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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Just to add to what Eddie said – you will spec OA from only when you are borrowing outside air from another system (Like with a DOAS). I’ve actually never
seen this before (where you specify OA-From as the same system). What its probably doing is taking your return air as OA (at around 78) and cooling it (and taking moisture out of it).
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">I would have thought it would give you an error.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="text-autospace:none"><b><span style="font-size:9.0pt;
font-family:"Arial","sans-serif";color:gray">Vikram Sami</span></b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:gray">, LEED AP<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;
font-family:"Arial","sans-serif";color:gray">Sustainable Design Analyst<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;
font-family:"Arial","sans-serif";color:gray">1382 Peachtree St. NE, Atlanta, GA 30309<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;
font-family:"Arial","sans-serif";color:gray">t: 404-443-7462 f:
</span><span lang="ES" style="font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray">404.892.5823 </span><span style="font-size:9.0pt;
font-family:"Arial","sans-serif";color:gray"> e: vikram.sami@perkinswill.com
</span><span style="font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D"><a href="http://www.perkinswill.com/"><span style="font-size:9.0pt;font-family:
"Arial","sans-serif";color:gray;text-decoration:none">www.perkinswill.com</span></a></span><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:gray"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:3.0pt;text-autospace:none"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:gray">Perkins+Will.</span></b><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:gray">
</span><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#ADD425">Ideas + buildings that honor the broader goals of society</span><span style="font-size:
9.0pt;font-family:"Arial","sans-serif";color:green"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Eddie Corwin<br>
<b>Sent:</b> Thursday, September 09, 2010 3:26 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Review Requested<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">In both of your HVAC systems you have "Outdoor Air From System" object specified. In most cases, you will want to leave this object blank. The only time would want to use
that object if, for example, you were taking the return air from one system, and using it in another, separate, system. I am pretty sure that in your case, especially in the labs, all of the air will be coming from the outside, or will be recirculated within
the same system. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">If you reset those values to their default you get much better cooling results, but you also get heating in the summer, which is another issue you need to look at in more detail.
The "Outdoor Air From System" object is found in your HVAC system --> Outdoor Air --> Outdoor Air and Economizer<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">-Eddie<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> "equest-users-request@lists.onebuilding.org" <equest-users-request@lists.onebuilding.org><br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Sent:</b> Thu, September 9, 2010 3:03:35 PM<br>
<b>Subject:</b> Equest-users Digest, Vol 30, Issue 13<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
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Today's Topics:<br>
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1. LEED compliance new version of eQuest (Peter Hillermann)<br>
2. LEED compliance new version of eQuest (Peter Hillermann)<br>
3. Re: Review Requested (Umesh Atre)<br>
4. Re: Infrared Heaters (Peter Hillermann)<br>
5. Re: Review Requested (Paul Diglio)<br>
6. Re: Reduction of window area in detail mode! (Arunabha Sau)<br>
7. Re: Infrared Heaters (Peter Hillermann)<br>
8. Re: Infrared Heaters (Nick Caton)<br>
9. Re: Infrared Heaters (Peter Hillermann)<br>
10. Re: Review Requested (Umesh Atre)<br>
11. Re: Floor Slab F-factor (Jeremy Poling)<br>
12. Re: Infrared Heaters (Charles Land)<br>
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