York XT AHU - Page 7

JOHNSON CONTROLS
7
FORM 102.20-OM2
ISSUE DATE: 6/01/2015
SECTION 4 - SERVICE AND REPAIR ....................................................................................................................77
Service Tools and Equipment ......................................................................................................................... 77
Service Information ........................................................................................................................................78
Troubleshooting ..............................................................................................................................................78
Pitot Tube .......................................................................................................................................................78
Inclined Manometer ........................................................................................................................................ 79
Filter Gauge ....................................................................................................................................................79
U-Tube Manometer ........................................................................................................................................79
Duct Pressures ............................................................................................................................................... 80
Velocity .................................................................................................................................................. 80
Static Pressure ......................................................................................................................................81
Total Pressure .......................................................................................................................................81
Requesting Assistance ...................................................................................................................................81
Adjusting, Removing, and Installing Sheaves ................................................................................................82
Fixed Pitch Sheaves (T.B Woods With Sure Grip Bushings) ...............................................................82
Adjustable Pitch Sheaves (T.B. Woods - Model JVS) ...........................................................................84
Adjustable Pitch Sheaves (T.B. Woods - Model FHP) ...........................................................................85
SECTION 5 - WIRING DIAGRAMS ........................................................................................................................87
Installing Kit (If Applicable) .............................................................................................................................92
APPENDIX A – START-UP CHECKLIST ..............................................................................................................107
APPENDIX B – LONG-TERM STORAGE ............................................................................................................ 111
Temperature ................................................................................................................................................. 116
TABLE OF CONTENTS (CONT'D)