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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Christopher,</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ve been working through issues with this same message,
and here is what I have found so far:</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The entering water temperature comes from the chilled water loop
“Design CHW Temp” value.</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The cooling coil temperature comes from the HVAC system’s “Cooling”
tab, the “Coil Cap/Control” subtab, the “Cold Deck Min
Leaving Temp” value.</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>A related issue that I have found is that if you specify the “Zone
Entering Min Supply Temp” on the same tab and subtab, and if you specify
a Supply Delta T on the “Fans” tab “Fan Power and Control”
subtab, then the program will give you the same error message if the “Zone
Entering Min Supply Temp” minus the “Supply Fan Delta T” is
less than 6 degrees greater than the “Design CHW Temp” value.</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It would be nice if there were two separate message for these conditions.
It would also be nice if this error could be made into a warning instead, since
we occasionally have a 5 degree difference on coils with large numbers of coil
rows.</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I hope this helps.</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jason Schaeffer</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>CRB Consulting Engineers</span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Christopher
Sturdivant<br>
<b>Sent:</b> Friday, March 07, 2008 2:39 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Cooling coil temperature in e-quest - [SPAM-CRB]
Email found in subject</span></p>
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<p class=MsoNormal> </p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Hello all,</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>When I try to
perform a simulation of my building I get an error message that says
“cooling coil temperature must be at least 6F higher than entering water
temp.” I am using a single zone air handler with electric heating
that is on a chilled water loop, and in the building creation wizard under this
unit it doesn’t ask anything specific about entering and leaving water
temperatures. I trying to find the window that I need to make this change
in so I can run the simulation. Thanks for any kind of help that you can
provide.</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Christopher
Sturdivant</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Design
Engineer-Mechanical</span></p>
<p class=MsoNormal> </p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>RMF
Engineering, Inc.</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Ph:
843-971-9639 ext. 110</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Fax:
843-971-9641</span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:black'><a href="mailto:csturdiv@rmf.com">csturdiv@rmf.com</a></span></p>
<p class=MsoNormal> </p>
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