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Installation Procedure
• Max. allowable bending angle
Indoor unit
NOTE
• If a concentrated drain pipe is installed, refer to the
figure below.
Full thread bolt hanger
Individual
air vent
Main drain pipe
• If 3 or more units are installed, install the main air vent
at the front of the farthest indoor unit from the main
drain pipe.
• To prevent water from flowing back to indoor units, install
an individual air vent at the top of each indoor unit.
– The air vents should be T or 7 shaped to prevent
dust or foreign substances from entering.
– You may not need to install air vent if the horizontal
drain pipe is in proper slope.
14
English
1000 to 1500 mm
Main air vent
(must be installed)
200 mm
or more
300 to
550 mm
Centralized horizontal drain pipe
(more than 1/100 slope)
Step 11 Performing the drainage test
1 Do a leak test at the connection part of the flexible
hose and the drain pipe:
a Connect a general hose to the connection part of
the flexible hose of the indoor unit, and pour in
some water.
Hose
Flexible hose
b After pouring some water, reassemble the rubber
cap on the connection part of a flexible hose of
the indoor unit and firmly tighten it with a band to
prevent leakage.
c Check the leak test at the part where the adhesive
for the flexible hose and the drain pipe is used.
CAUTION
• The leak test must be performed for at least 24 hours.
2 Check the condensed water drainage:
a Pour about 2 liters of water into the indoor unit
drain pan as shown in the picture.
b When the electric cable connection is completed
• Turn on the indoor unit and outdoor unit.
• Operate in the Cool mode.
Water leakage
check part
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