Header Kits; Due To Our Policy Of Continuous Product Innovation, Some Specifications May Change Without Notification - LG ARUM072BTE5 Installation Manual

INSTALLING FOR HEAT RECOVERY
OPERATION

Header Kits

No Substitutions on Piping Components
Only LG supplied Y-branch and Header fittings can be used to join one pipe segment to two or more segments.
or field-fabricated components such as tee's, Y-fittings, couplings, headers, or other branch fittings are not permitted. The
only field-provided fittings allowed in a Multi V piping system are 45° and 90° long radius elbows and full port ball valves (if
applicable).
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 between the
header fitting and each connected indoor unit.
Header Kits
LG 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. Header kits are intended for use where
multiple indoor units are in the same vicinity and it would be better
to "home-run" the run-out pipes back to a centralized location. If
connecting multiple indoor units that are far apart, Y-branches may
be more economical.
LG Header Kits Consist of:
• Two headers (one liquid line, one vapor line).
• Reducer fittings as applicable.
• Molded clam-shell type peel and stick insulation covers—one for
the liquid line and one for the vapor line.
Headers must be installed with the main pipe level in the horizontal
plane. Distribution ports must be either level in the horizonal plane
or within ±3° of plumb in the vertical plane.
When connecting indoor units to a Header, always connect the unit
with the largest nominal capacity to the port closest to the outdoor
unit. Then install the next largest indoor unit to the next port, working
down to the smallest indoor unit.
Do not skip ports. All indoor
units connected to a single
Header fitting should be located
with an elevation difference
between indoor units that does
not exceed 49 feet.
72
Incorrect Header Configuration.
ELEVATION
VIEW

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.
Header Kit—Horizontal Rotation Limit (Ports Must Point to a Horizontal
Direction).
Smaller Indoor Units
ELEVATION VIEW
Vertical Header Insulation and Piping Detail (Ports Must Point to an
Upright Direction).
ELEVATION VIEW
Field-Supplied Insulation
LG Supplied Header
Field-Supplied Copper Piping
Incorrect Header Configuration (Ports Pointing Downward).
ELEVATION VIEW
Third-party
Largest Indoor Units
Header Inlet
+0.0
-0.0
Header End View
Field-Supplied Copper Piping
LG Supplied Insulation Jacket