Ventilation concept according to DIN 1946-6

DIN 1946-6 contains rules for the ventilation of residential buildings (new and renovated buildings), stipulations of limit values as well as calculation methods for the necessary air exchange, taking into account energy, structural-physical, ventilation technology as well as hygiene aspects. These rules basically distinguishes between free and fan-assisted ventilation in four ventilation stages:

1. Basic ventilation to prevent moisture damage (MV)
2. Reduced ventilation (RV) for the hygienic minimum standard
3. Nominal ventilation (NV) to ensure compliance with hygienic requirements and building protection in normal use
4. Intensive ventilation (IV) for breaking down load peaks.

While the basic ventilation and the reduced ventilation must operate independently of the user, the nominal and intensive ventilation can involve the user in the form of active ventilation by opening windows. The ventilation concept can be created, for example, by the architect, TBE engineer, building energy consultant or HVAC craftsman.

Since a specialist familiar with ventilation measures is not always involved in repair or modernisation measures, this task is often the responsibility of the craftsman performing it. For this reason, DIN 1946-6, supplement 2 has simplified the application, so that also craftsmen can perform calculations based on tables and diagrams.