Author: Halton
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How do replacement air ceiling registers affect the hood?
The placement and location of ceiling registers (diffusers) for the introduction of replacement air can have a direct impact on the proper operation of the exhaust hood. Diffusers that…
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Is cooking equipment makes and models important for preliminary engineering?
Commercial cooking equipment makes and models are important for preliminary engineering Outdated methods of ventilation design categorized commercial cooking equipment (appliances) into different classes; light, medium, heavy-duty and extra…
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What temperature should the supply air be introduced to the Kitchen?
Engineers will typically design for a supply air temperature at 10 degrees above traditional occupied spaces outside of the kitchen. Supply air is usually brought into an occupied space…
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Who is the “AHJ” and what authority do they have on a project?
AHJ refers to “The Authority Having Jurisdiction”. The AHJ has final authority for the interpretation of fire and building codes (NFPA, IMC). Although model codes are interpreted fairly consistently,…
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What are the standards for hood overhang to specific cooking equipment? Is it based on UL Listings of the hood?
The specific overhang (ends, front and/or rear) are predicated on the U.L. 710 testing for the specific model of that manufacturer. When testing for capture of visible cooking vapors,…
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