LGRED Heat LMU180HHV Installation Manual

35
General Refrigerant Piping System Information
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.
MULTI
F
MAX
MULTI
F
WITH
Table 15: ACR Rated Copper Tubing Material.
Table 16: ACR Rated Piping Wall Thicknesses.
1
All dimensions provided are in accordance with ASTM B280 – Standard.
2
Design pressure = 551 psig.
3
The Copper Tube Handbook, 2016, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.
Type Seamless Phosphorous Deoxidized
Class UNS C12200 DHP
Straight Lengths H58 Temper
Coils O60 Temper
Table 17: ACR Copper Tubing Dimensions and Physical Characteristics
1-3
.
Selecting Field-Supplied Copper Piping
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
Always follow local codes when selecting and installing copper pipe and piping system components.
• 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.
For Multi-Zone Split Systems
Use ACR copper piping rated at the system working pressure (rated for R410A refrigerant).
Approved piping for use with LG HVAC 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.
Always properly support the piping as per the instructions on page 41.
SELECTING COPPER PIPING
Nominal Pipe
Outside
Diameter (in)
Actual Outside
Diameter (in)
Tempered (Hard Drawn) Annealed (Soft)
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
1-3/8 1.375 0.055 0.884 0.00875 0.055 0.884 0.00875
1-5/8 1.625 0.060 1.14 0.0124 0.060 1.14 0.0124