York YCAS0373SC, Installation Operation & Maintenance

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6 YORK INTERNATIONAL
FORM 201.19-NM5 (804)
TABLE OF CONTENTS (CONT’D)
SECTION 8 - MICRO PANEL CONTENTS
CHILLER CONTROL PANEL
PROGRAMMING AND DATA ACCESS KEYS ....... 114
DISPLAY AND STATUS INFORMATION KEYS .... 114
ON / OFF ROCKER SWITCH.................................... 114
PROGRAM & SETUP KEYS ..................................... 114
1. INTRODUCTION & PHYSICAL DESCRIPTION 115
1.1 General ......................................................... 115
1.2 Keypad & Display ........................................ 115
1.3 Unit (chiller) ON/OFF Switch...................... 116
1.4 Microprocessor Board .................................. 116
1.5 Ancillary Circuit Boards............................... 116
1.6 Circuit Breakers ........................................... 117
1.8 Transformers................................................. 117
1.9 Motor Protection Modules ........................... 117
1.10 EMS/BAS Controls .................................... 120
1.11 Microprocessor Board Layout.................... 122
1.12 Logic Section Layout ................................. 123
1.13 Anti-Recycle Timer .................................... 124
1.14 Anti-Coincidence Timer ............................. 124
1.15 Evaporator Pump Control........................... 124
1.16 Compressor Heater Control........................ 124
1.17 Evaporator Heater Control ......................... 124
1.18 Pumpdown (EEV) Control ......................... 124
1.19 Alarms ........................................................ 125
1.20 Run Status (chiller) .................................... 125
1.21 Lead / Lag Compressor Selection .............. 125
1.22 Economizer Solenoid Control .................... 126
2. STATUS KEY: GENERAL STATUS MESSAGES &
FAULT WARNINGS............................................... 128
2.1 General ......................................................... 128
2.2 General Status Messages .............................. 128
2.3 Unit Warnings............................................... 129
2.4 Anticipation Control Status .......................... 130
2.5 Unit Fault Status Messages .......................... 131
2.6 System Fault (SAFETY) status ................... 132
2.7 Printout on Fault Shutdown.......................... 135
3. DISPLAY KEYS & OPTION SWITCHES ............. 136
3.1 General ......................................................... 136
3.2 Chilled Liquid Temps key ............................ 136
3.3 System # Data Keys ..................................... 137
3.4 Ambient Temp Key ...................................... 137
3.5 % Motor Current key.................................... 138
3.6 Operating Hrs / Start Counter key................ 138
3.7 Options key & ............................................. 138
3.8 Function Key ................................................ 140
4. PRINT KEYS........................................................... 141
4.1 General ......................................................... 141
4.2 Oper Data Key.............................................. 141
4.3 Operating Data – Software Version.............. 141
4.4 Operating Data – Remote Printout ............... 143
4.5 History Key .................................................. 144
4.6 Fault History Data – Local Display
Messages ...................................................... 144
4.7 Fault History Data – Remote Printout.......... 148
5. ENTRY KEYS ......................................................... 149
5.1 General ......................................................... 149
5.2 Numerical Keypad........................................ 149
5.3 Enter Key...................................................... 149
5.4 Cancel Key ................................................... 149
5.5
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KEYS ............................................... 149
6. SETPOINTS KEYS & CHILLED LIQUID
CONTROL............................................................... 150
6.1 General ......................................................... 150
6.2 Chilled Liquid Temperature Control ............ 150
6.3 Local Cooling Setpoints Key ....................... 154
6.4 Remote cooling setpoints Key...................... 154
7. CLOCK KEYS ........................................................ 155
7.1 GENERAL ................................................... 155
7.2 SET TIME KEY ........................................... 155
7.3 set schedule / holiday key............................. 156
7.4 Manual Override key.................................... 157
8. PROGRAM KEY..................................................... 158
8.1 General ......................................................... 158
8.2 Program Key – User Programmable Value .. 158
8.3 Programming "Default" Values .................... 162
8.4 Electronic Expansion Valve.......................... 164
8.5 EEV Operation ............................................. 165
8.6 EEV Programming ....................................... 167
8.7 EEV Troubleshooting ................................... 168
8.8 Condenser Fan Control................................. 169
8.9 Service Mode: Unit Setup ............................ 171
8.10 Sensor Calibration Charts........................... 174
8.11 Control Inputs/Outputs ............................... 175
8.12 ISN Control ............................................... 178