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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Just set up a new chiller in your primary chilled water loop,
and set it to type &#8220;waterside economizer&#8221;.&nbsp; Then create the associated pumps /
power consumption, and eQuest will automatically use this chiller (in lieu of
any powered chillers) whenever there is a possibility for waterside economizer
based on ambient conditions and required temperature of chilled water loop to
meet loads.<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:teal'>GHT Limited<br>
</span></b><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif"'><ns0:PersonName><span
 style='color:black'>James Hansen</span></ns0:PersonName></span></b><b><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>, PE,
LEED AP<o:p></o:p></span></b></p>

<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Senior Associate</span></b><b><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></b></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><ns0:Street><ns0:address><span
  style='color:black'>1010 N. Glebe Rd, Suite 200</span></ns0:address></ns0:Street></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><ns0:place><ns0:City><span
  style='color:black'>Arlington</span></ns0:City><span style='color:black'>, </span><ns0:State><span
  style='color:black'>VA</span></ns0:State><span style='color:black'>&nbsp; </span><ns0:PostalCode><span
  style='color:black'>22201-4749</span></ns0:PostalCode></ns0:place></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-338-5754 (Cell)</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-243-1200 (Office)</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:black'>703-276-1376 (Fax)</span><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:black'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:teal'><a href="http://www.ghtltd.com/"><span style='font-size:10.0pt'>www.ghtltd.com</span></a><o:p></o:p></span></p>

<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#31849B'><o:p>&nbsp;</o:p></span></b></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Pasha
Korber-Gonzalez<br>
<b>Sent:</b> Thursday, April 15, 2010 4:46 PM<br>
<b>To:</b> Jeff Ross-Bain<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Water-Side Economizers<o:p></o:p></span></p>

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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<div>

<p class=MsoNormal>Jeff,<o:p></o:p></p>

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<div>

<p class=MsoNormal>&nbsp;<o:p></o:p></p>

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<div>

<p class=MsoNormal>if you have chilled water coils through your unit MZ unit
and the chilled water is coming from a chiller, then the water size economizing
function comes from the cooling tower that is connected to the chiller which
supplies the chilled water coils.&nbsp; If you are talking about economizer
--in general terms, then maybe you are trying to air-economize which should be
able to be input in the air-side tab-cooling&nbsp; for your MZ AHU.<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;<o:p></o:p></p>

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<div>

<p class=MsoNormal>Look at the plant &amp; cooling tower for your water econo
inputs.<o:p></o:p></p>

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<p class=MsoNormal>&nbsp;<o:p></o:p></p>

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<p class=MsoNormal style='margin-bottom:12.0pt'>Pasha<o:p></o:p></p>

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<p class=MsoNormal>On Thu, Apr 15, 2010 at 1:40 PM, Jeff Ross-Bain &lt;<a
href="mailto:jross-bain@rbgreenbuilding.com">jross-bain@rbgreenbuilding.com</a>&gt;
wrote:<o:p></o:p></p>

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<div>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Hi All,</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>&nbsp;</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>I have an
existing building with a multi-zone air handling system with chilled water and
hot water coils. The system consists of the air handling units, a centrifugal
chiller, cooling tower, and gas fired boiler. I am trying to introduce a
water-side economizer into the system. In the detailed mode, I notice that a
water-side economizer is not allowed with a multi-zone system. The spreadsheet
input simply has an inaccessible &#8220;n/a&#8221; shown for the economizer and does not
allow access.</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>&nbsp;</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Am I
missing something?</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>&nbsp;</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Thanks for
your help.</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>&nbsp;</span><o:p></o:p></p>

<div>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><strong><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Jeffrey G
Ross-Bain, PE, LEED, BEMP</span></strong><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;font-family:"Arial","sans-serif";color:navy'>Ross-Bain
Green Building, LLC</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;font-family:"Arial","sans-serif";color:navy'>404-228-2893</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:navy'>&nbsp;</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:18.0pt;font-family:Webdings;color:green'>P</span><span
style='color:black'> </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Build Green...Save Time</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:navy'>&nbsp;</span><o:p></o:p></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:navy'>&nbsp;</span><o:p></o:p></p>

</div>

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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
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<p class=MsoNormal><o:p>&nbsp;</o:p></p>

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