LG Multi F MAX PMBD3640 User Manual

36
MULTI F / MULTI F MAX Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
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Example: LMU540HV outdoor unit with seven (7)
indoor units, and two (2) branch distribution units
connected.
ODU: Outdoor Unit.
IDU: Indoor Unit.
BD: Branch Distribution Unit(s).
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B
A
h2 ≤ 49.2 feet
A
h3 ≤ 32.8 feet
h4 ≤ 49.2 feet
h1 ≤ 98.4 feet
BDU Y-Branch
BDU
IDU
A
ODU
IDU
IDU
IDU
IDU
IDU
IDU
B
B
B
B
B
B
Pipe Length
(ELF = Equivalent
Length of pipe in
Feet)
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Main pipe (Outdoor Unit to
Branch Distribution Units:
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Minimum 9.8 feet
Maximum IHHW
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Branch pipe (Branch
Distribution Units to Indoor
Units: B)
Minimum 10 feet
Maximum IHHW
Elevation Differential
(All Elevation
Limitations are
Measured in Actual
Feet)
If outdoor unit is above or below indoor unit (h1) IHHW
Between the farthest two indoor units (h2) IHHW
Between branch distribution unit and farthest
connected indoor unit(s) (h3)
IHHW
Between branch distribution units (h4) IHHW
Max. Combination of
IDUs
LMU480HV = 65,000 LMU540HV = 73,000
Piping Main Pipe A (inch) Branch Pipe B
Liquid Ø3/8
Depends on the size
of the indoor unit piping
Gas Ø3/4
Example: LMU540HV outdoor unit with four (4)
indoor units, and one (1) branch distribution unit
connected.
ODU: Outdoor Unit.
IDU: Indoor Unit.
BDU: Branch Distribution Unit.
A: Main Pipe.
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A
h2 ≤ 49.2 feet
h3 ≤ 32.8 feet
h1 ≤ 98.4 feet
BDU
ODU
IDU
IDU
IDU
IDU
B
B
B
B
Multi F MAX System Example with One Branch Distribution Unit
Multi F MAX System Example with Two Branch Distribution Units
Multi F MAX Outdoor Unit Piping Length and Elevation Limitations
Table 22: Multi F MAX Refrigerant Piping System Limitations.
h1
C
Branch Pipe
Main Pipe
BD Unit
BD Unit
A
B
h2
Figure 42: Multi F MAX Refrigerant Piping
System Limitations.
Table 23: Multi F MAX Piping Sizes.
REFRIGERANT PIPING CONNECTIONS

LG Multi F MAX PMBD3640 Specifications

General

Brand	LG
Model	Multi F MAX PMBD3640
Category	Air Conditioner
Language	English