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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>What is the proper way to model the powered exhaust on an RTU with say 10,000 cfm supply air and 2,000 cfm outside air?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is it as simple as using the Return Fan setting with the BHP/efficiency of your powered exhaust fan and the rest is taken care of by the outdoor air schedule?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks!<br><br><o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:Magneto'>Matt Scott<o:p></o:p></span></p><p class=MsoNormal>N.E. Fisher & Associates, Inc.<o:p></o:p></p><p class=MsoNormal>329 East Second St, 2<sup>nd </sup>Flr<o:p></o:p></p><p class=MsoNormal>Boyertown, PA 19512<o:p></o:p></p><p class=MsoNormal>e: mscott@nefisher.com<o:p></o:p></p><p class=MsoNormal>p: 610-369-3190<o:p></o:p></p><p class=MsoNormal>f: 610-369-3194<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>