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NC-2009 IEQp1:Minimum IAQ Performance

v2009v4_Minimum IAQ Performance Calculator_v02 - Any Experience?

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O Moltay
LEEDuser Basic Member
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Dear Members, Do you any experience with the v2009v4_Minimum IAQ Performance Calculator_v02 spreadsheet found under Credit Resources for IEQp1? Is this form suitable for showing compliance with Multiple Zone Systems in lieu of ASHRAE 62MZ calc spreadsheet? Additionally, we are confused by some of the parameters when using the Appendix A method for VAV systems. When there is no secondary recirculation, shouldn't Er and Ep be "1"? However, the definition of Ep is given as Vpz / Vdz, in which case Vpz = Ds * Vdz for VAV systems representing minimum flow conditions. Therefore, shouldn't Ep be equivalent to Ds? Thank you,

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Joseph Snider
Principal
Integrative Sustainability Solutions
LEEDuser Premium Member
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Mon, 10/19/2015 - 13:13

We recently had the opportunity to get some feedback from a USGBC reviewer on the new spreadsheet. Yes, this is the preferred calculator, instead of the older ASHRAE 62mz excel sheet and the template. This appears to be what they want to see going forward as it is better organized and the results tab makes it easier to review. Note one item we found which is that on the SINGLE ZONE tab, the default occupancy isn't populating correctly. It pulls numbers from the wrong place. So you need to use manually entered occupancies. Apparently this is a known error and they are working on fixing it and re-releasing it. I'll default to some of the more technical experts on the second part of your question.
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O Moltay
LEEDuser Basic Member
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Tue, 10/27/2015 - 20:32

Yes, the single zone tab does not populate correctly. Additionally, the summary tab fails to display all input systems in our case. We contacted the GBCI about this and they said that they did not know of this mistake before and that it is probably due to the fact we have gone back and forth in inputting multiple zone and %100 OA systems. So be careful when using this spreadsheet.

Wed, 10/28/2015 - 08:26

My project is outside of the US.Can't i use the spreadsheet?

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