<div dir="ltr"><div class="gmail_default" style="font-size:large;color:rgb(180,95,6)">Veronica,</div><div class="gmail_default" style="font-size:large;color:rgb(180,95,6)">I'm not sure if I understand your problem, but the exceptions for non-predominant HVAC sytems are based on</div><div class="gmail_default" style="font-size:large;color:rgb(180,95,6)"><div class="gmail_default">"Peak thermal loads that <b><u>differ </u></b>by xx W/m2 or more from the average of other spaces..."</div><div class="gmail_default"><br></div><div class="gmail_default">Thus, if all zones are 30 W/m2, they should be modeled with the normal Baseline HVAC.  If, however, one or more zones is 15W/m2 or 50 W/m2, you have justification for using Systems #3 or #4.</div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 13, 2015 at 11:37 AM, Veronica Ochoa <span dir="ltr"><<a href="mailto:veronica.ochoa@hurleypalmerflatt.com" target="_blank">veronica.ochoa@hurleypalmerflatt.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-GB" link="blue" vlink="purple"><div><p class="MsoNormal">Hi,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I’m modelling a data center with 50 thermal zones for LEED EAp2/c1 purposes. The baseline system determined based on area and building type is system 8. However when doing the load deviation average to determine suitability for System 4 (under exception B), all but 6 zones are greater than the 31 W/m2 of the averaged cooling load per system/floor. This means that I will have 6 zones (2.5% of total area) as system 8 and 44 zones as system 4. Do I need to follow the exception that says that each zone served by System 4 should be modelled as one zone per system?? I find this a bit too much… I was wondering if you can simplify this by grouping similar spacetypes by setpoints or floors and reduce the number of systems. <u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Also, in the preliminary submission 100% of the zones were submitted as system 4, but this was noted by the USGBC reviewer as an error (as it was based on the average of the entire building not per system). As it has been now corrected and only 2.5% of the zones will be system 8, we are estimating the difference will be negligible. Would a narrative explaining this suffice? Has anyone been in this situation and how did you approach it? <u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Many thanks in advance for your help,<u></u><u></u></p></div><table width="500" border="0"><colgroup><col></colgroup><tbody><tr><td><p style="FONT-FAMILY:Arial"><span style="FONT-SIZE:11pt;FONT-FAMILY:Arial">Veronica Ochoa</span></p></td></tr><tr><td><p style="FONT-FAMILY:Arial"><span style="FONT-SIZE:11pt;FONT-FAMILY:Arial">Consultant</span></p></td></tr></tbody></table><table style="WIDTH:170.15pt" cellspacing="0" cellpadding="0" width="227" border="0"><colgroup><col width="227"></colgroup><tbody><tr><td style="WIDTH:170.15pt;PADDING-BOTTOM:0cm;PADDING-TOP:0cm;PADDING-LEFT:0cm;PADDING-RIGHT:0cm" width="227" nowrap><p class="MsoNormal" style="FONT-FAMILY:Arial"><b><span style="FONT-SIZE:19.5pt;COLOR:#00aeef">hurleypalmerflatt</span></b></p></td></tr><tr><td style="WIDTH:170.15pt;PADDING-BOTTOM:0cm;PADDING-TOP:0cm;PADDING-LEFT:0cm;PADDING-RIGHT:0cm" valign="top" width="227" nowrap><p class="MsoNormal" style="FONT-FAMILY:Arial;TEXT-ALIGN:right;MARGIN-RIGHT:9.85pt" align="right"><b><i><span style="FONT-SIZE:9pt;FONT-FAMILY:"Arial","sans-serif";COLOR:#00aeef">building</span></i></b><span style="FONT-SIZE:9pt;FONT-FAMILY:"Arial","sans-serif";COLOR:#00aeef"> </span><b><span style="FONT-SIZE:9pt;FONT-FAMILY:"Arial","sans-serif";COLOR:#7dc242">sustainability</span></b></p></td></tr></tbody></table><table width="500" border="0"><colgroup><col width="30"><col></colgroup><tbody><tr><td width="30"><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><b>d:</b></p></td><td><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><a href="tel:%2B44%2020%207535%203750" value="+442075353750" target="_blank">+44 20 7535 3750</a></p></td></tr><tr><td width="30"><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><b>t:</b></p></td><td><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><a href="tel:%2B44%2020%207535%203100" value="+442075353100" target="_blank">+44 20 7535 3100</a></p></td></tr><tr><td width="30"><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><b>e:</b></p></td><td><p style="FONT-SIZE:10pt;FONT-FAMILY:Arial"><a href="mailto:veronica.ochoa@hurleypalmerflatt.com" target="_blank">veronica.ochoa@hurleypalmerflatt.com</a></p></td></tr></tbody></table><p style="FONT-FAMILY:Arial"><a href="https://retrofit.architectsjournal.co.uk/shortlist-2015" target="_blank"><img alt="" src="http://extranet.hurleypalmerflatt.com/signature/marketing-uk.jpg" width="600" height="120"></a><br><a href="http://www.hurleypalmerflatt.com" tar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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><p><span style="font-size:10pt;font-family:Arial,sans-serif;color:black;background-image:initial;background-repeat:initial"></span></p>James V Dirkes II, PE, BEMP, LEED AP<br>CEO/President<br>The Building Performance Team Inc.<br>1631 Acacia Dr, GR, Mi 49504<br><br>Direct: 616.450.8653<br><a href="mailto:jim@buildingperformanceteam.com" target="_blank">jim@buildingperformanceteam.com</a><br><br><a href="http://buildingperformanceteamcom" target="_blank">Website </a>l  <a href="https://www.linkedin.com/pub/jim-dirkes/7/444/413" target="_blank">LinkedIn</a><p align="center" style="margin-bottom:0in;margin-bottom:.0001pt;text-align:center"><b><i><span style="font-size:14.0pt;line-height:115%;font-family:"MS Reference Sans Serif","sans-serif""> </span></i></b><span style="font-family:"MS Reference Sans Serif","sans-serif""></span></p><p style="vertical-align:middle">















</p><p style="margin-bottom:6.0pt;text-autospace:none"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif""><font color="#0000ff">“…happiness
is the joy produced in us by truth. To be truly happy means coming to know how
things really are, experiencing …reality in its ultimate root…<br>
What matters more to one’s happiness than getting more freedom and power is the
end toward which we order whatever freedom and power we have. Unless we order
ourselves to the truth, more freedom and more power will bring only more
unhappiness, examples of which abound.</font></span><br></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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