![Manual background](/images/new-backgrounds/51158/5115825x1.webp)
Table 8. Recommended Line Sizes for
Capacity
BTUH
|
|
|
|
|
|
|
| Suction Line Size |
|
|
|
|
|
|
| Liquid Line Size | ||||
|
|
|
|
|
|
|
| Suction Temperature |
|
|
|
|
|
|
| Receiver to | ||||
| +20˚F |
| +10˚F |
|
|
|
| Expansion Valve | ||||||||||||
|
|
|
|
|
|
| Equivalent | |||||||||||||
Equivalent Lengths | Equivalent Lengths | Equivalent Lengths | Equivalent Lengths | Equivalent Lengths | Equivalent Lengths |
| ||||||||||||||
| Lengths | |||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
25' | 50' | 100' 150' | 25' | 50' | 100' 150' | 25' | 50' | 100' 150' | 25' | 50' | 100' 150' | 25' | 50' | 100' 150' | 25' | 50' | 100' 150' | 25' | 50' | 100' 150' |
1,000 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 1/2 | 1/2 | 3/8 | 3/8 | 1/2 | 1/2 | 3/8 | 3/8 | 1/2 | 1/2 | 3/8 | 1/2 | 1/2 | 5/8 | 3/8 | 3/8 | 3/8 | 3/8 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
3,000 | 3/8 | 3/8 | 1/2 | 1/2 | 3/8 | 1/2 | 1/2 | 5/8 | 1/2 | 1/2 | 5/8 | 5/8 | 1/2 | 1/2 | 5/8 | 7/8 | 1/2 | 1/2 | 5/8 | 7/8 | 1/2 | 1/2 | 5/8 | 7/8 | 3/8 | 3/8 | 3/8 | 3/8 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
4,000 | 3/8 | 1/2 | 1/2 | 5/8 | 1/2 | 1/2 | 5/8 | 5/8 | 1/2 | 5/8 | 5/8 | 7/8 | 1/2 | 5/8 | 7/8 | 7/8 | 5/8 | 5/8 | 7/8 | 7/8 | 1/2 | 5/8 | 7/8 | 7/8 | 3/8 | 3/8 | 3/8 | 3/8 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
6,000 | 1/2 | 1/2 | 5/8 | 7/8 | 1/2 | 1/2 | 5/8 | 7/8 | 1/2 | 5/8 | 7/8 | 7/8 | 5/8 | 5/8 | 7/8 | 7/8 | 5/8 | 5/8 | 7/8 | 7/8 | 5/8 | 5/8 | 7/8 | 7/8 | 3/8 | 3/8 | 3/8 | 3/8 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
9,000 | 5/8 | 5/8 | 7/8 | 7/8 | 5/8 | 5/8 | 7/8 | 7/8 | 5/8 | 7/8 | 7/8 | 7/8 | 5/8 | 7/8 | 7/8 | 1- | 5/8 | 7/8 | 7/8 | 1- | 5/8 | 7/8 | 7/8 | 1- | 3/8 | 3/8 | 3/8 | 3/8 | |
1/8 | 1/8 | 1/8 | |||||||||||||||||||||||||||
12,000 | 5/8 | 7/8 | 7/8 | 7/8 | 5/8 | 7/8 | 7/8 | 7/8 | 7/8 | 7/8 | 7/8 | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 3/8 | 3/8 | 3/8 | 3/8 | |
1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | |||||||||||||||||||||||
15,000 | 5/8 | 7/8 | 7/8 | 7/8 | 7/8 | 7/8 | 7/8 | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 3/8 | 3/8 | 3/8 | 1/2 | |
1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | |||||||||||||||||||||
18,000 | 7/8 | 7/8 | 7/8 | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 7/8 | 1- | 1- | 7/8 | 1- | 1- | 1- | 7/8 | 1- | 1- | 1- | 7/8 | 1- | 1- | 1- | 3/8 | 3/8 | 1/2 | 1/2 | |
1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 3/8 | 1/8 | 1/8 | 3/8 | 1/8 | 1/8 | 3/8 | ||||||||||||||||
24,000 | 7/8 | 7/8 | 1- | 1- | 7/8 | 1- | 1- | 1- | 7/8 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 3/8 | 3/8 | 1/2 | 1/2 | |
1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | ||||||||||
30,000 | 7/8 | 7/8 | 1- | 1- | 7/8 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 3/8 | 1/2 | 1/2 | 1/2 | |
1/8 | 1/8 | 1/8 | 1/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | |||||||||
36,000 | 7/8 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 1/2 | 1/2 | |
1/8 | 1/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 3/8 | 3/8 | 3/8 | 1/8 | 3/8 | 3/8 | 5/8 | |||||||
42,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 1/2 | 5/8 | |
1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 1/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 3/8 | 5/8 | ||||||
48,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 5/8 | 5/8 | |
1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 1/8 | 3/8 | 5/8 | 1/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 1/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 3/8 | 5/8 | ||||||
