LG LSN181HSV5 Installation Manual page 36

INSTALLATION
Figure 52: Incorrect Slope Angles for the Drain Hose.
Upward slope
to outdoor
Indoor
can cause indoor
Unit
leaks!
Water
Leak
Less than
2 inch Gap
Between Bottom
of Drain Hose and
Ground
Indoor
Unit
Tip of Drain
Hose Pointing
Water
Up
Leak
Horizontal Drain Hose
>6-1/2 feet
Drain Hose Insulation
1. The drain hose and extension must be properly insulated to
ensure condensation will not damage walls, floors, etc. Foamed
polyethylene or equivalent of at least 5/16 inches thick is re-
quired.
2. Overlap the insulation at the connection of the field-installed
piping and the indoor unit piping. Tape together so that no gaps
exist.
3. Secure insulation to the rear piping housing section with vinyl
tape.
4. Bundle the piping and drain hose with tape where they meet at
the back of the indoor unit frame. Position the drain hose at the
bottom of the bundle (positioning the drain hose at the top of
the bundle will cause the drain pan to overflow inside the indoor
unit).
Checking the Indoor Unit Drain Hose for Leaks
1. Pour a glass of water on the evaporator.
2. Verify that the water flows appropriately through and out of the drain hose without any leaks.
36
Accumulated
drain water
Indoor
Unit
Water
Kinks
Leak
Indoor
Unit
Water
Leak
Indoor
Unit
Water
Leak
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Air
Indoor
Unit
Water
Leak
Indoor
Tip of Drain Hose
Unit
In Container
Drain Hose and
Ground are Parallel
Indoor
Unit
Buried Pipe
Bundle Taped in
Downward
Direction
Figure 53: Checking for Leaks at the Indoor Unit. Example Only; Sys-
tems Will Vary.
F
MULTI
F
MULTI MAX
Tip of Drain Hose
In Water
Ditch
Drain Hose
Installed in
Upward Direction
Drain Hose Inserted
<2 inches
Less than 2 inch Gap
Water
Leak
No rainwater trap
Drain Hose Connection
Check
for Leaks
Drain Pan
Drain
Hose
Check for Leaks