Connection Sizes; Figure 28: Connection Ports Suction & Liquid - Emerson Copeland EazyCool OM 501 Series Application Manuallines

Pipe runs should be kept as short as possible, using the minimum number of directional changes.
Use large radius bends and avoid trapping of oil and refrigerant. This is particularly important for
the suction line. The suction line should ideally slope gently towards the unit. Recommendation
slope is 1/200 to 1/250. Upper and lower oil traps, double risers and reduced pipe diameters may
be required for suction lines where long vertical risers cannot be avoided.
All pipes should be adequately supported to prevent sagging which can create oil traps. The
recommended pipe clamp support distance is shown in Table 29 below:
Max distance between
Tube size
12.7 mm (1/2 inch)
16.0 mm (5/8 inch
22.0 mm (7/8 inch)
28.5 mm (1 1/8 inch)
Table 17: Maximum distance between 2 clamp supports
NOTE: It is strongly recommended to insulate both the suction and liquid interconnecting
piping between the OL unit and the evaporator.

3.3.2 Connection sizes

Figure 28: Connection ports Suction & Liquid
Suction line Liquid line
1 5/8" 7/8"
Table 18: Suction- & Liquid line diameter
30
2 clamp supports
1.20 m
1.50 m
1.85 m
2.20 m
C6.1.9/0617/E