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<P CLASS="76cb5868-670b-4c7a-8f23-c9554efc1bfb"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Erik,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m not sure why the cooling would turn on when you manually size the fan, but another way you could turn the cooling off is to put in an availability schedule that never turns on. That might fix your problem. Also, you can turn on the AHU heating coil by setting the heat source to hot water in the system.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Jeremy<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Myriad Web Pro";color:gray'>___________________________________________</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#5F5F5F'>Jeremy McClanathan</span></b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:gray'>,</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray'> P.E., BEMP, HFDP,</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:gray'> </span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray'>LEED<sup>®</sup> AP BD+C </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:9.0pt'><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:#5F5F5F'><img alt="CDi_Engineers_logo_color.jpg" height=15 id="Picture_x0020_8" src="cid:image001.jpg@01CD3FFD.74E198F0" width=98></span></b><b><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:olive'><o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray'>4200 194th St SW, Ste 200, Lynnwood, WA 98036</span><b><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:olive'><o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray'>P 425-672-1071 | F 425-778-8769 </span><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:13.5pt;font-family:Webdings;color:#99CC00'>P</span><span lang=EN-GB style='font-size:11.0pt;font-family:Webdings;color:#99CC00'> </span><i><span lang=EN-GB style='font-size:7.0pt;font-family:"Verdana","sans-serif";color:#99CC00'>Please consider the environment before printing this email.</span></i><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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"'> Turner, Erik [mailto:eturner@DLRGROUP.com] <br><b>Sent:</b> Thursday, May 31, 2012 5:30 PM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Cc:</b> SEA Admin1<br><b>Subject:</b> [Equest-users] Packaged VAV and manual supply fan sizing<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>eQuest experts,<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m working on modeling a building where we’ll be using a packaged VAV system for heating only (no cooling provided). I’m using the packaged VAV system in eQuest and have sized the cooling side at 0.1 tons to eliminate that side of the system. For the moment I’m waving my hands at the fact that our actual system will have a central HHW coil and eQuest is doing that at the zone level. I’ve managed to get rid of the cooling per my strategy, but the auto-fan sizing for supply fan is way off, which I’ve addressed by specifying a realistic value. When I do that, however, my cooling loads and cooling energy use (per report SS-P) go back to non-zero values.<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Any thoughts on why, when I go back to resize the fan manually, I’m triggering more cooling load? I’ve ticked off crankcase heating even though the magnitudes of cooling seem to be over plant imposed fan heating etc…<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Erik<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span style='font-family:"Arial","sans-serif";color:black'>Erik A. Turner</span></b><span style='font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D'><a href="mailto:eturner@dlrgroup.com"><span style='color:#4D4D4D'>eturner@dlrgroup.com</span></a><o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>DLR Group</span></b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Architecture Engineering Planning Interiors<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D'>o: 206-461-6000<br>901 Fifth Avenue, Suite 700 Seattle, WA 98164-1006<br>Find us at: <a href="http://www.dlrgroup.com/"><span style='color:#4D4D4D'>dlrgroup.com</span></a> | <a href="http://www.facebook.com/dlrgroup/"><span style='color:#4D4D4D'>Facebook</span></a> | <a href="http://www.twitter.com/dlrgroup/"><span style='color:#4D4D4D'>Twitter</span></a><br> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></P>
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