York YCAL0019 Installation, Operation And Maintenance Manual page 10

SECTION 9 - SERVICE AND TROUBLESHOOTING ..........................................................................................203
Clearing History Buffers................................................................................................................................ 203
Service Mode ............................................................................................................................................... 203
Service Mode - Outputs ............................................................................................................................... 203
Service Mode - Chiller Configuration ........................................................................................................... 204
Service Mode - Analog And Digital Inputs ................................................................................................... 204
Control Inputs/Outputs ................................................................................................................................. 205
Checking Inputs And Outputs ....................................................................................................................... 207
Digital Inputs ........................................................................................................................................207
Analog Inputs - Temperature .............................................................................................................. 207
Outside Air Sensor ..............................................................................................................................207
Liquid and Refrigerant Sensor Test Points ......................................................................................... 208
Entering Chilled Liquid Sensor .....................................................................................................208
Leaving Chilled Liquid Temperature Sensor ................................................................................208
Analog Inputs - Pressure ....................................................................................................................209
System 1 Discharge Transducer ..................................................................................................209
System 2 Discharge Transducer ..................................................................................................209
System 1 Suction Transducer ......................................................................................................210
System 2 Suction Transducer ......................................................................................................210
Digital Outputs .....................................................................................................................................210
Parts .................................................................................................................................................... 211
Assembly and Wiring ........................................................................................................................... 211
Obtaining a Printout ............................................................................................................................. 211
SECTION 10 - MAINTENANCE ...........................................................................................................................215
Important ...................................................................................................................................................... 215
Compressors ................................................................................................................................................ 215
Oil Level Check ...................................................................................................................................215
Oil Analysis ..........................................................................................................................................215
Condenser Fan Motors ................................................................................................................................. 215
Condenser Coils ........................................................................................................................................... 215
Operating Parameters .................................................................................................................................. 215
On-Board Battery Back-Up ........................................................................................................................... 215
Plate And Frame Heat Exchanger (Evaporator) Heater ............................................................................... 215
Overall Unit Inspection ................................................................................................................................. 216
Bacnet, Modbus And Yorktalk 2 Communications ........................................................................................216
BACnet and Modbus Communications ............................................................................................... 219
Analog Write Points .....................................................................................................................219
Binary Write Points ......................................................................................................................219
Analog Read Only Points .............................................................................................................219
Binary Monitor Only Points ..........................................................................................................219
Communications Data Map Notes: ..............................................................................................219
Yorktalk 2 Communications .................................................................................................................223
Received Data (Control Data) ......................................................................................................223
Transmitted Data..........................................................................................................................223
Temperature Conversion Chart .................................................................................................................... 227
R410-A Pressure Temperature Chart ........................................................................................................... 228
Adding Refrigerant Charge After Commissioning .........................................................................................228
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TABLE OF CONTENTS (CONT'D)
FORM 150.67-NM1
ISSUE DATE: 4/28/2017
JOHNSON CONTROLS