Lg Engineered Y-Branch Kits And Header Kits; Y-Branch Kits - LG MULTI V S ARUN038GSS4 Installation Manual

Table 10: ACR Copper Tubing Dimensions and Physical Characteristics
Nominal Pipe
Actual Outside
Outside
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
ACR Tubing is available as hard drawn or annealed (soft) and are suitable for use with R410A refrigerant.
3
The Copper Tube Handbook, 2010, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.
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. Contaminants can cause mechanical failure.

LG Engineered Y-branch Kits and Header Kits

LG Y-branch and Header kits are highly engineered devices designed to evenly divide the flow of refrigerant, and are used to join one pipe
segment to two or more segments.
No Substitutions
a Multi V S piping system are 45° and 90° elbows.
Install Correctly
• Y-branches can be installed upstream between the Header and the outdoor unit, but a Y-branch cannot be installed between a header
and an indoor unit.
• To avoid the potential of uneven refrigerant distribution through a header fitting, minimize the difference in equivalent pipe length be-
tween the header fitting and each connected indoor unit.
Table 11: Y-Branches and Headers.
Y-branch Kit Model No
ARBLN01621
ARBLN03321
• If the diameter of the branch pipe segments differ from that of the designated refrigerant piping, trim to the desired section using a pipe
cutter, and then use an adapter to connect.
•
Failure to do so can result in reduced heating / cooling performance or equipment malfunction.

Y-Branch Kits

LG Y-branch and kits are highly engineered devices designed to evenly divide the flow of refrigerant, and are used to join one pipe seg-
refrigerant piping system at each transition. Field-supplied "T" fittings or "Y" branches will not be accepted.
each pipe segment entered into LATS piping design software.
LG Y-Branch Kits Consist of:
• Y-branches: For heat pump systems - one liquid line and one vapor line (two [2] total).
• Reducer fittings as applicable.
•
GENERAL INSTALLATION GUIDELINES
Nominal Wall
-- --
0.030 0.126
0.035 0.198
0.040 0.285
0.042 0.362
0.045 0.455
0.050 0.655
Headers
4 branch
ARBL054
ARBL104
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.
.
1-4
Cubic ft per Nominal Wall
Linear ft
-- 0.030
.00054 0.032
.00101 0.032
.00162 0.035
.00242 0.042
.00336 0.045
.00573 0.050
7 branch
ARBL057
ARBL107
Piping Preparation
Annealed Temper
Cubic ft per
Linear ft
0.081 .00020
0.134 .00053
0.182 .00103
0.251 .00168
0.362 .00242
0.455 .00336
0.655 .00573
Do not install Y-branches
19