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<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=260001717-07072006>There
is an addendum, although the numbering in the addendum seems to have changed
with a new section prior to this one...</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=260001717-07072006></SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=260001717-07072006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=260001717-07072006><A
href="http://www.ashrae.org/content/ASHRAE/ASHRAE/ArticleAltFormat/200661121930_347.pdf">http://www.ashrae.org/content/ASHRAE/ASHRAE/ArticleAltFormat/200661121930_347.pdf</A> (see
page 7-8)</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=260001717-07072006></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff>
<P><FONT face=Arial color=#000000 size=2>Revise Section G4.2.3.12 as
follows:</FONT></P>
<P><FONT face=Arial color=#000000 size=2>G4.2.3.1.2 </FONT><B><FONT
face=Arial><FONT color=#000000><FONT size=2>Supply Air Temperature Reset
(Systems 5<SPAN class=260001717-07072006> </SPAN></FONT></FONT></FONT><FONT
face=Arial color=#000000 size=2>through 8)</FONT></B><FONT face=Arial
color=#000000 size=2>.</FONT></P>
<P align=left><FONT><FONT color=#ff0000 size=2><SPAN
class=260001717-07072006><EM>The following is
strikethrough:</EM></SPAN></FONT></FONT></P>
<P align=left><FONT><FONT size=2><SPAN class=260001717-07072006></SPAN><FONT
color=#ff0000>Supply air temperature shall be reset based
on</FONT></FONT></FONT></P>
<P align=left><FONT color=#ff0000 size=2>zone demand from the design temperature
difference to a</FONT></P></FONT></DIV>
<DIV>
<P align=left><FONT color=#ff0000 size=2>10°F (5.6°C) temperature difference
under minimum load</FONT></P>
<P align=left><FONT color=#ff0000 size=2>conditions. Design air flow rates shall
be sized for the reset</FONT></P>
<P align=left><FONT color=#ff0000 size=2>supply air temperature; i.e., a 10°F
(5.6°C) temperature difference.</FONT></P>
<P align=left><SPAN class=260001717-07072006><FONT color=#0000ff
size=2><EM>Replacing with:</EM></FONT></SPAN></P>
<P align=left><FONT color=#0000ff size=2>The air temperature for cooling shall
be reset higher</FONT></P>
<P align=left><FONT color=#0000ff size=2>by 5°F (2.3°C) under the minimum
cooling load conditions.</FONT></P></DIV>
<DIV><SPAN class=260001717-07072006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=260001717-07072006><FONT face=Arial
size=2>David</FONT></SPAN></DIV>
<DIV><SPAN class=260001717-07072006>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV>
<DIV align=left><FONT face=Arial
size=2>--------------------------------------------------------------</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>David S. Eldridge, Jr.</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Project Engineer</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>LEED v2.0 Accredited
Professional</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Grumman/Butkus Associates</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>820 Davis St., Suite 300</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Evanston, IL 60201</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>847.328.3555 ext. 224</FONT></DIV>
<DIV align=left><FONT face=Arial size=2><A
href="mailto:dse@grummanbutkus.com">dse@grummanbutkus.com</A></FONT></DIV>
<DIV align=left><FONT face=Arial
size=2>-------------------------------------------------------------</FONT></DIV></SPAN></DIV>
<DIV><FONT color=#0000ff size=2></FONT><BR> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com
[mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>Paul Riemer<BR><B>Sent:</B>
Friday, July 07, 2006 12:06 PM<BR><B>To:</B>
BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] Design Air Flow Sizing per
90.1-2004 App G<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2><SPAN class=865104716-07072006>I would appreciate
any clarifications that can be shared on the underlined sentences in
these two excerpts from Appendix G of ASHRAE 90.1-2004. They
seem contradictory so I must be missing the author's
intent.</SPAN></FONT></DIV>
<DIV><FONT face=Arial><FONT face=TT12B7o00>
<P align=left><FONT size=2>G3.1.2.8 </FONT></FONT><FONT size=2><B><FONT
face="Times New Roman">Design Air Flow Rates. </FONT></B><U><FONT
face="Times New Roman">System design supply<SPAN class=865104716-07072006>
</SPAN></FONT><FONT face="Times New Roman">air flow rates for the <I>baseline
building design </I>shall be based<SPAN class=865104716-07072006>
</SPAN></FONT></U><FONT face="Times New Roman"><U>on a supply-air-to-room-air
temperature difference of 20°F</U>. If<SPAN class=865104716-07072006>
</SPAN></FONT><FONT face="Times New Roman">return or relief fans are specified
in the <I>proposed design</I>, the<SPAN class=865104716-07072006>
</SPAN><I>baseline building design </I>shall also be modeled with fans
serving<SPAN class=865104716-07072006> </SPAN>the same functions and sized for
the <I>baseline </I>system supply<SPAN class=865104716-07072006> </SPAN>fan
air quantity less the minimum <I>outdoor air</I>, or 90% of<SPAN
class=865104716-07072006> </SPAN></FONT></FONT><FONT face="Times New Roman"
size=2>the supply fan air quantity, whichever is larger.</FONT></P>
<P align=left><FONT face="Times New Roman"><FONT size=2>G3.1.3.12 <B>Supply
Air Temperature Reset (Systems 5<SPAN class=865104716-07072006> </SPAN>through
8). </B>Supply air temperature shall be reset based on<SPAN
class=865104716-07072006> </SPAN>zone demand from the design temperature
difference to a<SPAN class=865104716-07072006> </SPAN>10°F temperature
difference under minimum load conditions.<SPAN class=865104716-07072006>
</SPAN><U>Design air flow rates shall be sized for the reset supply air<SPAN
class=865104716-07072006> </SPAN></U></FONT></FONT><FONT
face="Times New Roman" size=2><U>temperature, i.e., a 10°F temperature
difference.</U></FONT></P>
<P align=left><SPAN class=865104716-07072006><FONT size=2>Thank
you,</FONT></SPAN></P></FONT></DIV>
<DIV><SPAN class=141333114-30122005><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-family: 'Times New Roman'">Paul
<SPAN class=SpellE>Riemer</SPAN><BR></SPAN><SPAN
style="FONT-FAMILY: 'BankGothic Md BT'">THE WEIDT GROUP</SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-family: 'Times New Roman'"><BR>952.938.1588<BR><A
title=mailto:PaulR@twgi.com
href="mailto:PaulR@twgi.com">PaulR@twgi.com</A><o:p></o:p></SPAN></DIV></SPAN>
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