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Installation
Indoor Units
Unit:inch(mm)
Full thread bolt hanger
Individual
Main drain pipe
• If 3 or more units are installed, install a main air vent
in 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 an air vent if the
horizontal drain pipe has a proper slope.
3.28 to 4.92 ft (1 to 1.5m)
Main air vent
(must be installed)
air vent
11.81 inch (300 mm)
to 21.65 inch (550mm)
Centralized horizontal drain pipe
(more than 1/100 slope)
Connecting the power and
communication cables
7.87 inch (200
Bushing bracket installation
mm)or more
When connecting the power supply wire conduit,
the supplied bracket must be installed as shown in
the picture below.
4 way Cassette (600x600)
1
3
5
2
4
Click
push
1 conduit tube
2 conduit tubes
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