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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='color:#1F497D'>Hey Robert,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>My understanding of the CO2 monitoring credit is that it ONLY requires that you provide capabilities to monitor CO2 and not necessarily vary the amount of outside air. So if your HVAC equipment cannot vary the amount of OA you could still provide CO2 sensors that report the CO2 levels.<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'>Everyone else: is this what your understanding as well?<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'>Thanks<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Prem<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:black'>Premnath Sundharam, AIA, LEED AP BD+C</span></b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Architect | Senior Associate<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D'><a href="mailto:psundharam@dlrgroup.com"><span style='color:#4D4D4D'>psundharam@dlrgroup.com</span></a><o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-family:"Arial","sans-serif";color:black'>DLR Group</span></b><span style='font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Architecture Engineering Planning Interiors<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#4D4D4D'>o: 602-381-8580<br>6225 North 24th Street, Suite 250 Phoenix, AZ 85016-2020<br>Find us at: <a href="http://www.dlrgroup.com/"><span style='color:#4D4D4D'>dlrgroup.com</span></a> | <a href="http://www.facebook.com/dlrgroup/"><span style='color:#4D4D4D'>Facebook</span></a> | <a href="http://www.twitter.com/dlrgroup/"><span style='color:#4D4D4D'>Twitter</span></a><br> <br><a href="http://www.youtube.com/user/DLRGroupDesign?feature=mhsn"><span style='color:#4D4D4D'>DLR Group wins most prestigious honor in K-12 design.</span></a></span><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>Robert E. O'Connell<br><b>Sent:</b> Wednesday, October 26, 2011 11:06 AM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] Co2 Monitoring<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Gentlemen I have a question regarding 90.1 when modeling a space. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The design we are using for a project is to provide minimum ventilation (as called for in ASHRAE 62.1-2007) to all the spaces based on max occupancy. The spaces are offices and conference rooms, one or two class rooms. The heating and cooling load is provide in each space by FCU. The make-up air is preconditioned to 55 Degree F. The relief air passes through a heat recover unit to collect the heat from the relief air. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If was are not varying the make-up air quantity do we need to have CO2 monitoring in each space.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Do you believe we would get any push back from USGBC on this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Has anyone dealt with this issue before. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Robert O'Connell P.E. <o:p></o:p></p><p class=MsoNormal>Email: <a href="mailto:reoconnell@meengineering.com">reoconnell@meengineering.com</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>________________________________________________________________________<br>This Email has been scanned for all viruses by PAETEC's Hosted E-mail Security Services, utilizing MessageLabs proprietary SkyScan infrastructure. 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