LG MULTI V WATER 5 ARW Series User Manual

72 | LIMITS / PLACEMENT
MULTI V Water 5 Source Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
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Table 26: Piping Limitations for Heat Recovery Operation.
Length
Total pipe length Longest actual pipe length Equivalent pipe length
1
A + ΣB + ΣC ≤ 984 ft. (Standard) / 1,640 ft.
(Conditional Application)
492 ft. (Standard) / 656 ft. (Conditional
Application)
574 ft. (Standard) / 738 ft. (Conditional
Applications)
ℓ
Longest pipe length after first branch
≤131 feet (295 feet conditional application)
Elevation 1
Elevation differential (Water Source Unit ↔ Indoor Unit)
Height ≤164 feet
Elevation 2
Elevation differential (Indoor Unit ↔ Indoor Unit) [IDUs connected to separate HRUs which are parallel (Y-branch) connected.]
Height ≤131 feet
Elevation 3
Elevation differential (Indoor Unit ↔ Connected HRU or Series Connected HRU]
Height ≤49 feet
Elevation 4
Elevation differential (Indoor Unit ↔ Indoor Unit [connected to same Heat Recovery Unit])
Height ≤49 feet
Elevation 5
Elevation differential (Highest WSU ↔ Lowest WSU unit)
Height ≤16 feet
Distance between WSU to WSU
≤33 feet
Distance between ttings and Indoor Unit
≥20 inches
Distance between ttings and Y-branches / Headers
≥20 inches
Distance between two Y-branches / Headers
≥20 inches
Height differential between two Heat Recovery Units if installed with a Y-branch
98 ft.2
Height differential between two series-piped Heat Recovery Units
≤16 feet
Maximum number of Heat Recovery Units per system
16
1
Assume equivalent pipe length of Y-branch is 1.6 feet, and equivalent pipe length of header is 3.3 feet.
2 Up to 131 ft. may be possible with certain applications. Contact LG Engineering for additional information.
PIPING LIMITATIONS
For Systems Designed for Heat Recovery Operation
Following pages present Multi V Water 5 piping limitations and are for illustrative purposes only. Designers MUST use LATS when designing LG VRF
systems.
For Heat Recovery Unit information, refer to the applicable Engineering Manual on www.lghvac.com.

LG MULTI V WATER 5 ARW Series Specifications

General

Brand	LG
Model	MULTI V WATER 5 ARW Series
Category	Heat Pump
Language	English