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INSTALLING MULTI F MAX SYSTEMS
Multi F MAX Y-Branch Kit PMBL5620
The LG-supplied Y-Branch kit PMBL5620 MUST be used when
installing two (2) branch distribution units in parallel on one (1) Multi
F MAX system.
Field-supplied fittings are not permitted. Each
Y-Branch kit includes two (2) Y-branches (one for the liquid line and
one for the vapor line) and insulation covers.
Y-branches can be installed in horizontal or vertical configurations.
When installed vertically, position the Y-branch so the straight
Y-branch so the take-off leg is level and shares the same horizontal
Y-branches must be properly installed following instructions in the
applicable LG manual. Y-branches must always be installed with the
single port facing the outdoor unit and the two-port end facing the
branch distribution units.
Do not install Y-branches backwards
as refrigerant flow cannot make U-turns. The Y-branch kit must be
located at least three (3) feet from the outdoor unit. Provide a min-
imum of 20 inches between a Y-branch and the branch distribution
unit.
When a Y-branch is located in a pipe chase or other concealed
space, access doors must be provided for inspection access.
the main pipe segment entered into LATS piping design software.
• Design pressure is 551 psig.
• All dimensions in inches. Tolerance ±1/4 inch.
• Images are not to scale.
Figure 60:
A
Viewed from A in direction of arrow
54
Horizontal
plane
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.
Figure 58:
1
Figure 59: Y-Branch Dimensions Diagram.
1
A
A = To Outdoor Unit
Table 30: Y-Branch Connection Diameters.
Y-Branch
Model
Liquid
PMBL5620
Vapor
Figure 61:
Vertical Up
Configuration
Within 5°
Within 5°
Within ± 3°
2
Y
3
X
B = To Branch Distribution Unit
Type
1
2
3
3/8
3/8
3/8
3/4
3/4
3/4
Vertical Down
Configuration
Within ± 3°
F
MULTI
F
MULTI
MAX
2
3
B
Dimensions
X
Y
13.80
3.24
12.48
3.02
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