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--></style></head><body lang="EN-US" link="#0563C1" vlink="#954F72"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">Hi Frédéric!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">In the future you can more simply remove the calls for heating/cooling by removing the cooling and heating thermostat schedules entirely (right-click and restore default from the interface). </span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">Per Appendix G the Baseline should match the Proposed case thermostat schedule setpoints (or lack thereof) for each zone, so you are in the clear on that front if you’ve carried the “extreme” temperature setpoints over.</span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">I think you have the leeway to consider a series of spaces to be a single “zone” for simplification and application of Appendix G guidance. I might assign all your corridor zones (in the model) to a single baseline system and continue to designate only the top floor as your control zone (with all other zones having no heating/cooling thermostat schedules, or else modified to the extremes as you’ve done). </span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"><span style="mso-list:Ignore">4.<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">If after LEED review it is determined you must add “dead” systems to the zones which won’t be calling for heating/cooling, rest assured there should be zero impact on your results ;)</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">~Nick</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><div><p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri",sans-serif;color:#002060">NICK CATON, P.E.</span></b><span style="font-size:11.0pt;font-family:"Verdana",sans-serif;color:#1f497d"><br></span><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782">Owner</span></b></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#561782"> </span></b></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782">Caton Energy Consulting</span></b><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:black"><br></span><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> 306 N Ferrel</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> Olathe, KS 66061</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> office: 785.410.3317</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif;color:#561782"><a href="www.catonenergy.com"><span style="color:#561782">www.catonenergy.com</span></a></span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"></span></p></div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060"> </span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Frédéric Genest, ing.<br><b>Sent:</b> Friday, August 21, 2015 5:12 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Modeling of indirectly conditioned spaces under ASHRAE 90.1-2007 AppG</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">Greetings esteemed group.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">I'm in the process on modeling an hotel project for LEED compliance. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">If I read AppG correctly, all "hotel-type" thermal zones are modelled as System 1 or or 2, one system per zone. The exceptions don't apply here (I think).</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">There is a dedicated outdoor air system supplying OA air to the guest rooms, corridors and a bunch of other spaces. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">My problem is the following: the top floor corridor is the only location with a thermostat used to control the OA supply temperature (to maintain that corridor between its heating and cooling setpoints). The temperatures of all other thermal zones are basically uncontrolled (except perimeter zones which have baseboards, which are thus controlled locally).</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">As such, to avoid generating unmet load hours, I've set the temperature shedules to 199F in cooling and 0F in heating. The resulting temperatures are satisfactory and not that far from the controlled one on the top floor.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">However, the baseline building will now have thermal zones with PTACs and setpoints that will basically prevent those from operating. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Any word of advice on this issue would be welcome. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Thanks. </p></div><div><p class="MsoNormal"> </p></div><div id="composer_signature"><p class="MsoNormal">Frédéric Genest, ing. M.Sc.A.</p><div><p class="MsoNormal">LEED BD+C, ASHRAE HBDP</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">DURASIM</p></div><div><p class="MsoNormal"><a href="mailto:fgenest_ing@bell.net">fgenest_ing@bell.net</a> </p></div><div><p class="MsoNormal">514-250-4074</p></div></div></div></body></html>