<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 12 (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]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Franklin Gothic Medium";
panose-1:2 11 6 3 2 1 2 2 2 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;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Arial","sans-serif";
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Brendan,<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:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Based on building type, it sounds like you’ve determined that your LEED/Appendix G baseline system is either System 5 or 6.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If the proposed system is designed with a boiler loop connected only for “backup” – primary system failure, maintenance, or future expansion – then Electric and Other – System 6.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If the proposed system is designed with a boiler to meet peak heating loads beyond the capacity of the heat pumps, then you have Fossil/Electric Hybrid or Purchased Heat – System 5.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If System 5, AND if you believe your boiler system is a District or Campus Energy System (DES) per the “Treatment of District or Campus Thermal Energy…” document, AND if you use Option 1 per said document, AND if you have District Heating only per Table 3, then no changes are required to the Appendix G baseline system – System 5.<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:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Bill<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><p class=MsoNormal><a href="mailto:wbishop@pathfinder-ea.com"><b><span style='font-size:10.0pt;font-family:"Franklin Gothic Medium","sans-serif";color:black;text-decoration:none'><img border=0 width=481 height=118 id="Picture_x0020_1" src="cid:image001.png@01CCA505.90715DF0"></span></b></a><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></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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>Hall, Brendan<br><b>Sent:</b> Wednesday, November 16, 2011 3:25 PM<br><b>To:</b> equest-users<br><b>Subject:</b> [Equest-users] District Heating / System Type<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Long time listener, first time caller. I have a gray area in what system I should be using for my baseline and wanted to poll the general consensus. I have a building addition where my proposed system is electric heat pumps with supplemental heat from a natural gas boiler for when it is real cold / peak heating load. My first thought is that it should be a fossil / hybrid system (Sys 5). However this boiler that I am using as a backup is the primary heat for the existing building, and is across the LEED boundary. If I use option 1 of the district heating guidelines it says I should treat this heat from the boiler as purchased heat. If I do that do I need to change my baseline system to electric only heat? Thanks.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Calibri","sans-serif"'>Brendan Hall, </span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>M.Sc., LEED AP BD+C<br></span><span style='font-family:"Calibri","sans-serif"'>Engineer, Mechanical</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:13.5pt;font-family:"Arial","sans-serif";color:red'>karpinski<br></span><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>ENGINEERING<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>3135 Euclid Avenue</span><br><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>Cleveland, OH 44115</span><br><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>P</span></b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> 216.391.3700 x 3111<o:p></o:p></span></p><p class=MsoNormal><b><span lang=SV style='font-size:10.0pt;font-family:"Calibri","sans-serif"'>E </span></b><span lang=SV style='font-size:10.0pt;font-family:"Calibri","sans-serif"'> </span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><a href="mailto:bhall@karpinskieng.com"><span lang=SV style='color:windowtext;text-decoration:none'>bhall@karpinskieng.com</span></a></span><span lang=SV style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><br><b>W</b> www.</span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><a href="http://www.karpinskieng.com/" title="http://www.karpinskieng.com/"><span lang=SV style='color:windowtext;text-decoration:none'>karpinskieng.com</span></a></span><span lang=SV style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>