ENGINEERING MANUAL OF AUTOMATIC CONTROL
AIR HANDLING SYSTEM CONTROL APPLICATIONS
202
Cooling Control Processes ............................................................................................................ 236
Control of Modulating Chilled Water Coil Three-Way Valve................. 236
Two-Position Control of Direct Expansion Coil System ....................... 238
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, Economizer
(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 Dead-Bands......................................................................... 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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