<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:m="http://schemas.microsoft.com/office/2004/12/omml" 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 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Eras Medium ITC";
panose-1:2 11 6 2 3 5 4 2 8 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Everyone,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am having issues with zoning for a LEED energy model. I am working on a 15 story apartment building where all the residential spaces are conditioned primarily by PTACs with hot water coils. The problem comes in with the addition of supplementary unit heaters with separate thermostats in all the bathrooms and kitchens along the building exterior.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now how can I account for the zoning and heating and cooling for the space to most accurately reflect these conditions. The bathroom is a separate room with a door so making a separate zone for it is reasonable, but the kitchen is part of the living room that is being conditioned with a PTAC. If I do separately zone all the kitchen and bathrooms I will have to add cooling to the spaces and this will have to match the ASHRASE 90.1 APP G baseline in accordance with LEED. However, the PTACs are sized to meet loads for the entire space, the living room, kitchen and bathroom, so in theory I might not need to include the unit heaters at all. If I do not separate out any of the zones and add the unit heaters, as baseboard heating, this will not accurately reflect energy usage since baseboard heating is used before system heating.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Does anyone have any thoughts or experience with this kind of issue?<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><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><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Richard Auffermann</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Design Engineer<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Eras Medium ITC","sans-serif";color:#1F497D'>DAGHER ENGINEERING,</span><span style='font-size:11.0pt;font-family:"Eras Medium ITC","sans-serif";color:#1F497D'> PLLC</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>29 Broadway, New York, NY 10006<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>T. 212.480.2591 x122<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>F. 212.480.2654<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="mailto:rauffermann@dagherengineering.com"><span style='color:blue'>rauffermann@dagherengineering.com</span></a></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>www.dagherengineering.com<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><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#006600'>Save Trees, Consider the Environment. Please print only when necessary.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='text-align:justify'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'>This email and any attachments may contain confidential or proprietary information and use or distribution is strictly prohibited. If you are not the intended recipient, please notify us and delete. Dagher Engineering, PLLC has no responsibility for errors or discrepancies that may occur in the electronic transmission of data.<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></div></body></html>