Dear Jenny, Brian,<br><br>It was indeed because of the fan air stream temperature rise. I forced fed it to zero, and its up and running.<br><br>Thank You so much.<br><br>Thanks Again<br><br>Kushagra<br><br><div class="gmail_quote">
On Fri, Feb 22, 2013 at 7:57 AM, Jenny Zhang <span dir="ltr"><<a href="mailto:jenny.zhang@arup.com" target="_blank">jenny.zhang@arup.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div link="blue" vlink="purple" lang="EN-GB"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Kushagra,<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I think it is because a PIU or VAV has a higher fan temperature rise than fancoil.<u></u><u></u></span></p><p class="MsoNormal">
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Could you send a screen cut of the air side system cooling setting.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">We could know detail about this error.<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><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">JIE<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 style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"> <a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Kushagra Juneja<br>
<b>Sent:</b> 2013</span><span style="font-size:10.0pt;font-family:"Microsoft JhengHei","sans-serif"" lang="ZH-CN">年</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">2</span><span style="font-size:10.0pt;font-family:"Microsoft JhengHei","sans-serif"" lang="ZH-CN">月</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">22</span><span style="font-size:10.0pt;font-family:"Microsoft JhengHei","sans-serif"" lang="ZH-CN">日</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"> 0:00</span></p>
<div class="im"><br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Error - System Type 8 - VAV or PIUs.<u></u><u></u></div>
<p></p></div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal" style="margin-bottom:12.0pt">Dear all,</p><div><div class="h5"><br><br>There is an error that has come up while simulating a 6 lakh sq. ft. bldg.<br>
<br>"cooling coil leaving temperature must be at least 6F higher than entering water temp."<br><br>The CHW temp is 44 F and I have tried varying the zone supply temperature from 52 to 60 F. But no luck. The air side system here was PIU or VAV.<br>
<br>However, when I model the same with an FCU at the air side. No error appears.<br><br>Any clues why such strange behavior and how to resolve it?<br><br>Thanks in advance<span style="color:#888888"><br><br><span>Kushagra </span></span><u></u><u></u></div>
</div><p></p></div><p class="MsoNormal"><u></u> <u></u></p></div><p>____________________________________________________________<br>
Electronic mail messages entering and leaving Arup  business<br>
systems are scanned for acceptability of content and viruses</p></div></blockquote></div><br>