Selecting Field Supplied Piping - LG LS243HLV3 Installation Manual

Single zone extended piping wall mounted

Engineering manual (56 pages)

Table of Contents

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 28.

Table 10: ACR Rated Copper Tubing Material.

Type

Class

Straight Lengths

Coils

Table 11: ACR Rated Piping Wall Thicknesses.

OD (in)

Material

Rigid or Soft ACR Rated for R410A

Min. Bend Radius (in)

Min. Wall Thickness (in)

Table 12: ACR Copper Tubing Dimensions and Physical Characteristics

Nominal Pipe

Actual Outside

Outside

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

1-3/8

1.375

1-5/8

1.625

All dimensions provided are in accordance with ASTM B280 – Standard..

Design pressure = 551 psig.

The Copper Tube Handbook, 2016, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.

• Commercially available piping often contains dust and other materials. Always blow it clean with a dry nitrogen.

• Prevent dust, water or other contaminants from entering the piping during installation.