15
English
7. DRAIN PIPING WORK
(1) Carry out drain piping.
•
Carry out drain piping so that drainage can ensured.
•
Drain piping can be connected from the following directions: For right rear/right side, refer to
Fig. 18
of
‘‘
6. REFRIGERANT PIPING WORK
’’, and for left rear/left side, refer to
Fig. 21
.
•
When conducting left rear/left side drain piping, remove the protection net. Then, remove the drain
socket cap and insulation material applied to left side drain socket and apply them to the right side drain
socket. When doing this, insert the drain socket cap all the way in to prevent a water leakage.
After the drain hose (1) (accessory) installing, attach the protection net by reversing the steps taken to
remove it.
(Refer to Fig. 22)
•
Select the piping diameter equal to or larger than that of the drain hose (1) (accessory) (polyvinyl chlo-
ride piping, nominal diameter 20mm, outside diameter 26mm).
•
Install the drain piping as short as possible with downward inclination of 1/100 or more by avoiding air
stagnation.
(Refer to Fig. 23 and Fig. 24)
(It may cause abnormal sound such as bubbling noise.)
CAUTION
If drain stagnates in the drain piping, the piping may be clogged.
Back side (sheet metal)
Detach parts
Putty or insulation
(field supply)
Left side
Drain piping
Left side
Detach parts
Left rear side
Drain piping
Fig. 21
Good
Wrong
Supports
1-1.5m
Downward inclination
of 1/100 or more
Do not lift
Make sure there
is no slack
Make sure it is
not in the water
Fig. 23
Fig. 24
Protection net
Fixing
screw for
protection net
Fig. 22
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