11
11
Indoor Unit Installation
7.
Drain piping
1) Connect the drain hose, as described right.
The drain hose should
be inclined downward.
No trap is permitted.
Do not put the end of
the hose in water.
2)
Remove the air fi lters and pour some water into the drain
pan to check the water fl ows smoothly.
3)
If drain hose extension or embedded drain piping is required,
use appropriate parts that match the hose front end.
ɸ
16
ɸ
18
Figure of hose front end
4)
When drain hose requires extension, obtain an extension
hose with an inner diameter of 16mm.
Be sure to thermally insulate the indoor section of the
extension hose.
ɸ
16
Drain hose supplied
with the indoor unit
Indoor unit
drain hose
Extension
drain hose
Heat insulation tube (fi eld supply)
5) When connecting a rigid polyvinyl chloride pipe (nominal
diameter 13mm) directly to the drain hose attached to
the indoor unit as with embedded piping work, use any
commercially available drain socket (nominal diameter
13mm) as a joint.
ɸ
18
Commercially available
drain socket (nominal
diameter 13mm)
Commercially
available rigid polyvinyl
chloride pipe (nominal
diameter 13mm)
Drain hose
supplied with the
indoor unit
8.
Improving installation strength
•
We recommend screwing the indoor unit onto
a
A
mounting plate in order to improve the
installation strength.
1) Remove the pipe cover of the front grille
(bottom). (4 tabs)
2) Secure the indoor unit with the
C
indoor unit
fi xing screws.
3) Attach the pipe cover.
Screw positions
4 tabs
Pipe cover
Lift up the lower side of the indoor unit and remove the pipe cover.
Insert a packing material or
the like behind the indoor
unit to keep it lifted.
Indoor unit
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