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Gas pipe 5/8 inch
Liquid pipe 3/8 inch
Figure 13: Heat Recovery - Refrigerant Pipe Connections
refrigerant Piping support
A properly installed pipe system will have sufficient support so that
pipes will not sag during the life of the system. As necessary, place
supports looser for segments where potential sagging could occur.
Maximum spacing of pipe supports shall meet local codes
(Figure 14).
Pipe Insulation
To prevent condensate from forming on the surface of the insulation,
calculate the proper wall thickness required based on the ambient air
conditions of the surrounding area. Use calculation procedures provided
by the pipe insulation manufacturer.
• Use insulation material with high thermal resistance and rated
for the anticipated operating temperature range. If installing in a
humid environment, use thicker insulation material as specified by
system designer.
• Insulate all cold surfaces to prevent moisture/condensate from
forming.
• Insulate and wrap each pipe separately.
• Use field-provided half (1/2) of an inch thick (or better) closed cell
insulation.
Hydro kit
Gas pipe 7/8 inch
Liquid pipe 3/8 inch
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 Life's Good" is a registered trademark of LG Corp.
Heat recovery system unit
refrigerant Pipe connections
• When connected to a Heat Recovery Unit, the Hydro Kit requires
the use of two ports. If the capacity of the Hydro Kit and other
IDU's connected to the Heat Recovery Unit are similar, install the
Hydro Kit on Ports 1 & 2.
• When twinning ports, the "twinned" pipes must be the same diam-
eter, layout, and length to balance the flow between the two
(Figure 13).
Figure 14: Refrigerant Piping Support
Insulation for Indoor Unit Port
(Field Supplied)
Overlap Insulation Where the
Port and the Piping Meet
Insulation Clip (Field Supplied)
No Clearance
Figure 15: Typical Refrigerant Line Joint Insulation Detail
rouGHING-IN
Pipe Insulation
Typical Refrigerant Line Connection
Insulation Detail
Insulation for Refrigerant
Piping (Field Supplied)
25
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