HVAC tab in model data
You can control the operation of natural ventilation using the data under the Natural Ventilation header on the HVAC tab. When using Calculated natural ventilation model option there is additional data on the Openings tab to control the timing and extent of operation of openings.
Note: the Natural ventilation checkbox must be ticked here on the HVAC tab to allow window, vent and door operation to be defined on the Openings tab.
The data shown under Natural ventilation on the HVAC tab depends on whether you are using the Scheduled or Calculated Natural ventilation setting in Model options.
Both Scheduled and Calculated Natural ventilation options are available with Simple, Compact and Detailed HVAC options.