NA 041-02-50 AA
Fundamentals (Mirror committee CEN/TC 156 plus WG 1, 8, 20, 23, 24, 25 und WG 26)

The Working Committee NA 041-02-50 AA "Fundamentals (Mirror committee CEN/TC 156 plus WG 1, 6, 8, 19, 20 and WG 23)" of Heating and Ventilation Technology Standards Committee (NHRS) in DIN, works on standards and standardization projects related to terminology, test procedures and measurement methods, design and usability (comfort) of devices or components for natural ventilation and ventilation and air-conditioning systems and devices for mechanical powered residential ventilation of buildings. NA 041-02-50 AA acts as the German mirror committee for the European and international standardization of CEN/TC 156 "Ventilation of buildings" and its working groups CEN/TC 156/WG 1 "Terminology", CEN/TC 156/WG 6 "Design criteria for the indoor environment", CEN/TC 156/WG 8 "Installation" and CEN/TC 156/WG 19 "Joint Working Group between CEN/TC 156 and CEN/TC 371".