LG MULTI V ARNU073TUD4 Installation Manual page 34

INSTALLATION
Hanging the Cassette Indoor Units, continued.
1. Drill holes for the four (4) suspension / hanger bolts.
2. Securely install the four field-provided threaded rod hangers.
3. Refer to he figure below and hang the cassette frame from the four field-supplied hangers.
4. Use a level to ensure the frame is level. All ceiling cassettes use a condensation drain pump, and the frame must be level.
5. If local code requires an auxiliary drain pan under the unit, install a field-provided auxiliary drain pan.
The following parts are field supplied:
• Hanging bolt - W-3/8" or M10
• Nut - W-3/8" or M10
• Spring washer - M10
Figure 16: Installing the Hanging Bolt in the Ceiling.
Old Building
Anchor
Plate Washer
Spring Washer
Nut
Suspension Bolts
•
•
For New Ceilings
1. Use a sunken insert, a sunken anchor, or any other field-supplied part to reinforce the
ceiling so that it can bear the weight of the indoor unit. Use a temporary washer plate
to more easily set up the unit suspension location.
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. Refer to the installation guide (template) for the dimensions to the ceiling opening.
Match the center of the indoor unit (labeled) to the center indicated on the installation
guide.
4. Align the installation guide (template) with the label attached to the unit (affixing the
template to the unit if desired) to properly place the unit.
5. 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.
6. Ceiling-cassette indoor units are equipped with a built-in drain pump, 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.
7. Remove the installation guide (template).
34
Figure 17: Installation Diagram.
New Building
Keep the length of the bolt from the
bracket to 1-1/2 inches (1-9/16 inches
One-Way only)
Due to our policy of continuous product innovation, some specifications may change without notification.
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The following parts are included with the indoor unit:
• Flat washer - M10
Ceiling
Air Conditioner Frame
Ceiling board
Leave about 19/32 inches (TM/TN/TP),
1-7/32~1-11/32 inches (TQ/TR), 25/32
±1/8 (TT/TU), or 13/16 ±1/8 (TS)
between the bottom surface of the indoor
unit and the ceiling surface.
Bottom align
Paper pattern
for installation
Open the ceiling board
along the outer edge of the
paper pattern
Figure 18: Hanging the Indoor Unit.
Hanging Bolt
(W3/8 or M10)
(W3/8 or M10)
Spring Washer
(M10)
One-Way TT/TU Frames: 2-3/4 inches
Two-Way TS Frames: 3-9/16 inches
Four-Way TQ/TR Frames: 4-1/8 inches
Four-Way TM/TN/TP Frames: 4-1/4 inches
Ceiling board
Set screw of
paper pattern (4 pieces)
Flat Washer for M10
Nut
(Accessory; Install
insulation so that it is
in contact with the IDU
Hanger)
Flat Washer for M10
(Accessory)
Nut
(W3/8 or M10)