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<DIV dir=ltr align=left><SPAN class=618202416-14102008><FONT face=Arial
color=#0000ff size=2>Try setting the pump kW itself to 0, or at least 0.0001 if
0 doesn't work.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=618202416-14102008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=618202416-14102008>
<DIV align=left>
<DIV align=left><FONT color=#0000ff>John R. Aulbach, PE, CEM</FONT></DIV>
<DIV align=left><FONT face=Arial size=2><EM>Project Manager</EM></FONT></DIV>
<DIV align=left><FONT face=Arial size=2><FONT color=#0000ff>Nexant,
Inc</FONT>.</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>701 West Kimberly Ave., Suite
245</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Placentia, CA 92870-6342
USA</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Phone: 714-524-4402</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Fax: 714-524-4407</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>email: <A
title=mailto:jaulbach@nexant.com
href="mailto:jaulbach@nexant.com">jaulbach@nexant.com</A></FONT></DIV>
<DIV> </DIV></DIV></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Steven
Savich<BR><B>Sent:</B> Tuesday, October 14, 2008 8:52 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] Steam loop
pumping energy<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">All,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I’m modeling a university campus
building with heat provided by central plant steam boilers, providing 15#
steam. I’ve done this by eliminating boilers in the model and attaching a
steam meter to the hot water loop.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">My problem is with pumping
energy. Equest requires that a pump be attached to the hot water loop, but
the actual installation has gravity return condensate. How do I zero out
the pumping energy? I have set pump head = 0, but this gives me pages of
error reports. Any other methods?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Steven<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Bookman Old Style" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Bookman Old Style'">Steven
Savich</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">Systems West
Engineers</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><FONT
face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">411 High
Street</SPAN></FONT></st1:address></st1:Street><o:p></o:p></P>
<P class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><FONT
face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">Eugene</SPAN></FONT></st1:City><FONT
face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">, <st1:State
w:st="on">OR</st1:State> <st1:PostalCode
w:st="on">97401-2427</st1:PostalCode></SPAN></FONT></st1:place><o:p></o:p></P>
<P class=MsoNormal><FONT face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">(541)
342-7210</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Bookman Old Style" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Bookman Old Style'">(541) 342-7220
(fax)</SPAN></FONT><o:p></o:p></P>
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