<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]--><o:SmartTagType
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Webdings;
panose-1:5 3 1 2 1 5 9 6 7 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
p
{mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’m modeling a hotel with ERUs that provide OA
directly to each guest room (at neutral conditions) in which a PTAC conditions
and recirculates the air at the design temperatures (72/75). I have the ERUs
providing OA to a dummy zone without internal loads at different temperatures
(76/89). My question is when the ERU is exhausting, how can I tell it to
exhaust the conditioned air from the guest rooms instead of the OA that it is
directly supplying to the dummy zone? My ERU should technically be exhausting air
around 76deg F, but I have a feeling that it would just be exhausting the same
temperature air that it is supplying to the dummy zone.<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’m also seeing a larger than expected summer heating
load on these units, which may or may not be caused by my question 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'>Any help would be much appreciated.<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'><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'><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'><o:p> </o:p></span></font></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 align=left
width=474 style='width:355.15pt'>
<tr height=16 style='height:11.95pt'>
<td width=212 height=16 style='width:158.75pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><b><font size=2 color=maroon face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:maroon;font-weight:bold'>Tracie
Monfort</span></font></b><o:p></o:p></p>
</td>
<td width=61 height=16 style='width:45.95pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><st1:place w:st="on"><b><font size=2 color=gray
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:gray;
font-weight:bold'>MAIN</span></font></b></st1:place><b><font size=2
color=gray face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:gray;font-weight:bold'>:</span></font></b><o:p></o:p></p>
</td>
<td width=201 height=16 style='width:150.4pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray'>(704) 348-2993</span></font><o:p></o:p></p>
</td>
</tr>
<tr height=16 style='height:11.95pt'>
<td width=212 height=16 style='width:158.75pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray'>LEED<sup>®</sup>
AP/Mechanical Designer</span></font><o:p></o:p></p>
</td>
<td width=61 height=16 style='width:45.95pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><b><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray;font-weight:bold'>FAX:</span></font></b><o:p></o:p></p>
</td>
<td width=201 height=16 style='width:150.4pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray'>(704) 348-2995</span></font><o:p></o:p></p>
</td>
</tr>
<tr height=16 style='height:11.95pt'>
<td width=212 height=16 style='width:158.75pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><a href="mailto:tracie.monfort@hesm.com"><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>tracie.monfort@hesm.com</span></font></a><o:p></o:p></span></font></p>
</td>
<td width=61 height=16 style='width:45.95pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><b><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray;font-weight:bold'>Cell:<o:p></o:p></span></font></b></p>
</td>
<td width=201 height=16 style='width:150.4pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray'>(770) 778-4229<o:p></o:p></span></font></p>
</td>
</tr>
<tr height=16 style='height:11.95pt'>
<td width=474 colspan=3 height=16 style='width:355.15pt;padding:0in 0in 0in 0in;
height:11.95pt'>
<p style='mso-element:frame'><b><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray;font-weight:bold'>HESM&A
Consulting Engineers, Inc.</span></font></b><font size=2 color=gray
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:gray'><o:p></o:p></span></font></p>
</td>
</tr>
<tr height=19 style='height:14.2pt'>
<td width=212 height=19 style='width:158.75pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><a href="http://www.hesm.com/" target=blank><b><font
size=2 color=gray face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:gray;font-weight:bold'>www.hesm.com</span></font></b></a><o:p></o:p></span></font></p>
</td>
<td width=61 height=19 style='width:45.95pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
<td width=201 height=19 style='width:150.4pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
</tr>
<tr height=19 style='height:14.2pt'>
<td width=212 height=19 style='width:158.75pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</td>
<td width=61 height=19 style='width:45.95pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
<td width=201 height=19 style='width:150.4pt;padding:0in 0in 0in 0in;
height:14.2pt'>
<p style='mso-element:frame'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
</tr>
<tr height=77 style='height:57.5pt'>
<td width=474 colspan=3 height=77 style='width:355.15pt;padding:0in 0in 0in 0in;
height:57.5pt'>
<p class=MsoNormal style='mso-element:frame'><font size=2 color=maroon
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:maroon'>"Engineering
the Built Environment"<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <img border=0
width=96 height=42 id="_x0000_i1025" src="cid:image001.jpg@01C9AE1D.971D1540"><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-element:frame'><strong><b><font size=5
color=green face=Webdings><span style='font-size:18.0pt;font-family:Webdings;
color:green;letter-spacing:1.0pt'>P</span></font><font color=black><span
style='color:black;letter-spacing:1.0pt'> </span></font></b></strong><font
size=2 color=green face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:green;letter-spacing:1.0pt'>Please consider the environment before
printing this email.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-element:frame'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</td>
</tr>
</table>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</body>
</html>