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4
1111 W. 35th Street, Chicago, IL 60609 USA • tripplite.com/support
21-10-329 934069_RevA
3. Refrigerant and Oil Charge
When the connecting piping between the In-Row Cooling Unit and the condenser exceeds 33 ft. (10 m), add more
refrigerant. Use RL68H (or of the same viscosity) synthetic oil. Calculate the additional amount according to the following
formula:
Liquid pipe diameter (in.) Length ratio (lb./ft.)
3/8 0.039
1/2 0.075
5/8 0.122
3/4 0.145
7/8 0.243
When the length of the connecting piping exceeds 33 ft. (10 m), add lubricating oil using the following formula:
L: Amount of lubricating oil to add (ml)
R: Additional refrigerant charge (kg)
Note: Maximum additional oil is 4L. If calculation is over 4L, do not exceed 4L.
Tripp Lite has a policy of continuous improvement. Specifications are subject to change without notice.
Photos and illustrations may differ slightly from actual products.
Additional amount (lb.) = Length ratio
R (kg) =
x Liquid line length (ft.)
( )
lb.
ft.
Additional amount (lb.)
2.2
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