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<p class=MsoNormal><span style='color:#1F497D'>Hi Will!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We were almost burned hard
specifying and approving Liebert for a LEED project under similar circumstances.
Despite their large presence for a niche market, their efficiencies aren’t
entirely up to snuff with today’s commercial energy codes. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>We ultimately avoided having to
send the equipment back (and foot the bill) in that case, but only because we
were able to reason with both the local 90.1-compliance, LEED reviewers and
other parties in play that this was a reality of the industry we had to live
with. We did not attempt to “dodge” the code per the advice you
were given below, but I do feel we were lucky. It takes no stretch of the
imagination to picture an uncooperative AHJ/reviewer striking this down. The
building altogether was an impressive performer, to be sure, but these isolated
data room units left a sour taste. I will personally think hard about compliant
alternatives before falling back to designing around Liebert for future LEED work.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>That said, the approach given
below is a new one to me. I also tend to model the proposed systems as they
are, and apply a baseline system to the corresponding baseline zones. I haven’t
tried calling data room systems process loads before, but I suppose it could work
if you’re consistent in applying/documenting it that way. You might
still find headaches trying to simultaneously document prescriptive
compliance. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I’d be interested to hear
others share any related experience =)!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37
id="Picture_x0020_1" src="cid:image001.jpg@01CC3572.314C7560"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, P.E.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>SENIOR ENGINEER<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>Smith &
Boucher Engineers</span><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway, suite 200<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe, ks
66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct
913.344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax
913.345.0617<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><a href="www.smithboucher.com"
title="blocked::www.smithboucher.com"><span style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='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>Will
Mak<br>
<b>Sent:</b> Tuesday, June 28, 2011 8:47 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Modeling Typical IT Rooms AC Units<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:"Segoe UI","sans-serif"'>Hey
all,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>I’m
working on a LEED energy model for an office building that has a couple
standard sized data rooms for server storage. They will be served by a couple
air cooled Liebert units. I started inputting information about the units in
the proposed design model and requested EER information from our vendor. The
EER value was provided but also pointed me towards ASHRAE 90.1-2007 Section 2.3
as the reason why EER values aren’t typically provided for these types of
units (he claims the cooling of the server rooms would be considered process
cooling):<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>ASHRAE
90.1-2007 Section 2.3 - The provisions of this standard do not apply to:<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><span
style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>Single-family
houses, multi-family structures of three stories or fewer above grade,
manufactured houses (mobile homes), and manufactured houses (modular)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><span
style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>Buildings
that do not use either electricity or fossil fuel, or<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><span
style='mso-list:Ignore'>c.<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><b><span style='font-size:10.0pt;font-family:
"Segoe UI","sans-serif"'>Equipment and portions of building systems that use
energy primarily to provide for industrial, manufacturing, or commercial
processes</span></b><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'>I’ve
typically model the scheduled units on the proposed design model and System
Type 3 or 4 on baseline model. However, if the above Section 2.3 applies,
should we be modeling the systems that serve IT rooms in an office building as
“process energy” and be equal?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Segoe UI","sans-serif";
color:#C75B12'>William Mak, LEED AP BD+C</span></b><span style='font-size:9.0pt;
font-family:"Segoe UI","sans-serif";color:#1F497D'><br>
</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:black'>Mechanical Design Engineer</span><span style='font-size:9.0pt;
font-family:"Segoe UI","sans-serif";color:black'><br>
</span><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><br>
</span><b><span style='font-size:10.0pt;font-family:"Segoe UI","sans-serif";
color:#C75B12'>EPSTEIN</span></b><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif";
color:#1F497D'><br>
</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:black'>Architecture<br>
</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:#C75B12'>Interiors</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:black'><br>
Engineering<br>
</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:#C75B12'>Construction</span><span style='font-size:8.0pt;font-family:
"Segoe UI","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:black'>Sustainability<br>
<br>
600 West Fulton Street<br>
Chicago, Illinois 60661-1259<br>
<br>
D: (312) 429-8116<br>
F: (312) 429-8800</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:black'>E:</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:#0070C0'> <a href="mailto:wmak@epsteinglobal.com">wmak@epsteinglobal.com</a></span><span
style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'><br>
W:</span><span style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";
color:#C75B12'> <a href="http://www.epsteinglobal.com/"><span style='color:
#C75B12'>www.epsteinglobal.com</span></a></span><span style='font-size:9.0pt;
font-family:"Segoe UI","sans-serif";color:black'><br>
<br>
</span><span style='font-size:10.0pt;font-family:Webdings;color:#00B050'>ž</span><span
style='font-size:8.0pt;font-family:"Segoe UI","sans-serif";color:black'>
Epstein is a firm believer in sustainability. We ask that you please consider
the environment before printing this e-mail.<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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