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</o:shapelayout></xml><![endif]--></head><body bgcolor=white 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'>Rob,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>There multiple LEED manuals for multiple LEED programs. LEED 2009 for Commercial Interiors credit EAc1.3 Optimize Energy Performance – HVAC does reference the Energy Cost Budget Method. Previous versions of LEED NC & CI have also referenced the ECB method.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I did not see if you stated which LEED version applies but that will be important.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Good luck,<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 style='text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:#5F574F'>Paul Riemer, PE, LEED AP BD+C</span></b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-family:"Verdana","sans-serif";color:#C00000'>DUNHAM</span></b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#C00000'><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";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Patrick J. O'Leary, Jr.<br><b>Sent:</b> Thursday, December 01, 2011 8:11 AM<br><b>To:</b> Reba Schaber<br><b>Cc:</b> bldg-sim@lists.onebuilding.org; Fred Betz<br><b>Subject:</b> Re: [Bldg-sim] LEED Kitchen/Laundry HVAC Systems<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>just as a reminder on using interpretations for 90.1 Chapter 11, which is the Energy Cost Budget (ECB) method, that Chapter 11/ECB methodology is not acceptable for leed projects.<br><br>per the leed 3.0 manual (page 263, section 4, last sentence of 1st paragraph):<br><br>"A model using the energy cost budget method will not be accepted."<br><br>per the leed 2.2 manual, page 177, left column, 2nd full paragraph, last sentence,<br><br>"A model using the Energy Cost Budget Method will NOT be accepted for credit under EA Credit 1."<br><br><br>On 11/21/11 8:06 PM, Reba Schaber wrote: <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I don’t have anything from USGBC, but I have some history from ASHRAE. There are a series of interpretation requests to ASHRAE 90.1 about how handle AC systems serving primarily process loads. It is clear that ASHRAE considers AC systems serving primarily process loads exempt from requirements of ASHRAE 90.1. Since they don’t have to meet minimum efficiencies, they need to be modeled the same when demonstrating compliance with ASHRAE 90.1. See interpretation 4 about a theoretical central plant that is used mainly for IT cooling.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>“The central plant is exempt from the requirements of Standard 90.1 and should be identical in both the Proposed Building Design and Budget Building Design.“<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The interpretation is worded for Chapter 11, which is another means to show compliance to the standard. However it is interesting to note they are no longer applying this interpretation to Appendix G of 90.1-2007. This seems like a logical progression sense Appendix G is meant to show energy efficiency not compliance.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>“This interpretation also applies to Section 11 of 90.1-2007 as well as Appendix G of 90.1-2004 but does not apply to Appendix G of 90.1-2007.“<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Perhaps that knowledge may be helpful. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>~Reba<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>