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Pesky Pine Needles
FB
Member Posts: 45
Our Buderus 142/24 boiler vent and intake exits through a roof with gutters that fill with pine needles. Concerned that some of the needles have been falling into the vent opening and could interfere with proper exhausting, I recently covered the opening with a small dome of stainless steel screen. The screen is retained with a stainless steel worm drive clamp. The screen openings are small enough to block the pine needles. I plan to keep an eye on it, especially during the snow season. Any input about potential problems this modification may cause is appreciated.
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Comments
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Condensation may form along the screen mesh which could potentially freeze closed which could cause some pretty serious issues. Never seen this myself from a screen but that one is pretty tight, and I have heard several stories from service techs who have dealt with issues due to screens freezing.1
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Is there any reason why you cannot add pipe with a Fernco coupler to elevate the flue exhaust??0
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loose the screen!
if pine needles are a problem another solution is needed.0 -
That screen is inside the cap assembly? It's not likely to be really needed -- but if a screen is (and note the comments on freezing up above -- it will) it be much better arranged as a cone above the outlet, shaped and attached so that it was open around the skirt so that when it does freeze there will still be a way to get exhaust out. That way too the pine needles will just blow off it and you won't have to go up on the roof to clean it.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
it shouldn’t be hard to come up with a plastic or stainless hood to put over the vertical part of that concentric. A 3 or 4” pvc cap with some legs to support it. Clamp it around the OD of that concentric.
The tougher fix is the pollen from the trees, that they inhale 😉Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
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I would think that when the blower comes on, it would push any pine needles out, but I might be dreaming.
Adding a PVC street 45 might get it to a large enough angle to fend off any falling needless and still keep the exhaust gasses away from the air intake. You don't even have to glue it in case you want to change the angle later.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0
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