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NC-2009 IEQp1:Minimum IAQ Performance

Design System Primary supply Airflow (Vpsd)

For a VAV (multiple-zone) system should the Design System Primary supply Airflow (Vpsd) sum up the total supply (and not the outdoor) air of each zone? Accordingly, should the Vdzd figure for each zone of a multiple-zone system reflect the supply airflow of that particular zone? If this is the case, the Vpsd figure should match the Supply Airflow figure entered in the EAp2 Spreadsheet – Table 1.4.7B. Is the assumption described above correct? Thank you in advance.

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