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<body class='hmmessage'><div dir='ltr'>Hi all,<br><br>I'm looking for guidance on which number to use for my baseline OA when compared to the proposed system.<br><br>The proposed HVAC system is DOAS - FCUs. OA requirements according to ASHRAE 62.1 are 10,216 cfm. However, to satisfy exhaust requirements, the total system ventilation, i.e. OA as it's a DOAS, is 13,160 cfm.<br><br>Does the baseline OA need to equal 10,216 or 13,160 cfm?<br><br>Thanks<br><br>Dónal<br> </div></body>
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