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Installation Procedure
English
Installation Procedure
CAUTION
Check that the indoor unit is level with the ceiling by
using the leveller.
• Install air ventilation to drain condensation smoothly.
Air ventilation
Ceiling
• If it is necessary to increase the height of the drain
pipe, install the drain pipe straight within 300 mm
from the drain hose port. If it is raised higher than
550 mm, there may be water leaks.
Band joint
Drain hose
Ceiling
20 mm or more
300 mm or less
550 mm or less
• Do not give the hose an upward gradient beyond the
connection port. This will cause water to flow backwards
when the unit is stopped, resulting in water leaks.
Under gradient
Ceiling
• Do not apply force to the piping on the unit side when
connecting the drain hose. The hose should not be
allowed to hang loose from its connection to the unit.
Fasten the hose to a wall, frame or other support as
close to the unit as possible.
Support pieces
1 to 1.5 m
1/100 or more
Ceiling
• Install horizontally.
Be horizontal
Indoor unit
Flexible hose
• Max. allowable axis gap.
Indoor unit
Max. 20 mm
• Max. allowable bending angle.
Indoor unit
Max. 30°
NOTE
• If a concentrated drain pipe is installed, refer to the
figure below.
Full thread bolt hanger
Main air vent
(must be installed)
Centralized horizontal drain pipe
(more than 1/100 slope)
Main drain pipe
200 mm
or more
300 to
550 mm
1000 to 1500 mm
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