Sterling 882.93092.00 G-PWC-50

GP Series Portable Chillers Chapter 7: Appendix 45 of 64

G-PWC-40

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY 10.94 TONS ALTITUDE SEA LEVEL

COOLANT SUPPLY TEMPERATURE 50 °F COMPRESSOR POWER 8450 WATTS

CONDENSER INLET WATER

TEMPERATURE 85 °F EER 15.53 BTU/WATT

COOLANT WATER CONDENSER WATER FLOW 33.93 GPM

COOLANT FLOW 27 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 30 GPM

CONDENSER INLET WATER

TEMPERATURE 50-90 °F MINIMUM LOAD 2.262 TONS

SPECIFICATIONS

COMPRESSOR SCROLL EVAPORATOR FILTER 20 MESH

COOLANT PUMP STAINLESS STEEL

CENTRIFUGAL COOLANT CIRCUIT NON-FERROUS

EVAPORATOR BRAZED PLATE CAPACITY CONTROL HOT GAS BYPASS

CONDENSER TUBE IN TUBE REFRIGERANT 6 LBS R-410A

FRAME GALVANIZED STEEL

PANELS POWDER COATED STEEL

RESERVOIR 40 GALLON POLYETHYLENE WEIGHT (OPERATING) 1090 LBS

POWER 460V/3PH/60HZ WEIGHT (SHIPPING) 760 LBS

CONTROL CIRCUIT 120 VDC ELECTRICAL ENCLOSURE NEMA 12

COMPRESSOR FULL LOAD AMPS 20 AMPS CONTROL MICROPROCESSOR

G-PWC-50

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY 16.66 TONS ALTITUDE SEA LEVEL

COOLANT SUPPLY TEMPERATURE 50 °F COMPRESSOR POWER 12778 WATTS

CONDENSER INLET WATER

TEMPERATURE 85 °F EER 15.65 BTU/WATT

COOLANT WATER CONDENSER WATER FLOW 50.28 GPM

COOLANT FLOW 40 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 45 GPM

CONDENSER INLET WATER

TEMPERATURE 50-90 °F MINIMUM LOAD 3.352 TONS

SPECIFICATIONS

COMPRESSOR SCROLL EVAPORATOR FILTER 20 MESH

COOLANT PUMP STAINLESS STEEL

CENTRIFUGAL COOLANT CIRCUIT NON-FERROUS

EVAPORATOR BRAZED PLATE CAPACITY CONTROL HOT GAS BYPASS

CONDENSER TUBE IN TUBE REFRIGERANT 8 LBS R-410A

FRAME GALVANIZED STEEL

PANELS POWDER COATED STEEL

RESERVOIR 40 GALLON POLYETHYLENE WEIGHT (OPERATING) 1290 LBS

POWER 460V/3PH/60HZ WEIGHT (SHIPPING) 950 LBS

CONTROL CIRCUIT 120 VDC ELECTRICAL ENCLOSURE NEMA 12

COMPRESSOR FULL LOAD AMPS 30 AMPS CONTROL MICROPROCESSOR

Contents

Main GP Series Portable Chillers Shipping Information Table of Contents CHAPTER 1: SAFETY................................................................ 5 CHAPTER 2: FUNCTIONAL DESCRIPTION............................. 7 CHAPTER 3: INSTALLATION..................................................13 CHAPTER 4: OPERATION.......................................................26 CHAPTER 5: MAINTENANCE ................................................. 36 Chapter 1: Safety 1-1 How to Use This Manual 1-2 Warnings and Precautions 1-3 Responsibility Chapter 2: Functional Description 2-1 Models Covered in This Manual 2-2 General Description 2-3 Standard Features 2-4 Safety Devices and Interlocks 2-5 Optional Features Page Page Chapter 3: Installation 3-1 Uncrating 3-2 Electrical Connections 3-3 Process Water Connections 3-4 Bypass Valve Considerations 3-5 Galvanic Corrosion Considerations 3-6 Water Treatment Considerations 3-7 Condenser Considerations Page Page GP Series Portable Chillers Chapter 3: Installation 18 of 64 Figure 4: Discharge Line Sizing Page 3-8 Checking Motor Direction 3-9 Water Reservoir GP Series Portable Chillers Chapter 3: Installation 22 of 64 Figure 6: Ethylene Glycol and Propylene Glycol Curves 3-10 Automatic Water Make-Up Option 3-11 Initial Start-Up 3-12 Finishing Setup: Setting Up Passwords Page Page Chapter 4: Operation 4-1 Panel Buttons, Indicator Lights, and Switches 4-2 Initial Start-up Page 4-3 Status Screens Page 4-4 Access Levels GP Series Portable Chillers Chapter 4: Operation 32 of 64 4-5 Controller Setpoints Page 4-6 Alarms 4-7 Optional Communications Page Chapter 5: Maintenance 5-1 Lubrication 5-2 Filter Cleaning 5-3 Maintaining the Condenser 5-4 Maintaining the Evaporator 5-5 Evaporator Process Piping Y-Strainer 5-6 Preventative Maintenance Service GP Series Portable Chillers Chapter 6: Troubleshooting 38 of 64 Chapter 6: Troubleshooting GP Series Portable Chillers Chapter 6: Troubleshooting 39 of 64 GP Series Portable Chillers Chapter 7: Appendix 40 of 64 Chapter 7: Appendix 7-1 Returned Material Policy Credit Returns 7-2 Technical Assistance GP Series Portable Chillers Chapter 7: Appendix 42 of 64 7-3 Specifications Air-Cooled Portable Chillers G-PAC-20 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PAC-30 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PAC-40 G-PAC-50 GP Series Portable Chillers Chapter 7: Appendix 44 of 64 Water-Cooled Portable Chillers G-PWC-20 PERFORMANCE (NOMINAL DESIGN CONDITIONS, 60 HZ) G-PWC-30 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PWC-50 PERFORMANCE (NOMINAL DESIGN CONDITIONS) GP Series Portable Chillers Chapter 7: Appendix 46 of 64 7-4 Pump Curves, Flow, and Pressure Considerations 60 Hertz Pump Curves GP Series Portable Chillers Chapter 7: Appendix 47 of 64 50 Hertz Pump Curves Page Page 7-6 Typical Ductwork for Air-Cooled Chillers Page Page 7-8 Piping Diagrams