York YCAL Series - Page 8

JOHNSON CONTROLS
8
FORM 150.66-NM3
ISSUE DATE: 09/25/2020
STATUS KEY MESSAGES ...............................................................................................................106
DISPLAY/PRINT KEYS ..................................................................................................................... 107
Oper Data Key ............................................................................................................................... 107
Print Key ........................................................................................................................................ 111
Operating Data Printout ............................................................................................................... 111
History Printout ............................................................................................................................112
History Displays ...........................................................................................................................112
Software Version ..........................................................................................................................114
ENTRY KEYS .....................................................................................................................................115
Up and Down Arrow Keys............................................................................................................ 115
Enter/Adv Key ............................................................................................................................... 115
SETPOINTS KEYS ............................................................................................................................116
Cooling Setpoints .........................................................................................................................116
Leaving Chilled Liquid Control ...................................................................................................116
Return Chilled Liquid Control .....................................................................................................117
Remote Setpoint Control .............................................................................................................117
Schedule/Advance Day Key ........................................................................................................117
Program Key .................................................................................................................................119
UNIT KEYS .......................................................................................................................................124
Options Key ..................................................................................................................................124
CLOCK ...............................................................................................................................................128
SECTION 8 - UNIT OPERATION ............................................................................................................131
CAPACITY CONTROL ......................................................................................................................131
SUCTION PRESSURE LIMIT CONTROLS ....................................................................................131
DISCHARGE PRESSURE LIMIT CONTROLS ...............................................................................131
LEAVING CHILLED LIQUID CONTROL .........................................................................................131
LEAVING CHILLED LIQUID SYSTEM COMPRESSOR SEQUENCING .....................................132
LEAVING CHILLED LIQUID CONTROL OVERRIDE TO REDUCE CYCLING ...........................132
RETURN CHILLED LIQUID CONTROL .......................................................................................... 133
RETURN CHILLLED LIQUID SYSTEM LEAD/LAG AND COMPRESSOR SEQUENCING ......134
ANTI-RECYCLE TIMER .................................................................................................................... 134
ANTI-COINCIDENCE TIMER ...........................................................................................................134
EVAPORATOR PUMP CONTROL ...................................................................................................134
EVAPORATOR HEATER CONTROL ...............................................................................................135
PUMPDOWN CONTROL ..................................................................................................................135
CONDENSER FAN CONTROL (YCAL0041 – YCAL0071 CHILLERS) ........................................135
STANDARD CONDENSER FAN CONTROL - YCAL0041 – YCAL0071 .......................................136
LOW AMBIENT FAN CONTROL OPTION ......................................................................................137
General ..........................................................................................................................................137
Conguration (Jumpers and Potentiometers) ...........................................................................138
Wiring ............................................................................................................................................139
PROGRAMMING ...............................................................................................................................140
LOAD LIMITING ................................................................................................................................140
COMPRESSOR RUN STATUS.........................................................................................................141
ALARM STATUS ...............................................................................................................................141
TABLE OF CONTENTS (CONT’D)