Stulz CeilAir CW - Table 4. Recommended Discharge Line Sizes for R407 C Refrigerant; Table 5. Recommended Discharge Line Sizes for R410 A Refrigerant

32 OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
2.6.1.2 SPLIT SYSTEMS
Oil traps must be included every 20 ft inside the vertical risers and the refrigerant lines must be sloped at
1/4 in for every 10 ft on the horizontal lines to ensure proper oil return to the compressor. An inverted trap is
required on the discharge line of the remote condenser to help prevent oil and liquid from flooding back to the
compressor.
NOTE Split System Refrigerant Line Sizing Tables
In the following tables:
• The line sizes represent the correct size for individual refrigeration circuits. Dual circuit units (models
048D to 120D) have pairs of refrigeration lines, one line per compressor.
• All pipe lengths are “Equivalent Length,” which accounts for the linear pipe length as well as equivalent
length of valves, elbows and Tee’s as shown in Table 1.
Table 4. Recommended Discharge Line Sizes For R407C Refrigerant
Model
No.
Total Btu/h
Capacity
Total kW
Capacity
Compressor to Condenser O.D. (inches)
50 ft or less 100 ft or less 150 ft or less
012 12,000 3.5 1/2 5/8 5/8
018 18,000 5.3 1/2 5/8 5/8
024 24,000 7.0 5/8 5/8 3/4
032 32,000 9.4 5/8 3/4 3/4
040 40,000 11.7 3/4 3/4 7/8
048 48,000 14.1 3/4 7/8 7/8
048D 48,000 14.1 5/8 5/8 3/4
060 60,000 17.6 3/4 7/8 1⅛
072D 72,000 21.1 5/8 3/4 3/4
084D 84,000 24.6 3/4 7/8 7/8
120D 120,000 35.2 3/4 7/8 1⅛
Table 5. Recommended Discharge Line Sizes For R410A Refrigerant
Model
No.
Total Btu/h
Capacity
Total kW
Capacity
Compressor to Condenser O.D. (inches)
50 ft or less 100 ft or less 150 ft or less
012 12,000 3.5 1/2 5/8 5/8
018 18,000 5.3 1/2 5/8 5/8
024 24,000 7.0 5/8 5/8 5/8
032 32,000 9.4 5/8 5/8 3/4
040 40,000 11.7 5/8 3/4 3/4
048 48,000 14.1 3/4 3/4 7/8
048D 48,000 14.1 5/8 5/8 5/8
060 60,000 17.6 3/4 7/8 7/8