28
A
1
Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger space of
3.28~4.92ft(1~1.5m).
2
Install U-trap at the end of the drainpipe to prevent a nasty smell to reach the indoor unit.
Without the drain pump
1
Install main air vent at the front of the farthest indoor unit from the main drain when installed
indoor units are more than 3.
2
You may need to install individual air vent to prevent water flow back at the top of each indoor unit
drainpipe.
With the drain pump
Drain pipe and drain hose installation
3.94inch(100mm)
or mor
e
Ceiling
Horizontal drainpipe
more than 1/100 slope
Main drainpipe
Hanger
Main air vent
Centralized horizontal drainpipe
(more than 1/100 slope)
21.65inch
(550mm) or less
3.28~4.92ft
(1~1.5m)
Individual
air vent
Centralized Drainage