Air Handling System Control Applications - Honeywell AUTOMATIC CONTROL SI Edition Engineering Manual

Air Handling System Control Applications

Introduction
Abbreviations
Requirements for Effective Control
Applications-General
Valve and Damper Selection
Ventilation Control Processes
Fixed Quantity of Outdoor Air Control ............................................................................................................ 211
Heating Control Processes
Preheat Control Processes
Humidification Control Process
ENGINEERING MANUAL OF AUTOMATIC CONTROL
ENGINEERING MANUAL OF AUTOMATIC CONTROL
............................................................................................................ 203
............................................................................................................ 203
............................................................................................................ 204
............................................................................................................ 206
............................................................................................................ 207
Symbols ............................................................................................................ 208
............................................................................................................ 209
Fan System Start-Stop Control ........................................................... 209
Outdoor Air Fan Control for Multiple AHU's ......................................... 212
Mixed Air Control ................................................................................. 213
Economizer Cycle Decision ................................................................. 215
Economizer Cycle Decision-Outdoor Air Dry Bulb Control ............... 215
Economizer Cycle Decision-Outdoor Air Enthalpy Control ............... 216
Economizer Cycle Decision-Outdoor Air/Return Air
Enthalpy Comparison ....................................................................... 218
Economizer Cycle Decision-Outdoor Air/Return Air Dry Bulb
Temperature Comparison ................................................................. 219
Mixed Air Control with Economizer Cycle (Ventilation System Only) .. 220
Economizer Cycle Control of Space Temperature with Supply Air
Temperature Setpoint Reset ............................................................ 221
............................................................................................................ 223
Control From Supply Air ...................................................................... 223
Control From Space with Supply Temperature Reset .......................... 224
Outdoor Air Temperature Reset of Supply Air Temperature ................ 225
Space Temperature Control of Zone Mixing Dampers
and Reset of Hot Deck Temperature ................................................ 226
............................................................................................................ 228
Preheat Control with Face and Bypass Dampers ................................ 228
Control from Preheat Leaving Air ........................................................ 230
Multiple Coil Control from Outdoor and Supply Air .............................. 231
Year-Round Heat Recovery Preheat System Control ......................... 233
............................................................................................................ 235
Control of Modulating Humidifier ......................................................... 235
AIR HANDLING SYSTEM CONTROL APPLICATIONS
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