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</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'>Steven, see Table G3.2 of 90.1. Ramana is correct that you can apply reductions in connected lighting density for occupancy sensors in those spaces that do not need them (but have them).<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'>Ramana, to answer your question, the LPDs for the baseline model should not be adjusted per Steven's quote of Table 3.1.<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><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:teal'>GHT Limited<br></span></b><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>James Hansen, P.E., LEED AP</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>Senior Associate<br>1010 N. Glebe Road, Suite 200<br>Arlington, VA 22201-4749<br>703-243-1200 (office)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>703-338-5754 (cell)<br>703-276-1376 (fax)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="http://www.ghtltd.com/" title="http://www.ghtltd.com/">www.ghtltd.com</a></span><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"'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Steven Savich<br><b>Sent:</b> Thursday, December 01, 2011 12:35 PM<br><b>To:</b> 'Ramana Koti'; 'Bldg-Sim'<br><b>Subject:</b> Re: [Bldg-sim] ASHRAE 90.1 Baseline LPD and occupancy sensor credit<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ramana,</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>90.1-2007 Table G3.1 section 6 under Baseline Building Performance states: " . . . No automatic lighting controls (e.g. programmable controls or automatic controls for daylight utilitzation) shall be modeled in the <i>baseline building design</i>, as the lighting schedules used are understood to reflect the mandatory control requirements in this standard."</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You should not be adjusting the power density number to simulate lighting controls, but adjusting the schedules to reflect occupancy sensor operation. For example, say there are a number of offices and conference rooms in the proposed building that will have occupancy sensor controls. This should be simulated by inputting the LPD or actual connected load, and creating a schedule with a 10% - 15% reduction for each hour of operation per Table G3.2. In the LEED baseline model, the schedule for the offices would be not have the occupancy sensor reduction, but the conference room and other spaces required by 90.1 to have occupancy sensor control would use the reduced schedule. Clear as mud?</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Steven</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><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"'> <a href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a> [<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Ramana Koti<br><b>Sent:</b> Thursday, December 01, 2011 8:21 AM<br><b>To:</b> Bldg-Sim<br><b>Subject:</b> [Bldg-sim] ASHRAE 90.1 Baseline LPD and occupancy sensor credit</span><o:p></o:p></p></div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal>All,<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>This question pertains to a LEED energy model per the ASHRAE 90.1 Appendix G. Occupancy sensors are required in spaces such as conference rooms and employee lunch/break rooms per Section 9.4.1.2 and no lighting power density credit can be taken for their use in the proposed design model.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>My question is, do the baseline maximum LPDs prescribed by ASHRAE, say 1.3 W/sf for conference rooms, already account for the power 10 or 15% adjustment for occupancy sensor use or does the credit have to be manually applied on top of the 1.3 W/sf in the Baseline model?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Thank you,<o:p></o:p></p></div><div><p class=MsoNormal>Ramana Koti.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div></div><P align=left><FONT size=2><FONT face=Tahoma><FONT color=#0000ff>
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