York YZ MODEL A - Table of Contents

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JOHNSON CONTROLS

FORM 161.01-OM1

ISSUE DATE: 6/8/2018

TABLE OF CONTENTS

SECTION 1 - SYSTEM FUNDAMENTALS ............................................................................................................. 11

System Components ...................................................................................................................................... 11

System Operation ...........................................................................................................................................15

Water Circuits .................................................................................................................................................17

SECTION 2 - SYSTEM OPERATING PROCEDURES ........................................................................................... 21

Pre-Starting ....................................................................................................................................................21

Start-Up ..........................................................................................................................................................21

Chiller Operation ............................................................................................................................................22

Chilled Liquid Control Settings .......................................................................................................................22

Operator Setpoints Quick Reference .............................................................................................................23

Stopping The System .....................................................................................................................................24

Safety Stop ..................................................................................................................................................... 24

Operating Logs ............................................................................................................................................... 24

Fault Shutdowns .............................................................................................................................................25

Prolonged Shutdown ......................................................................................................................................25

Restart After Prolonged Shutdown .................................................................................................................25

SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION ............................................. 27

Interface Conventions ....................................................................................................................................27

Languages ......................................................................................................................................................29

Analog Input Ranges ...................................................................................................................................... 29

Display Messages ..........................................................................................................................................90

Master Slot Numbers List For Use With Trend Feature .................................................................................87

SECTION 4 - VSD OPERATION ...........................................................................................................................107

PYT Model VSD Overview ........................................................................................................................... 107

PYT Model VSD Components ...................................................................................................................... 107

PYT Model VSD (330, 420, 780, 1020 & 1280 Amp) ...................................................................................108

Harmonic Filter Option .................................................................................................................................108

Critical Load Power ......................................................................................................................................109

SECTION 5 - MAINTENANCE .............................................................................................................................. 119

Preventative Maintenance ............................................................................................................................ 119

Renewal Parts ..............................................................................................................................................120

Operating Inspections ..................................................................................................................................120

Checking System For Leaks ........................................................................................................................120

Conduct Pressure Test .................................................................................................................................120

System Evacuation .......................................................................................................................................121

Vacuum Dehydration ....................................................................................................................................121

Conduct Pressure Test .................................................................................................................................124

Refrigerant Charging ....................................................................................................................................124

Checking The Refrigerant Charge ................................................................................................................ 124

Handling Refrigerant For Dismantling And Repairs ......................................................................................125

Compressor and Motor .................................................................................................................................125

Condensers and Evaporators .......................................................................................................................125

Electrical Controls ........................................................................................................................................127

Automatic Battery Health Test – During Shutdown.......................................................................................128