LMU421HHV Submittal

For connual product development, LG reserves the right to change specicaons without noce.
© LG Electronics U.S.A., Inc., Englewood Clis, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp. /www.lghvac.com
Page 3 of 3
Job Name/Locaon:
Tag No.:
Date:
PO No.:
Mul F MAX with LGRED Outdoor Unit Refrigerant Piping System Limitaons.
Pipe Length
(ELF = Equivalent
Length of pipe in Feet)
Total piping length (ΣA + ΣB) ≤475.7 feet
Main pipe (Outdoor Unit to Branch Distribuon Units: A)
Minimum for Each (A) Piping Segment 16.4 feet
Maximum (ΣA) ≤180.4 feet
Total branch piping length (ΣB) ≤295.3 feet
Branch pipe (Branch Distribuon Units to Indoor Units: B)
Minimum 16.4 feet
Maximum ≤49.2 feet
Elevaon Dierenal
(All Elevaon
Limitaons are
Measured in Actual
Feet)
If outdoor unit is above or below indoor unit (h1) ≤98.4 feet
Between the farthest two indoor units (h2) ≤49.2 feet
Between branch distribuon unit and farthest connected indoor unit(s) (h3) ≤32.8 feet
Between branch distribuon units (h4) ≤49.2 feet
Mul F MAX with LGRED Piping Sizes.
Piping Main Pipe A (inch) Branch Pipe B
Liquid Ø3/8
Depends on the size of
the indoor unit piping.
Vapor Ø3/4
SB_MultiF_MAX_LGRED_LMU421HHV_2021_10_18_113447
3.5 Ton Heat Pump
LMU421HHV
Multi F MAX with LGRED° Outdoor Unit