Liquid Line Size

Parallel Compressor Systems

Table 5B. Recommended Line Sizes for R-404A/R-507 (continued)*

Suction Line Size

Suction Temperature

Receiver to

System

-20˚F

-30˚F

-40˚F

Expansion Valve

Capacity

Lengths

Equivalent Lengths

BTU/H

100’

150’

200’

25’

50’

75’

100’

150’

200’

25’

50’

75’

100’

150’

200’

25’

50’

75’

100’

150’

200’

1/2

3/8

1/2

5/8

3/8

1/2

5/8

3/8

1,000

5/8

7/8

1/2

5/8

7/8

1/2

5/8

7/8

3/8

3,000

7/8

5/8

7/8

1/2

5/8

7/8

3/8

4,000

7/8

5/8

7/8

5/8

7/8

1-1/8

3/8

6,000

7/8

1-1/8

5/8

7/8

1-1/8

5/8

7/8

1-1/8

3/8

9,000

1-1/8

7/8

1-1/8

7/8

1-1/8

3/8

1/2

12,000

1-1/8

1-3/8

7/8

1-1/8

1-3/8

7/8

1-1/8

1-3/8

3/8

1/2

15,000

1-1/8

1-3/8

7/8

1-1/8

1-3/8

7/8

1-1/8

1-3/8

3/8

1/2

18,000

1-3/8

1-1/8

1-3/8

1-1/8

1-3/8

3/8

1/2

24,000

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

3/8

1/2

30,000

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

1/2

5/8

36,000

1-5/8

1-1/8

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

1/2

5/8

42,000

1-5/8

1-1/8

1-3/8

1-5/8

1-1/8

1-3/8

1-5/8

1/2

5/8

48,000

1-5/8

1-3/8

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1/2

5/8

54,000

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1/2

5/8

60,000

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1/2

5/8

66,000

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1-3/8

1-5/8

2-1/8

1/2

5/8

72,000

1-5/8

2-1/8

1-5/8

2-1/8

1-5/8

2-1/8

5/8

7/8

78,000

2-1/8

1-5/8

2-1/8

1-5/8

2-1/8

5/8

7/8

84,000

2-1/8

2-5/8

1-5/8

2-1/8

2-5/8

1-5/8

2-1/8

2-5/8

5/8

7/8

90,000

2-1/8

2-5/8

1-5/8

2-1/8

2-5/8

1-5/8

2-1/8

2-5/8

5/8

7/8

120,000

2-5/8

2-1/8

2-5/8

2-1/8

2-5/8

5/8

7/8

1-1/8

150,000

2-5/8

3-1/8

2-1/8

2-5/8

3-1/8

2-1/8

2-5/8

3-1/8

7/8

1-1/8

180,000

2-5/8

3-1/8

2-1/8

2-5/8

3-1/8

2-1/8

2-5/8

3-1/8

7/8

1-1/8

210,000

2-5/8

3-1/8

2-5/8

3-1/8

3-5/8

2-5/8

3-1/8

3-5/8

7/8

1-1/8

1-3/8

240,000

3-1/8

3-5/8

2-5/8

3-1/8

3-5/8

4-1/8

2-5/8

3-1/8

3-5/8

4-1/8

7/8

1-1/8

1-3/8

300,000

3-5/8

4-1/8

2-5/8

3-1/8

3-5/8

4-1/8

2-5/8

3-1/8

3-5/8

4-1/8

1-1/8

1-3/8

1-5/8

360,000

3-5/8

4-1/8

3-1/8

3-5/8

4-1/8

3-1/8

3-5/8

4-1/8

1-1/8

1-3/8

1-5/8

480,000

3-5/8

4-1/8

3-1/8

3-5/8

4-1/8

5-1/8

3-1/8

3-5/8

4-1/8

5-1/8

1-1/8

1-3/8

1-5/8

600,000

5-1/8

4-1/8

5-1/8

6-1/8

4-1/8

5-1/8

6-1/8

1-1/8

1-3/8

1-5/8

2-1/8

720,000

5-1/8

4-1/8

5-1/8

6-1/8

5-1/8

6-1/8

1-3/8

1-5/8

2-1/8

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

Parallel Compressor Systems Installation & Operations Manual, October 2004

Heatcraft Refrigeration Products 25000102 Liquid Line Size, Expansion Valve, Lengths

Models: 25000102

Parallel Compressor Systems

Table 5B. Recommended Line Sizes for R-404A/R-507 (continued)*

Liquid Line Size

Expansion Valve

Lengths

100’

150’

200’

25’

100’

150’

200’

50’

75’

100’

150’

200’

25’

200’