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<p class="MsoNormal"><span style="color:#1F497D">Gentlemen:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thank you for your input into my problem.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have followed up on recommendations, and got an ERV schedule to work. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">My new question comes back to selecting “when minimum-OA”. . . . . . . . when I change the economizer function to OA Temp,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I still get increased cooling energies.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thought maybe I could change my minOSA schedule from fixed fraction to temperature, and that didn’t help the increased cooling energies.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Again, I do appreciate the assistance and recommendations from this users group, your help has proved very valuable in my limited Equest knowledge.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Ginnie<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> Nick Caton [mailto:ncaton@smithboucher.com]
<br>
<b>Sent:</b> Friday, June 07, 2013 9:08 AM<br>
<b>To:</b> Ginnie Schofield; Bruce Easterbrook<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] Equest - adding Heat Recovery to VAVS system<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hi Ginnie,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I believe this needs to be an ON/OFF schedule.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Also take note of this help entry snippet:<o:p></o:p></span></p>
<p class="MsoNormal">ERV-SCHEDULE specifies that the ERV has its own operating schedule. Note that this schedule can lock out the ERV when it would otherwise be running, but cannot force the ERV to run when the HVAC fans are off.<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Choosing “when minimum-OA” means the program won’t use any schedule you’ve defined, you’ll need to select the scheduling option in the same dropdown, then select your custom schedule.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Finally, be sure to take note of Bill’s reply/advice (attached): Selecting “when minimum-OA,” while
<u>not</u> defining an economizer function (fixed fraction), means in net effect you are telling the heat recovery to operate at all hours the system fans are running. This can definitely be counter-productive, adding building heat into your airstream when
you don’t want to, increasing cooling energies, and so forth.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">~Nick<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><img width="119" height="37" id="Picture_x0020_1" src="cid:image001.jpg@01CE6366.5C897790" alt="cid:489575314@22072009-0ABB"></span><b><span style="font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-family:"Stylus BT","sans-serif";color:#2D4D5E"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E">NICK CATON, P.E.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:7.5pt;color:#CC9900">SENIOR ENGINEER<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;color:#CC9900"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#2D4D5E">Smith & Boucher Engineers</span><span style="font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#2D4D5E">25501 west valley parkway, suite 200<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#2D4D5E">olathe, ks 66061<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#2D4D5E">direct 913.344.0036<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#2D4D5E">fax 913.345.0617<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span style="font-size:10.0pt">www.smithboucher.com</span></a></span><u><span style="font-size:10.0pt;color:blue">
</span></u><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Ginnie Schofield<br>
<b>Sent:</b> Thursday, June 06, 2013 12:30 PM<br>
<b>To:</b> Bruce Easterbrook<br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Equest - adding Heat Recovery to VAVS system<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:#1F497D">Bruce & Users:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Since an ERV/HRV schedule was not created with system, I tried to create one. That didn’t work out so well for me. I believe my results are being calculated on 24/7 operation and NOT bypassed or off when running.
Getting a proper operation schedule should help with the additional cooling shown on simulation reports. Any ideas or methods to create a schedule that will work?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Again, thank you all in advance.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">G</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">INNIE
</span><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">S</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">CHOFIELD<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">M</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">ECHANICAL
</span><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">E</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">NGINEER<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="mailto:gschofield@edaengineering.com">gschofield@edaengineering.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> Bruce Easterbrook [<a href="mailto:bruce5@bellnet.ca">mailto:bruce5@bellnet.ca</a>]
<br>
<b>Sent:</b> Wednesday, June 05, 2013 10:47 AM<br>
<b>To:</b> Ginnie Schofield<br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Equest - adding Heat Recovery to VAVS system<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:13.5pt">Hi Ginnie,<br>
IAQ costs money and bringing in fresh outside air to improve it is the solution. Heat recovery depending on your climate doesn't always save money but typically if you have hot humid summers or cold winters it will. I would first take a look at your ERV/HRV
schedule to make sure it isn't running 24/7. You should also check it's relationship with the economizers. It should be off and bypassed when they are running. You only need fresh air for people when they are there occupying the building.<br>
Bruce Easterbrook P.Eng.<br>
Abode Engineering</span><o:p></o:p></p>
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<p class="MsoNormal">On 05/06/2013 11:22 AM, Ginnie Schofield wrote:<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Equest Users:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">In my school model, I have added the Heat Recovery option to my VAVS system in the current model, and it throws results clear out of line, increasing electric power usage almost 3 times, with increased ventilation fan operation and space
cooling year round, which shouldn’t be necessary in Wyoming.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Looking for methods to modify input and correct these obviously errant results. There has been some discussion here earlier this week, tried a couple of the suggestions, without acceptable results. If adding another system to handle the
heat recovery or adding smaller heat recover to each zone is the right answer, please share the method for creating the new system in detailed edit mode.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thank you in advance for your time and suggestions.<o:p></o:p></p>
<p class="MsoNormal"> <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:navy">G</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">INNIE
</span></b><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">S</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">CHOFIELD</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">E</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">NGINEERING
</span></b><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">D</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">ESIGN
</span></b><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">A</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">SSOCIATES</span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">(Ph) 307-266-5033 (Fx) 307-234-3805</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"> </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Equest-users mailing list<o:p></o:p></pre>
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<pre>To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre>
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