LG MULTI F Installation Manual page 273

GENERAL INSTALLATION GUIDELINES
Refrigerant Piping
Inserts and Pipe Supports
Inserts
An insert can be installed into a floor or beam before the concrete sets so that fittings such as ducts,
pipes, or suspension bolts can be added at a later time. Decide where the inserts should be placed
before support installation.
Pipe Supports
Note:
The pipe system must be adequately supported to avoid pipe sagging. Sagging pipes become oil traps that
lead to equipment malfunction.
Pipe supports should never touch the pipe wall; supports should be installed outside
(around) the primary pipe insulation jacket. Insulate the pipe before installing the sup-
ports. Pipe supports are field-provided and must meet local code. If local codes do not
specify pipe support spacing, install pipe supports a maximum of five (5) feet on center
for straight segments of pipe up to 3/4" outside diameter size.
Wherever the pipe changes direction, place a hanger within twelve (12) inches on one
side and within twelve to nineteen (12 to 19) inches of the bend on the other side. Sup-
port piping at indoor units as shown. Support Y-branch fittings as shown.
Figure 26: Typical Pipe Support Location—Change
in Pipe Direction.
~ 12" – 19"
Figure 28: Pipe Support at Y-branch Fitting.
Max. 12"
Max. 12"
28
Max. 12"
Max. 12"
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 24: Installing an Insert Into
Concrete Beam
Figure 25: Pipe Hanger Details.
Figure 27: Pipe Support at Indoor Unit.
A
F
MULTI
F
MULTI MAX
a Concrete Beam.
Anti-vibration Material
Nail
Suspension Bolt
B
A + B ~ 12" – 19"