor unit. The only
permitted connections are those for which the units
are designed.
CAUTION
• Connect the indoor and outdoor units using pipes
with flared connections (not supplied). For the lines,
use insulated, unwelded, degreased and deoxidized
copper pipe (Cu DHP type to ISO 1337 or UNI
EN 12735-1), suitable for operating pressures of
at least 4200kPa and for a burst pressure of at
least 20700kPa. Copper pipe for hydro-sanitary
applications is completely unsuitable.
• For sizing and limits (height difference, line length,
max. bends, refrigerant charge, etc.) see the outdoor
unit installation manual.
• All refrigerant connection must be accessible, in order
to permit either unit maintenance or removing it
completely.
Step 6 Cutting or flaring the pipes
1 Make sure that you prepared the required tools.
(pipe cutter, reamer, flaring tool and pipe holder)
2 If you want to shorten the pipe, cut it using a pipe
cutter ensuring that the cut edge remains at 90° with
the side of the pipe. There are some examples of
correctly and incorrectly cut edges below.
Pipe cutter
Pipe
Oblique
90°
Rough Burr
3 To prevent a gas leak, remove all burrs at the cut
edge of the pipe using a reamer.
4 Carry out flaring work using flaring tool as shown
below.
<Flaring tool>
Clutch type
Die
Copper pipe Flare nut Copper pipe
York
Die
A
Wing nut type
(Unit: mm)
Outer
diameter
A
Flare tool for
R410A clutch
type
Conventional flare tool
Clutch type
Wing nut
type
6.35 0~0.5 1.0~1.5 1.5~2.0
9.52 0~0.5 1.0~1.5 1.5~2.0
12.70 0~0.5 1.0~1.5 1.5~2.0
15.88 0~0.5 1.0~1.5 1.5~2.0
5 Check if you flared the pipe correctly. There are some
examples of incorrectly flared pipes below.