Daikin FUQ71CVEB Installation Manual page 20

• Install piping as short as possible with downward inclination of 1/100 or more and without where air may
stagnate. (Refer to Fig. 28)
(It may cause abnormal sound such as bubbling noise.)
If drain stagnates in the drain piping, the piping may be clogged.
• Install supports at a distance of 1 to 1.5m so that the piping may not deflect. (Refer to Fig. 29)
Drain piping
(field supply)
VP20
OK
Make sure to use the attached drain hose (1) (for rightward piping), the elbow (10) (for upward and back-
ward piping) and metal clamp (2).
If an old drain hose or an elbow or a clamp is used, it may cause water leakage.
• Insulate the piping that goes through indoors.
CAUTION
• To avoid the attached drain hose (1) getting excessive force, do not bend nor twist it.
(It may cause water leakage.)
• Do not connect the drain piping directly to the sewage that gives off ammonia odor.
The ammonia in the sewage may go through the drain piping and corrode the heat exchanger of the
indoor unit.
< Caution to be taken when carrying out upward drain piping >
• The maximum height of the drain riser is 600mm.
• Install the drain riser vertically. (Refer to Fig. 29)
19
Fig. 28
Drain hose (1)
(for connection to VP20)
(accessory)
Riser
Elbow (10) (accessory)
Metal clamp (2)
(accessory)
Fig. 29
(Caution for upward drain piping)
Downward inclination of 1/100 or more
OK
Not acceptable
Distance 1~1.5m
VP20
Ceiling slab
Support
Drain piping
Riser
Elbow (10)
(accessory)
Not acceptable
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