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<p class=MsoNormal><span style='color:#1F497D'>Good morning Terry-<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>One very common problem that
causes unmet load hours during heating is not using a minimum OA schedule to eliminate
OA during unoccupied times.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Also, you should check your fan
and heat temperature schedules for consistency; i.e. for each hour that has an
occupied temperature setting, the fan must be set to "1".<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>In addition, if using night
set-back, you should also use an optimum start for 2-3 hours before occupancy to
bring the temperature back up to the occupied setting in smaller increments.
Using optimum start affects both the temperature schedule and the fan schedule.
And, the min OA schedule should have a "0" during any optimum start
hours so that no outside air is brought in while bringing the temperature back
up to occupied settings. Keep in mind that a zero in the min OA schedule will
disable the economizer. If economizer use is desired, the unoccupied hours
should be set to 0.0001 to limit the OA when not desired but still allow the
economizer if conditions are favorable.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Hope this helps.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Have a nice day.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#76923C'>Sheila Sagerer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#76923C'>Energy Engineer, EIT, LEED AP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#76923C'>Energy Opportunities, Inc, a 7group company<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#76923C'>Phone: 717-880-9069<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#76923C'>www.sevengroup.com<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Terry
Budd<br>
<b>Sent:</b> Monday, May 10, 2010 8:58 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Heat not working!<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I'm modeling a building and for some reason I can't get the
heat to turn on. The building is a VRF system - we are tricking a heat pump
system into a VRF system per BSUG directions (attached).<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I've attached the model file. Can someone take a look and
see what I did wrong?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>-Terry<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b><span style='font-size:13.5pt;color:#1F497D'>Terrence W.
Budd, P.E., CPD, LEED AP<o:p></o:p></span></b></p>
<p class=MsoNormal><b><o:p> </o:p></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Lee S. Good
Engineering<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>10483 Cleveland
Ave NW<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'>Uniontown, Ohio
44685<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:#1F497D'>Phone:
330.494.1574 Fax:330.494.1567<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:13.5pt;font-family:Webdings;
color:#008040'>ü</span><span style='color:black'> </span><span lang=EN-GB
style='font-size:7.5pt;color:green'>Please consider the environment before printing
this e-mail.</span><span style='color:#4F6228'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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