Airwell OU-PSINV-25HR, Installation Instructions Manual

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(5) Measure the thickness of the wall from the inside edge to
the outside edge and cut the PVC pipe at a slight angle 6
mm shorter than the thickness of the wall. (Fig. 3-17)
CAUTION
Avoid areas where electrical wiring or conduits are located.
PVC pipe (locally purchased)
Cut at slight angle
Fig. 3-17
(6) Place the plastic cover over the end of the pipe (for indoor
side only) and insert in the wall. (Fig. 3-18)
INSIDE OUTSIDE
Wall
Plastic
cover
PVC pipe
Sight
angle
Fig. 3-18
NOTE
The hole should be made at a slight downward gradient to the
outside.
3-8. Attaching the Rear Panel onto the Wall
Confirm that the wall is strong enough to support the unit.
See either Item a) or b) below depending on the wall type.
a) If the Wall is Wooden
(1) Attach the rear panel to the wall with the 10 screws
provided. (Fig. 3-19)
If you are not able to line up the holes in the rear panel
with the beam locations marked on the wall, use Rawl
plugs or toggle bolts to go through the holes on the panel
or drill 5 mm dia. holes in the panel over the stud locations
and then mount the rear panel.
Fig. 3-19
(2) Check with a tape measure or carpenter’s level. This is
important so that the unit is correctly installed. (Fig. 3-20)
Fig. 3-20
(3) Make sure the panel is flush against the wall. Any space
between the wall and unit will cause noise and vibration.
b) If the Wall is Brick, Concrete or Similar
Drill 4.8 mm dia. holes in the wall. Insert Rawl plugs for
appropriate mounting screws. (Fig. 3-21)
4.8 mm
dia. hole
Rawl plug
Fig. 3-21
3-9. Removing the Grille to Install the Indoor Unit
In principle, with this model wiring can be completed without
removing the grille.
However, if it is necessary to change the settings on the PCB,
follow the procedure below.
Removing the grille
(1) Lift up on both sides of the air-intake grille to open. (Fig.
3-22)
(2) Remove the filter. (Fig. 3-22)
Intake grille
Filter
Flap
Open the grille
Fig. 3-22
(3) Adjust the flap so that it is horizontal. (Fig. 3-23)
(4) Open the installation screw covers below the grille (3
locations). (Fig. 3-23)
(5) Remove the screws. (Fig. 3-23)
Installation screw
cover
Fig. 3-23
(6) Remove the grille. (Fig. 3-24)
Remove the grille
Fig. 3-24
Airwell̲PAC-i̲eng.indb 19 Airwell̲PAC-i̲eng.indb 19 2009/07/09 16:13:22 2009/07/09 16:13:22