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<TITLE>Dual duct vav OA control</TITLE>
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<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">In the dual duct system, is</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> OA sent to</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> space only</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">through</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> cold deck, or it is in the same ratio</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">(oa/total supply air)</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">through</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">hot/cold deck.</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">From</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> engineering manual it seems to be the later, but if one looks at the hourly data, it</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> looks</FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">like the</FONT></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"></FONT></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">cold deck flow (during heating) in a zone is based on how much OA is needed in that zone.</FONT></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Rohini</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
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