ENGINEERING CMANUAL OF AUTOMATION CONTROL
AIR HANDLING SYSTEM CONTROL APPLICATIONS
202
Humidification Control Process ............................................................................................................ 235
Control of Modulating Humidifier ......................................................... 235
Cooling Control Processes ............................................................................................................ 236
Control of Modulating Chilled Water Coil Three-Way Valve ................ 236
Two-Position Control of Direct Expansion Coil System ....................... 237
Two-Position Control of Direct Expansion Coil System—Modulating
Face and Bypass Damper................................................................ 239
Cold Deck System With Zone Damper Control ................................... 241
Dehumidification Control Processes ............................................................................................................ 243
Direct Expansion or Water Coil System Control .................................. 243
Water Coil Face and Bypass System Control ..................................... 244
Heating System Control Process ............................................................................................................ 246
Space Control of Heating, Free Cooling, and Humidification .............. 246
Year-Round System Control Processes........................................................................................................... 248
Heating, Cooling, and Economizer ...................................................... 248
Multizone Unit...................................................................................... 250
Heating, Cooling, Humidification, and Dehumidification Control
Without Deadbands ......................................................................... 252
VAV AHU, Water-Side Economizer, OA Airflow Control ...................... 255
VAV AHU With Return Fan and Flow Tracking Control ....................... 258
ASHRAE Psychrometric Charts ............................................................................................................ 261
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