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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Try a system type of IU, with the induction ratio matching that
of the FCs. The main system then needs to be set to 100% OA with constant cool
and heat control set to 68F. You will have to fake in extra fan power to match
that of the FCs. Hope this helps.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-family:"Arial","sans-serif";color:#1F497D'>Josh</span></b><span
style='color:#1F497D'><o:p></o:p></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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Verena
Kindl<br>
<b>Sent:</b> Tuesday, September 01, 2009 3:15 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] oa from system<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I have a SZRH system which should provide outside air to the FC
system. The air it provides should always be 68 F. What temperatures shall I
put for cooling design and heating design / thermostat setpoint T. I put min
supply temp and max supply temp to 68 F and the other design temperatures to
53/90F cause I do not have a thermostat there ( the air is always provided with
68 F). Then I specified the OA constant to 4000 cfm and determined the min
outside air ratio =1. Is there sth wrong with my temperature settings as I do
not get any coil loads for the system (SS-J report)? When I set all
temperatures to 68 F the ventilation air I require is too huge. Do I have to
put the min OA ratio to 1, 0 or shall I leave it blank for the FC system? I
mean is it enough to put OA from system SZRH? Cause someone told me I have to
put it to 0 as I do not have any outside air put I do it is from the system. I
am confused. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Thanks for your help.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Verena<o:p></o:p></span></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
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