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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks Cheney.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Has anyone attempted to do this on a LEED project? Did the
reviewer accept this and were there any comments?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'> Cheney
[mailto:chenyu73@gmail.com] <br>
<b>Sent:</b> Monday, October 03, 2011 7:59 PM<br>
<b>To:</b> Otto Schwieterman<br>
<b>Cc:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] ASHRAE 90.1 2007 Baseline System Selection<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Hi Otto, <o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'>As per
90.1-2007 Addendum W, " Where attributes make a building eligible for more
than one <i>baseline </i>system type, use the predominant condition to
determine the system type for the entire building except as noted</span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> in Exception a to Section
G3.1.1.</span>" Since your lab < 20,000ft2, my understanding is
that you can use system 5. <br clear=all>
<o:p></o:p></p>
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<p class=MsoNormal><span style='font-family:"Comic Sans MS"'>Regards, </span><o:p></o:p></p>
</div>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-family:"Comic Sans MS"'>Cheney</span><o:p></o:p></p>
</div>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-family:"Comic Sans MS"'>LinkedIN @ </span><a
href="http://ca.linkedin.com/pub/yu-cheney-chen/27/637/72b" target="_blank"><span
style='font-family:"Comic Sans MS"'>http://ca.linkedin.com/pub/yu-cheney-chen/27/637/72b</span></a><span
style='font-family:"Comic Sans MS"'> </span><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<br>
<o:p></o:p></p>
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<p class=MsoNormal>On Mon, Oct 3, 2011 at 2:30 PM, Otto Schwieterman <<a
href="mailto:oschwieterman@fhai.com" target="_blank">oschwieterman@fhai.com</a>>
wrote:<o:p></o:p></p>
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<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
am modeling a school that is 150,700 SF. There is a welding lab in the school
and it falls within the exceptions of ASHRAE 90.1 2007: G3.1.1 Exception b.
(“Peak thermal loads that differ by 10 btuh/sf or more from the average
of the other spaces served by the system…”). The welding lab is
3,500 SF and I would use System 3 (PSZ-AC) for this space.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>When
I refer to Table G3.1.1A, one of the notes reads “Where attributes make a
building eligible for more than one baseline system type, use the predominant
condition to determine the system type for the entire building.” Does
this allow me to use System 5 (Packaged VAV with Reheat) instead of System 7
(VAV with Reheat) since the predominant condition serves 147,200 SF
(150,700-3,500)? <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>This
is a LEED project and I would obviously rather use system 5 than system 7 as my
baseline HVAC system.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Otto<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
</div>
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