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<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff
size=2>Kendra,</FONT></SPAN></DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff size=2>I am
not sure how you've got your systems setup but you shouldn't need to use the Min
OA Schedule to force the OA to 100% in the summer. I have found that the
best way to simulate Dir/Ind systems is to use the keyowrds on the
Pre-Conditioner tab under your HVAC system as opposed to using the DIR/IND
System Type (check the DOE 2.2 documentation for the differences). One of
the keywords is EVAP-CLR-AIR which describes the % of supply air that will pass
through the DIR/IND. Set this to 1.0, then set the keyword DRYBULB-LIMIT
to some high value like 130 (default is 120). Anytime the outside air temp
is below DRYBULB-LIMIT and above your SAT the DIR/IND will use 100%
OA.</FONT></SPAN></DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff size=2>The
nice thing about using the DIR/IND on the pre-conditioner tab versus the DIR/IND
system type is you can set up all the keyword variables and then turn
it on and off using a parametric run. </FONT></SPAN></DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098115713-18082006><FONT face=Arial color=#0000ff
size=2>Mike</FONT></SPAN></DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=en-us><B><FONT face=Arial size=2>Michael Tillou, PE<BR>etc Group,
Inc.<BR>PO Box 7, Williamstown, MA 01267<BR>ph. (413) 458-9870 fx. (413)
458-9875<BR></FONT></B></SPAN></P>
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<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
BLDG-SIM@GARD.COM [mailto:BLDG-SIM@GARD.COM] <B>On Behalf Of </B>Tupper,
Kendra<BR><B>Sent:</B> Thursday, August 17, 2006 7:24 PM<BR><B>To:</B>
BLDG-SIM@GARD.COM<BR><B>Subject:</B> [BLDG-SIM] Using -999 in Min OA Schedule
in eQuest<BR><BR></FONT></DIV><!-- Converted from text/rtf format -->
<P align=left><SPAN lang=en-us><FONT face=Arial size=2>I am trying to simulate
the following system:</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial size=2>A DX cooler with VAV
(HW reheat) that uses 100% outside air and an indirect/direct evap cooler in
the cooling months (the climate is Las</FONT></SPAN><SPAN
lang=en-us></SPAN><SPAN lang=en-us> <FONT face=Arial
size=2>V</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN lang=en-us><FONT
face=Arial size=2>egas</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN lang=en-us>
<FONT face=Arial size=2>–</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN
lang=en-us><FONT face=Arial size=2> very</FONT> <FONT face=Arial size=2>hot
and dry).</FONT> <FONT face=Arial size=2> I</FONT><FONT face=Arial
size=2>n the winter, the outside air should be at a minimum as determine by
the OA/person specified at the zonal level.</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial size=2>I created a
Minimum</FONT> <FONT face=Arial size=2>OA Schedule and set the fraction to 1.0
for the cooling months. I</FONT><FONT face=Arial size=2>n the help menu,
and in the DOE2.2 documentation, it says to set the</FONT></SPAN><SPAN
lang=en-us></SPAN><SPAN lang=en-us> <FONT face=Arial
size=2>schedule</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN lang=en-us><FONT
face=Arial size=2></FONT> <FONT face=Arial size=2>value to -999 when you want
the fraction to revert to the minimum calculated OA.</FONT></SPAN><SPAN
lang=en-us></SPAN><SPAN lang=en-us> <FONT face=Arial size=2>
W</FONT><FONT face=Arial size=2>hen</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN
lang=en-us> <FONT face=Arial size=2>I</FONT></SPAN><SPAN
lang=en-us></SPAN><SPAN lang=en-us><FONT face=Arial size=2></FONT> <FONT
face=Arial size=2>tried to</FONT> <FONT face=Arial size=2>enter -999, I get an
error saying that negative values are</FONT></SPAN><SPAN
lang=en-us></SPAN><SPAN lang=en-us> <FONT face=Arial size=2>n</FONT><FONT
face=Arial size=2>ot</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN
lang=en-us><FONT face=Arial size=2> accepted.</FONT> <FONT face=Arial
size=2> I</FONT><FONT face=Arial size=2> tried changing this in the input
file, but when I open the file in eQuest, I receive errors as
well.</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial size=2>Does anyone know how to
get eQuest to acce</FONT><FONT face=Arial size=2>pt the -999 value in the
minimum OA schedule?</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial size=2>Thank
you!</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial
size=2>Kendra</FONT></SPAN><SPAN lang=en-us></SPAN><SPAN
lang=en-us></SPAN></P>
<P align=left><B><SPAN lang=en-us></SPAN></B><A name=""><B><SPAN
lang=en-us></SPAN><SPAN lang=en-us><FONT face=Arial color=#333333>Kendra
Tupper</FONT></SPAN></B></A></P>
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lang=en-us></SPAN><SPAN lang=en-us></SPAN><SPAN lang=en-us>
</SPAN></P>
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lang=en-us><B><SUB></SUB></B></SPAN><B><SUB><SPAN lang=en-us>
</SPAN></SUB></B></P>
<P align=left><SPAN lang=en-us><FONT face=Arial color=#333333 size=2>405
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<P align=left><SPAN lang=en-us><FONT face=Arial size=2><A
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lang=en-us></SPAN><SPAN lang=en-us></SPAN><SPAN
lang=en-us> </SPAN><SPAN lang=en-us> </SPAN><A
href="mailto:kendra.tupper@sf.fk.com"><SPAN lang=en-us></SPAN><SPAN
lang=en-us><U></U></SPAN><U><SPAN lang=en-us></SPAN></U><U><SPAN
lang=en-us><FONT face=Arial color=#0000ff
size=2>kendra.tupper@sf.fk.com</FONT></SPAN></U><SPAN
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lang=en-us><U></U></SPAN><U><SPAN lang=en-us></SPAN></U></P>
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