Owner manual

GC Series Central Chillers iii
TABLE OF CONTENTS
CHAPTER 1:! SAFETY ................................................................ 5!
1-1! How to Use This Manual .............................................................................................. 5!
Safety Symbols Used in this Manual ..................................................................... 5!
1-2! Warnings and Precautions ........................................................................................... 6!
1-3! Responsibility ............................................................................................................... 6!
CHAPTER 2:! FUNCTIONAL DESCRIPTION ............................. 7!
2-1! Models Covered in This Manual .................................................................................. 7!
2-2! General Description ..................................................................................................... 7!
Typical Applications ............................................................................................... 7!
System Limitations ................................................................................................ 7!
Chilled Water Circuit .............................................................................................. 8!
Refrigeration Circuit ............................................................................................... 8!
2-3! Standard Features ..................................................................................................... 11!
Mechanical Features ........................................................................................... 11!
Electrical Features ............................................................................................... 11!
Refrigeration Features ......................................................................................... 11!
Controller Features .............................................................................................. 12!
Other Features .................................................................................................... 12!
2-4! Safety Devices and Interlocks .................................................................................... 12!
Crankcase Heater ............................................................................................... 12!
High Pressure Cutout .......................................................................................... 13!
Pressure Transducers ......................................................................................... 13!
Flow Switch ......................................................................................................... 14!
Remote Start/Stop Interlock ................................................................................ 14!
2-5! Optional Features ...................................................................................................... 14!
CHAPTER 3:! INSTALLATION .................................................. 16!
3-1! Uncrating .................................................................................................................... 16!
3-2! Rigging and Equipment Movement ............................................................................ 16!
3-3! Electrical Connections ............................................................................................... 16!
3-3! Process Water Connections ...................................................................................... 17!
3-4! Galvanic Corrosion Considerations ........................................................................... 17!
3-5! Water Treatment Considerations ............................................................................... 17!
3-6! Condenser Considerations ........................................................................................ 18!
Water-Cooled Chiller Condensers ....................................................................... 18!
Remote Air-Cooled Chiller Condensers .............................................................. 19!
3-7! Checking Motor Direction ........................................................................................... 25!
Three-Phase Compressors ................................................................................. 25!
Condenser Fan .................................................................................................... 25!
3-8! Fluid Temperature Considerations ............................................................................. 26!
3-9! Initial Start-Up ............................................................................................................ 28!
3-10! Finishing Setup: Setting Up Passwords ..................................................................... 28!
CHAPTER 4:! OPERATION ....................................................... 30!
4-1! Panel Buttons, Indicator Lights, and Switches ........................................................... 30!
Microprocessor Controller ................................................................................... 30!
4-2! Initial Start-up ............................................................................................................. 31!
4-3! PGD1 Status Screens ................................................................................................ 33!
4-4! Access Levels ............................................................................................................ 38!
4-5! Controller Setpoints .................................................................................................... 38!
Adjusting the Setpoint ......................................................................................... 39!
4-6! Alarms ........................................................................................................................ 40!
4-7! Optional Communications .......................................................................................... 40!
CHAPTER 5:! MAINTENANCE ................................................. 42!