[Ahu22x] Air handling unit, temperature cascade control, 2-speed fans, mixed air dampers for air quality control

Name: [Ahu22x] Air handling unit, temperature cascade control, 2-speed fans, mixed air dampers for air quality control (all options)

Library hierarchy: Plants

Plant operating modes

Off
Speed 1
Speed 2
Night cooling
Smoke extraction by supply air
Smoke extraction by exhaust air
Smoke extraction purge

Plant diagram

Main functions	Main components
Temperature control with extract air/supply air temperature cascade control Air quality control	Fans, 2 speed Shutoff dampers and fire dampers Energy recovery with rotary heat exchanger Mixing air dampers Hot water heating coil Chilled water cooling coil

Control function diagrams

Temperature cascade control

Supply air temperature control*

*without mixed air dampers

Air quality control

Program blocks

Exhaust air damper (Optional)
[Dmp21] Damper, open/close function & 2 BI for feedback	Family Dmp

Outside air damper (Optional)
[Dmp21] Damper, open/close function & 2 BI for feedback	Family Dmp

Outside air filter (Optional)
[AFil21] Air filter, with filter detector	Family Fil

Energy recovery (Optional)
[Erc21] Energy recovery, rotary heat exchanger, temperature-controlled	Family Erc

Mixed air damper (Optional)
[DmpMx21] Mixed air damper, temperature-controlled	Family DmpMx

Heating coil (Optional)
[Hcl21] Hot water heating coil, temperature-controlled	Family Hcl

Cooling coil (Optional)
[Ccl21] Chilled water cooling coil, temperature-controlled	Family Ccl

Supply air fan (Optional)
[Fan22] Fan, 2-speed	Family Fan

Extract air fan (Optional)
[Fan22] Fan, 2-speed	Family Fan

Extract air filter (Optional)
[AFil21] Air filter, with filter detector	Family Fil

Temperature sensors, setpoints and control
[AhuTCtl21] Sensors, setpoints and temperature control for air handling unit	Family AhuTCtl

Air quality sensors, setpoints and control
[AhuAQualCtl21] Sensors, setpoints and air quality control for air handling unit	Family AhuAQualCtl

Extract air fire dampers (Optional)
[Fdp21] Fire damper, open/close function & 2 BI for feedback	Family Fdp

Supply air fire dampers (Optional)
[Fdp21] Fire damper, open/close function & 2 BI for feedback	Family Fdp

Command sequence monitoring (Optional)
[CmdSeqMon21] Command sequence monitoring	Family CmdSeqMon

Plant mode determination
[AhuPltMod22] Plant operating mode determination for air handling unit, for 2-speed fans	Family AhuPltMod