York YCAL Series - Page 9

FORM 150.66-NM3
ISSUE DATE: 09/25/2020
9
JOHNSON CONTROLS
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
TABLE OF CONTENTS (CONT’D)