97
Installation
Due to our policy of continuous product innovation, some specications may change without notication.
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Table 26: ACR Copper Tubing Material.
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 .00020
3/8 0.375 0.030 0.126 .00054 0.032 0.134 .00053
1/2 0.500 0.035 0.198 .00101 0.032 0.182 .00103
5/8 0.625 0.040 0.285 .00162 0.035 0.251 .00168
3/4 0.750 0.042 0.362 .00242 0.042 0.362 .00242
7/8 0.875 0.045 0.455 .00336 0.045 0.455 .00336
1-1/8 1.125 0.050 0.655 .00573 0.050 0.655 .00573
1
All dimensions provided are in accordance with ASTM B280 – Standard.
2
Design pressure = 551 psig.
3
ACR Tubing is available as hard drawn or annealed (soft) and are suitable for use with R410A refrigerant.
4
The Copper Tube Handbook, 2010, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.
OD (in) 1/4 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/8
Material Rigid Type “K” or “L” - Soft ACR Acceptable Rigid Type “K” or “L” Only
Min. Bend
Radius (in)
.563 .9375 1.5 2.25 3.0 3.0 3.5 4.0
Min. Wall
Thickness (in)
.03 .03 .035 .040 .042 .045 .050 .050
Table 27: Piping Wall Thicknesses.
Type Seamless Phosphorous Deoxidized
Class UNS C12200 DHP
Straight Lengths H58 Temper
Coils O60 Temper
Table 28: ACR Copper Tubing Dimensions and Physical Characteristics
1-4
• 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.
REFRIGERANT PIPING DESIGN
System Engineering
Selecting Field-Supplied Copper Tubing
Copper is the only approved refrigerant pipe material for use with LG Multi V commercial air conditioning products, and LG recommends
seamless phosphorous deoxidized ACR type copper pipe, hard-drawn rigid type “K” or “L”, or annealed-tempered, copper pipe.
• Drawn temper (rigid) ACR copper tubing is available in sizes 3/8 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).
• Annealed temper (soft) ACR copper tubing is available in sizes 1/4 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).
Tube wall thickness should meet local code requirements and be approved for an operating pressure of 551 psi. If local code does not spec-
ify wall thickness, LG suggests using tube thickness per table below. When bending tubing, try to keep the number of bends to a minimum,
and use the largest radii possible to reduce the equivalent length of installed pipe; also, bending radii greater than ten (10) pipe diameters
can minimize pressure drop. Be sure no traps or sags are present when rolling out soft copper tubing coils.
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