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<DIV><SPAN class=585485913-30092008><FONT face=Arial size=2>Does anyone know if 
it is possible to assign two air-side HVAC systems to one zone?  I am 
trying to simulate a Radiant Slab and a VAV system in a single 
zone.</FONT></SPAN></DIV>
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<P class=MsoNormal align=left><B><SPAN 
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Eric L. Kees </SPAN></B><SPAN 
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-weight: bold">| Mechanical 
Designer</SPAN><SPAN 
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><BR></SPAN><SPAN 
style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial"> <BR></SPAN><B><SPAN 
style="FONT-SIZE: 14pt; COLOR: green; FONT-FAMILY: Garamond">DURRANT  
</SPAN></B><I><SPAN 
style="FONT-SIZE: 12pt; COLOR: green; FONT-FAMILY: Garamond">Celebrating 75 
years in 2008!<BR></SPAN></I><SPAN 
style="FONT-SIZE: 8pt; COLOR: gray; FONT-FAMILY: Arial">400 Ice Harbor 
Drive | Dubuque, IA  52001<BR>T  563.583.9131 
ext 24010 | F  563.557.9078</SPAN></P>
<P class=MsoNormal align=left><SPAN 
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style="FONT-SIZE: 7.5pt; FONT-FAMILY: Arial"><BR></SPAN><SPAN 
style="FONT-SIZE: 8pt; FONT-FAMILY: Arial"><A 
href="http://www.durrant.com/"><B><SPAN 
style="COLOR: green">www.durrant.com</SPAN></B></A><BR><BR></SPAN><SPAN 
style="FONT-SIZE: 24pt; COLOR: green; FONT-FAMILY: Webdings">P</SPAN><SPAN 
style="FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: Arial">  </SPAN><SPAN 
style="FONT-SIZE: 7.5pt; COLOR: green; FONT-FAMILY: Arial"> <EM><SPAN 
style="FONT-STYLE: normal; FONT-FAMILY: Arial">Please consider your 
environmental responsibility before printing this e-mail.<BR 
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style="mso-special-character: line-break"></P></SPAN></EM></SPAN>
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