ENGINEERING MANUAL OF AUTOMATIC CONTROL
ix
Control System Applications ............................................................................................... 199
Air Handling System Control Applications...................................................................................................... 201
Introduction.......................................................................................... 203
Abbreviations ....................................................................................... 203
Requirements For Effective Control .................................................... 204
Applications-General ........................................................................... 206
Valve and Damper Selection ............................................................... 207
Symbols............................................................................................... 208
Ventilation Control Processes ............................................................. 209
Fixed Quantity of Outdoor Air Control ................................................. 211
Heating Control Processes.................................................................. 223
Preheat Control Processes ................................................................. 228
Humidification Control Process ........................................................... 235
Cooling Control Processes .................................................................. 236
Dehumidification Control Processes ................................................... 243
Heating System Control process ......................................................... 246
Year-Round System Control processes .............................................. 248
ASHRAE Psychrometric Charts .......................................................... 261
Building Airflow System Control Applications ............................................................................................... 263
Introduction.......................................................................................... 265
Definitions............................................................................................ 265
Airflow Control Fundamentals ............................................................. 267
Airflow Control Applications ................................................................. 281
References .......................................................................................... 292
Chiller, Boiler, and Distribution System Control Applications ....................................................................... 293
Introduction.......................................................................................... 297
Abbreviations....................................................................................... 297
Definitions............................................................................................ 297
Symbols............................................................................................... 298
Chiller System Control......................................................................... 299
Boiler System Control.......................................................................... 329
Hot And Chilled Water Distribution Systems Control........................... 337
High Temperature Water Heating System Control .............................. 376
District Heating Applications ................................................................ 382
Individual Room Control Applications ............................................................................................................ 399
Introduction.......................................................................................... 401
Unitary Equipment Control .................................................................. 412
Hot Water Plant Considerations .......................................................... 428