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<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2>Tony, </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2>As I understand it, the fan control settings offered such
as "Discharge" just set an assumption for the fan part load performance curve
(EIR FPLR) used in the simulation.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2>You can either use one of the predefined fan performance
assumptions, or define your own using "Fan EIR
FPLR"</FONT></SPAN></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2><SPAN
class=345421422-10032009></SPAN></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2><SPAN class=345421422-10032009>When you set FAN-CONTROL to
"Discharge", then right click on the Fan EIR FPLR and 'restore default' it will
revert to n/a. It will not do this when you have FAN-CONTROL set to "Fan
EIR FPLR"</SPAN></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2><SPAN
class=345421422-10032009></SPAN></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2>I'm not sure which takes priority if you have both
FAN-CONTROL set to "Discharge" and a custom Fan EIR FPLR input. You could easily
run some tests and see.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2>Kind Regards,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=345421422-10032009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV align=left><FONT face=Arial size=2>Molly Curtz, P.E.</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Mechanical Engineer</FONT></DIV>
<DIV align=left><FONT face=Arial size=2></FONT> </DIV>
<DIV align=left><FONT face=Arial size=2>Arup</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>403 Columbia St., Suite 220</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Seattle, WA 98104</FONT></DIV>
<DIV align=left><FONT face=Arial size=2><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
<DIV align=left>direct: 206 493 2234</DIV>
<DIV align=left><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">tel: 206 749
9674 ext. 25534</SPAN></FONT></SPAN></FONT></FONT></DIV></DIV>
<DIV align=left><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">fax: 206 749
0665</SPAN></DIV>
<DIV align=left><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">molly.curtz@arup.com</SPAN></DIV>
<DIV align=left><FONT face=Arial size=2><A
href="http://www.arup.com/">www.arup.com</A></FONT></DIV>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<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>Tony
Kriel<BR><B>Sent:</B> Tuesday, March 10, 2009 2:39 PM<BR><B>To:</B>
equest-users@lists.onebuilding.org;
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] Fan
Control<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">We have a bit of an in-office
argument going on and I was wondering if people could share some insight on the
subject.<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">Situation:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">A user has a VAV system with dampers
at the VAV boxes and a VFD on the supply fan. To properly model this,
would the user make sure that the Fan EIR is ‘Variable Speed Drive FPLR’ and
then change Fan Control to ‘Discharge’ or leave it as ‘Fan EIR
FPLR’?<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">If you are supposed to leave the fan
control dialogue as ‘Fan EIR FPLR’ then what is the purpose of being able to
change the fan control if you have already selected the appropriate Fan EIR
curve?<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 for helping solve the
in-office dispute,<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">Tony Kriel, LEED
AP</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Mechanical Engineer</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A
href="mailto:tkriel@sustaineng.com">tkriel@sustaineng.com</A><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">(608) 231-9664 ext.
16<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Sustainable Engineering Group,
LLC.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">431 Charmany Drive,
Suite 102</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=Arial
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Madison</SPAN></FONT></st1:City><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">, <st1:State
w:st="on">WI</st1:State> <st1:PostalCode
w:st="on">53719</st1:PostalCode></SPAN></FONT></st1:place><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A
href="http://www.sustaineng.com">www.sustaineng.com</A>
<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"><A
href="mailto:tkriel@sustaineng.com"></A> </SPAN></FONT><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="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV><pre>____________________________________________________________
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