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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Thanks for your replays to my email, it was very much appreciated. I tried modeling the doas system with a dummy zone and OA from system. While looking at my Air side reports I found that the DOAS system OSA equaled the sum OSA from each zone in each system (fine that’s logical). But each system has its own OSA total which is larger than the sum of OSA requirements of its zones (not sure why). Whether I model a doas dummy or not the individual system still require the same amount of OSA. Therefore with the dummy air totals added to the system air totals my building needs more OSA and consumes more BTU’s. Not sure what all this means but It would seem bad? Any insights, does this sound right? This makes me think if I could eliminate this Dummy Doas system and zones, and work in the components of DOAS into the other systems I would at least find a different result, but right?<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Brian Smith, <span style='font-size:10.0pt'>Mechanical Design Engineer</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt'>Murray & Associates, P.C.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt'>T/907.780.6151 F/907.780.6182</span><span style='font-size:9.0pt;font-family:"MS Shell Dlg","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt'><a href="www.murraypc.com"><span style='color:blue'>www.murraypc.com</span></a></span><span style='font-size:9.0pt'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>