Drain Hose - LG ART COOL LA090HSV4 Installation Manual

REFRIGERANT PIPING CONNECTIONS

Drain Hose

Indoor Unit Drain Hose Guidelines
Refer to the diagrams below and follow proper installation and the running of the drain hose along the pipe installation line to avoid leakage. After the
drain hose is set in place, always follow with evacuation and leakage testing of all piping to be sure all piping is properly sealed. Re-check and retest
as necessary.
Drain hose is routed from the indoor unit through the structure (wall)
to the outdoor. It should slope at an angle where it is higher at the
indoor unit and lower toward the outdoor area, thereby letting gravity
push any condensation down and out. See Figure 36 for proper
drainage slope. Avoid piping the drain hose as shown in Figure 37.
These methods are incorrect and can cause leakage at the indoor
unit site.
Figure 36: Correct Slope Angle for Drain Hose
Correct Drainage Slope
Downward slope
to outdoor
for proper drainage
Indoor
Unit
Outdoor Unit Drain Hose Guidelines
Depending on installation site, it may be necessary to install a drain
plug (factory supplied).
1. See Figure 28 for drain plug installation.
2. Connect a field-supplied hose to the drain connection (A). If the
hose is too long, position it carefully to prevent kinks.
Do not use a drain hose with the outdoor unit in cold climates, oth-
erwise the drain water may freeze and impair heating performance.
Table 15: Outdoor Unit Drain Connection
Legend
Label Component
A Drain Connection
B Drain Cap
C Drain Washer
28
Piping
Figure 38: Outdoor Unit Drain Connection Components.
LSU090HSV4, LSU120HSV4
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.
Figure 37: Correct Slope Angle for Drain Hose
Incorrect Drainage Setup
Indoor Unit
Water
leakage
Indoor Unit
Water
leakage
Indoor Unit
Water
leakage
Drain Hose
LSU180HSV4
A
B B
C
B
Upward slope
to outdoor
can cause indoor
leaks.
Accumulated
drain water
Air
Waving
Tip of drain hose
dipped in water
Ditch
Less than
2 Inch gap from ground
A
C
B