LG Multi V 5 Engineering Manual

LIMITS / PLACEMENT | 91
Piping Limitations and Placement Considerations
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Figure 26: Typical Heat Recovery System Building Layout with Piping Limitations.
PIPING LIMITATIONS
For Systems Designed for Heat Recovery Operation
Following pages present Multi V 5 piping limitations and are for illustrative purposes only. Designers MUST use LATS when designing LG VRF systems.
Table 24: Piping Limitations for Heat Recovery Operation (See next page).
Length
Total pipe length Longest actual pipe length Equivalent pipe length
1
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Longest pipe length after first branch
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Elevation1
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Elevation2
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Elevation3
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49 feet
Elevation4
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49 feet
height1
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Distance between Outdoor Unit to Outdoor Unit
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Distance between two Y-branches / Headers
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Height differential between two Heat Recovery Units if installed with a Y-branch
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Height differential between two series-piped Heat Recovery Units
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Elevation Differential HRU to HRU: 49'
Max. Total Equivalent Piping Length: 3,280'
Elevation Differential Two
IDUs Connected to One
HRU: 49'
Elevation Differential ODU to IDU: 360'
Elevation Differential IDU to IDU: 131'
Longest pipe length: 656' actual (738' equiv.)
Elevation Differential HRU to IDU: 49'
1
Assume equivalent pipe length of Y-branch is 1.6 feet, and equivalent pipe length of header is 3.3 feet.

LG Multi V 5 Specifications

General

Type	VRF (Variable Refrigerant Flow)
Refrigerant	R410A
Compressor Type	Inverter Scroll Compressor
Outdoor Unit Fan Type	Axial Fan
Cooling Capacity	22.4 kW to 270 kW
Energy Efficiency	High
Operating Range	Cooling: -5°C to 48°C
Power Supply	380-415V, 50/60Hz
Heat Exchanger Type	Microchannel
Control Type	Centralized Control
Indoor Unit Options	Cassette, Wall Mounted, Ducted
Heat Recovery	Available
Warranty	Varies by region (typically 5 years compressor, 1-2 years parts)