Title 24 Standards section 140.9 regulates Kitchen Hoods, and contains a table that specifies the maximum exhaust flow for a hood. Hoods that are Eyebrow style may not be used in Heavy Duty or Extra Heavy Duty applications. Hoods that are Backshelf / Passover style may not be used in Extra Heavy Duty applications.
To correct this, go to the Zone level of the Tree, Mechanical tab and select a lower duty rating for the hood.
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