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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A">Hi Steve,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A">I believe the requirement comes from Appendix G:  “<b>G3.1.2.4 Fan System Operation.
</b>Supply and return fans shall operate continuously whenever spaces are occupied and shall be cycled to meet heating and cooling loads during unoccupied hours.”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A">Hope that helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A">Ari<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546A"><o:p> </o:p></span></p>
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<td width="100%"><span style="FONT-WEIGHT: bold; COLOR: #0f286f">Ari Greenberg<br>
HVAC Engineer</span> </td>
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<td style="PADDING-TOP: 0.3em" colspan="2"><span style="FONT-WEIGHT: bold; COLOR: #0f286f; text-decoation: none">Bard, Rao + Athanas Consulting Engineers, LLC</span>
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10 Guest St., 4th Floor​  <span style="FONT-WEIGHT: bold; COLOR: #00afdb">|</span>  Boston,​ Massachusetts ​02135<br>
<a style="TEXT-DECORATION: none; COLOR: #484848" href="mailto:agreenberg@brplusa.com"><span style="FONT-WEIGHT: bold; COLOR: #0f286f">e </span>agreenberg@brplusa.com</a>   <span style="FONT-WEIGHT: bold; COLOR: #0f286f">t </span>617.925.8298   <span style="FONT-WEIGHT: bold; COLOR: #00afdb">|</span>  
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<span style="FONT-SIZE: 0.75em; FONT-WEIGHT: bold; COLOR: black; LETTER-SPACING: 0.25em">INNOVATION<span style="FONT-WEIGHT: bold; COLOR: #00afdb"> | </span> EXPERIENCE<span style="FONT-WEIGHT: bold; COLOR: #00afdb"> | </span> PROVEN SUCCESS</span>
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<span style="FONT-SIZE: 0.58em; COLOR: #7f7f7f">This email and any files transmitted with it are confidential and intended solely for the addressee. If you are not the named addressee you should not disseminate, distribute, copy or alter this email.</span>
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<td style="FONT-SIZE: 0.58em; FONT-WEIGHT: bold; COLOR: green" colspan="2"><span style="FONT-SIZE: 1.25em; FONT-FAMILY: Webdings">P</span>  Please consider the environment before printing this e-mail
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<p class="MsoNormal"><b>From:</b> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Steve Jacobs<br>
<b>Sent:</b> Thursday, August 13, 2015 3:30 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Fan cycling when unoccupied<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anyone know if the requirement for the OA to remain off when the fans cycle after hours comes from somewhere in ASHRAE, or is just something that LEED requires.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Steve<o:p></o:p></p>
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