Parallel compressor systems – Heatcraft Refrigeration Products PARALLEL COMPRESSOR SYSTEMS 25000102 User Manual
Page 15
Parallel Compressor Systems Installation & Operations Manual, October 2004
15
Parallel Compressor Systems
Suction Line Size
Liquid Line Size
System
Capacity
BTU/H
Suction Temperature
Receiver to
Expansion Valve
Equivalent Lengths
0˚F
Lengths
-10˚F
Equivalent Lengths
-20˚F
Equivalent Lengths
100’ 150’ 200’ 25’ 50’ 75’ 100’ 150’ 200’ 25’ 50’ 75’ 100’ 150’ 200’ 25’ 50’ 75’ 100’ 150’ 200’
3/8
1/2
1/2
3/8
3/8
3/8
3/8
1/2
1/2
3/8
3/8
3/8
1/2
1/2
1/2
3/8
3/8
3/8
3/8
3/8
3/8
1,000
5/8
5/8
5/8
1/2
1/2
1/2
5/8
5/8
5/8
1/2
1/2
5/8
5/8
5/8
7/8
3/8
3/8
3/8
3/8
3/8
3/8
3,000
5/8
5/8
7/8
1/2
1/2
5/8
5/8
5/8
7/8
1/2
5/8
5/8
5/8
7/8
7/8
3/8
3/8
3/8
3/8
3/8
3/8
4,000
5/8
7/8
7/8
1/2
5/8
5/8
7/8
7/8
7/8
5/8
5/8
7/8
7/8
7/8
7/8
3/8
3/8
3/8
3/8
3/8
3/8
6,000
7/8
7/8
7/8
5/8
7/8
7/8
7/8
7/8
7/8
5/8
7/8
7/8
7/8 1-1/8 1-1/8 3/8
3/8
3/8
3/8
3/8
3/8
9,000
7/8
7/8 1-1/8 7/8
7/8
7/8
7/8 1-1/8 1-1/8 7/8
7/8
7/8 1-1/8 1-1/8 1-1/8 3/8
3/8
3/8
3/8
3/8
3/8
12,000
7/8 1-1/8 1-1/8 7/8
7/8
7/8 1-1/8 1-1/8 1-1/8 7/8
7/8 1-1/8 1-1/8 1-1/8 1-1/8 3/8
3/8
3/8
3/8
3/8
1/2
15,000
1-1/8 1-1/8 1-1/8 7/8
7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8
3/8
3/8
3/8
1/2
1/2
18,000
1-1/8 1-1/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8
3/8
1/2
1/2
1/2
1/2
24,000
1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8
3/8
1/2
1/2
1/2
1/2
30,000
1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8
1/2
1/2
1/2
1/2
1/2
36,000
1-3/8 1-3/8 1-5/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 3/8
1/2
1/2
1/2
1/2
5/8
42,000
1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1/2
1/2
1/2
1/2
1/2
5/8
48,000
1-3/8 1-5/8 1-5/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2
1/2
1/2
1/2
5/8
5/8
54,000
1-5/8 1-5/8 2-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2
1/2
1/2
5/8
5/8
5/8
60,000
1-5/8 1-5/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2
1/2
5/8
5/8
5/8
5/8
66,000
1-5/8 2-1/8 2-1/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1/2
1/2
5/8
5/8
5/8
5/8
72,000
1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1/2
1/2
5/8
5/8
5/8
7/8
78,000
1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1/2
5/8
5/8
5/8
5/8
7/8
84,000
2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1/2
5/8
5/8
5/8
7/8
7/8
90,000
2-1/8 2-1/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 5/8
5/8
5/8
7/8
7/8
7/8
120,000
2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 5/8
7/8
7/8
7/8
7/8
7/8
150,000
2-1/8 2-5/8 2-5/8 1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 5/8
7/8
7/8
7/8
7/8 1-1/8
180,000
2-5/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8
7/8
7/8
7/8
7/8 1-1/8
210,000
2-5/8 2-5/8 3-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 7/8
7/8
7/8
7/8 1-1/8 1-1/8
240,000
2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 7/8
7/8 1-1/8 1-1/8 1-1/8 1-1/8
300,000
3-1/8 3-1/8 3-1/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 7/8
7/8 1-1/8 1-1/8 1-1/8 1-1/8
360,000
3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-5/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 4-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8
480,000
3-5/8 3-5/8 4-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8
600,000
4-1/8 4-1/8 5-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 5-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8
720,000
4-1/8 5-1/8 5-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 5-1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8
900,000
* NOTES:
1. Sizes that are highlighted indicate maximum suction line sizes that should be
used for risers. Riser size should not exceed horizontal size. Properly placed
suction traps must also be used for adequate oil return. All sizes shown are for
OD Type L copper tubing
2. Suction line sizes selected at pressure drop equivalent to 2˚F. Reduce estimate
of system capacity accordingly
3. Recommended liquid line size may increase with reverse cycle hot
gas systems
4. If system load drops below 40% of design, consideration to installing double
suction risers should be made
Table 6B. Recommended Line Sizes for R-22 (continued)*