York MILLENNIUM YCAR0315 Installation Operation & Maintenance page 4

1.6 Circuit Breakers ..................................................................................................................... 105
1.7 Current Transformers (C.T.) .................................................................................................. 105
1.8 Transformers ......................................................................................................................... 105
1.9 Motor Protection Modules ..................................................................................................... 105
1.10 EMS/BAS Controls ................................................................................................................ 107
1.11 Microprocessor Board Layout ............................................................................................... 109
1.12 Logic Section Layout .............................................................................................................. 110
1.13 Anti-Recycle Timer ................................................................................................................. 111
1.14 Anti-Coincidence Timer .......................................................................................................... 111
1.15 Evaporator Pump Control ...................................................................................................... 111
1.16 Compressor Heater Control ................................................................................................... 111
1.17 Evaporator Heater Control ..................................................................................................... 111
1.18 Pumpdown Controls ............................................................................................................... 111
1.19 Alarms .................................................................................................................................... 112
1.20 Run Status (Chiller) ................................................................................................................ 112
1.21 Lead / Lag Compressor Selection ......................................................................................... 113
1.22 Compressor Heater ................................................................................................................ 113
2. STATUS KEY and FAULT MESSAGES .......................................................................................... 114
2.1 General ................................................................................................................................... 114
2.2 General Status Messages ...................................................................................................... 114
2.3 Unit Warnings ......................................................................................................................... 116
2.4 Anticipation Control Status Messages ................................................................................... 116
2.5 Unit Fault Status Messages ................................................................................................... 117
2.6 Individual Start Inhibit Safeties .............................................................................................. 118
2.7 System Fault (Safety) Status Messages (Manual Reset) ..................................................... 119
2.8 Printout on Fault Shutdown ................................................................................................... 121
3. DISPLAY KEYS and OPTION SWITCHES .................................................................................... 122
3.1 General .................................................................................................................................. 122
3.2 Chilled Liquid Temps Key ...................................................................................................... 122
3.3 System Data Keys ................................................................................................................. 122
3.4 Ambient Temp Key ................................................................................................................ 123
3.5 Motor Current Key ................................................................................................................. 123
3.6 Operating Hours / Start Counter Key .................................................................................... 123
3.7 Options Key and Dip Switch Settings ................................................................................... 124
3.8 Function Key ......................................................................................................................... 125
4. PRINT KEYS ................................................................................................................................... 126
4.1 General .................................................................................................................................. 126
4.2 Oper Data Key ....................................................................................................................... 126
4.3 Operating Data - Local Display Messages .......................................................................... 126
4.4 Operating Data - Remote Printout ....................................................................................... 128
4.5 History Key ............................................................................................................................ 128
4.6 Fault History Data - Local Display Messages ...................................................................... 129
4.7 Fault History Data - Remote Printout ................................................................................... 131
5. ENTRY KEYS .................................................................................................................................. 133
5.1 General .................................................................................................................................. 133
5.2 Numerical Keypad ................................................................................................................. 133
5.3 Enter Key ............................................................................................................................... 133
5.4 Cancel Key ............................................................................................................................ 133
↑ ↓ Keys ................................................................................................................................ 133
5.5
6. SETPOINTS KEYS AND CHILLED LIQUID CONTROL ................................................................ 134
6.1 General .................................................................................................................................. 134
6.2 Chilled Liquid Temperature Control ...................................................................................... 134
6.3 Local Cooling Setpoints Key ................................................................................................. 135
6.4 Remote Cooling Setpoints Key ............................................................................................. 135
6.5 Chilled Liquid Temperature Control ...................................................................................... 135
6.6 Compressor Capacity Loading Sequence ............................................................................ 136
6.7 "Fuzzy Logic" "Loading" Anticipatory Control ....................................................................... 137
6.8 "Load Limiting" Anticipatory Control ..................................................................................... 137
6.9 Compressor Unloading and Shutdown Sequence ............................................................... 137
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TABLE OF CONTENTS (CONTINUED)
FORM 150.52-NM2 (1001)
YORK INTERNATIONAL