Luftväxlare. Fläktar. Luftkonditionering

EN ISO 12759-4:2019/prA1 - Fans — Efficiency classification for fans — Part 4: Driven fans at maximum operating speed — Amendment 1: Addition of Annex F providing an example of the use of efficiency classification and editorial changes
Ämnesområden: Luftväxlare. Fläktar. Luftkonditionering
Kommittébeteckning: SIS/TK 170/AG 03 (Ventilation)
Källa: CEN
Svarsdatum: den 22 apr 2026
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This document establishes a system for the classification of fan efficiency for all fan types driven by motors with an electrical input power of 0,125 kW and above. It applies to driven fans only, but not to the system (finished original equipment manufacturer’s product, for example box fans and roof fans or ventilation system) in which they might be installed. This document, as well as ISO 12759-3, ISO 12759-5 and ISO 12759-6, describe a number of different procedures to classify the efficiency of a fan or to apply a minimum efficiency limit (MEL).

Appendix F shows how procedures described in this document can be used to set MELs.

There is no method described to compare these classifications and MELs.