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<title>eQuest - FCU - how to make it cycle</title>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hello All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I used eQuest 3.61b to modify a file
created from eQuest 3.61. I am trying to open this modified file in eQuet 3.6
again and I get the following error.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Does anyone have any prior experience with
this?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Any help very much appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks, Shruti<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'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Aulbach, John<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 24,
2008 11:44 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Yuvaraj Saravanan;
equest-users-bounces@lists.onebuilding.org; bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] eQuest -
FCU - how to make it cycle</span></font><o:p></o:p></p>
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12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>I believe a cycling type of fan shuts off
when the space temperature falls below the <st1:place w:st="on"><st1:PlaceName
w:st="on">Throttling</st1:PlaceName> <st1:PlaceType w:st="on">Range</st1:PlaceType></st1:place>
you assign for the particular mode (Heating or Cooling) you are in. For
example, a cooling thermostat of 72°F and a throttling range of 4°F yields a
high limit of 74°F and a low limit of 70°F. When you fall within this
range, I believe the fan should shut off (if you choose the Fan Intermittent
mode).There should be no airflow.</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=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>But now I am unsure if ALL SYSTEMS allow
fan cycling..I believe you can with a fan coil.</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=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>The other responder is correct in that
eQuest deals in hourly chunks, and a fan may only be on part of an hour, thus a
lower CFM, but in reality, the same CFM for only part of the hour.</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 color=blue face="Times New Roman"><span
style='font-size:12.0pt;color:blue'>John R. Aulbach, PE, CEM</span></font><o:p></o:p></p>
<p class=MsoNormal><em><i><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Project Manager</span></font></i></em><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Nexant, Inc</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>.</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>701 West Kimberly
Ave., Suite 245</span></font></st1:address></st1:Street><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Placentia</span></font></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>, <st1:State
w:st="on">CA</st1:State> <st1:PostalCode w:st="on">92870-6342</st1:PostalCode>
<st1:country-region w:st="on">USA</st1:country-region></span></font></st1:place><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Phone: 714-524-4402</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Fax: 714-524-4407</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>email: <a href="mailto:jaulbach@nexant.com"
title="mailto:jaulbach@nexant.com">jaulbach@nexant.com</a></span></font><o:p></o:p></p>
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12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><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'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Yuvaraj Saravanan<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 24,
2008 10:57 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users-bounces@lists.onebuilding.org; bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] eQuest - FCU -
how to make it cycle</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><!-- Converted from text/rtf format -->Hi
All,</span></font> <br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Does
anyone know how to make a FCU cycle ON/OFF based on the zone thermostat
setting? I tried choosing the "Fan on mode" to be intermittent in the
Fan->Flow parameters tab. When I make the fan to be intermittent, fan is
cycling but the supply CFM is no more a constant volume. It is varying the
supply CFM. I observed this in the hourly report.</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>ASHRAE
standard 90.1 requires the fan to cycle to meet the loads during unoccupied
hours. How everybody model this in eQuest when you have a FCU system?</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Any
suggestions is greatly appreciated.</span></font> <o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Regards,</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Yuvaraj</span></font>
<br>
<font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>_<font
color=black><span style='color:black'>_____________________________________________</span></font></span></font>
<br>
<st1:place w:st="on"><st1:City w:st="on"><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'>Yuvaraj Saravanan</span></font></st1:City><font
size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'>, <st1:State w:st="on">PE</st1:State></span></font></st1:place> <br>
<font size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:black'>Engineer</span></font> <o:p></o:p></p>
<p><font size=2 color=black face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:black'>Arup </span></font><br>
<font size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:black'>12777 West Jefferson Boulevard Suite 200</span></font> <br>
<font size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:black'>Los Angeles CA 90066</span></font> <br>
<font size=1 color=black face=Arial><span style='font-size:7.5pt;font-family:
Arial;color:black'>tel: 1 310 578 4400</span></font> <br>
<font size=1 color=black face=Arial><span style='font-size:7.5pt;font-family:
Arial;color:black'>dir: 1 310 578 4521</span></font> <br>
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<font size=1 color=black face=Arial><span style='font-size:7.5pt;font-family:
Arial;color:black'>yuvaraj.saravanan@arup.com</span></font><br>
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style='font-size:10.0pt;font-family:Arial'>www.arup.com</span></font></a> <o:p></o:p></p>
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<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'>____________________________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Electronic mail messages entering and leaving Arup business<o:p></o:p></span></font></pre><pre><font
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