<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:m="http://schemas.microsoft.com/office/2004/12/omml" 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">I am running a model for an operating room.  My goal is to show the system savings for a night set back.  I am using a VAV system that is currently running 24/7 at 100% flow.  My goal is to show the benefit of running this system at different
 maximum airflow levels while maintaining constant flow during unoccupied times.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If my OR schedule is 5am to 5pm, I would like the fan to run at 20 ACH during occupied time, 10 ACH during the first 3 hours of unoccupied time, and 6 ACH for the remaining unoccupied time.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can I achieve this by adjusting fan schedules, or fan parameters for different occupancy settings?  Any advice that may point me in the right direction would be helpful.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If three different levels of fan speed are too much to ask, I would be happy with being able to run at 20 ACH during occ. And 6 ACH during unocc.<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"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Crina Bosch<br>
Designer, Sustainability</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:13.5pt;font-family:"Arial","sans-serif";color:red">karpinski<br>
</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:black">ENGINEERING</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><br>
3135 Euclid Avenue<br>
Cleveland, OH  44115</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:red">P</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> 
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">216.391.3700 ext 3087</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:red">F </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">216.391.0108</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:red">E</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"> 
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:red"><a href="mailto:cbosch@karpinskieng.com"><span style="color:blue">cbosch@karpinskieng.com</span></a></span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:red">W
</span><u><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue"><a href="http://www.karpinskieng.com" title="blocked::http://www.karpinskieng.com/
http://www.karpinskieng.com/"><span style="color:blue">www.karpinskieng.com</span></a></span></u><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>