York YCAS0210 - Page 4

4 YORK INTERNATIONAL
FORM 201.18-NM1 (102)
TABLE OF CONTENTS (CONT’D)
SECTION 8 MICRO PANEL CONTENTS.....................................................................................103
Chiller Control Panel Programming and Data Access Keys ........................................................103
Display and Status Information Keys ............................................................................................ 103
ON / OFF Rocker Switch.................................................................................................................. 103
Program & Setup Keys ..................................................................................................................... 103
1. INTRODUCTION & PHYSICAL DESCRIPTION ........................................................................104
1.1 General .................................................................................................................. 104
1.2 Keypad & Display................................................................................................. 104
1.3 Unit (Chiller) On / OFF Switch ............................................................................ 105
1.4 Microprocessor Board .......................................................................................... 105
1.5 Ancillary Circuit Boards ....................................................................................... 105
1.6 Circuit Breakers .................................................................................................... 106
1.7 Current Transformers (C.T.) ................................................................................. 106
1.8 Transformers ......................................................................................................... 106
1.9 Motor Protection Modules.................................................................................... 107
1.10 EMS / BAS Controls............................................................................................. 109
1.11 Microprocessor Board Layout .............................................................................. 111
1.12 Logic Section Layout ............................................................................................ 112
1.13 Anti-Recycle Timer............................................................................................... 113
1.14 Anti-Coincidence Timer ....................................................................................... 113
1.15 Evaporator Pump Control ..................................................................................... 113
1.16 Compressor Heater Control .................................................................................. 113
1.17 Evaporator Heater Control.................................................................................... 113
1.18 Pumpdown (LLSV) Control ................................................................................. 113
1.19 Alarms ................................................................................................................... 113
1.20 Run Status (Chiller) .............................................................................................. 114
1.21 Lead / Lag Compressor Selection ......................................................................... 114
2. STATUS KEY: GENERAL STATUS MESSAGES AND FAULT WARNINGS ........................... 115
2.1 General .................................................................................................................. 115
2.2 General Status Messages ...................................................................................... 115
2.3 Unit Warnings ....................................................................................................... 116
2.4 Anticipation Control Status Messages.................................................................. 117
2.5 Unit Fault Status Messages ................................................................................... 118
2.6 System Fault (Safety) Status Messages ................................................................ 119
2.7 Printout on Fault Shutdown .................................................................................. 122
3. DISPLAY KEYS & OPTION SWITCHES ...................................................................................... 123
3.1 General .................................................................................................................. 123
3.2 Chilled Liquid Temps Key .................................................................................... 123
3.3 System # Data Keys ..............................................................................................124
3.4 Ambient Temp Key ............................................................................................... 124
3.5 Motor Current Key................................................................................................ 125
3.6 Operating HRS / Start Counter Key .....................................................................125
3.7 Options Key & Dip Switch Settings ..................................................................... 125
3.8 Function Key......................................................................................................... 127
4. PRINT KEYS.......................................................................................................................................128
4.1 General .................................................................................................................. 128
4.2 Oper Data Key ...................................................................................................... 128
4.3 Operating Data – Local Display Messages........................................................... 128
4.4 Operating Data – Remote Printout ....................................................................... 129
4.5 History Key ........................................................................................................... 131
4.6 Fault History Data – Local Display Messages ..................................................... 131
4.7 Fault History Data – Remote Printout .................................................................. 134