Sterling 882.93092.00 specifications Water-Cooled Portable Chillers, PWC-20

Page 44

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.

G-PWC-20

PERFORMANCE (NOMINAL DESIGN CONDITIONS, 60 HZ)

COOLING CAPACITY

5.12

 

TONS

ALTITUDE

 

SEA LEVEL

 

COOLANT SUPPLY TEMPERATURE

50

 

°F

COMPRESSOR POWER

 

4064

 

WATTS

CONDENSER INLET WATER

85

 

°F

EER

 

15.13

 

BTU/WATT

TEMPERATURE

 

 

 

 

 

 

 

 

 

 

 

COOLANT

WATER

 

CONDENSER WATER FLOW

 

15.9

 

GPM

COOLANT FLOW

13

 

GPM

SOUND POWER LEVEL

 

 

 

dBA

UNIT PRESSURE DROP

7

 

PSID

SOUND PRESSURE LEVEL @ 1 METER

 

 

dBA

OPERATING PARAMETERS

 

 

 

 

 

 

 

 

COOLANT SUPPLY TEMPERATURE

20-80

 

°F

COOLANT FLOW

 

15

 

GPM

CONDENSER INLET WATER

50-90

 

°F

MINIMUM LOAD

 

1.06

 

TONS

TEMPERATURE

 

 

 

 

 

 

 

 

 

 

 

SPECIFICATIONS

 

 

 

 

 

 

 

 

COMPRESSOR

SCROLL

 

 

EVAPORATOR FILTER

 

20 MESH

 

COOLANT PUMP

STAINLESS STEEL

 

COOLANT CIRCUIT

 

NON-FERROUS

 

CENTRIFUGAL

 

 

 

 

 

 

 

 

 

 

EVAPORATOR

BRAZED PLATE

 

CAPACITY CONTROL

 

HOT GAS BYPASS

CONDENSER

TUBE IN TUBE

 

REFRIGERANT

 

3 LBS R-410A

 

 

 

 

 

FRAME

 

GALVANIZED STEEL

 

 

 

 

PANELS

 

POWDER COATED STEEL

RESERVOIR

20 GALLON POLYETHYLENE

WEIGHT (OPERATING)

 

690

 

LBS

POWER

460V/3PH/60HZ

 

WEIGHT (SHIPPING)

 

520

 

LBS

CONTROL CIRCUIT

120

 

VDC

ELECTRICAL ENCLOSURE

 

NEMA 12

 

COMPRESSOR FULL LOAD AMPS

10.7

 

AMPS

CONTROL

 

MICROPROCESSOR

G-PWC-30

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY

7.98

TONS

ALTITUDE

 

 

SEA LEVEL

COOLANT SUPPLY TEMPERATURE

50

°F

COMPRESSOR POWER

6416

 

WATTS

CONDENSER INLET WATER

85

°F

EER

14.92

 

BTU/WATT

TEMPERATURE

 

 

 

 

 

 

 

COOLANT

WATER

 

CONDENSER WATER FLOW

25.08

 

GPM

COOLANT FLOW

20

GPM

SOUND POWER LEVEL

 

 

dBA

UNIT PRESSURE DROP

7

PSID

SOUND PRESSURE LEVEL @ 1

dBA

 

METER

 

 

 

 

 

 

 

 

 

OPERATING PARAMETERS

 

 

 

COOLANT SUPPLY TEMPERATURE

20-80

°F

COOLANT FLOW

22.5

 

GPM

CONDENSER INLET WATER

50-90

°F

MINIMUM LOAD

1.672

 

TONS

TEMPERATURE

 

 

 

 

 

 

 

 

 

SPECIFICATIONS

 

 

 

COMPRESSOR

SCROLL

 

EVAPORATOR FILTER

20 MESH

 

COOLANT PUMP

STAINLESS STEEL

COOLANT CIRCUIT

NON-FERROUS

 

CENTRIFUGAL

 

 

 

 

 

 

 

 

EVAPORATOR

BRAZED PLATE

 

CAPACITY CONTROL

HOT GAS BYPASS

CONDENSER

TUBE IN TUBE

 

REFRIGERANT

4 LBS R-410A

 

 

 

 

FRAME

GALVANIZED STEEL

 

 

 

PANELS

POWDER COATED STEEL

RESERVOIR

20 GALLON POLYETHYLENE

WEIGHT (OPERATING)

870

 

LBS

POWER

460V/3PH/60HZ

 

WEIGHT (SHIPPING)

700

 

LBS

CONTROL CIRCUIT

120

VDC

ELECTRICAL ENCLOSURE

NEMA 12

 

COMPRESSOR FULL LOAD AMPS

16.4

AMPS

CONTROL

MICROPROCESSOR

GP Series Portable Chillers

Chapter 7: Appendix

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Image 44
Contents GP Series Portable Chillers Shipping Information Table of Contents Operation Safety Symbols Used in this Manual SafetyHow to Use This Manual Responsibility Functional Description Models Covered in This ManualGeneral Description Chilled Water CircuitElectrical Features Standard FeaturesMechanical Features Safety Devices and Interlocks Refrigeration FeaturesController Features Other FeaturesOptional Features Flow SwitchHigh Pressure Cutout Remote Start/Stop InterlockMounting Features Optional Pump Amperages Voltage Construction Full Load Amps Electrical Connections InstallationUncrating Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment ConsiderationsAir-Cooled Chiller Condensers Condenser ConsiderationsWater-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Equivalent Length in Feet for Valves and Fittings Discharge Line Sizing Refrigerant Charge Determination Three-Phase Compressors Checking Motor DirectionWater Pumps Condenser FanWater Reservoir Part Number DescriptionPump Initial Start-Up Finishing Setup Setting Up PasswordsAutomatic Water Make-Up Option Page Page Microprocessor Controller Panel Buttons, Indicator Lights, and SwitchesOperation Main Status Screen Operator Setpoints Screen Status Screens GP Series Portable Chillers Operation Access Levels Controller Setpoints Menu Screen Alarms Optional CommunicationsGP Series Portable Chillers Operation Maintenance Filter CleaningLubrication Maintaining the CondenserEvaporator Process Piping Y-Strainer Preventative Maintenance ServiceMaintaining the Evaporator Troubleshooting GP Series Portable Chillers TroubleshootingGP Series Portable Chillers Troubleshooting Warranty Returns AppendixReturned Material Policy Credit ReturnsService Department Technical AssistanceParts Department Sales DepartmentSpecifications Air-Cooled Portable ChillersPAC-40 Water-Cooled Portable Chillers PWC-20PWC-40 Pump Curves, Flow, and Pressure Considerations Hertz Pump CurvesALL 50 Hz Capacity liter/minCalculating Chiller Nominal Flow and Pressure to Process Remote Air-Cooled Chiller Configurations Typical Ductwork for Air-Cooled Chillers Page GP Series Portable Chillers Appendix Piping Diagrams GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix
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882.93092.00 specifications

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