For the measurement of the airflow sensitivity to pressure variations at + 20 Pa and – 20 Pa in small unidirectional (exhaust or supply) RVUs with an electric power input of less than 30 W (outside the scope of Regulation (EU) 1253/2014 except for information requirements), pressure variations will influence the airflow rate to a large degree, as the test pressure often exceeds the unit’s maximum provided pressure.
Therefore, in this specific case, the declared value for airflow sensitivity to pressure variations will be “not applicable.”
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