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<p class="MsoNormal">Hello Community,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a residential building, designed to use VRF for all units and common spaces with DOAS (with NG furnace) for ventilation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">While the Heating & Cooling of the units are all VRF (Electric) and only the Ventilation portion that would use fossil fuel for preheating, how should I select/model my Baseline HVAC system?<br>
<br>
- System 1 PTAC (Since Proposed HVAC is Elec+Fossil Fuel)<o:p></o:p></p>
<p class="MsoNormal">- System 2 PTHP + DOAS w NG like the proposed HVAC system.<o:p></o:p></p>
<p class="MsoNormal">- System 2 PTHP Only (Assuming the Electric HVAC system is the predominant type)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This isn’t for LEED submission; it is a different relatively new program in DC where 90.1 2007 guidelines are required.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1104BC">Khaled Fouda</span></b><span style="font-family:"Arial",sans-serif;color:#1104BC">,</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1104BC">
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1104BC">LEED AP, CEM</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1104BC"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Integrated Energy Concepts Engineering, P.C.</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">Phone: 585-272-4650 ext 29</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496">eFax: 718-228-5154<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2F5496"><a href="mailto:kfouda@nrg-concepts.com"><span style="color:#0563C1">kfouda@nrg-concepts.com</span></a><o:p></o:p></span></p>
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