<html><head></head><body lang="en-US" link="blue" vlink="purple" style="background-color: rgb(255, 255, 255); line-height: initial;"> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">The default settings for heat recovery control is'float' which always maximizes heat recovery, even if it reduces free cooling. Changing this to 'mixed air reset' will help.</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Also, on the 2nd heat recovery tab, the default is 1" of static added to the supply fan (on top of whatever you have on the fan tab) to account for the added fan power to push the air through the heat recovery device. </div> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br style="display:initial"></div> <div style="font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif, sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"></div> <table width="100%" style="background-color:white;border-spacing:0px;"> <tbody><tr><td colspan="2" style="font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"> <div style="border-style: solid none none; border-top-color: rgb(181, 196, 223); border-top-width: 1pt; padding: 3pt 0in 0in; font-family: Tahoma, 'BB Alpha Sans', 'Slate Pro'; font-size: 10pt;"> <div><b>From: </b>Nufal, Maye</div><div><b>Sent: </b>Friday, December 18, 2015 8:58 AM</div><div><b>To: </b>equest-users@lists.onebuilding.org</div><div><b>Subject: </b>[Equest-users] Heat Recovery Increases Cooling load</div></div></td></tr></tbody></table><div style="border-style: solid none none; border-top-color: rgb(186, 188, 209); border-top-width: 1pt; font-size: initial; text-align: initial; background-color: rgb(255, 255, 255);"></div><br><div id="_originalContent" style="">
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">We’ve been facing the same issue in multiple projects ; using heat recovery somehow increases our cooling load.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">This was evident in a VAV system as well as Central Plant Systems .<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">We’ve tried using both Sensible HX/Enthalpy wheel with same results.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">Has anyone been able to tackle this issue ?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">Help/workaround ideas is appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">THANKS
</span><span style="font-size:10.0pt;font-family:Wingdings">J</span><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif"">MN<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif";color:#FF9B26">Maye Nufal , LEED BD+C</span></b><span style="font-size:10.0pt;font-family:"Century Gothic","sans-serif";color:#FF9B26"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black">Sustainable Buildings Consultant<br>
Stantec <br>
100-401 Wellington Street West Toronto ON M5V 1E7<br>
Phone: (416) 598-7157<br>
Fax: (416) 596-7892<br>
<a href="mailto:Maye.Nufal@stantec.com"><span style="color:black;text-decoration:none">Maye.Nufal@stantec.com</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Webdings;color:#008040">ü</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><span style="font-size:7.0pt;font-family:"Century Gothic","sans-serif";color:#008040">Please
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