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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

Fresh Air Measurements on Rooftop Units

I am applying this credit to ten rooftop units that lack a straight duct section long enough to traverse with a pitot tube. The TAB contractor is concerned that measurements taken at the intake louvers will be inaccurate because of the influence of wind. I envision temporarily fastening some kind of manifold/duct section over the RTU's fresh air intake louver to facilitate measurements. Before I propose this to the TAB contractor has anyone tried anything similar (or simpler) with RTU's? Thanks in advance.

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