air flow sensitivity

[EN 13141-4:2021, 3.12]:maximum relative deviation of the maximum air volume flow qvmax of a non-ducted ventilation unit due to a static pressure difference of + 20 Pa and – 20 Pa.

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air handling unit (AHU)

[EN 12792:2003, 22]:factory made encased assembly consisting of sections containing a fan or fans and other necessary equipment to perform one or more of the following functions: circulation, filtration, heating, cooling, heat recovery, humidifying, dehumidifying and mixing of air.

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