Selecting Field Supplied Piping - LG LV181HV4 Installation Manual

SELECTING FIELD SUPPLIED PIPING

Selecting Field-Supplied Copper Piping
Always follow local codes when selecting and installing copper pipe and piping system components.
Approved piping for use with LG Single Zone products will be marked "R410 RATED" along the length of the pipe. Piping wall thickness must
meet local code requirements and be approved for a maximum operating pressure of 551 psi. When bending piping, try to keep the number
of bends to a minimum, and use the largest radii possible to reduce the equivalent length of installed piping; also, bending radii greater than
ten (10) piping diameters can minimize pressure drop. Be sure no traps or sags are present.
For Single Zone Systems
LG prefers the use of ACR copper piping rated at the system working pressure was used.
Always properly support the piping as per the instructions on page 33.
Table 7: ACR Rated Copper Tubing Material.
Type
Class
Straight Lengths
Coils
Table 8: Piping Tube Thicknesses.
OD (in)
Material Rigid or Soft ACR Rated for R410A
Min. Bend Radius (in) 0.563
Min. Wall Thickness (in)
Table 9: ACR Copper Tubing Dimensions and Physical Characteristics
Nominal Pipe
Actual Outside
Outside
Diameter (in)
Diameter (in)
1/4 0.250
3/8 0.375
1/2 0.500
5/8 0.625
3/4 0.750
7/8 0.875
1-1/8 1.125
All dimensions provided are in accordance with ASTM B280 – Standard..
1
Design pressure = 551 psig.
2
The Copper Tube Handbook, 2010, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.
3
• Commercially available piping often contains dust and other materials. Always purge it clean with a dry nitrogen.
• Prevent dust, water or other contaminants from entering the piping during installation.
28 | INTRODUCTION
Seamless Phosphorous Deoxidized
1/4 3/8 1/2
0.9375 1.5
0.03 0.03 0.03
Drawn Temper
Nominal Wall
Weight (lb/ft)
Thickness (in)
--
0.030 0.126
0.035 0.198
0.040 0.285
0.042 0.362
0.045 0.455
0.050 0.655
Due to our policy of continuous product innovation, some specifications may change without notification.
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LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
UNS C12200 DHP
H58 Temper
O60 Temper
5/8 3/4
Rigid or Solid ACR Rated for R410A
2.25 3.0
0.03 0.03
.
1-3
Cubic ft per Nominal Wall
Linear ft Thickness (in)
-- --
0.00054
0.00101
0.00162
0.00242
0.00336
0.00573
7/8 1-1/8 1-3/8
3.0 3.5 4.0
0.03 0.03 0.04
Annealed Temper
Weight (lb/ft)
0.030 0.081
0.032 0.134
0.032 0.182
0.035 0.251
0.042 0.362
0.045 0.455
0.050 0.655
1-5/8
4.5
0.050
Cubic ft per
Linear ft
0.00020
0.00053
0.00103
0.00168
0.00242
0.00336
0.00573