4
YORK INTERNATIONAL
TABLE OF CONTENTS (CONT’D)
Compressor Components ....................................... 118
System Startup Checklist ..................................... 124
Unit Checks ............................................................ 124
Panel Checks ........................................................... 125
Initial Start-up ....................................................... 126
Checking Subcooling and Superheat ................... 126
Checking Economizer Superheat ......................... 127
Leak Checking ..................................................... 127
SECTION
8
MICROPANEL CONTENTS .......................................................................................... 128
Chiller Control Panel Programming and Data Access Keys ................................................. 128
Display and Status Information Keys ....................................................................................... 128
ON / OFF Rocker Switch ............................................................................................................ 128
Program & Setup Keys .............................................................................................................. 128
1. INTRODUCTION & PHYSICAL DESCRIPTION ................................................................................. 129
1.1
General .................................................................................................................... 129
1.2
Keypad & Display .................................................................................................. 129
1.3
Unit (Chiller) On / OFF Switch ............................................................................... 130
1.4
Microprocessor Board ........................................................................................... 130
1.5
Ancillary Circuit Boards ......................................................................................... 130
1.6
Circuit Breakers ...................................................................................................... 130
1.7
Current Transformers (C.T.) ................................................................................... 131
1.8
Transformers .......................................................................................................... 132
1.9
Motor Protector Modules ...................................................................................... 132
1.10
EMS/BAS Controls ................................................................................................ 134
1.11
Microprocessor Board Layout ............................................................................... 136
1.12
Logic Section Layout ............................................................................................. 137
1.13
Anti-Recycle Timer ................................................................................................ 138
1.14
Anti-Coincidence Timer ......................................................................................... 138
1.15
Evaporator Pump Control ....................................................................................... 138
1.16
Compressor Heater Control .................................................................................... 138
1.17
Evaporator Heater Control ..................................................................................... 138
1.18
Pumpdown (LLSV) Control .................................................................................... 138
1.19
Alarms .................................................................................................................... 138
1.20
Run Status (Chiller) ................................................................................................ 139
1.21
Lead / Lag Compressor Selection ........................................................................... 139
1.22
3 or 4 Compressor Chiller Configuration ................................................................ 139
2. STATUS KEY: GENERAL STATUS MESSAGES AND FAULT WARNINGS ....................................... 140
2.1
General .................................................................................................................... 140
2.2
General Status Messages ....................................................................................... 140
2.3
Unit Warnings ........................................................................................................ 141
2.4
Anticipation Control Status Messages .................................................................. 142
2.5
Unit Fault Status Messages ................................................................................... 143
2.6
System Fault (Safety) Status Messages ................................................................ 144
2.7
Printout on Fault Shutdown ................................................................................... 147
3. DISPLAY KEYS & OPTION SWITCHES ........................................................................................... 148
3.1
General .................................................................................................................... 148
3.2
Chilled Liquid Temps Key ...................................................................................... 148
3.3
System # Data Keys ............................................................................................... 149
3.4
Ambient Temp Key ................................................................................................ 149
3.5
Motor Current Key ................................................................................................. 149
3.6
Operating HRS / Start Counter Key ....................................................................... 150
3.7
Options Key & Dip Switch Settings ...................................................................... 150
3.8
Function Key ......................................................................................................... 152
Summary of Contents for Millennium YCAS 0693
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