I have a quetion beteewn infiltration and ventilation. I'm modeling a building in openstudio and the building has natural ventilation. I added infiltration to the building useing the method ''Space Infiltration Effective Leakage Area''. the quetion: is if I'm using ''Space Infiltration Effective Leakage Area'' am i modeling natural ventilation? (directly from energyplus) or is necesary add ventilation to the zone.