![background image](http://html1.mh-extra.com/html/daikin/fxaq20pv1/fxaq20pv1_installation-manual_2459660014.webp)
12
English
6. DRAIN PIPING WORK
(1) Install the drain piping. (Refer to Fig. 16)
•
The drain pipe should be short with a downward slope and should prevent air pockets from forming.
•
Watch out for the points in the Fig. 16 when performing drain work.
•
When extending the drain hose, use a commercially available drain extension hose, and be sure to
insulate the extended section of the drain hose which is indoors.
(Refer to Fig. 17)
•
Make sure the diameter of the piping is the same as the piping (hard vinyl chloride, nominal diameter
13mm) or bigger.
•
When directly connecting a hard vinyl chloride pipe joint (nominal diameter 13mm) to the drain hose
connected to the indoor unit (i.e. for embedded piping, etc.), use a commercially available hard vinyl
chloride pipe joint (nominal diameter 13mm).
(Refer to Fig. 18)
(2) Make sure the drain works properly.
•
After drain work is complete, perform a drain
check by opening the front panel,
removing
the air filter
, pouring water into the drain
pan, and making sure water flows smoothly
out of the drain hose.
(Refer to Fig. 19)
CAUTION
•
Drain piping connections
Do not connect the drain piping directly to sewage pipes that smell of ammonia. The ammonia in the
sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger.
•
Keep in mind that it will become the cause of getting drain pipe blocked if water collects on drain pipe.
Fig. 16
Make sure the drain
hose is at a downward
slope.
Make sure the tip does
not go underwater even
when water is added.
Drain hose
Drain hose
(Downward
slope)
Indoor unit drain hose
Extension drain piping
(commercially available)
Insulating tube
(commercially available)
Insulating tape (accessory) (4)
( See “4.INDOOR UNIT INSTALLATION” )
Fig. 17
Drain hose connected
to the indoor unit
Commercially available
hard vinyl chloride pipe
joint (nominal diameter 13mm)
Commercially available
hard vinyl chloride pipe
(nominal diameter 13mm)
Fig. 18
Plastic container
for pouring
Drain pan
Make sure not to splash the water.
Fig. 19
01_EN_3P156215-12U.fm Page 12 Thursday, August 27, 2009 4:09 PM