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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi Kevin,<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'>Browsing the Bldg-rate archives, your question caught my eye
and I wanted to find the answer myself since I often design with more complex
system than simply “auto-on/off.”<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'>Here is an excerpt of a LEED CIR dated 4/25/2007. I believe
it (indirectly) answers your question:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>QUESTION<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=3 face="Times New Roman"><span style='font-size:
12.0pt'>6. Lighting Controls<br>
Will USGBC for LEED 2.2. allow Exceptional Calculations regarding energy
savings for occupancy sensor and time-of-day controls that exceed ASHRAE 90.1
code requirements that are greater than the Appendix G Table G3.2. For example,
LEED 2.1 rulings appeared to allow greater than 10% allowed by Appendix G for
occupancy sensors controlling normally 24 hour interior stair lighting in a
multi-family high-rise that would be occupied only a small fraction of the time.
<br>
</span>...”<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>RESPONSE<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=3 face="Times New Roman"><span style='font-size:
12.0pt'>6. Exceptional Calculation for any measure that is not accounted for in
the modeling protocol is accepted on a case-by-case basis.</span></span></font><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'>I think anyone would concede that “vacancy sensors”
(manual on, automatic off) would certainly result in less energy usage than a
simple occupancy sensor (automatic on, automatic off) in spaces with
significant daylighting. The trick is, on foundation might you base your
assumption of an additional 10% power adjustment? <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 would personally be very interested if anyone is aware of
a study or literature containing a figure (like the 10% assumption) that we
could refer to in order to account for the additional savings when the end-user
must manually turn on the lights in a space! <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'>~Nick<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><b><font size=3 color="#2d4d5e" face="Stylus BT"><span
style='font-size:12.0pt;font-family:"Stylus BT";color:#2D4D5E;font-weight:bold'>NICK
CATON, E.I.T.<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color="#cc9900" face="Times New Roman"><span
style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face="Times New Roman"><span
style='font-size:10.0pt;color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
color="#2d4d5e" face="Times New Roman"><span style='font-size:10.0pt;
color:#2D4D5E'>olathe</span></font></st1:City></st1:place><font size=2
color="#2d4d5e"><span style='font-size:10.0pt;color:#2D4D5E'> ks 66061<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face="Times New Roman"><span
style='font-size:10.0pt;color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#2d4d5e" face="Times New Roman"><span
style='font-size:10.0pt;color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></font></p>
<p class=MsoNormal><i><font size=2 color="#2d4d5e" face="Times New Roman"><span
style='font-size:10.0pt;color:#2D4D5E;font-style:italic'>Check out our new
web-site @ </span></font></i><font color="#1f497d"><span style='color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><font size=2><span
style='font-size:10.0pt'><span title="blocked::www.smithboucher.com">www.smithboucher.com</span></span></font></a></span></font><u><font
size=2 color=blue><span style='font-size:10.0pt;color:blue'> </span></font></u><font
size=2 color="#1f497d" face=Calibri><span style='font-size:11.0pt;font-family:
Calibri;color:#1F497D'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<h1><b><font size=6 face="Times New Roman"><span style='font-size:24.0pt'>[Bldg-rate]
Occupany/Vacancy Sensors for Lighting Power<o:p></o:p></span></font></b></h1>
<p class=MsoNormal><b><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-weight:bold'><!--htdig_noindex-->Kevin Kyte</span></font></b>
<br>
<i><span style='font-style:italic'>Thu Apr 30 07:16:50 PDT 2009</span></i> <o:p></o:p></p>
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<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'><!--/htdig_noindex--><!--beginarticle-->Is anyone aware of a CIR or received approval for using vacancy lighting sensors on a LEED project. Meaning the sensor works like an occupancy sensor but does not turn lights on until the user flips the switch. Then the lights automatically turn off after sensing no occupancy for a time. If so, what is the approved percentage deduction off of light power density. I was assuming an additional 10% over regular occupancy sensors but have been told the savings could really be a lot higher than that. Thanks.<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Kevin<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>________________________________<o:p></o:p></span></font></pre><pre><font
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