LG LA090HYV3 Installation Manual page 21

Drilling the Access Hole in the Wall
A hole needs to be drilled into the wall to connect the power wiring / communication cable and refrigerant piping (and drain piping) from the
indoor unit to the outdoor unit. Follow all piping and wiring clearance requirements.
1. Confirm the location of the indoor unit, and where the piping hole will be placed. HYV3 Art Cool Premier indoor units have a choice of left
or right piping.
2. Measure the distance from the installation plate (see previous page Refer to the measure indicated on the installation plate.
3. Using a 2-9/16 inch (65 mm) hole core drill bit, drill a hole at either the right or left side of the wall mounting, pre-chosen following installa-
tion guidelines and application needs.
• The slant of the hole must be 3/16" to 5/16" from level with the slant being upward on the indoor unit side and downward on the outdoor
unit side.
4. Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent damage to the insulation and piping.
Preparing the Piping and Power Wiring / Communication
(Connection) Cable
After the length between the indoor unit and the outdoor unit has
been measured, cut the piping and the power wiring / communication
(connection) cable to the proper length:
• Cut the piping slightly longer than the measurement.
• Cut the power wiring / communication (connection) cable 4.9 ft (1.5
m) longer than that of the piping.
Removing the Indoor Unit Bottom
Panel
To access the indoor unit piping port connections, and to make the
indoor unit installation procedure easier, open the front panel, and
remove the bottom panel first.
1. Fully open the front panel.
2. The bottom panel has plastic clips that attach to the indoor unit at
several connection points. The number and position of the con-
nections vary depending on the model of indoor unit.
3. Hold the center of the bottom panel, and pull it towards to disen-
gage the pins, releasing them from the connection points.
4. Pull both sides of the bottom panel out to release the clips from
the connections, being careful not to damage the bottom panel or
scratch the main horizontal vane. Set aside the bottom panel to
re-install after all procedures are complete.
GENERAL INSTALLATION GUIDELINES
Due to our policy of continuous product innovation, some specifications may change without notification.
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Figure 19: Drilling Piping Hole.
Indoor
Core Drill
Bushing
Figure 16: Position of the Bot-
tom Panel Connection Points.
Figure 18: Releasing the Sides of the Bot-
tom Panel.
Indoor Unit Mounting
WALL
Outdoor
Sleeve
Figure 17: Releasing the Back
of the Bottom Panel.
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