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We have a VAV system where single AHUs serve multiple zones. Do we need to take outside air measurements at each VAV box?

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Our building has a single fan that supplies outside air to multiple AHU’s. Do we need to perform outside air testing at the supply fan or at all AHUs?

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EBOM-2009 IEQp1:Minimum IAQ Performance

IEQp1 form - Selecting Critical Zones

How to answer the following requirement in the IEQp1 form when you already filled the Minimum IEQ perfromance calculator with all occupiable zones in it and it has already automatically selected the critical zone.

"describe how critical zones are selected and how all occupiable zones are accounted for in the determination of the critical Zone.

Please advice.

 

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Profile picture for user Dave.Hubka_2
Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Mon, 07/30/2018 - 12:13

Here is the narrative we typically provide: "All spaces that require ventilation have been entered into the Minimum Indoor Air Quality Performance calculator. The calculator automatically determines the critical zone. The total gross floor area of the ventilation calculators will not equal the total gross floor area listed within Project Information Form. The total gross floor area listed within the Project Information Form includes areas of the project building that do not require ventilation as well as areas that require minimum exhaust rates, hence the discrepancy." 

Mon, 07/30/2018 - 12:18

Thank you very much David, Hope this will work.

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