LG Electronics LSU120HXV2 User Manual

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Single Zone Mega and Mega 115V Wall Mounted Installation Manual

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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 31.

Table 10: Piping Tube Thicknesses.

Type Seamless Phosphorous Deoxidized

Class UNS C12200 DHP

Straight Lengths H58 Temper

Coils O60 Temper

Table 11: ACR Rated Copper Tubing Material.

OD (in) 1/4 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/8 1-5/8

Material Rigid or Soft ACR Rated for R410A Rigid or Solid ACR Rated for R410A

Min. Bend Radius (in) 0.563 0.9375 1.5 2.25 3.0 3.0 3.5 4.0 4.5

Min. Wall Thickness (in) 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.050

Table 12: ACR Copper Tubing Dimensions and Physical Characteristics

1-3

Nominal Pipe

Outside

Diameter (in)

Actual Outside

Diameter (in)

Drawn Temper Annealed Temper

Nominal Wall

Thickness (in)

Weight (lb/ft)

Cubic ft per

Linear ft

Nominal Wall

Thickness (in)

Weight (lb/ft)

Cubic ft per

Linear ft

1/4 0.250 -- -- -- 0.030 0.081 0.00020

3/8 0.375 0.030 0.126 0.00054 0.032 0.134 0.00053

1/2 0.500 0.035 0.198 0.00101 0.032 0.182 0.00103

5/8 0.625 0.040 0.285 0.00162 0.035 0.251 0.00168

3/4 0.750 0.042 0.362 0.00242 0.042 0.362 0.00242

7/8 0.875 0.045 0.455 0.00336 0.045 0.455 0.00336

1-1/8 1.125 0.050 0.655 0.00573 0.050 0.655 0.00573

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

Design pressure = 551 psig.

The Copper Tube Handbook, 2010, 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 inert gas.

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

SELECTING FIELD SUPPLIED PIPING

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LG LSU120HXV2 Air Condition

User Manual - Page 26