Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 4: Fans used in residential ventilation systems
This European standard specifies performance test methods for fans used in the residential ventilation. These methods primarily concern: a) Ventilation fans installed on a wall or in a window without any duct b) Ventilation fans installed in the downstream of a duct c) Ventilation fans installed in the upwardstream of a duct d) Ventilation fans installed in a duct e) Encased fans having several inlets. This standard defines for each type of fan, the acoustic testing methods. The following method can be used: a) In duct method b) Reverberant field method c) Free field or semi-reverberant method.
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