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FAQs about EAp2 :

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

Our project has a diesel backup generator. Should we include it in our energy model?

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

Can mezzanines open to floors below be excluded from the energy model?

How do I provide a zip code for an international location?

For a project outside the U.S., how do I determine the climate zone?

For a project outside the U.S., how do I determine the Target Finder score?

Do hotel rooms need automatic light shut-off control?

How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Exception For Baseline HVAC System

Yoyo Shek

Allied Environmental Consultants Limited

LEEDuser Basic Member

3 thumbs up

March 18, 2013

I am running a high-rise commercial development for LEED-CS. According to Table G3.1.1B, the baseline system shall be chilled water. But the local regulation restricts the use of cooling tower for the region and therefore only VRV could be used. Certainly it might be difficult to meet the prerequisite requirement. Do anyone has similar experience? For instance, alter the baseline system or just no chance to apply LEED certification.

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 03/18/2013 - 13:37

Local regulation does not matter to a fictitious baseline building. You must model it according to Appendix G, no exceptions. The good news is that it will probably not hurt you too much. We modeled a high rise in Italy with VRV against a system 8 and were able to get over 30% savings. The HVAC system choice alone should not dictate your ability to generate energy savings.

Yoyo Shek

Allied Environmental Consultants Limited

LEEDuser Basic Member

3 thumbs up

Tue, 03/19/2013 - 02:51

Thank Marcus Let me try to take a deep look.

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