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

Building controls

Hello all, Two little questions: 1) If I had automatic internal draps, would I be obliged to simulate them in the baseline/proposed building? 2) Is it possible to consider, as for the lighting system, an occupancy sensor for the fan coil system (for example reducing at 90% the maximum fan's electric energy consumption)? Thank you in advance!

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Mon, 03/18/2013 - 16:18

Ciao Fabio, 1. Always model the proposed as designed. The baseline would be without shades. See Table G3.1.1-5 Proposed (d). You could likely get away without modeling them if you can make the case that your results are conservative without them, which seems likely to me. 2. Yes you can. Sounds like you will need to do it as an exceptional calculation. You will need to back up the claim of savings with a study or other documentation.

Mon, 03/18/2013 - 16:52

Hi Marcus, Don't you think that if I turned off the fan coil I could lose the temperature control (not acceptable for Leed)? Thank you very much!

Mon, 03/18/2013 - 17:00

I would assume that when the space is unoccupied your system would revert to the unoccupied temperature setting and cycle back on if it reached the unoccupied minimum set point. I suppose you could have temperature control issues depending on how you model it. If you are concerned about too many unmet load hours there is one way to find out . . .

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