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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Good afternoon Everyone,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Last night, I encountered two eQuest errors I’ve never
seen before. My project uses a chiller and boiler with 5 main VAV/reheat AHUs
for large main areas and about 25 fan-coil units for individual smaller
areas. Four of the 5 AHUs have enthalpy wheel heat recovery. There
are also 4 ERVs to supply tempered OA to the fan coils. I was
troubleshooting for too many hours outside throttling range when the first
error occurred (v3.6):</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<ol start=1 type=1>
<li class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When checking the reports, I noticed <i><span
style='font-style:italic'>“-nan</span></i>” in the BEPS, BEPU
& ES-D reports in the miscellaneous equipment and space cooling
electric columns. At first I assumed that there was an error that
caused excessive electric use for those categories. However, I
removed ALL miscellaneous equipment loads and schedules from the entire
project, reran the simulation and still had the <i><span style='font-style:
italic'>“-nan</span></i>” in the reports in both the
miscellaneous equipment and space cooling electric columns. I
re-entered my data and again saw no change in the sim reports. It
finally disappeared when I saved the project as a new file and
reran. Any ideas?</span></font></li>
</ol>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<ol start=2 type=1>
<li class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The second error occurred when I tried to add DCV to
AHU-3. I thought the simulation ran fine. However, when
checking the reports, I noticed that both space cooling and domestic hot
water use completely disappeared – not even zeros in the BEPS report
columns. I reran the simulation and ended up with 0’s for both
categories. When I removed the DCV, both categories came back.
What does domestic hot water use have to do with DCV in an Auditorium????
Again, any ideas?</span></font></li>
</ol>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks and have a nice day.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>Sheila Sagerer</span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>Energy Engineer, EIT, LEED AP</span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>Energy Opportunities, Inc, a 7group company</span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>Phone: 717-880-9069</span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>Fax: 717-291-9497</span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>www.sevengroup.com</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"> </font></p>
</div>
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