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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'>Hi Byron,<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'>I did look at the system types, and have
attached the descriptions from the users manual. The two system types I
tried modeling are the only ones that I see would apply to what I’m
modeling.<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>
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<p class=MsoNormal><st1:PersonName w:st="on"><strong><b><font size=3
color="#585858" face="GoudyOlSt BT"><span style='font-size:12.0pt;font-family:
"GoudyOlSt BT";color:#585858'>Matt Larson</span></font></b></strong></st1:PersonName><font
size=2 color="#585858" face="GoudyOlSt BT"><span style='font-size:10.0pt;
font-family:"GoudyOlSt BT";color:#585858'>, P.E., QCxP, LEED AP</span></font><font
color=navy><span style='color:navy'><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'> Byron Burns
[mailto:B.Burns@ha-inc.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, February 18, 2014
3:30 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Matt
Larson</st1:PersonName>; equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: Variable Volume Help
Needed!</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'>Hello Matt,<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'>It sounds like you
are converting it to a PVVT system, have you looked into the eQUEST definitions
for that unit type?<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=1 color="#1f497d"
face=Arial><span style='font-size:9.0pt;font-family:Arial;color:#1F497D'><br>
</span></font><b><font size=2 color="#1f497d" face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:#1F497D;font-weight:bold'>Byron
D. Burns, EIT, BEMP</span></font></b><font size=1 color="#1f497d" face=Arial><span
style='font-size:9.0pt;font-family:Arial;color:#1F497D'> <br>
</span></font><font size=2 color="#666666" face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:#666666'>Energy Analyst/ Modeler</span></font><font
size=1 color="#1f497d" face=Arial><span style='font-size:9.0pt;font-family:
Arial;color:#1F497D'> <br>
<br>
<b><span style='font-weight:bold'>H&A Architects & Engineers</span></b> | <a
href="http://www.ha-inc.com"><font color="#006c67"><span style='color:#006C67'>www.ha-inc.com</span></font></a>
<br>
<b><span style='font-weight:bold'>d:</span></b> (804) 420-1622 <b><span
style='font-weight:bold'>p:</span></b> (804) 285-4171 <b><span
style='font-weight:bold'>f:</span></b> (804) 217-8520 </span></font><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><st1:PersonName w:st="on">Matt Larson</st1:PersonName><br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, February 18, 2014
5:24 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] Variable
Volume Help Needed!<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 am modeling a building with an existing single zone 4-pipe
chilled and hot water air handler unit that is currently constant volume but
being converted to constant volume. The unit feeds many spaces through a
single duct. I modeled the system as a single zone with heat (SZRH)
system and tried to add in a variable speed drive and lower the minimum flow
ratio, but can’t get the fan speed to reduce when not needing 100%
flow. I also tried modeling the system as a variable volume system (VAVS)
and the airflow ramps down but then the program adds a VAV box for each zone,
which isn’t what is occurring. I am trying to control only to the
worst case zone, as will be the installed case. <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><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Which system type should I be using for modeling this
system, and how do I get it to model as noted above?<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><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I appreciate any help! Thanks,<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><st1:PersonName w:st="on"><strong><b><font size=3
color="#585858" face="GoudyOlSt BT"><span style='font-size:12.0pt;font-family:
"GoudyOlSt BT";color:#585858'>Matt Larson</span></font></b></strong></st1:PersonName><font
size=2 color="#585858" face="GoudyOlSt BT"><span style='font-size:10.0pt;
font-family:"GoudyOlSt BT";color:#585858'>, P.E., QCxP, LEED AP</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>
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