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8
English
Downward
inclination of
1/100 or more
3–5 ft. (1–1.5 m)
Support
Good
Wrong
Fig.14
CAUTION
If drainage stagnates in the drain piping, the piping may get
clogged.
• If sufcient downward inclination cannot be ensured,
carry out upward drain piping.
• Install supports at a distance of 3–5 ft. (1–1.5 m) so that
the piping may not deect. (RefertoFig.14)
• Make sure to use the attached drain hose (1) and the
metal clamp (2).
Insert the drain hose (1) into the drain socket up to the
point where the socket diameter becomes larger.
Put the metal clamp (2) to the taped hose end and tight-
en the metal clamp (2) with torque 1.0 lbf·ft. (1.35±0.15
N·m).
Metal clamp (2)
(accessory)
Drain socket
Tape
Hose end
Drain hose (1)
(accessory)
Fig. 15
CAUTION
• Do not tighten the metal clamp (2) with the torque more
than the specied value.
The drain hose (1), the socket or the metal clamp (2) may
be damaged.
• Wrap the vinyl tape around the end of the metal clamp
(2) so that the sealing material (Large) (10) 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. (RefertoFig.16)
<In case of sticking vinyl tape>
Tightened part
approx. 90°
Stick vinyl tape without
tearing the sealing
material (Large) (10) .
Vinyl tape
<In case of bending the tip>
Bend the tip without tearing the
sealing material (Large) (10).
Tightened part
approx. 90°
Fig.16
< Caution to be taken when carrying out upward
drainpiping(RefertoFig.17)>
•
The maximum height of the drain riser is 26-1/2 in.
(675mm) Since the drain pump mounted on this indoor
unit is a high head type, from the characteristic point of
view, the higher the drain riser the lower the draining noise.
Therefore, the drain riser of 11-3/4 in. (300 mm) or
higher is recommended.
• For upward drain piping, keep the horizontal piping dis-
tance of 11-3/4 in. (300 mm) or less between the drain
socket root to the drain riser.
Ceiling slab
≤ 11-3/4 (300)
3-5 ft. (1-1.5 m)
Support
[Unit: in. (mm)]
Metal clamp (2) (accessory)
Drain hose (1) (accessory)
Upward drain piping
Drain riser
Adjustable
(≤ 26-1/2 (675))
(≤ 33-1/2 (850))
Drain hose (1)
(accessory)
Level or upward
inclination
Keep the drain hose level or make a slight upward
inclination so that air may not stagnate in the drain hose.
If air stagnates, the drain may flow oppositely when the
drain pump stops and generate an abnormal sound.
Fig.17
01_EN_3P161684-9U.indd 8 8/8/2018 15:26:53
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