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<p class=MsoNormal>Does anyone know if the GBCI reviewers are currently
accepting ECMs based off of garage carbon monoxide sensors to index garage
fans? Or if this can actually be included in the model with appropriate
explanation?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>IMC requires constant ventilation for enclosed garages, but
allows CO-based systems to activate the fans. This equates to a
substantial energy savings since most systems like this only operate a few
hours in the morning, evening, and at lunch (other than the minimum 0.05 cfm /
sq ft continuous ventilation required by the IMC).<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>If we explain the system, and explain our assumptions for the
use schedules that dictate the proposed building fan schedules for the garage,
is this acceptable?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Do they require any backup support/studies for exactly how
often the CO levels will rise above acceptable limits, or is it sufficient to make
a conservative assumption that the garage fans will operate from 7-9am, 11-1pm,
and 4-6pm at full load? In my engineering experience, CO-based systems
rarely run, and the circulation fans throughout the garage (which approximate
the continuous 0.05 cfm / sq ft requirements of the IMC CO-based systems) are
what really prevent isolated CO buildup.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";
color:teal'>GHT Limited<br>
</span></b><b><span style='font-family:"Arial","sans-serif"'><ns0:PersonName><span
style='color:black'>James Hansen</span></ns0:PersonName></span></b><b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:black'>,
PE, LEED AP<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Senior Associate</span></b><b><span style='font-size:12.0pt;
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