radiator boiler (gas) spiral venting
in the old setup in the basement, shown in the picture, my gas radiator boiler had some spiral venting right above it before it went some 7-8 ft in gentle gradient up to the chimney and then two full floors up to the roof.
i am moving it to the first floor and was wondering whether i need a similar spiral in the same position. the boiler is about 34" high and the vent makes the first 90 turn in the ceiling above it at about 100", then it goes 8 ft, 90 turn, goes 5 ft and into the chimney going one full floor to the roof.
so i thought perhaps due to a different setup, i wouldn't need this spiral thing. don't know ... obviously, it is cheaper and simpler without it, especially because i have to order type B venting cause all the stores in my area that sell it require an HVAC license in order to sell it.
This is spiral pipe...http://i89.photobucket.com/albums/k2...piral-Pipe.jpg...it's rigid.
BTW, why are there 4 90° adjustable ells coming off the top of the boiler when 2 would suffice?
basically, do you think i can just have a straight pipe coming out of the appliance to the first 90 deg bend in the ceiling? i really don't see why not but someone else made me nervous and, since it's CO that's at stake, i didn't wanna prove myself wrong dying.
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