Drain Piping Work - Daikin FHQ35CAVEB Installation Manual

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 direc-
tions: 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 chloride piping,
nominal diameter 20mm, outside diameter 26mm).
• Install the drain piping as short as possible with down-
ward inclination of 1/100 or more by avoiding air stagna-
tion. (Refer to Fig. 23 and Fig. 24)
(It may cause abnormal sound such as bubbling noise.)
Left rear side
Drain piping
Back side (sheet metal)
Detach parts
Fixing
screw for
protection net
9
Putty or insulation
(field supply)
Left side
Drain piping
Left side
Detach parts
Fig. 21
Protection net
Fig. 22
Good
Downward inclination of 1/100 or more
Fig. 23
Do not lift
Wrong
Fig. 24
CAUTION
If drain stagnates in the drain piping, the piping may be
clogged.
• Make sure to use the attached drain hose (1) and metal
clamp (2). Also, insert the drain hose (1) into the root of
the drain socket, and tighten the metal clamp (2) at the
root of the drain socket tightly.
(Refer to Fig. 25 and Fig. 26)
(Install the metal clamp (2) so that the tightening part is in
the range of about 45°as shown in the Fig. 26.)
(Do not bond the drain socket and drain hose. If so, main-
tenance and inspection for the heat exchanger and oth-
ers cannot be conducted.)
CAUTION
If an old drain hose or an elbow or a clamp is used, it may
cause water leakage.
• Bend the tip of the metal clamp (2) so that the sealing
material does not bulge. (Refer to Fig. 26)
• When performing insulation, wind the large sealing mate-
rial (Large) (8) attached starting from the base of the
metal clamp (2) and drain hose (1) in the direction of the
arrow. (Refer to Fig. 25 and Fig. 26)
Metal clamp (2)
(accessory)
Drain hose (1)
(accessory)
Fig. 25
Supports
1-1.5m
Make sure there is no slack
Make sure it is not in the water
Sealing material (Large) (8)
(accessory)
Do not make a gap to avoid
dew condensation.
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