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REFRIGERANT PIPING CONNECTIONS
Indoor Unit Condensate Drain Hose
Indoor Unit Condensate Drain Hose Installation
Refer to the diagrams and follow proper installation and the position of the drain hose
along the refrigerant piping installation path to avoid leaks. After the drain hose is set
in place, always follow with leak / pressure testing and deep evacuation procedures of
the refrigerant piping to be sure all refrigerant piping is properly installed. Re-check and
retest as necessary.
Indoor units have a choice of drain hose connection locations: left side or right
side. The drain hose must be installed on one of the connection locations, and
depends on indoor unit location, refrigerant piping path, application, and code
requirements.
1. Remove the drain cap from the hole where the drain hose will be connected.
2. Block the unused drain hole with the drain cap. Verify that the cap is tightly
inserted.
3. There are two methods for attaching the drain hose to the indoor unit, depend-
ing on the indoor unit model, the drain hose, and application requirements:
• Type One: Firmly install the drain hose onto the indoor unit drain hose con-
nection.
• Type Two: Firmly install the drain hose onto the indoor unit drain hose connec-
tion, securing the hose with a screw where indicated.
4. Route the drain hose from the indoor unit, through the structure (wall), and to
the outside. It must 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.
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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 54: Indoor Unit Drain Hose Connection Locations.
Figure 55: Drain Hose Connection Methods.
Type One
Type Two
Figure 56: Correct Slope Angle for Drain Hose.
Indoor
Unit
Downward Slope
to Outside for
Proper Drainage
Drain
Hose
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