LG 100K Installation Manual page 15

Suction Line sizing criteria
The following considerations have already been accounted for when relating to the selection
charts.
- Minimum velocity of 100 fpm for vertical lines and 800fpm for horizontal lines guarantee proper
oil return
- Minimal pressure drop to minimize capacity loss
Suction line Selection Chart:
The charts below show the line sizes that can be selected for each tonnage of nit ang the per-
cent of capacity reduction the system will have because of the long line set application.
The maximum actual line length is 200 feet, equivalent line lengths would include elbows and
other components that would increase the equivalent length.
R22 suction line, capacity reduction chart (%)
Note: (-) Indicates unacceptable pressure drop
in suction line
INSTALLATION OF UNIT
R410 suction line, capacity reduction chart (%)
* Velocity is below 100 fpm, Should only be
used on horizontal line
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