Line Sizing

The following Tables 22 through 24A on pages 25 through 30 indicate liquid lines and suction lines for all condensing units for R-22, R-404A, R-134a, and R-507.

When determining the refrigerant line length, be sure to add an allowance for fittings. See Table 26 on page 31. Total equivalent length of refrigerant lines is the sum of the actual linear footage and the allowance for fittings.

Table 22. Recommended Line Sizes for R-134a *

 

 

 

 

 

 

 

 

 

 

 

SUCTION LINE SIZE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUCTION TEMPERATURE

 

 

 

 

 

 

 

 

 

SYSTEM

 

 

 

+40˚F

 

 

 

 

 

 

 

 

+30˚F

 

 

 

 

 

 

+20˚F

 

 

 

CAPACITY

 

 

Equivalent Lengths

 

 

 

 

 

Equivalent Lengths

 

 

 

 

Equivalent Lengths

 

 

BTU/H

25'

50'

 

75'

 

100'

 

150'

200'

25'

 

50'

75'

100'

150'

200'

25'

50'

75'

100'

150'

200'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1,000

3/8

3/8

 

3/8

 

3/8

 

3/8

1/2

3/8

 

3/8

3/8

3/8

1/2

1/2

3/8

1/2

1/2

1/2

1/2

5/8

3,000

3/8

1/2

 

1/2

 

1/2

 

5/8

5/8

1/2

 

 

1/2

1/2

5/8

5/8

5/8

1/2

5/8

5/8

7/8

7/8

7/8

4,000

1/2

1/2

 

5/8

 

5/8

 

5/8

5/8

1/2

 

1/2

5/8

5/8

5/8

7/8

5/8

5/8

7/8

7/8

7/8

7/8

6,000

1/2

5/8

 

5/8

 

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

9,000

5/8

5/8

 

7/8

 

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

7/8

1 1/8

12,000

5/8

7/8

 

7/8

 

7/8

 

7/8

7/8

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

15,000

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

7/8

7/8

7/8

1 1/8

1 1/8

1 1/8

18,000

7/8

7/8

 

7/8

 

7/8

 

1 1/8

1 1/8

7/8

 

7/8

1 1/8

1 1/8

1 1/8

1 1/8

7/8

7/8

1 1/8

1 1/8

1 1/8

1 3/8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24,000

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 3/8

1 3/8

7/8

1 1/8

1 1/8

1 1/8

1 3/8

1 3/8

30,000

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

1 1/8

1 1/8

1 1/8

1 3/8

1 3/8

1 3/8

36,000

7/8

1 1/8

 

1 1/8

 

1 1/8

 

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 1/8

1 3/8

1 3/8

1 5/8

1 5/8

42,000

1 1/8

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 5/8

1 5/8

1 1/8

1 3/8

1 3/8

1 3/8

1 5/8

1 5/8

48,000

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

1 1/8

1 3/8

1 5/8

1 5/8

1 5/8

1 5/8

54,000

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

1 1/8

1 3/8

1 5/8

1 5/8

1 5/8

2 1/8

60,000

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 3/8

1 3/8

1 5/8

1 5/8

2 1/8

2 1/8

66,000

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 3/8

1 5/8

1 5/8

1 5/8

2 1/8

2 1/8

72,000

1 1/8

1 3/8

 

1 5/8

 

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 3/8

1 5/8

2 1/8

2 1/8

2 1/8

2 1/8

78,000

1 1/8

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 3/8

1 5/8

2 1/8

2 1/8

2 1/8

2 1/8

84,000

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 3/8

1 5/8

2 1/8

2 1/8

2 1/8

2 1/8

90,000

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 3/8

1 5/8

2 1/8

2 1/8

2 1/8

2 1/8

120,000

1 3/8

1 5/8

 

2 1/8

 

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

150,000

1 5/8

2 1/8

 

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

2 1/8

2 1/8

2 5/8

2 5/8

2 5/8

2 5/8

180,000

1 5/8

2 1/8

 

2 1/8

 

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

210,000

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 5/8

2 5/8

2 5/8

 

3 1/8

2 1/8

2 1/8

2 5/8

2 5/8

3 1/8

3 1/8

240,000

2 1/8

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

2 1/8

2 5/8

2 5/8

2 5/8

3 1/8

3 1/8

300,000

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

2 1/8

2 5/8

3 1/8

3 1/8

3 1/8

3 5/8

360,000

2 1/8

2 5/8

 

2 5/8

 

2 5/8

 

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

3 1/8

3 5/8

3 5/8

4 1/8

4 1/8

480,000

2 5/8

2 5/8

 

3 1/8

 

3 18

 

3 1/8

3 5/8

2 5/8

 

3 1/8

3 1/8

3 1/8

3 5/8

 

3 5/8

3 1/8

3 5/8

3 5/8

4 1/8

5 1/8

5 1/8

600,000

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 1/8

3 5/8

3 5/8

4 1/8

3 1/8

3 5/8

4 1/8

4 1/8

5 1/8

5 1/8

*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.Consult factory for R-134a operation at winter conditions below 0° ambient. Heated and insulated receiver required below 0° ambient.

If system load drops below 40% of design, consideration to installing double suction risers should be made.

25

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Image 25
Heatcraft Refrigeration Products H-ENGM0408, H-ENGM0806 Line Sizing, Recommended Line Sizes for R-134a, +30˚F, 150 200 100
Page 24 Page 26

H-ENGM0408, H-ENGM0806 specifications

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The H-ENGM0806 model boasts a robust construction and high-performance capabilities, making it ideal for large-scale refrigeration requirements. This model is engineered with an advanced compressor that provides powerful cooling while maintaining energy efficiency. The unit operates at low sound levels, making it suitable for environments where noise reduction is essential, such as restaurants and grocery stores. Additionally, the H-ENGM0806 incorporates a reliable fan system designed to ensure optimal air circulation, promoting even cooling throughout the refrigerated space.

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Both models feature a state-of-the-art microprocessor control system that allows for precise temperature management. These systems not only optimize performance but also enhance the longevity of the refrigeration units. The H-ENGM0806 and H-ENGM0408 come with a robust evaporator coil design, facilitating rapid cooling and reducing the downtime associated with equipment maintenance.

In terms of durability, both products are constructed with high-quality materials resistant to corrosion and wear, making them suitable for demanding commercial environments. Additionally, they comply with industry standards and regulations, ensuring safety and reliability in operation.

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