Appendix A: TV-VAVB3-E2 Points/Properties
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Min% Heat airflow when AHU Heating - Increases the airflow to the zone and overrides
the configured minimum airflow value whenever the air source is in a heating mode. If
set to 0%, no override is active and the Occupied or Unoccupied Min Airflow value is
used.
This is not a direct percentage of the Max Heat cfm.
To calculate the Min% Heat airflow when AHU Heating configuration, when based on
the Heating Max cfm, Occ Min, and the desired heat minimum airflow cfm, use the
formula Min% Heat airflow when AHU Heating = (Heat Min – Occ Min) / (Heat Max –
Occ Min).
Variables:
• Heat Min = Desired Heating Minimum cfm when AHU Heating
• Heat Max = Heating Maximum cfm
• Occ Min = Occupied Minimum cfm
• Min% Heat airflow when AHU Heating = configuration value in % to achieve min
airflow in AHU heat mode
NOTE These formulas do not generate an exact Heat Min cfm value, but will generate a
value that should maintain the desired Heat Minimum Airflow, whenever the AHU is in a
Heating Mode. To disable any increase in airflow during AHU Heating, set the Heat Min
value to 0%.
To calculate the minimum heating cfm when the AHU mode is Heat, use the formula
below to get the resulting Min Heat cfm when in the occupied mode:
Heat Min = [Min% Heat airflow when AHU Heating * (Heat Max - Occ Min)] + Occ Min
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