54,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 5/8 | 5/8 | |
1/8 | 1/8 | 3/8 | 3/8 | 1/8 | 3/8 | 3/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | ||||||
60,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 5/8 | 5/8 | |
1/8 | 1/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | ||||||
66,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 1/2 | 5/8 | 5/8 | |
1/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | ||||||
72,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1/2 | 5/8 | 5/8 | 5/8 | |
1/8 | 3/8 | 5/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | ||||||
78,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 2- | 1- | 1- | 1- | 2- | 1- | 1- | 1- | 2- | 5/8 | 5/8 | 5/8 | 5/8 | |
1/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 5/8 | 3/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | ||||||
84,000 | 1- | 1- | 1- | 1- | 1- | 1- | 1- | 2- | 1- | 1- | 1- | 2- | 1- | 1- | 2- | 2- | 1- | 1- | 2- | 2- | 1- | 1- | 2- | 2- | 5/8 | 5/8 | 5/8 | 7/8 | |
1/8 | 3/8 | 5/8 | 5/8 | 3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | ||||||
90,000 | 1- | 1- | 1- | 2- | 1- | 1- | 1- | 2- | 1- | 1- | 2- | 2- | 1- | 1- | 2- | 2- | 1- | 2- | 2- | 2- | 1- | 1- | 2- | 2- | 5/8 | 5/8 | 7/8 | 7/8 | |
3/8 | 3/8 | 5/8 | 1/8 | 3/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | ||||||
120,000 | 1- | 1- | 2- | 2- | 1- | 1- | 2- | 2- | 1- | 2- | 2- | 2- | 1- | 2- | 2- | 2- | 1- | 2- | 2- | 2- | 1- | 2- | 2- | 2- | 5/8 | 5/8 | 7/8 | 7/8 | |
3/8 | 5/8 | 1/8 | 1/8 | 3/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | ||||||
150,000 | 1- | 1- | 2- | 2- | 1- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 5/8 | 7/8 | 7/8 | 7/8 | |
5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | ||||||
180,000 | 1- | 2- | 2- | 2- | 1- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 7/8 | 7/8 | 7/8 | 1- | |
5/8 | 1/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | |||||
210,000 | 1- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 3- | 2- | 2- | 2- | 3- | 2- | 2- | 2- | 3- | 2- | 2- | 2- | 3- | 7/8 | 7/8 | 1- | 1- | |
5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 1/8 | ||||
240,000 | 1- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 3- | 2- | 2- | 2- | 3- | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 7/8 | 7/8 | 1- | 1- | |
5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 1/8 | 1/8 | ||||
300,000 | 2- | 2- | 2- | 2- | 2- | 2- | 2- | 3- | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 7/8 | 1- | 1- | 1- | |
1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 1/8 | 1/8 | 3/8 | |||
360,000 | 2- | 2- | 2- | 3- | 2- | 2- | 2- | 3- | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 2- | 3- | 3- | 3- | 2- | 3- | 3- | 4- | 1- | 1- | 1- | 1- | |
1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 3/8 | 3/8 | ||
| |||||||||||||||||||||||||||||
480,000 | 2- | 2- | 3- | 3- | 2- | 2- | 2- | 3- | 2- | 3- | 3- | 3- | 2- | 3- | 3- | 3- | 3- | 3- | 4- | 4- | 3- | 3- | 4- | 4- | 1- | 1- | 1- | 1- | |
1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 5/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 1/8 | 3/8 | 5/8 | ||
| |||||||||||||||||||||||||||||
600,000 | 2- | 2- | 3- | 3- | 2- | 2- | 3- | 3- | 3- | 3- | 3- | 4- | 3- | 3- | 3- | 3- | 3- | 3- | 4- | 4- | 3- | 3- | 4- | 4- | 1- | 1- | 1- | 1- | |
5/8 | 5/8 | 1/8 | 5/8 | 5/8 | 5/8 | 1/8 | 5/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 5/8 | 5/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 5/8 | 1/8 | 1/8 | 1/8 | 3/8 | 5/8 | 5/8 | ||
|
*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 O.D. 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.
13