This sequence sums up zone level minimum outdoor airflow setpoints and find the maximum outdoor air fraction. It is implemented according to Section 5.16.3.1 of ASHRAE Guideline G36, May 2020.
It calculates following values:
VAdjPopBreZon_flow for all zones that are in all
zone groups in occupied mode,
VSumAdjPopBreZon_flow.VAdjAreBreZon_flow for all zones that are in all zone
groups in occupied mode, VSumAdjAreBreZon_flow.VZonPri_flow
for all zones in all zone groups that are in occupied
mode,VSumZonPri_flow.uOutAirFra_max.See
Buildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints
for the detailed description of the inputs
VAdjPopBreZon_flow, VAdjAreBreZon_flow
and VMinOA_flow.