York YVAA Installation Operation & Maintenance page 7

Form 201.47-ICOM1
Issue date: 17/11/2022
Electrical connection ...................................................................................................................................... 36
Power wiring ................................................................................................................................................... 37
Power supply wiring ....................................................................................................................................... 37
115 VAC control supply transformer ............................................................................................................... 37
Control wiring ................................................................................................................................................. 37
Volts free contacts .......................................................................................................................................... 38
System inputs ................................................................................................................................................. 38
Power supply wiring ....................................................................................................................................... 39
Customer control wiring .................................................................................................................................. 41
Thermal dispersion flow switch connections .................................................................................................. 42
Section 5 - Technical data .....................................................................................................................................65
Elastomeric isolator installation ...................................................................................................................... 88
Elastomeric isolator specifications ................................................................................................................. 89
One inch deflection isolator installation .......................................................................................................... 90
One inch deflection spring isolator specifications ...........................................................................................91
Two inch deflection, isolator installation and adjustment ................................................................................ 92
Two inch deflection, restrained spring isolator specifications ......................................................................... 93
Section 6 - Commissioning ..................................................................................................................................94
Preparation ..................................................................................................................................................... 94
First time startup ............................................................................................................................................. 97
General operation .......................................................................................................................................... 97
Freeze damage protection ............................................................................................................................. 97
Section 7 - Operation ............................................................................................................................................99
Operating controls .......................................................................................................................................... 99
Basic operating sequence ............................................................................................................................ 101
Unit warning ................................................................................................................................................. 102
Microboard (331-03478-xxx) ........................................................................................................................ 102
SC-EQ communications card ....................................................................................................................... 105
SC-EQ Communication Card interface IPU3 ............................................................................................... 105
Program update ............................................................................................................................................ 111
Data logging ................................................................................................................................................. 112
Unit safeties .................................................................................................................................................. 113
System safeties, faults ................................................................................................................................. 114
Section 8 - Micropanel ........................................................................................................................................ 119
Unit data key ................................................................................................................................................ 122
System data keys 1 through 4 ...................................................................................................................... 124
VSD data key ............................................................................................................................................... 127
Operating hours/Start counter key ............................................................................................................... 129
History key .................................................................................................................................................... 130
Setpoints key ................................................................................................................................................ 137
Program key ................................................................................................................................................. 139
Unit Setup Mode ........................................................................................................................................... 142
Options key .................................................................................................................................................. 149
Date/time and schedule keys ....................................................................................................................... 152
Manual override key ..................................................................................................................................... 155
JOHNSON CONTROLS
Table of Contents (cont'd)
7