York YCWL0056SE Installation Operation & Maintenance page 8

SECTION 6 - COMMISSIONING ..........................................................................................................................109
Preparation - Power Off ............................................................................................................................... 109
Inspection ...........................................................................................................................................109
Refrigerant Charge ..............................................................................................................................109
Service and Oil Line Valves .................................................................................................................109
Compressor Oil ...................................................................................................................................109
Fans ...................................................................................................................................................109
Isolation / Protection ............................................................................................................................109
Control Panel .......................................................................................................................................109
Power Connections .............................................................................................................................109
Grounding ............................................................................................................................................ 110
Supply Voltage .................................................................................................................................... 110
Preparation - Power On ............................................................................................................................... 110
Switch Settings .................................................................................................................................... 110
Compressor Heaters ........................................................................................................................... 110
Water System ...................................................................................................................................... 110
Flow Switch ......................................................................................................................................... 110
Temperature Sensor(s) ........................................................................................................................ 110
Unit Operating Sequence ............................................................................................................................. 114
SECTION 7 - UNIT CONTROLS .......................................................................................................................... 115
Introduction ................................................................................................................................................... 115
IPU II and I/O Boards .......................................................................................................................... 115
Unit Switch .......................................................................................................................................... 116
Display ................................................................................................................................................. 116
Keypad ................................................................................................................................................ 116
Battery Back-up ................................................................................................................................... 116
Transformer ........................................................................................................................................ 116
Single System Select and Programming # of Compressors ............................................................... 116
Status Key .................................................................................................................................................... 117
Unit Status ........................................................................................................................................... 117
General Status Messages ................................................................................................................... 117
Fault Safety Status Messages ............................................................................................................. 119
System Safeties ........................................................................................................................... 119
Unit Safeties .................................................................................................................................120
Unit Warning ........................................................................................................................................121
Status Key Messages ................................................................................................................................... 122
Display/Print Keys ........................................................................................................................................ 123
Oper Data Key .....................................................................................................................................123
Oper Data Quick Reference List ..................................................................................................126
Print Key ..............................................................................................................................................127
Operating Data Printout ...............................................................................................................127
History Printout ............................................................................................................................128
History Displays ...................................................................................................................................128
Entry Keys .................................................................................................................................................... 131
Up and Down Arrow Keys ...................................................................................................................131
Enter/adv Key ......................................................................................................................................131
8
TABLE OF CONTENTS (CONT'D)
FORM 201.26-NM1
ISSUE DATE: 1/19/2018
JOHNSON CONTROLS