<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:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Garamond;
panose-1:2 2 4 4 3 3 1 1 8 3;}
/* 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 Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</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=Section1>
<p class=MsoNormal>So I’m trying to figure out why my OA seems to be set
to zero year round on a current model I’m running. I set OA/person and
OA/ft^2 to ASHRAE 62.1 specifications for each zone. The min OA setpoint is set
to .15 (although I have switched it all the way up to 1 with no) as a fraction
of the design flow. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>This results in year round chiller cooling (I’m in climate
zone 5) when the air side economizer should be fully capable of handling the
cooling. I opened up the hourly reports, and set a block to measure my return
and supply air flow, and when I take the difference of the two (which I would
expect to be the OA – I’m not pressurizing the building) it is 0
year round. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Has anyone else experience something like this? <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"'>We've moved! Our new
address is:</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></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"'>400 Main St. Suite
200</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>La
Crosse, WI 54601<br>
<br>
My new direct number is 608.785.3328</span><b><i><span style='font-size:12.0pt;
font-family:"Garamond","serif";color:green'><o:p></o:p></span></i></b></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><i><span
style='font-size:12.0pt;font-family:"Garamond","serif";color:green'>Eric
O'Neill</span></i></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif";color:gray'>Mechanical
Engineer</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif";color:gray'>Energy
Division - Michaels Engineering</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:gray'>400 Main St. Suite 200</span> <br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'>La
Crosse, WI 54601</span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'>office:
608-785-1900<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:gray'>direct: 608-785-3328</span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'>f:
608-784-2270</span> <br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'>elo@michaelsengineering.com</span>
<br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:red'><a
href="http://www.michaelsengineering.com"><span style='color:blue'>http://www.michaelsengineering.com</span></a></span>
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</body>
</html>