15
Installation
2.4.4 Preparation for refrigerant piping
The refrigerant piping is located inside an insulating
sleeve fixed on the back of the unit. It is necessary to
prepare the pipes before passing them through the hole
in the wall. For detailed instructions on countersinking
pipes and the required tightening techniques and
torques, refer to section “6 Notions on refrigerant piping
connection” of the outdoor unit manual.
1 Depending on the position of the wall hole in relation
to the mounting plate, choose the side from which the
refrigerant piping will exit the unit.
2 If the wall hole is behind the unit, leave the pre-cut
panel in place. If the wall hole is on the side of the
indoor unit, remove the pre-cut plastic panel from the
side of the unit using a jig saw (see “Fig. 8”).
Fig. 8
3 Remove any burrs along the cut section using a half
round file.
Fig. 9
d
IT IS PROHIBITED
use pliers to remove the pre-cut panel as this
may damage the front grille.
4 Using scissors, cut the insulation sleeve so that
about 15 cm of the refrigerant piping is exposed. This
operation has a double utility:
– it facilitates connection of refrigerant piping
– it makes it easier to check for gas leaks and to
check for indentations
5 If the connection pipes are already embedded in the
wall, proceed directly to paragraph “2.4.5 Drainage
pipe”. If there are no pipes already prepared,
connect the refrigerant piping of the indoor unit to
the connection pipe between the indoor unit and the
outdoor unit. Refer to section “6 Notions on refrigerant
piping connection” of the outdoor unit manual for
detailed instructions.
6 Depending on the position of the wall hole in relation
to the mounting plate, determine the angle required
for the pipe.
7 Grab the refrigerant line at the base of the bend.
8 Slowly, applying uniform pressure, bend the pipe
towards the hole. Take care to not to dent or damage
the pipe.
m
CAUTION
Do not dent or damage the pipe when bending
it compared to the unit. Any recesses in the
pipe will adversely aect unit performance.
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