Basic Refrigeration Cycle

Even the most seasoned troubleshooters sometimes find it helpful to visualize a problem in relationship to the basic operating principles of a refrigeration system. Although equipment design and application vary, the basics of mechanical heat transfer remain the same.

Refrigerant Line Charging Information for R-22 Air Conditioning Systems

1/4" OD Liquid Line --- 0.25 oz. per ft. Length (ft.)

1 R-22 (oz.) 2 .25 .50

3 .75

5/16" OD Liquid Line --- 0.45 oz. per ft. Length (ft.) 12 3

R-22 (oz.) .45 .90

3/8" OD Liquid Line --- 0.60 oz. per ft. Length (ft.)

1 R-22 (oz.) 2

4

5

6

7

8

9 1.0 1.25 1.50 1.75 2.0 2.25 4 5 6 78 9 1.35 1.80 2.25 2.70 3.15 3.60 4.05 3 4 5 6 7 8 9 .60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40

10 2.50 10 4.50 10 6.00