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<p class="MsoNormal"><span style="color:#1F497D">This is just a thought, but in the past I have used the water side economizer function that appears in the HVAC menus instead of using the water side economizer chiller. I view this function as working the same
way as adding a separate DOA for OSA control to each AHU when I really have only one DOA serving many AHUs. You have to be careful to turn some items off, like eliminating the pressure drop for an extra AHU coil, etc., but there are a number of menu selections
available to tailor the economizer to your needs.<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">You might try that.<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-family:"Arial",sans-serif;color:#262626">Kathryn Kerns, LEED AP<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#595959">Systems Specialist<span style="font-variant:small-caps"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:2.0pt;font-family:"Arial",sans-serif;font-variant:small-caps;color:#0070C0"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#005FAA">BCE Engineers, Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#005FAA">P</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">253.922.0446</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040">
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">|</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#005FAA">W</span></b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">
</span><span style="color:#1F497D"><a href="http://www.bceengineers.com/"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">bceengineers.com</span></a></span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#595959">6021 12<sup>th</sup> Street E, Suite 200, Fife, WA 98424</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#262626"><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>From:</b> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Porter, Frederick NOR via Equest-users<br>
<b>Sent:</b> Wednesday, November 23, 2016 10:11 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] DOE-2.3 Water Side Economizers - We still need "Non-Integrated"<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All,<o:p></o:p></p>
<p class="MsoNormal">It appears that the WSE “chiller” was changed in the beta of DOE-2.3 included with eQ build 7173. It can/will now operate to augment the other chillers (“integrated”, “series”), instead of turning off when its capacity is inadequate to
meet the loads (“non-integrated”, “parallel”).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, the world is full of non-integrated WSEs, and despite certain prescriptive codes, there is still a need to evaluate them for new construction. I tried some Equip Ctrls and Load Mgmts, but these attempts resulted in either simulation
errors (inadequate capacity) or the attempted “non-integrated” WSE operating when I didn’t want it to. In any case, there may be periods when operators disable WSE operation, so if a CHW EC list does not include the WSE, it should not come on.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There needs to be: <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>clear documentation of how to model the new component with Load Mgmt and Equip Ctrls to perform that way<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>and/or some keywords in the WSE definition to simulate non-integrated operation
<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>and/or a separate “non-integrated” WSE “chiller” type<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Fred<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:black">Fred Porter, BEMP, LEED</span><span style="color:#1F497D">©</span><span style="color:black"> AP<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Principal Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Sustainability Services<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#005DAA">NORESCO<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#7F7F7F"><a href="mailto:fporter@noresco.com">fporter@noresco.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#807F83"><a href="http://www.noresco.com/">www.noresco.com</a></span><span style="font-size:9.0pt;color:#807F83"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;color:#7F7F7F"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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