York YCAL0019 - Page 10

JOHNSON CONTROLS
10
FORM 150.67-NM1
ISSUE DATE: 4/28/2017
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
TABLE OF CONTENTS (CONT’D)