Sterling GP Series specifications Specifications, Air-Cooled Portable Chillers

Page 38

7-3 Specifications

Air-Cooled Portable Chillers

Nominal operating parameters for air-cooled models are 50ºF (10ºC) leaving water temperature at 2.4 gpm per ton (9.1 lpm per 3.517 kW) with 95ºF (35ºC) ambient air. For 50 Hz applications, multiply capacity by 0.83. Nominal 60 Hz capacity flow rate must be maintained.

G-PAC-20

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY

4.72

TONS

ALTITUDE

 

 

 

SEA LEVEL

COOLANT SUPPLY TEMPERATURE

50

°F

COMPRESSOR POWER

 

4976

 

WATTS

 

 

 

 

 

 

 

 

AMBIENT AIR TEMPERATURE

95

°F

EER

 

11.39

 

BTU/WATT

 

 

 

 

 

 

 

 

COOLANT

WATER

 

CONDENSER AIR FLOW

 

4230

 

CFM

COOLANT FLOW

11

GPM

SOUND POWER LEVEL

 

86

 

dBA

 

 

 

 

 

 

 

 

UNIT PRESSURE DROP

7

PSID

SOUND PRESSURE LEVEL @ 1 METER

 

 

dBA

 

 

 

 

 

 

 

 

 

OPERATING

PARAMETERS

 

 

 

COOLANT SUPPLY TEMPERATURE

20-80

°F

COOLANT FLOW

 

 

 

GPM

AMBIENT AIR TEMPERATURE

60-115

°F

MINIMUM LOAD

 

0.944

 

TONS

 

 

 

 

 

 

 

 

 

 

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

ALUMINUM

 

REFRIGERANT

 

3 LBS R-410A

 

CONDENSER FANS

24 INCH

 

FRAME

 

GALVANIZED STEEL

AXIAL

 

 

 

 

 

 

 

 

 

CONDENSER FAN MOTOR

1/2 HP OAO, 1140 RPM

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-PAC-30

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY

7.52

TONS

ALTITUDE

 

 

 

 

SEA LEVEL

 

 

 

 

 

 

 

 

 

COOLANT SUPPLY TEMPERATURE

50

°F

COMPRESSOR POWER

 

7634

 

 

WATTS

AMBIENT AIR TEMPERATURE

95

°F

EER

 

11.82

 

 

BTU/WATT

COOLANT

WATER

 

CONDENSER AIR FLOW

 

6343

 

 

CFM

 

 

 

 

 

 

 

 

 

COOLANT FLOW

18

GPM

SOUND POWER LEVEL

 

92

 

 

dBA

UNIT PRESSURE DROP

7

PSID

SOUND PRESSURE LEVEL @ 1 METER

 

 

 

dBA

 

 

 

 

 

 

 

 

 

 

OPERATING

PARAMETERS

 

 

 

 

COOLANT SUPPLY TEMPERATURE

20-80

°F

COOLANT FLOW

 

 

 

 

GPM

 

 

 

 

 

 

 

 

 

AMBIENT AIR TEMPERATURE

60-115

°F

MINIMUM LOAD

 

1.504

 

 

TONS

 

 

 

 

 

 

 

 

 

 

 

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

ALUMINUM

 

REFRIGERANT

 

4 LBS R-410A

 

 

 

 

 

 

 

 

 

 

CONDENSER FANS

24 INCH

 

FRAME

 

GALVANIZED STEEL

AXIAL

 

 

 

 

 

 

 

 

 

 

CONDENSER FAN MOTOR

1 HP OAO, 1140 RPM

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

38 of 44

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Contents GP Series Portable Chillers Shipping Information Table of Contents Maintenance Safety Symbols Used in this Manual SafetyHow to Use This Manual Responsibility General Description Functional DescriptionModels Covered in This Manual Chilled Water CircuitElectrical Features Standard FeaturesMechanical Features Controller Features Safety Devices and InterlocksRefrigeration Features Other FeaturesHigh Pressure Cutout Optional FeaturesFlow Switch Remote Start/Stop InterlockMounting Features Optional Pump Amperages Voltage Construction Full Load Amps Electrical Connections InstallationUncrating Galvanic Corrosion Considerations Process Water ConnectionsBypass Valve Considerations Water Treatment ConsiderationsAir-Cooled Chiller Condensers Condenser ConsiderationsWater-Cooled Chiller Condensers Water Pumps Three-Phase CompressorsChecking Motor Direction Condenser FanWater Reservoir Part Number DescriptionEthylene Glycol and Propylene Glycol Curves 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 Access Levels Page Controller Setpoints Menu Screen Alarms Optional CommunicationsGP Series Portable Chillers Operation Lubrication MaintenanceFilter Cleaning Maintaining the CondenserEvaporator Process Piping Y-Strainer Preventative Maintenance ServiceMaintaining the Evaporator Troubleshooting GP Series Portable Chillers TroubleshootingGP Series Portable Chillers Troubleshooting Returned Material Policy Warranty ReturnsAppendix Credit ReturnsParts Department Service DepartmentTechnical Assistance Sales DepartmentSpecifications Air-Cooled Portable ChillersPAC-40 Water-Cooled Portable Chillers PWC-20PWC-50 Pump Curves, Flow, and Pressure Considerations Hertz Pump CurvesCalculating Chiller Nominal Flow and Pressure to Process Electrical Schematic