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<p class=MsoNormal><span style='color:#1F497D'>My experience has always been
that the 50-hour difference is applied separately to heating and cooling hours,
so the Difference <i>column</i> in the example below would be out of
compliance. The 300-hour limit is applied to each model, so the Difference <i>row</i>
in the example would be in compliance. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>To reduce Baseline unmet hours,
I prefer to leave the cooling/heating coil factors as set by Appx G but
gradually increase the minimum CFM/SQFT for the affected zones. I agree that
is theoretically possible to adjust sizing factors to eliminate unmet hours,
but I argue against this approach in my long-winded discussion of this topic
below:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><a
href="http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2010-January/003024.html">http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2010-January/003024.html</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>(See sections 5.b.i and 5.b.ii)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I would apply this approach to your
Baseline heating and Proposed cooling air flows to achieve compliance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in;text-indent:27.0pt'><b><span
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<p class=MsoNormal style='margin-left:.5in;text-indent:27.0pt'><span
style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif"'>Project
Designer | Energy Analyst<o:p></o:p></span></p>
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<o:p></o:p></span></p>
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</span><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif"'>Office:
214.744.6199 <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif"'><a
href="http://www.teliospc.com/">http://www.teliospc.com </a> 3535
Travis St. Suite 115<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif"'><a
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> Patrick J. O'Leary, Jr.
[mailto:poleary1969@gmail.com] <br>
<b>Sent:</b> Tuesday, July 13, 2010 1:35 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Interpretation of Appendix G3.1.2.2 for
unmet hours<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>i've wondered that before. i had a review comment
several years ago on a leed 2.1 project where the reviewer disagreed with the
concept that the overall unmet load hours were fine as i had a spread similar
to yours in the heating or cooling unmet hours. i ended up increasing cmf
and/or capacity until they were more in line with each other. <br>
<br>
i never did receive a better clarification though, and the 90.1 user manuals
only show an example with 0 unmet hours so it is pretty useless in that regard.<br>
<br>
On 7/13/10 11:28 AM, Brett Fero wrote: <o:p></o:p></p>
<p class=MsoNormal>Has anyone received LEED reviewer comments regarding the
fine-line interpretation of Appendix G3.1.2.2 for unmet hours.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>I think I meet the criteria as shown in the table below.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><img border=0 width=471 height=69 id="Picture_x0020_5"
src="cid:image001.png@01CB2294.1F742280"><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>The unmet loads in either
model is less than 300.<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'>The unmet loads of the proposed
building does not exceed the Baseline building by more than 50.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>There does not appear to be a requirement regarding the
breakdown of heating and cooling unmet hours.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>I know I could tweak the over-sizing factors, but am I
correct in thinking that these results satisfy AppendixG3.1.2.2 for unmet hours?<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Brett
Fero, P.E., LEED AP</span></b><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>RobsonWoese
Inc.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Syracuse,
NY 13212</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>Equest-users mailing list<o:p></o:p></pre><pre><a
href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><o:p></o:p></pre><pre>To unsubscribe from this mailing list send a blank message to <a
href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
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