FAQs about EAp2 :

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?

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

The Section 9 space-by-space method does not include residential space types. What should I use?

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?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Reset temperature??

We are on our final review. LEED reviewers have stated that the Baseline Case system input reports indicates that supply air temperature reset was not modeled as required by Section G3.1.3.12. They advised that we revise the Baseline model as necessary to reflect the specified temperature reset controls and include these controls in the input parameters described in the Supplemental Table 1.4. and indicate any reset controls modeled for the Proposed Case. Our narrative response indicated that the Baseline Case systems had been revised to include supply air temperature reset. They responded "However, the supply air temperature reset indicated in the system input reports (supply air temperature reset of eight degree F based on outdoor air temperature) is inconsistent with that indicated in Section G3.1.3.12 (supply air temperature reset of five degree F based on minimum cooling load conditions). For future submittals, revise the Baseline Case model to report the supply air temperature reset reflecting the requirements of Section G3.1.3.12. Provide a System Entered report to verify compliance." The 8 degree supply air reset used in the model is greater than the 5 degree supply air rest asked for in G3.1.3.12 - so is this a sound basis for rejection? Can anyone advise us on how to proceed?

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Wed, 01/22/2014 - 17:02

The reviewers do check the modeling reports for consistency with the review response comments. So for future submission you should make sure that what you say is consistent with the information in the modeling reports. The way this is written sounds like an educational note and was not the basis for rejection but without seeing everything I can't be sure. The difference would actually hurt your savings and is therefore conservative so it should not have been the basis for a rejection. Were there other issues raised? Was everything denied or was there an adjustment made to the results?

Wed, 01/22/2014 - 17:09

Thanks. Yes, there were additional issues to be resolved. So we should just enter the 5 degree value as they recommended?

Wed, 01/22/2014 - 17:19

Yep model the baseline as instructed. You should see your savings increase as a result (all else remaining the same).

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