Sterling A0554831 manual 20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers

Page 52

20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers

Nominal operating parameters for water-cooled models are 50ºF (10ºC) leaving water temperature at 2.4 gpm per ton (9.1 lpm per 3.517 kW) with 85ºF (29ºC) tower water. For 50 Hz applications, multiply capacity by 0.83. Nominal 60 Hz capacity flow rate must be maintained.

 

Nominal cooling

Nominal

Com-

 

Condenser water

 

Power in amps g

 

 

capacity c tons

water

pres-

Nom.

Water

 

flow in gpm

 

460/3/60 h

 

HP

no

1

2

flow

sor

pump

conn.

 

Tower

City

1 pump

2 pumps

 

pump

pump

pump

gpm d

hp

hp

in. NPTwater e

water f

rated

running

rated

running

20

21.0

20.0

19.6

50.4

2 @ 10

5.0

2.0”

61.7

31.5

43.9

34.7

47.0

 

37.8

25

25.7

24.7

24.3

61.7

2 @ 13

5.0

2.0”

75.9

38.6

55.9

38.2

59.0

 

41.3

30

31.8

30.8

30.4

76.2

2 @ 15

5.0

2.5”

93.9

47.6

60.1

45.3

63.2

 

48.4

cBased on 50ºF (10ºC) chilled water supply temperature and 85ºF (29ºC) tower water. Optional additional process pump hp reduces chiller capacity by 0.2 tons per hp (0.703 kW ref. cap. per 0.746 kW pump power).

dBased on 2.4 gpm per ton (9.1 lpm per 3.517 kW), nominal 1 pump.

eBased on availability of 85ºF (29ºC) tower water at 25 psi (172.4 kPa/1.7 bars) minimum. f Based on availability of 70ºF (21ºC) city water at 25 psi (172.4 kPa/1.7 bars) minimum.

gAn optional oversized process pump adds to the total rated or running chiller amperage. To find the new total chiller amperage, subtract the standard process pump amperage from the optional pump amperage (see Figure 1

on page 16), and add it to the chiller rated or running amperage.

hMultiply 460/3/60 amperage by 2.0 for 208-230/3/60 amperages.

20 hp, 25 hp, and 30 hp water-cooled chillers come standard with 4” (101 mm) swivel casters.

 

Com-

Process connections, in. NPT

Dimensions

 

Weights

 

HP

pressor

1 pump

2 Pump

no pump,

1 pump, no

in inches c

 

Dry d

Ship. d

Oper. d e

 

hp

to/from

to/from

no tank

tank,

height

width

 

depth

lbs.

lbs.

 

lbs.

 

 

 

 

 

to/from

 

 

 

 

 

 

 

 

20

2 @ 10

2” / 3”

2.5” / 3”

2.0”

2” / 3”

45.3”

34.0”

 

100.7”

1,495

1,745

 

2,161

25

2 @ 13

2” / 3”

2.5” / 3”

2.0”

2” / 3”

45.3”

34.0”

 

100.7”

1,680

1,930

 

2,346

30

2 @ 15

2” / 3”

2.5” / 3”

2.0”

2” / 3”

45.3”

34.0”

 

100.7”

1,885

2,135

 

2,551

cTo convert to cm, multiply by 2.54. Add to height dimension based on mounting options.

dWeight is for standard chiller. Some optional features will increase weight. Multiply by 0.454 to calculate Kg. e Operating weight is with a full 80-gallon (303 liter) reservoir tank of water.

