<HTML dir=ltr><HEAD>
<META content="text/html; charset=unicode" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19046">
<STYLE><!--
font-face
{font-family:Calibri;}
font-face
{font-family:Tahoma;}
font-face
{font-family:"Univers LT 55";}
font-face
{font-family:"Univers LT 45 Light";}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{
font-family:"Univers LT 55";
color:windowtext;
font-weight:normal;
font-style:normal;}
span.BalloonTextChar
{
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{}
div.WordSection1
{page:WordSection1;}
--></STYLE>
</HEAD>
<BODY lang=EN-US link=blue vLink=purple>
<DIV dir=ltr id=idOWAReplyText45094>
<DIV dir=ltr><FONT color=#000000 size=2 face=Arial>Mark,</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial></FONT> </DIV>
<DIV dir=ltr><FONT size=2 face=Arial>Your question seems to be less "how do I make these go away" and more "why is eQuest making it look like my engineer is wrong", correct? The way you phrsed your question makes this sound like a design model question and not a question about a baseline model.</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial></FONT> </DIV>
<DIV dir=ltr><FONT size=2 face=Arial>John Aulbach's advice is a good place to start: see if those items match the mechanical design. At that point, I would then take the time to discuss the rest of the system inputs with the mechanical engineer to make certain the system is described the way he intended. In addition, check the basic load conditions that he assumed compared to what is in eQuest: Occupancy, lighting, miscellaneous loads. If you have a higher occupancy in eQuest than the engineer did when he selected the coils, that could cause the warnings you are seeing and the hours outside the throttling range if the discrepancy was large enough. Make sure to confirm that the right system type was selected in eQuest - take a look in the help file for the system type. A system in the model set to be a single-zone system will have large numbers of hours outside the throttling range if it has multiple zones assigned to it. If you have every room setup in eQuest, but the engineer is designing single-zone systems and grouping rooms into common thermal zones, that may very well be the cause of your problem.</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial></FONT> </DIV>
<DIV dir=ltr><FONT size=2 face=Arial>Another tip: look at the SS-K and SS-O reports to get an idea of where the system (SS-K) temperatures and zone (SS-O) temperatures are at. The SS-O report logs 0 hours in a temperature band when the fans are not on. Those two reports will give you an idea of how far outside of the temperature zone the system is operating. The SS-R report will show you more detailed information on hours where the space temperatures are not being met.</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial></FONT> </DIV>
<DIV dir=ltr><FONT size=2 face=Arial>When you do discuss this, make sure you approach it from a "we have a difference here that I want to make sure we figure out together" approach: both eQuest and the engineer's load calculations take into account a large number of variables. While each variable has a greater or lesser impact on the results, they all do affect the calculations.</FONT></DIV>
<DIV dir=ltr><FONT size=2 face=Arial></FONT> </DIV>
<DIV dir=ltr><FONT size=2 face=Arial>Good luck with the tweaking of the model!</FONT></DIV>
<DIV dir=ltr><FONT color=#000000 size=2 face=Arial></FONT> </DIV></DIV>
<DIV dir=ltr id=idSignature80007>
<DIV><FONT color=#000000 size=2 face=Arial>
<DIV>
<DIV style="MARGIN: 0in 0in 0pt" class=MsoNormal><B><SPAN style="FONT-FAMILY: 'Verdana','sans-serif'; FONT-SIZE: 7.5pt">Jeremy R. Poling, PE, LEED AP+BDC</SPAN></B><SPAN><BR></SPAN></FONT><BR>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> equest-users-bounces@lists.onebuilding.org on behalf of Mark Darrall<BR><B>Sent:</B> Mon 5/2/2011 8:21 AM<BR><B>To:</B> equest-users<BR><B>Subject:</B> [Equest-users] Fixing unmet hours / outside of throttling rangewarnings<BR></FONT><BR></DIV></DIV></DIV></DIV>
<DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">Good Morning, eQUESTers,</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">I’m working on my design case model. Here’s my ATTN report:</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys1 (PSZ) (G.NNW1) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys2 (PSZ) (G.WSW2) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys3 (PSZ) (G.N3) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys4 (PSZ) (G.S4) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys5 (PSZ) (G.N5) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys6 (PSZ) (G.E6) may have inadequate cooling capability</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> Check COOLING-CAPACITY and MIN-SUPPLY-T for consistency</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">**WARNING**********************************************************************</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"> SYSTEM EL1 Sys7 (PSZ) (G.C7) has zero outside air for design calculations</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">This last one I can answer as this system is a R/A only computer room cooler. For the others:</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">COOLING-CAPACITY comes directly from the HVAC designer and is the capacity of the installed units. I’ve tried adjusting MIN-SUPPLY-T from 55 to 50 (and this seems to jive with information the coil manufacturer provides) to get a larger delta-T and it only seemed to make things worse somehow. Minimum OSA is 20%, but again, this is a design condition. These units do have enthalpy-controlled economizers.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">I’m also getting WAY too many hours outside of throttling range – 15%. My baseline model only has a 3%. I’m way out of whack with Appendix G requirements.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt">Any suggestions as to settings to modify to clear these? Thank you!</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 55'; FONT-SIZE: 9pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 8pt">MARK DARRALL, AIA, LEED AP BD+C, NCARB<BR>Senior Project Manager</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 8pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 8pt"><IMG id=Picture_x0020_1 alt=a2so4-email src="image001.jpg" width=136 height=55></SPAN><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 10pt"></SPAN></P>
<P style="TEXT-INDENT: 0.5in" class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; FONT-SIZE: 10pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; FONT-SIZE: 8pt">DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 8pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 8pt">A2SO4 Architecture, LLC</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; COLOR: #333333; FONT-SIZE: 8pt">Union Station</SPAN><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; FONT-SIZE: 8pt"><BR><SPAN style="COLOR: #333333">300 South Meridian Street / 250</SPAN><BR><SPAN style="COLOR: #333333">Indianapolis</SPAN>, <SPAN style="COLOR: #333333">Indiana</SPAN> <SPAN style="COLOR: #333333">46225</SPAN><BR>TEL 317 388 8850</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; FONT-SIZE: 8pt">FAX 317 280 0692</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'; FONT-SIZE: 8pt">MOB 765 749 0841<BR><SPAN style="COLOR: #333333"><A href=""><SPAN style="COLOR: blue">www.a2so4.com</SPAN></A></SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 8pt"></SPAN> </P>
<P class=MsoNormal><B><SPAN style="COLOR: green; FONT-SIZE: 8pt">Please consider the environment before printing this e-mail</SPAN></B><SPAN style="COLOR: green">.</SPAN><SPAN style="COLOR: navy"> </SPAN><SPAN style="COLOR: #333333"> </SPAN><SPAN style="FONT-FAMILY: 'Univers LT 45 Light'"></SPAN></P>
<P class=MsoNormal> </P>
<P class=MsoNormal><SPAN style="COLOR: #333333; FONT-SIZE: 8pt">CONFIDENTIALITY NOTICE: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, you may not review, copy or distribute this message. If you have received this email in error, please notify the sender immediately and delete the original message. Neither the sender nor the company for which he or she works accepts any liability for any damage caused by any virus transmitted by this email.</SPAN></P>
<P class=MsoNormal> </P></DIV></DIV></BODY></HTML>