Drain Piping Work - Daikin FAA71AUVEB Installation Manual

7. DRAIN PIPING WORK

(1) Install the drain piping. (Refer to Fig. 18)
Perform the drain piping work so that water drains properly.
• The drain piping should be short with a downward slope of 1/100 or more, and should prevent air pock-
ets from forming. The drain hose from the indoor units should also have a downward slope.
CAUTION
• The drain pipe may be clogged if water accumulates in the drain pipe.
• Watch out for the points in the Fig. 18 when performing drain work.
Make sure the drain
pipe is at a downward
slope.
• When extending the drain hose, use a commercially available drain extension hose, and be sure to
insulate the extended section of the drain hose. (Refer to Fig. 19)
Extension drain piping
(commercially available)
Insulating tube
(commercially available)
• Make sure the diameter of the extension piping is the same as the unit piping (hard vinyl chloride, nom-
inal 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. 20)
Drain hose connected
to the indoor unit
CAUTION
• Do not bend or twist the drain hose connected to the indoor unit to avoid applying an excessive force.
(Applying an excessive force to the drain hose can cause water leakage.)
• When installing the separately provided drain up kit, please refer to the installation manual provided with
the drain up kit.
(2) Make sure the drain works properly.
• After drain piping 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. 21)
English
Make sure the tip does
not go underwater even
when water is added.
Commercially available
hard vinyl chloride pipe
joint (nominal diameter 13mm)
Drain hose
(Downward
slope)
Fig. 18
Indoor unit drain hose
Insulating tape (accessory) (3)
( Refer to "5. INDOOR UNIT INSTALLATION" ) Fig. 19
Commercially available
hard vinyl chloride pipe
(nominal diameter 13mm)
Plastic container
for pouring
Make sure not to splash the water.
Fig. 21
Drain hose
Fig. 20
Drain pan
13