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Mistake & recovery · #121

Overlooking the effects of duct leakage on system static pressure and fan selection

3rd YearDuct Systems

Duct leakage downstream of the fan imposes additional load on the fan and robs air from outlets. Design for low leakage class and test before commissionin…

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Duct leakage downstream of the fan imposes additional load on the fan and robs air from outlets. Design for low leakage class and test before commissioning. Leaky duct on a tight-tolerance system will not balance correctly.

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Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.

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