Drain pipe and Drain Hose Installation (Continued)
Drainpipe Connection
1
The drain pipe should be installed within 100mm from the flexible hose,
lift up from 100mm to 550mm and lift down 20mm or more.
2
Install horizontal drainpipe with a slope of 1/100 or more and fix it by hanger
space of 1~1.5m.
3
Install the air vent in the horizontal drainpipe to prevent water flow back to
the indoor unit.
You may not need to install it if there were proper slope in the
horizontal drainpipe.
Note
4
The flexible hose should not be installed upward position, it may cause
water flow back to the indoor unit.
5
Install U-trap at the end of the drainpipe to prevent a nasty smell to reach
the indoor unit.
Flexible hose
Air vent
300mm or less
Horizontal drainpipe
more than 1/100 slope
100~550mm
or more
1~1.5m
100mm
or more
Ceiling
Hanger
Centralized Drainage
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.
Hanger
Main drainpipe
Individual
air vent
Main air vent
Centralized horizontal drainpipe
(more than 1/100 slope)
550mm or less
1~1.5m
Max. allowable axis gap
Max. 20mm
Indoor
Unit
Install horizontally
Be horizontal
Indoor
Unit
Flexible hose
Max. allowable bending angle
Max. 30˚
Indoor
Unit
Handle with using adhesive not to block the
inside of flexible hose
Connect to
PVC drain
pipe
Connect to
indoor unit
Insulation
PVC
drain pipe
(Apply
adhesive on
the inside)
Insulation
Flexible hose
(Apply adhesive on
the outside)
Flexible hose Installation
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