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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have reverse action set, a range of 6 degrees, night
cycling set to “cycle on any,” and a 20 degree delta T. You’re
right, those usually do the trick, that’s why I’m so stumped. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Amber Welsh
[mailto:amber@timmonsdesigneng.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, July 21, 2010
1:28 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Martz, Amanda<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Equest-users] Ashrae
Baseline Model & Unmet loads</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Amanda,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>When I first had
these problems it had to do with fan control and night cycling. Make sure
that your fans are cycling. Next, check to make sure that you have a
minimum delta T of 20 between room set point and supply air temperature.
These are the 2 biggest things affecting the unmet hours.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Amber<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Martz, Amanda<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, July 21, 2010
1:22 PM<br>
<b><span style='font-weight:bold'>To:</span></b> equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] Ashrae
Baseline Model & Unmet loads<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have several VAV units with reheat serving several zones
in my Ashrae baseline model. It is autosizing all of the capacities, so why
would I have unmet loads? I have cooling and heating set to size at 1.15 and
1.25 as Ashrae states, and I have cooling control set to “warmest.”
I’m sure it is a control issue, but I can’t figure out what exactly
it is. I attached my model, any help would be very greatly appreciated!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='line-height:15.0pt'><font size=1 face="Arial Black"><span
style='font-size:8.0pt;font-family:"Arial Black"'>Amanda E. Martz, EIT, LEED AP</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt;line-height:15.0pt'><font
size=1 face="Arial Black"><span style='font-size:8.0pt;font-family:"Arial Black"'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal style='line-height:15.0pt'><font size=1 color=black
face="Arial Black"><span style='font-size:8.0pt;font-family:"Arial Black";
color:black'>KlingStubbins</span></font><o:p></o:p></p>
<p class=MsoNormal style='line-height:15.0pt'><st1:Street w:st="on"><st1:address
w:st="on"><font size=1 face=Arial><span style='font-size:8.0pt;font-family:
Arial'>2301 Chestnut Street</span></font></st1:address></st1:Street><br>
<st1:place w:st="on"><st1:City w:st="on"><font size=1 face=Arial><span
style='font-size:8.0pt;font-family:Arial'>Philadelphia</span></font></st1:City><font
size=1 face=Arial><span style='font-size:8.0pt;font-family:Arial'>, <st1:State
w:st="on">Pennsylvania</st1:State></span></font></st1:place><br>
<font size=1 face=Arial><span style='font-size:8.0pt;font-family:Arial'>19103<o:p></o:p></span></font></p>
<p class=MsoNormal style='line-height:15.0pt'><font size=1 face=Arial><span
style='font-size:8.0pt;font-family:Arial'>P 215.569.2900, ext. 3612</span></font><o:p></o:p></p>
<p class=MsoNormal style='line-height:15.0pt'><font size=1 face=Arial><span
style='font-size:8.0pt;font-family:Arial'>F 215.569.5963<br>
E <a href="mailto:amartz@klingstubbins.com">amartz@klingstubbins.com</a> <br>
W <a href="http://www.klingstubbins.com/">www.klingstubbins.com</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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