Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

Page: 3 / 162

Contents
Contents
General safety guidelines................................................................................................................................7
Safety symbols....................................................................................................................................... 7
Changeability of this document...........................................................................................................8
Associated literature..............................................................................................................................8
Conditioned based maintenance.........................................................................................................8
Nomenclature........................................................................................................................................ 9
System fundamentals....................................................................................................................................11
System components............................................................................................................................11
Compressor.................................................................................................................................................12
Motor........................................................................................................................................................... 13
Heat exchangers........................................................................................................................................ 13
Evaporator...................................................................................................................................................13
Condenser...................................................................................................................................................13
Waterboxes................................................................................................................................................. 13
Refrigerant flow control............................................................................................................................ 13
Variable speed drive.................................................................................................................................. 14
Power panel................................................................................................................................................ 14
Optional service isolation valves.............................................................................................................. 14
OptiView control center.............................................................................................................................17
System operation description............................................................................................................ 19
Capacity control..........................................................................................................................................19
Anti-surge minimum frequency............................................................................................................... 20
Smart Freeze...............................................................................................................................................20
Surge protection.........................................................................................................................................21
System operating procedures...................................................................................................................... 22
Pre-starting...........................................................................................................................................22
Start-up................................................................................................................................................. 22
Chiller operation.................................................................................................................................. 23
Chilled liquid control settings.............................................................................................................23
Temperature control setpoint.................................................................................................................. 23
Automatic temperature shutdown.......................................................................................................... 25
Automatic temperature restart................................................................................................................ 25
Operator setpoints quick reference.................................................................................................. 25
Stopping the system............................................................................................................................26
Safety stop............................................................................................................................................26
Operating logs..................................................................................................................................... 26
Fault shutdowns...................................................................................................................................27
Performing prolonged shutdown......................................................................................................27
Restart after prolonged shutdown....................................................................................................27
Freeze damage protection..................................................................................................................27
Physical data.........................................................................................................................................29
YVAM Control Center 3