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

INSULATION ON SHELTERED WALLS

We are assessing a C&S 2009 project. We have two sheltered walls with neighbors on both sides. The walls from the neighbors are not along all the project walls. The question here is if all the sheltered walls need to have insulation?? Or the insulation needs to be only on the non-sheltered parts? Many thanks!

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Fri, 10/10/2014 - 20:02

I am not sure what you mean by sheltered walls. The walls for conditioned and semi-conditioned space need to be insulated. If it is a shared wall with the same temperatures on both sides you would model it as adiabatic and technically it would not need to be insulated. Practically what happens if the neighbor goes away? Reference ASHRAE 90.1-2007 Section 5 for the terminology used to describe what does and does not need to be insulated.

Fri, 10/10/2014 - 21:09

It is actually a party wall with aprox. 15 inches of separation from the neighbors walls.

Fri, 10/10/2014 - 21:45

If the 15 inches is connected to the outside then it is an exterior wall.

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