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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Bill:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The answer is in the question, “For
laboratory spaces…”<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Kevin<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <st1:PersonName
w:st="on">Bishop, Bill</st1:PersonName> [mailto:wbishop@pathfinder-ea.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, August 18, 2010
2:42 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">bldg-sim@lists.onebuilding.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Appendix G.
laboratory spaces with minimum 5000 cfm exhaust</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For baseline HVAC system type, ASHRAE 90.1-2007 has the
following exception (G3.1.1 d.):<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>“For laboratory spaces with a minimum of 5000 cfm of
exhaust, use system type 5 or 7 that reduce the exhaust or makeup air volume to
50% of design values during unoccupied periods.”<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Similarly, “systems serving laboratories with exhaust
rates of 5000 cfm or greater” are excepted from the baseline energy
recovery requirement (G3.1.2.10 h.).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When applying this exception, is it 5000 cfm per space? Per
floor? Per building? Per system?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Bill<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><b><font size=2
color=black face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold'>William</span></font></b></st1:City><b><font
size=2 color=black face="Franklin Gothic Medium Cond"><span style='font-size:
10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold'>
<st1:State w:st="on">Bishop</st1:State>, <st1:State w:st="on">PE</st1:State></span></font></b></st1:place><b><font
size=2 color=black face="Franklin Gothic Medium Cond"><span style='font-size:
10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold'>,
BEMP, LEED<sup>®</sup> AP </span></font></b><b><font size=2 color="#006600"
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:#006600;font-weight:bold'>|</span></font></b><b><font
size=2 color=black face="Franklin Gothic Medium Cond"><span style='font-size:
10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold'>
</span></font></b><b><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;
font-weight:bold'>Pathfinder Engineers & Architects LLP</span></font></b><b><font
size=2 color=black face="Franklin Gothic Medium Cond"><span style='font-size:
10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:address
style="BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x; BACKGROUND-POSITION: left bottom"
tabindex="0" w:st="on"><st1:address w:st="on"><st1:Street w:st="on"><font
size=1 face=Arial><span style='font-size:9.0pt;font-family:Arial'>134 South
Fitzhugh Street</span></font></st1:Street></st1:address><font size=1><span
style='font-size:9.0pt'><br>
</span></font><st1:place w:st="on"><st1:City w:st="on"><font size=1
face=Arial><span style='font-size:9.0pt;font-family:Arial'>Rochester</span></font></st1:City><font
size=1 face=Arial><span style='font-size:9.0pt;font-family:Arial'>, <st1:State
w:st="on">NY</st1:State> <st1:PostalCode w:st="on">14608</st1:PostalCode></span></font></st1:place></st1:address><font
size=1><span style='font-size:9.0pt'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial'>T: (585) 325-6004 <font color=black><span style='color:black'>Ext. 114</span></font></span></font><font
size=1><span style='font-size:9.0pt'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial'>F: (585) 325-6005</span></font><font size=1 color=black face=Arial><span
style='font-size:9.0pt;font-family:Arial;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black'>wbishop@pathfinder-ea.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black'>www.pathfinder-ea.com</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;color:green'>P</span></font><font
color=green><span style='color:green'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green'>Sustainability – less is more.</span></font><font
color=green><span style='color:green'><o:p></o:p></span></font></p>
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12.0pt'><o:p> </o:p></span></font></p>
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