<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi everyone,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am trying to model a testing laboratory with a number of distributed systems (fan coils, modeled as VAV for variable fan control) that pull air from a 100% outside air makeup unit on the roof.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am wondering what is possible using the “Outside Air from System” option on the air-side systems tab for airflow control. I set up a simple model to test my theory where I created a dummy zone, served by a dedicated Make-Up-Air Unit (MAU) that is 100% outside air. I then had two VAV systems (I will refer to these as AHU) that service a floor each that I set to “Outside Air from System” and pointed them to the MAU.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In running the simulation, I get a warning that the MAU is being re-sized for a higher airflow, which I would expect, however, the hourly output reports show a constant volume of air coming into my building no matter what arrangement I specify for the Minimum OA Control Method at both the AHU and the MAU. I even put a zone-level exhaust fan in my model with a schedule that changes over the course of the day and still, the MAU always brings in a constant volume of air.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there any way to use the “Outside Air from System” feature where the MAU actively tracks the airflow rate with the sum of the systems (AHU) it provides air to?<o:p></o:p></p><p class=MsoNormal><br>I feel like if this works, I might end up breaking eQuest. But I suppose, that’s everyone’s goal.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>Neil Bulger</span></b><span style='color:gray'><br></span><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>Project Engineer<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#99CC00'>________________________________</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:#999999'>I N T E G R A L<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#999999'> </span></b><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'> </span></b><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:gray'>GROUP</span></b><span style='font-size:8.0pt;font-family:"Times New Roman","serif";color:gray'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#999999'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>427 13th Street, Oakland CA 94612</span><span style='color:gray'><br></span><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'>510 663 2070 x 235<br></span><u><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:blue'><a href="mailto:nbulger@integralgroup.com"><span style='color:blue'>nbulger@integralgroup.com</span></a></span></u><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:gray'><br><a href="http://www.integralgroup.com/"><span style='color:blue'>www.integralgroup.com</span></a></span><b><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#99CC00'><br>________________________________</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>