Application Guidelines - LG Multi V ARNU093TUD4 Engineering Manual
Ceiling cassette indoor unit; one-way ceiling cassettes; two-way ceiling cassettes; four-way ceiling cassettes
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Also See for Multi V ARNU093TUD4:
- Engineering manual (108 pages) ,
- Installation manual (75 pages) ,
- Installation manual (73 pages)
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APPLICATION GUIDELINES
General Mounting / General Drain Piping Information
General Mounting Procedure
1. Using the included paper pattern, select and mark the area where the hanging
bolts, refrigerant and condensate piping will be placed. The hanging bolts must be
slightly tilted to the direction of the drain hose.
2. Drill the holes.
3. Install the unit horizontally using a level gauge.
Figure 102: Hanging Bolt Installation.
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
The following parts are field supplied:
• Hanging bolt - W-3/8" or 1/2"
• Nut - W-3/8" or M10
• Spring washer - M10
General Drain Piping Information
All ceiling-cassette indoor units generate water during cooling
operation, therefore, properly handling this condensation must be
considered.
Ceiling-cassette indoor units include factory-installed drain pumps.
Depending on the location of the indoor unit, condensation can be
drained directly to the outside of the building, or a common indoor
unit drainage piping system can be installed.
Flexible Drain Hose
Ceiling-cassette indoor units in-
clude a factory-provided flexible
drain hose (with two clamps)
to connect the indoor unit to
the drain piping / drain piping
system.
If necessary, the drain hose can
be extended. When the bottom
surface of the indoor unit is at
an elevation below the receiving
building drain line connection,
install an inverted trap at the
top of the condensate pump dis-
charge riser before connection
to the building drain pipe.
130 | GUIDELINES
Keep the length of the bolt from the
bracket to 1-1/2 inches (1-9/16 inches
One-Way only)
Ceiling board
Flat washer for M10
(accessory)
Flat washer for M10
(accessory)
Nut
Bottom align
(W3/8 or M10)
Included with the indoor unit:
• Flat washer - M10
Figure 104: Flexible Drain Hose
Connection.
©
Figure 101: Using the Paper Pattern / Drilling Holes for
the Bolts, Refrigerant and Condensate Piping.
Ceiling
Air Conditioner body
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.
Set screw of
paper pattern (4 pieces)
Paper pattern
for installation
Open the ceiling board
along the outer edge of the
paper pattern
Figure 103: Ceiling-Cassette Indoor Unit Drain Pump to Drain Piping
System.
Table 56:
Indoor Unit
One-Way Ceiling Cassette
Two-Way Ceiling Cassette
Four-Way Ceiling Cassette
Ceiling
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
Hanger distance
Max
11-13/16 inch
Hanger Bracket
3. 3 ~49. 2 ft
1/50~1/100 slope
Metal
clamp
Flexible drain hose
Insulation
Drain Pipe Dia.
Drain Type
(OD / ID, in.)
27-1/2 in. Lift
Drain Pump,
Ø1-1/4 / Ø1
Factory Installed
-
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