York YCAL Series Installation Operation & Maintenance page 9

FORM 150.66-NM3
ISSUE DATE: 09/25/2020
EMS-PWM REMOTE TEMPERATURE RESET ..............................................................................141
BAS/EMS TEMPERATURE RESET OPTION .................................................................................142
SECTION 9 - SERVICE AND TROUBLESHOOTING ...........................................................................145
CLEARING HISTORY BUFFERS ....................................................................................................145
SERVICE MODE ................................................................................................................................145
SERVICE MODE - OUTPUTS ..........................................................................................................145
SERVICE MODE - CHILLER CONFIGURATION ..........................................................................145
SERVICE MODE - INPUTS ..............................................................................................................146
CONTROL INPUTS/OUTPUTS ........................................................................................................147
CHECKING INPUTS AND OUTPUTS .............................................................................................149
Digital Inputs .................................................................................................................................149
Analog Inputs - Temperature ......................................................................................................149
Outside Air Sensor .......................................................................................................................149
Liquid & Refrigerant Sensor Test Points ...................................................................................150
Analog Inputs - Pressure ............................................................................................................151
Digital Outputs ..............................................................................................................................152
OPTIONAL PRINTER INSTALLATION ...........................................................................................153
Parts ..............................................................................................................................................153
Assembly and Wiring ...................................................................................................................153
Obtaining a Printout .....................................................................................................................153
SECTION 10 - MAINTENANCE ..............................................................................................................157
IMPORTANT ......................................................................................................................................157
COMPRESSORS ...............................................................................................................................157
Oil Level Check ............................................................................................................................157
Oil Analysis ...................................................................................................................................157
CONDENSER FAN MOTORS ..........................................................................................................157
CONDENSER COILS ........................................................................................................................157
OPERATING PARAMETERS ...........................................................................................................157
ON-BOARD BATTERY BACK-UP ...................................................................................................157
PLATE AND FRAME HEAT EXCHANGER (EVAPORATOR) HEATER .......................................157
OVERALL UNIT INSPECTION ........................................................................................................158
BACNET, MODBUS AND YORKTALK 2 COMMUNICATIONS ....................................................158
BACnet and Modbus Communications ......................................................................................161
Communications Data Map Notes ..............................................................................................161
YorkTalk 2 Communications........................................................................................................166
JOHNSON CONTROLS
TABLE OF CONTENTS (CONT'D)
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