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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have found this subject discussed on the forums previously. However, eQuest does not seem to be cooperating with me. I am attempting to create one plenum zone per floor. I specified in the dd wizard one HVAC system per floor but it is still creating plenum zones for every space. This is going to be a 250,000 FT^2 building when I am finished with all the shells. I have found in the past that when I get buildings this large, eQuest begins running slow especially with multiple parametric runs. I found that one way to alleviate this problem is to have on plenum zone per floor. Any help would be appreciated. Attached are the .inp and the .pd2 files.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>Brad Huff, E.I.T., LEED Green Associate, Mechanical Engineer</span></b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:navy'> </span><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0000A0'>I BVH Integrated Services I</span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:black'> </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>860.286.9171 tel </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0000A0'>I</span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'> 860.242.0236 fax</span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0000A0'> I</span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'> 50 Griffin Road South, Bloomfield CT 06002 </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0000A0'>I <a href="http://www.bvhis.com/" title="http://www.bvhis.com/"><span style='color:blue;font-weight:normal'>.bvhis.com</span></a> I</span></b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'> </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>twitter.com/bvhis</span></b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'> </span></b><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#0000A0'>I Hartford Boston </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#0000A0'><o:p></o:p></span></b></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>