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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'>Your proposed inputs need to match what is actually being installed in the building. If they are installing oversized equipment, you need to model oversized equipment. The model will account for part load efficiencies. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#1F497D'>Steve<o:p></o:p></span></p><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"'> Trace-users [mailto:trace-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Caballero, Catalina<br><b>Sent:</b> Tuesday, October 7, 2014 9:04 AM<br><b>To:</b> trace-users@lists.onebuilding.org<br><b>Subject:</b> [Trace-users] Load Calcs vs Energy Model for LEED<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hello experts,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We <span style='font-size:10.0pt'>recently received comments back from LEED and one of the comments says the following: <o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt'><o:p> </o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>It appears the equipment capacities (fan volume, fan power, cooling capacity, etc.) for the HVAC systems in the Proposed model<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>are inconsistent with the equipment capacities in the actual design when comparing the LEED Energy Performance Summary Report<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>to the mechanical schedules provided for PIf4: Schedule and Overview Documents<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>G3.1.10 in the Proposed building column requires that the Proposed model reflect all HVAC systems at actual equipment capacities<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>and efficiencies. The HVAC equipment capacities cannot be autosized in the Proposed model. Revise the Proposed model to reflect<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>all HVAC systems at actual equipment capacities. In addition, update Table 1.4.7B, and provide a revised LEED Energy Performance<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>Summary Report and the System Enterd Values reports for the Proposed model reflecting the changes. Further, if the equipment<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt;color:#444444'>capacities and efficiencies are based on updated mechanical schedules and/or HVAC submittal sheets, provide the updated<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#444444'>mechanical schedules and/or HVAC submittal sheets.<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;color:#444444'><o:p> </o:p></span></i></p><p class=MsoNormal><span style='color:red'>The only question that I have is why would they require for the airflows, to be exactly the same, to the original load calculations when the load calculations looks for the worst case scenario (using ashrae basic envelope, lighting, values), while the energy model looks for the most energy efficient model (actual installed envelope, occupancy, etc). It make sense that they are looking for something similar but it’s definitely not going to match the capacities and or airflows, (load calcs tend to be oversized).<o:p></o:p></span></p><p class=MsoNormal><span style='color:red'><o:p> </o:p></span></p><p class=MsoNormal>I would greatly appreciate your opinion.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks.<i><span style='font-size:18.0pt'><o:p></o:p></span></i></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black'>Catalina Caballero</span></b><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black'>. AIA. Assoc., LEED GA.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black'>Sustainability Coordinator<o:p></o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:gray'><o:p> </o:p></span></i></p><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black'>Johnson, Avedano, Lopez, Rodriguez & Walewski Engineering Group, Inc.<o:p></o:p></span></b></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:#00B050'>Engineering for High Performance Buildings.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:9.0pt;font-family:"Century Gothic","sans-serif";color:black'>MEPF - BIM - LEED - Cx<o:p></o:p></span></i></p><p 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