Great. A minor conundrum remains, quoting:<div><br></div><div><i>"<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">Curiously, in my copy (90.1 2007) economisers are not required for </span><b style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">1b </b><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">(table G3.1.2.6A). However, the following table (G3.1.2.6B) denotes that economiser high limit shutoff should be 75degF for </span><b style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">1b</b><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">."</span></i></div>
<div><font color="#222222" face="arial, sans-serif"><i><br></i></font></div><div><font color="#222222" face="arial, sans-serif">Chris<br></font><br><div class="gmail_quote">On Thu, Jun 13, 2013 at 12:09 PM, Jim Dirkes <span dir="ltr"><<a href="mailto:jim@buildingperformanceteam.com" target="_blank">jim@buildingperformanceteam.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Correct.<u></u><u></u></span></p>
<div class="im"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal" align="center" style="text-align:center">
<b><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#0a3782">James V Dirkes II, PE, BEMP, LEED AP</span></b><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3434f4"><br>
</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.buildingperformanceteam.com/" target="_blank"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#bfbfbf">www.buildingperformanceteam.com</span></b></a></span><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#bfbfbf"> <br>
</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#548dd4">Energy Analysis, Commissioning & Training Services</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188"><br>
</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188">1631 Acacia Drive, Grand Rapids, MI 49504</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188"> USA</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188"><br>
<a href="tel:616%20450%208653" value="+16164508653" target="_blank">616 450 8653</a><u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
</div><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""> Chris Yates [mailto:<a href="mailto:chris.malcolm.yates@gmail.com" target="_blank">chris.malcolm.yates@gmail.com</a>] <br>
<b>Sent:</b> Thursday, June 13, 2013 7:08 AM<br><b>To:</b> Jim Dirkes<br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] economiser for climate zone 1<u></u><u></u></span></p>
<div><div class="h5"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Thanks Jim,<u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">So your understanding is that a mixing box still exists, but the control that varies outdoor air rate doesn't exist. It is in effect a fixed outdoor air rate.<u></u><u></u></p>
</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">??<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Many thanks<u></u><u></u></p></div>
<div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">Chris<u></u><u></u></p><div><p class="MsoNormal">On Thu, Jun 13, 2013 at 11:48 AM, Jim Dirkes <<a href="mailto:jim@buildingperformanceteam.com" target="_blank">jim@buildingperformanceteam.com</a>> wrote:<u></u><u></u></p>
<div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Chris,</span><u></u><u></u></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">More warm weather  = less available cooling from outdoor air = less justification for spending money to install economizer controls.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">p.s., You must provide minimum outdoor air for ventilation, but need not also cool with outdoor air</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#0a3782">James V Dirkes II, PE, BEMP, LEED AP</span></b><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3434f4"><br>
</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.buildingperformanceteam.com/" target="_blank"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#bfbfbf">www.buildingperformanceteam.com</span></b></a></span><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#bfbfbf"> <br>
</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#548dd4">Energy Analysis, Commissioning & Training Services</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188"><br>
</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#778188">1631 Acacia Drive, Grand Rapids, MI 49504 USA<br><a href="tel:616%20450%208653" target="_blank">616 450 8653</a></span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p><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""> <a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Chris Yates<br>
<b>Sent:</b> Thursday, June 13, 2013 6:36 AM<br><b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] economiser for climate zone 1</span><u></u><u></u></p>
<div><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Is it just me, or is does it seem terrifically wasteful that a climate 1 building doesn't require an economiser? Or am I missing something?<u></u><u></u></p>
<div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">KR / Chris<u></u><u></u></p></div></div></div></div></div><p class="MsoNormal"><u></u> <u></u></p></div></div></div></div></div></blockquote></div>
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