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?

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?

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

NC-2009 EAp2:Minimum Energy Performance

Ground source water loop required District Cooling guidance?

We would like to ask something regarding a comment from a reviewer for EAc1, this is a rather vague comment in our view. Our project consist of around 5 buildings connected through a ground water loop supplied by a well, the cooling/heating process occur at a project scale not a campus scale. The reviewer said: "It appears from the description in the Commissioning Report provided in EAp1: Fundamental Commissioning that a campus energy source is used for the Proposed Case building heating and cooling. Note that all New Construction, Schools, Core and Shell, and Commercial Interiors projects registered with the USGBC on or after 05/28/2008, and using district thermal energy, are required to follow the guidance of the document "Required Treatment of District Thermal Energy in LEED?NC version 2.2 and LEED for Schools, version 1.0" (DES v1) dated May 28, 2008 which can be accessed at: www.usgbc.org/resources/des-district-energy-systems-guidance-v22-and-v20.... Optionally, in lieu of following the required version 1.0 guidance, the project may choose to follow the guidance of the document "Treatment of District or Campus Thermal Energy in LEED V2 and LEED 2009? Design and Construction" (DES v2) dated August 10, 2010 which can be accessed at: www.usgbc.org/resources/des-district-energy-systems-guidance-v22-and-v20.... If following version 1 of the District Thermal Energy guidance, please provide a Step 1 EAc1 template and supporting documentation if pursuing 2 points, or both a Step 1 and a Step 2 template and supporting documentation if pursuing more than 2 points, and provide sufficient information to show that the District Energy Requirements document has been appropriately applied to the project. If following version 2 of the District Thermal Energy guidance, please follow the requirements of either Option 1 or Option 2, as appropriate for your situation. The submitted LEED review documentation must clearly state which method, District Thermal Energy guidance v. 1.0 (DES v1 - May 2008) or District Thermal Energy guidance v. 2.0 (DES v2 - August 2010) was used". The commissioning Report is not very clear on this, the Cx Agent does not say that a campus energy source is used for the Proposed Case, but it only says the ground water source well pumps (campus) are out of his/her scope (which by the way are not energy source in any way). Thus we cannot follow any of these guidances suggested since the cooling and heating are provided at a project level instead of a campus level , given that the groundwater is considered a thermal storage only in this case. Has anybody had any experience on this type of comment?

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Tue, 01/07/2014 - 21:14

Is your project v2.2 or 2009? I just responded to the same post in the v2.2 EAc1 forum.

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