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<p class="MsoNormal">Ah – fair point Erik! <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The RESET-RATIO schedule type is intended to allow for a scaling of the baseboard output in relation to OADB, and that certainly could a degree of functionality you don’t truly need. If you do need (only) seasonal ON/OFF availability control,
that’s probably more simply/intuitively accomplished with a schedule on a baseboard loop, oftentimes.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That said, I’ve perhaps “misappropriated” the RESET-RATIO scheduling option, above and beyond its intended functionality, to solve the simulation of a variety of baseboard operational situations. You can for example:
<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">Set up a RESET-RATIO DAY schedule to scale its output between a factor of 0.0 and 0.0 (not a typo) to effectively make the baseboard unavailable for a certain portion of the year,
then use a “normal” day schedule scaling up to 1.0, for the times it’s supposed to be active.
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">Set a minimum turndown of something like 0.2 or 0.5 to explore and simulate the reality of stuck/leaky valves that result in the introduction of heat independent of ZONE comfort needs
(sometimes generating unmet hours and/or simultaneous heating/cooling).<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">Tightening the temperature thresholds on a DAY schedule (i.e. 55.0 Low and 55.1 High) can effect a binary “ON/OFF” availability, similar to SNAP scheduling. This is sometimes a more
appropriate reality for baseboard thermostatic valves than a gradual introduction of HW flow over a range of temps.
<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">You can if needed layer any of this with parallel scheduling on the baseboard loop to capture independent boiler scheduling and/or circulation loop valve controls.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo2">It’s appropriate to note – this flexibility/granularity of baseboard operational behavior can sometimes toe or cross the line of “more than the modeler can know/measure.” Keep that
perspective in mind to temper your presented findings and personal expectations, as you leverage these techniques to explore building system behavior and energy savings opportunities.<o:p></o:p></li></ul>
<p class="MsoListParagraph"><o:p> </o:p></p>
<p class="MsoNormal">So granted, a RESET-RATIO schedule may end up being a case of hammering a nail with a wrench in some contexts… but it’s a relatively flexible tool to get the job done for a variety of real-world circumstances. This might also be the case
of “when all you have/know is a hammer, then every problem looks like a nail.” <o:p>
</o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">~Nick<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#3A7A46"><img width="624" height="8" style="width:6.5in;height:.0833in" id="Picture_x0020_1" src="cid:image002.jpg@01D67C79.62603E90"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><span style="color:#3A7A46"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:4.5pt"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy Performance Contracting
</span><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">913 . 564 . 6361<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">785 . 410 . 3317<o:p></o:p></span></p>
<p class="MsoNormal"><u><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"><a href="mailto:nicholas.caton@se.com"><span style="font-family:"Calibri",sans-serif;color:#626469">nicholas.caton@se.com</span></a></span></u><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">15200 Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219<br>
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</span><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Erik Kolderup <erik@kolderupconsulting.com> <br>
<b>Sent:</b> Thursday, August 27, 2020 12:39 PM<br>
<b>To:</b> Nicholas Caton <Nicholas.Caton@se.com><br>
<b>Cc:</b> Matthew Yarmon <matthewy@fastmail.com>; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] baseboards activating when zone is already above heat setpoint?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span style="color:red">[External email: Use caution with links and attachments]</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">I suggest removing the baseboard schedule. It is supposed to be used only when baseboard output is controlled based on outdoor temperature, independent of zone temperature. So leave the baseboard schedule
as "undefined" and set the zone control to "thermostatic". Does that work?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">-Erik<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>Erik Kolderup, PE, LEED AP</b> <o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:erik@kolderupconsulting.com" target="_blank">erik@kolderupconsulting.com</a><span style="color:#999999"> | 415.531.5198 | </span><a href="https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kolderupconsulting.com%2F&data=02%7C01%7CNicholas.Caton%40se.com%7Cfb330d18c8714a6d68f008d84ab00d8c%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637341467287928140&sdata=Hm3wukatGqwrneRmZVX%2Ff1VNjnP1KPHKZXrSpoQkqqs%3D&reserved=0" target="_blank">www.kolderupconsulting.com</a><span style="color:#999999"> </span><o:p></o:p></p>
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<p class="MsoNormal">On Thu, Aug 27, 2020 at 10:34 AM Nicholas Caton via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Matthew!<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">A couple thoughts:<o:p></o:p></p>
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<li class="gmail-m-5167534383136935018msolistparagraph" style="color:#3A7A46;mso-list:l0 level1 lfo1">
<span style="color:windowtext">Baseboard operations can be specified at both ZONE and SYSTEM levels. I’m not entirely sure (intuition alone) which takes precedent if you have both. You may want to review what is entered at the SYSTEM level under the heating
