Hey everybody,
We have a couple of apartment buildings that we are going to be doing some retrofit work to. We're going to be installing 1 Superhot AAA-840 Boiler (1 - 14" Flue Collar) in lieu of 2 Hydrotherm Boilers (4 - 8" Flue Collars).
My biggest worry is my combustion vent sizing. I've determined that the existing Chimney will be able to handle the capacity load wise, but my worry is in wondering if I can downsize our new 14" flue collar to 10". (I know by the looks of things it meets NFPA 54 code, but please correct me if I'm wrong.)
We will be running APPROX 25'-30' Height, with a lateral of ~5'.
I would love a hand with some information, and I'd love to be able to understand my codes better without having to call the authority having jurisdiction.
Kindest Regards!
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