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For Existing Ceilings
1. Use anchors when installing the indoor unit in an existing ceiling.
2. Ceiling height is shown on the side of the installation guide (template). Adjust the height of the unit accordingly. Adjust the clearance
before hanging the indoor unit.
3. Remove the temporary washer plate and position the indoor unit hanger brackets on the bolts. Secure with nuts and washers on the top
and bottom of the hanger brackets.
4. Ceiling-cassette indoor units are equipped with a built-in drain pump and float switch, therefore, the unit must be installed horizontally or
condensate will drip out and cause product malfunction. Measure the unit at each corner to verify that it is level.
5. Remove the installation guide (template).
Drilling the Piping Hole
Follow all piping clearance recommendations.
1. Using a 2-5/8 inch hole core drill bit, drill a hole following installation guidelines and application needs. Avoid obstructions in the wall such
as electrical wires or conduits and water or gas pipes.
• The slant of the hole must be 3/16 inches to 5/16 inches from level with the slant being
upward on the indoor unit side and downward on the outdoor unit side.
2. Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent
damage to the insulation and piping.
• Sleeve and bushing prevents piping / bundling damage.
• See Refrigerant Piping Connections for Indoor Unit for information on piping installation.
• See the Refrigerant Piping Connections section of this manual for information on indoor unit
piping connection installation.
• See the Electrical Connections section of this manual for information on conduit / electrical wiring to the indoor unit.
GENERAL INSTALLATION GUIDELINES
Hanging the Indoor Unit / Drilling the Piping Hole
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 21: Drilling the Piping Hole.
Wall
Indoor
Outdoor
Drill the piping access hole slightly tilted to the outdoor
side using a Ø2-3/4 inch (70mm) hole-core drill.
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