What are the main elements that must be controlled in the system of the BMS for HVAC?

For BMS Control for HVAC

ON OFF or all components like Pumps, Chillers, Cooling towers, AHUs and FACUs and thermostat level AHUs and FCUs

Rest monitor there may be many things

like ON OFF temperature and pressure status and many more

Things Mentioned above plus

* Tertiary Pump Speed (If VFD Starter)

* AHU actuator operation

* Chiller Set points.

1. Fire Safety (interface).
2. Emergency system enable/disable.
3. Fan motor on/off command, and status (run,off,trip)