tabs… that could explain the delivery of heat at a time when the zonal temp conditions do not warrant the baseboard’s operation.</span><o:p></o:p></li><li class="gmail-m-5167534383136935018msolistparagraph" style="color:#3A7A46;mso-list:l0 level1 lfo1">
<span style="color:windowtext">Regardless, applying a schedule to the baseboards (and/or baseboard loop, if you have that set up as a distinct loop in the hydronic tab) can probably override this behavior by making the baseboards only available when seasonally
appropriate (by calendar) and/or by utilizing an OADB snap temperature threshold to limit baseboard heating availability.</span><o:p></o:p></li><li class="gmail-m-5167534383136935018msolistparagraph" style="color:#3A7A46;mso-list:l0 level1 lfo1">
<span style="color:windowtext">An error popping up in application of a schedule is possibly what it’s saying on the tin: the schedule may simply an incompatible type (the only valid option for BASEBOARD-SCH is RESET-RATIO)… but sometimes the eQuest interface
is just behaving badly. If you’re uncertain the schedule (annual/week/day schedules inclusive) are of an appropriate/compatible type, then I’d advise starting from scratch by first loading in a compatible library schedule, and adjusting from there. If you
are confident the schedule is of the correct type, then I might try “forcing” this assignment by saving a separate copy of your project, closing eQuest, adding the appropriate assignment to 1 zone via the INP file in a text editor of your choosing, then opening
that modified project to see if it “sticks.” If so, then you may likely be able to proceed with assigning that schedule to the remaining zones as appropriate.</span><o:p></o:p></li><li class="gmail-m-5167534383136935018msolistparagraph" style="color:#3A7A46;mso-list:l0 level1 lfo1">
<span style="color:windowtext">Might be worth noting, if you want to control baseboard heating availability at the circulation loop level, you’ll have a couple few more viable options in terms of schedule type.</span><o:p></o:p></li></ul>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:#3A7A46"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I hope this is helpful!<o:p></o:p></p>
<p class="gmail-m-5167534383136935018msolistparagraph"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">~Nick<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:#3A7A46"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-family:"Arial",sans-serif;color:#3A7A46">Nick Caton, P.E., BEMP</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Senior Energy Engineer</span><o:p></o:p></p>
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<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy and Sustainability Services</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D"><br>
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"> Energy Performance Contracting
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">913 . 564 . 6361</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><u><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469"><a href="mailto:nicholas.caton@se.com" target="_blank"><span style="font-family:"Calibri",sans-serif;color:#626469">nicholas.caton@se.com</span></a></span></u><o:p></o:p></p>
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<span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#626469">15200 Santa Fe Trail Drive<br>
Suite 204<br>
Lenexa, KS 66219</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Equest-users <<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>>
<b>On Behalf Of </b>Matthew Yarmon via Equest-users<br>
<b>Sent:</b> Thursday, August 27, 2020 12:16 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] baseboards activating when zone is already above heat setpoint?<o:p></o:p></p>
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<p><span style="color:red">[External email: Use caution with links and attachments]</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi all,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I hope you're able to see the image below. If not, I uploaded it here: <a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fimgur.com%2Fa%2FWpQ8FSR&data=02%7C01%7CNicholas.Caton%40se.com%7Cfb330d18c8714a6d68f008d84ab00d8c%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637341467287938144&sdata=ShNvZFxPIwqGsioi5uN5Miz56dzs%2F2MsC7jZSWBQl00%3D&reserved=0" target="_blank">https://imgur.com/a/WpQ8FSR</a>
It shows eQuest 'hourly results', specifically it shows a warm day in the year, July 3rd, for a model I'm looking at.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">In my model, from 1pm-4pm on July 3rd, the heating setpoint is 71 °F (grey column), cooling setpoint is 76 °F (blue). Outdoor temp is ~84 °F (orange), zone temps are ~75-77 °F.
The question is, why are my baseboards (yellow column) activating and heating the zone? The temp in the zone is above the heating setpoint, so the baseboards should not be turning on. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The baseboards are set to 'thermostatic' control. I've been unable to set baseboard schedule (see 2nd screenshot below - if anyone has a suggestion for this problem, I'd love
to hear it). But regardless of the schedule, if the zone heat setpoint is 71 °F, and zone temp is above 74 °F, why are baseboards turning on?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Matthew<o:p></o:p></p>
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<img border="0" width="511" height="766" style="width:5.3229in;height:7.9791in" id="gmail-m_-5167534383136935018_x005f_x0000_i1026" src="cid:image005.png@01D67C73.2BBBA790"><o:p></o:p></p>
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<img border="0" width="427" height="428" style="width:4.4479in;height:4.4583in" id="gmail-m_-5167534383136935018_x005f_x0000_i1027" src="cid:image006.png@01D67C73.2BBBA790"><o:p></o:p></p>
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