88 | LIMITS / PLACEMENT
MULTI V 5 Outdoor Unit Engineering Manual
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PIPING LIMITATIONS
For Systems Designed for Heat Pump Operation
Figure 25: Typical Heat Pump System Building Layout with Piping Limitations.
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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height1
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16.4 feet
Distance between Outdoor Unit to Outdoor Unit
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Distance between two Y-branches / Headers
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Table 20: Piping Limitations for Heat Pump Operation (See next page).
Elevation Differential ODU to IDU: 360'
Elevation Differential IDU to IDU: 131'
Longest pipe length after first branch: 131' (295' conditional)
Longest pipe length: 656' actual (738' equiv.)
Max. Total Equivalent Piping Length: 3,280'
Following pages present Multi V 5 piping limitations and are for illustrative purposes only. Designers MUST use LATS when designing LG VRF systems.
1
Assume equivalent pipe length of Y-branch is 1.6 feet, and equivalent pipe length of header is 3.3 feet.
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