2-40 HP Portable Chillers

Chapter 7: Appendix

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Contents Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers How to Use This Manual SafetySafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves ResponsibilityFunctional Description Models Covered in This ManualChilled Water Circuit General DescriptionRefrigeration Circuit Mechanical Features Standard FeaturesOther Mechanical Features Electrical Features Refrigeration FeaturesController Features Other FeaturesSafety Devices and Interlocks High/Low Thermostat ControlCrankcase Heater High Pressure CutoutFan Cycling Switch Pressure SwitchFlow Switch Low Pressure CutoutOptional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Uncrating InstallationElectrical Connections Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment ConsiderationsWater-Cooled Chiller Condensers Condenser ConsiderationsAir-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Chiller Condenser Charge Field Installed Piping Charge Refrigerant Charge DeterminationThree-Phase Compressors Checking Motor DirectionWater Pumps Condenser FanWater Reservoir Part Number DescriptionEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Panel Buttons, Indicator Lights, and Switches E5CK Controller Indicator Name DescriptionOperation Microprocessor ControllersIndicator Name Description Sterlco 2000 Controller Indicator Name DescriptionE5CK See Figure Indicator Name Description Graphic PanelIndicator Name Description Typical Graphic Panels With E5CK Controller Eurotherm 3216 ControllerSetting the Process Water Temperatures Auto-TuningStart-up Optional CommunicationsThermostat Buttons Indicator Name Description Programming the Electronic High/Low ThermostatSelect Fahrenheit or Celsius Stage 2 High Temperature ProtectionStage 1 Freeze Protection Filter Cleaning MaintenanceLubrication Maintaining the Condenser Maintaining the EvaporatorEvaporator Process Piping Y-Strainer Air- and Remote Air-Cooled ChillersPreventative Maintenance Service Troubleshooting HP Portable Chillers TroubleshootingHP Portable Chillers Troubleshooting Warranty Returns AppendixReturned Material Policy Credit ReturnsService Department Technical AssistanceParts Department Sales DepartmentDrawings and Specifications Hp and 3 1/2 hp Air-Cooled Portable ChillersHp and 7.5 hp Air-Cooled Portable Chillers Hp and 15 hp Air-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers Hp and 3.5 hp Water-Cooled Portable Chillers Nominal Condenser water Nominal cooling Water ComIn. NPT Height Width Depth Lbs 28.3 22.0 41.7 28.3 22.0 41.7Hp and 7.5 hp Water-Cooled Portable Chillers Hp and 15 hp Water-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers 39.5 39.1 98.4 Hp Water-Cooled Portable Chillers81.9 63.1 85.0 66.2 Hp and 7.5 hp Remote Air-Cooled Portable Chillers Hp and 15 hp Remote Air-Cooled Portable Chillers Nominal cooling ComIn. dia. ODS Pump Pumps Discharge Liquid Rated Running 15.0 40.9 34.0 74.7Hp through 40 hp Remote Air-Cooled Portable Chillers Nominal cooling Com RefrigerationPres Nom Connections To/from No tank Tank, to/from Height Width Depth LbsRemote Condenser Assembly Models ‘A’in ‘B’in ‘C’in ‘D’in ODSinPump Curves, Flow, and Pressure Considerations Hertz Pump CurvesDWG. No. S0554823 Evaporator Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to ProcessRecirc. power Flow Rate Pressure Gpm Lpm Psi KPa Recirculation Pump SpecificationsEvaporator Flow and Pressure Considerations Remote Air-Cooled Chiller Configurations Typical Ductwork for Air-Cooled Chillers Piping Diagrams Central and Gravity Return Piping with Standpipe DiagramTypical Piping Schematic, 2 and 3 1/2 hp Models HP Portable Chillers Appendix HP Portable Chillers Appendix Typical Piping Schematic, 5 hp through 40 hp, No-Pump Models HP Portable Chillers Appendix Electrical Schematics Typical Electrical Subpanel

A0554831 specifications

The Sterling A0554831 is a versatile and powerful tool designed for a range of applications, particularly in the industrial and construction sectors. Known for its robust construction and reliability, it has gained popularity among professionals and DIY enthusiasts alike.

One of the main features of the Sterling A0554831 is its durable build quality, which is designed to withstand harsh working conditions. The device typically features a high-strength casing that protects it from dust, moisture, and impact, ensuring longevity even in the most demanding environments. Its ergonomic design allows for comfortable handling, minimizing user fatigue during extended use.

In terms of performance, the Sterling A0554831 is equipped with advanced technologies that enhance its efficiency and functionality. The device is powered by a high-torque motor, delivering impressive power that enables it to tackle heavy-duty tasks with ease. The precision-engineered components ensure consistent performance, making it ideal for tasks that require accuracy and reliability.

Another significant characteristic of the Sterling A0554831 is its versatility. It typically comes with multiple settings and modes, allowing users to adjust the tool according to the specific requirements of their project. Whether drilling, cutting, or fastening, the tool can accommodate various tasks, making it a valuable addition to any toolkit.

Safety features are also a priority with the Sterling A0554831. Many models are equipped with overload protection and safety switches that prevent accidental activation, safeguarding the user during operation. Additionally, some variants may include LED indicators that provide real-time information about battery life or operational status, enhancing overall user experience.

In conclusion, the Sterling A0554831 stands out in the market for its combination of durability, performance, and versatility. With advanced technologies that cater to a wide range of applications and a design focused on user comfort and safety, this tool is an excellent choice for professionals looking for dependable and effective solutions in their work. Whether you are a seasoned professional or a casual DIYer, the Sterling A0554831 is well-equipped to handle your needs with ease and efficiency.
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