ERV airflow imbalances
Longtime-no-ask-question-to. I hope you are all well.
Just had a RenewAire ERV (EV450) installed in the new office. The twisting, turning, bending, really-long Fresh Air Supply to the space has a duct run with an equivalent length of around 600′. The straight shot, right-next-to-the-ERV inlet for the Return/Exhaust Air has a duct run with an equivalent length of maybe 80-100′. The ERV serves the individual offices, while we have a dedicated 100% OA unit w/DX cooling that serves the common areas within the space. Common area to office ratio is probably 3:1, in terms of floorspace.
This thing sounds like a freight train, and the system is operating under a significant airflow imbalance: Exhaust Airflow = 930 CFM, Supply Airflow = 610 CFM. (We have some slick Greentrol aifrlow measuring stations mounted in the ducts).
I’m struggling to get my head around what sort of problems would be associated with this type of imbalance from an indoor comfort/IAQ and system performance perspective (rather than an over-exhausting/energy penalty perspective). Can this imbalance cause problems with the core?
I’m in Climate Zone 5A. Any thoughts or opinions?
Thanks a ton.
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