Heatcraft Refrigeration Products H-ENGM0408 Line Sizing, Recommended Line Sizes for R-134a, +30˚F

Page 25

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.

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Contents Engineering Manual Forward Table of ContentsWall heat loads Insulated block K factors TablesOpenings and infiltration Refrigeration Load Calculations Job SurveyAir Change Load Safety FactorProduct Load Daily figureHourly Heat Load Temperature above 32ºF 20-22 hrLoad Calculation Forms 50ºF. rooms and higher with coilExample 35ºF Convenience Store Cooler With Glass Doors Example 35ºF Beef Cooler Inches Type Ceiling Walls Floor Example -20ºF Ice Cream Hardening Freezer Example -10ºF Beef Freezer Gallons of ice cream @ Overrun Wall Heat Loads Appendix TablesEffective K Factor in Block Thickness of Insulation Allowance for Sun EffectFor long storage multiply the above values by VolumeStorage Room 40ºF .4ºC 50ºF ºCNot based on maintaining nutritional value Storage requirements and properties of perishable productsMaple Sugar Heat of Respiration Approx BTU / LB. / 24 Hrs Storage Temperature Degree F ProductºF. Other BTU / 24 HR Heat gain due to operation of battery operated lift truckHeat equivalent of electric motors Heat equivalent of OccupancyBanana Rooms Refrigeration Requirements Banana Ripening RoomRapid load selection for back bars Refrigeration requirements for hardening ice creamDesign Summer outside air and ground temperature design conditionsDry Bulb Temp State CityProduct Safety/Capacity Control Temperature DifferenceRefrigeration Equipment Selection Equipment BalanceType of Operation/Air Flow Derating FactorsRecommended Air Changes/Hour Effects of Altitude on Air Cooled EquipmentGeneral Guidelines Left Large cooler or freezer Right Unit Cooler Recommended Coil ReplacementLeft Cooler or freezer with glass display doors Right Recommended Line Sizes for R-134a Line Sizing+30˚F 150 200 10021/8 Expansion ValveEquivalent Lengths Recommended Line Sizes for R-22100 150 200 200 100 Receiver toRecommended Line Sizes for R-404A and R-507 30˚F 40˚F Recommended Line Sizes for R-404A and R-507Equivalent Feet of Pipe Due to Valve and Fitting Friction 134a R507 & R-404A Liquid Line Net Recommended Remote Condenser Line SizesRefrigerant Celsius Fahrenheit Celsius Temperature Conversion ChartFahrenheit Celsius FahrenheitConversion Factors constant Single Phase Loads Ohm’s Law for direct currentAir Coils = WattsEnglish to Metric Conversion Factors English Conversion Factors & DataDefinitions Use of the Psychrometric ChartSR/lb dry air 7000Atmospheric Pressure Appendix ChartsAt other altitude Courtesy of Ashrae Reproduced by permissionCourtesy of Ashrae Reproduced by permission Glossary of Refrigeration Terms Quick Selection Guide DimensionBtuh Load +35 Room +30 Room FloorTips for Quick Selection Guide Rapid Load Calculator for Large Coolers and Freezers Heatcraft Refrigeration Products LLC

H-ENGM0408, H-ENGM0806 specifications

Heatcraft Refrigeration Products offers a diverse range of commercial refrigeration solutions designed to meet various operational needs. Among their notable offerings are the H-ENGM0806 and H-ENGM0408 models, which stand out for their efficiency and innovative features.

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.

Meanwhile, the H-ENGM0408 model is designed for medium-sized applications that require flexibility without compromising on performance. This unit features a compact design, making it an excellent choice for businesses with limited space. Its energy-efficient compressor reduces operational costs, and its user-friendly digital controls allow for easy temperature adjustments and monitoring. The H-ENGM0408 is engineered to operate in various ambient conditions, ensuring reliability and consistent performance regardless of the environment.

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.

In conclusion, Heatcraft's H-ENGM0806 and H-ENGM0408 models combine efficiency, flexibility, and advanced technology to provide reliable refrigeration solutions. Their thoughtful design and robust features make them ideal choices for businesses looking to maintain optimal temperature control while minimizing energy consumption and operational costs.
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