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FAQs about IEQp1 :

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

What if our systems do not meet the required outside air when systems are tested at worst-case conditions?

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

Unable to Meet Pre-req during Current Performance Period

I was wondering what would happen if we failed to meet a prerequisite such as IEQp1. Would we need to restart our performance period after correcting whatever it is that needs to be corrected? Could this potentially push back the project completion by several months? I am asking because I am using the alternative compliance path for IEQp1. I only performed 62MZ calculations using potentially critical zones. The LEED template requires that we enter all zones, but this building has several hundred zones. That is why I am only doing critical zones. Thanks.

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Profile picture for user bstanley
Ben Stanley
Senior Sustainability Manager
WSP - Built Ecology
LEEDuser Expert
188 thumbs up

Tue, 10/11/2011 - 16:49

There's a couple of things going on here. 1. If for some reason you needed to make corrections to the the ventilation system in order to meet the ventilation prerequisite during the review process, you could do so without having to re-set the performance period for all of the performance based credits like EAp2, purchasing credits, MRc7, etc. Though, you would have to re-do the outside air measurements. It is also probably worth confirming this with the project review team. 2. You can still use the 62MZ Calc to calculate the minimum required outside air. That calculator only requires assessment of the critical zones and is an acceptable alternative to using the credit form calculator. So, you can still avoid entering in hundreds of zones.

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