English
12
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 pip-
ing may not deflect.
(Refer to Fig. 29)
Make sure to use the attached drain hose (1) (for rightward
piping), the elbow (10) (for upward and backward 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 pip-
ing 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)
If the drain riser is installed inclined, the float switch may
malfunction and cause water leakage.
•
Make sure to use the drain hose (1), the elbow (10) and
the sealing material (Large) (8) attached to the indoor unit
as accessories.
1.
To prevent the elbow from getting damaged by the
metal clamp (2) for upward and backward piping,
wrap the vinyl tape around the elbow 2 to 3 times so
that the tape covers more than the width of metal
clamp (2) leaving 10 - 15 mm from the tip of the elbow
(10) without wrapping as shown in
Fig. 30
.
2.
Insert the drain hose (1) and the elbow (10) to the root
of the drain socket. Tighten the metal clamp (2) within
the taped range of hose inserted tip with the torque
1.35±0.15N·m (135±15N·cm).
(Refer to Fig. 25, 26, 27, and 31)
• Do not tighten the metal clamp (2) with the torque more
than the specified value.
The socket, the drain hose (1), the elbow (10) or the metal
clamp (2) may be damaged.
Fix the metal clamp (2) so that the tightened part may be
in the range shown by
Fig. 32
.
3.
Wrap the vinyl tape around the end of the metal clamp
(2) so that the sealing material (large) (8) to be used
at the next process may not be damaged with the
clamp end or bend the tip of the metal clamp (2)
inward as shown.
(Refer to Fig. 32)
Fig. 29
(Caution for upward drain piping)
VP20
VP20
600mm
Distance 1~1.5m
Ceiling slab
Support
Drain hose (1)
(for connection to VP20)
(accessory)
Drain piping
(field supply)
Riser
Elbow (10) (accessory)
Metal clamp (2) (accessory)
Drain piping
OK
Not acceptable
Elbow
Riser
Fig. 30
For upward piping : shorter side
For backward piping : longer side
10~15mm
Elbow (10) (accessory)
Vinyl tape
Wrap with the width (approx. 20mm) larger
than metal clamp (2).
Fig. 31
Taped part
Drain hose (1) (accessory)
Insert without leaving any clearance
Metal clamp (2) (accessory)
Fix the metal clamp (2) so that the screw
head faces downward.
Indoor unit (Drain socket)
01_EN_3P177351-7S.fm Page 12 Thursday, March 21, 2013 10:19 PM
