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  1. EggyTheRam

    NFPA 820 - Partial Recirculation Clause Removed?

    Hi all, Reviewing HVAC design for wastewater coarse screening facility. Consultant proposed 75% air recirculation in one of the unclassified rooms when design initiated in 2018 but we asked them to check feasibility to revise design to latest code. Looks like 2020 and 2024 have removed Clause...

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