Under HVAC sizing summary, there is minimum outdoor air flow rate (cfm) for each zone. I can see how this is getting calculated. Under outdoor air summary report for entire facility, there is a table for average outdoor air during occupied hours and there is a table for minimum outdoor air during occupied hours. If I calculate the cfm from the mechanical ventilation (ACH) and volume listed in the table, the cfm values are not same as that of the minimum outdoor air flow under the HVAC sizing summary. How are the outdoor air summary report numbers getting calculated? As always, thanks for any help.
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