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The ice machine compressor must have the proper oil return. Line-set rises, drop, or horizontal runs greater
than the maximum distance allowed will exceed the compressor start-up and pumping design limits, and will
result in poor oil return to the compressor.
Line Set Rise: 35 Ft. Maximum [10.66 meters]
Line Set Drop: 15 Ft. Maximum [4.57 meters]
2. Calculated Line Set Distance: 100 Ft. [30.48 meters]
To prevent the combination of rises, drops and horizontal runs exceeding the compressor start-up and pumping
design limit, the following calculations should be made:
A - (RISE)_ CONDENSER HIGHER THEN EVAP. MAX. 35
B – LINE LENGTH 15’: EXAMPLE
B - LINE LENGTH 35’: EXAMPLE
C - (DROP) CONDENSER LOWER THAN EVAP. 15’: MAX.
A
B
B
C
Maximum Line Set Distance Formula
3. Measured rise x 1.7=Calculated (Rise 35 ft. Max.) [10.66 meters]
4. Measured drop x 6..6=Calculated (Drop 15ft. Max.) [4.57 meters]
5. Measured Horizontal Distance= actual measurement.
6. Total Calculated distance (A+B+C)=Total Calculated Distance (100 ft. Max.) [30.48 meters]
Examples:
a. Insert measured rise (R) into formula and multiply it by 1.7 to get a calculated rise.
example: A condenser located 15 ft. [4.572 meters] above the ice machine has a 25.5 ft. [8.874 meters]
calculated total (15 ft. x 1.7 = 25.5).
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