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What if after our Preliminary Review we have to re-work the ventilation rate procedure calculations and find that we need to make corrections to the system in order to meet the prerequisite? Can we redo the outside air testing after making corrections? Wo

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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?

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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EBOM-2009 IEQp1:Minimum IAQ Performance

EZ

I am working on a small project with a design team that is fairly new to LEED. We are working on IEQ P1 and would like to find some direction on selecting the correct EZ value to be used in table IEQp1-A2. We have been using the 0.8 value as a default but would like to know for sure if that is correct. Thanks in advance.

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Dylan Connelly
Mechanical Engineer
Integral Group
LEEDuser Expert
342 thumbs up

Wed, 03/05/2014 - 00:13

Depends on your distribution style. Overhead diffusers and return overhead is 0.8. Julia Weatherby describes how to find out your Ez in detail below.

Mon, 03/17/2014 - 07:09

Cheryl, Check table 6-2 on ASHRAE 62.1 2007.

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