I'm having a heck of a time getting the right combination of pipes to fit my existing chimney. I have an 8" clay(?) pipe going from the basement out through the foundation into the chimney. I ordered what I thought I needed from Home Depot. It wasn't right. I called DuraVent themselves and they suggested a collar to solve my problem. Now it hasn't come yet but I'm not convinced it's going to be the right part. Other than just waiting for my next package to arrive, does anyone have any ideas? Thanks!
Proper venting of a Pellet Stove
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Tim Linden
Burning Hunk
TimfromMA
Minister of Fire
Tim Linden
Burning Hunk
Yes. It was professionally installed so I didnt do it but thats what we have. My first stove so I had them do it all so I didn't have to second guess safety.
TimfromMA
Minister of Fire
MarkF48
Feeling the Heat
I have a Harman XXV and the installation manual indicated directly venting into a masonry chimney was OK as long as the clay flue liner was not cracked or flaking and the joints were good. Check your stoves manual if venting direct is allowable for your stove and not just on someones word.
I didn't readily find a collar to fit the round clay tile. What I did was use a large coffee can as a centering device by "pie" cutting tabs in the can bottom that fold back to fit the vent pipe through and using a O-ring clamp over the tabs to fasten the can firmly to the pipe ( a picture would be good here, but I'm not pulling it apart to snap a picture). The vent pipe with the can is inserted into round tile and the other end attached to the stove. I pack fiberglass insulation around the pipe to further semi-seal the pipe to the round tile. Going on 3 years of use of the stove and this has worked well.
Would the crimped end of a single wall 8" stove pipe fit the opening? If so and you have appropriate clearances from combustibles, you can buy a crimping tool and make a collar so that you have female ends on both ends of the pipe and use reducers to connect to the remaining pipe to the stove.
tjnamtiw
Minister of Fire
OMG on so many fronts! Possibly using drier vent for exhaust? 'Semi-sealing' with fibreglass with a POSITIVE pressure exhaust? Using a coffee can to cobble together an adapter?
I sure hope they sell good CO detectors up there!
http://www.efireplacestore.com/cpf-7755-dspmadapt.html
I sure hope they sell good CO detectors up there!
http://www.efireplacestore.com/cpf-7755-dspmadapt.html
Now that I think of it, I had a thimble made out of stainless by a small fab shop very reasonable and it does not rust out.
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MarkF48
Feeling the Heat
That adapter you linked is not something I would consider using for a pellet stove as it wouldn't provide a good seal to the flue tile, but likely fine for a wood stove install. My chimney has a good natural draft and the reason for the fiberglass was to maintain that draft by sealing off the pellet pipe to the clay tile. The fiberglass is packed fairly tight. The coffee can is not an "adapter", but simply a means to center and support the pellet stove pipe within the round chimney tile. I have a CO and smoke detector located within the room the pellet stove is in and they have never gone off in 3 years and no smoke odor ever noticed. Inspector had no issues with the install.
tjnamtiw
Minister of Fire
Just to show that there are things made to adapt to clay pipe. Yes, as-is it would work with a wood stove. For a pellet stove, I'd bed it in high temp silicone or stove cement and then adapt down to 4". I'm sure a better search would yield exactly what the OP needs.
MarkF48
Feeling the Heat
Like this.....
Pellet Stove Chimney Adapter, 8"
Correctional Note: This is an adapter to fit pellet pipe to a Duravent class A 8" metal chimney, not a masonry chimney. A masonry adapter would likely look similar to this, but I have yet to find one for masonry.
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I thought the same thing. That's why I have that part sitting here as it's totally useless. The outside diameter is around 9". Who woulda thought an 8" adapter would be 9"? LOL
MarkF48
Feeling the Heat
Ahh..... I read the Amazon ad a bit further. That adapter fits up to a Duravent class A chimney pipe, not masonry. At first glance it would seem to be one that could be used with the reference to the 8" spec.
Tim Linden
Burning Hunk
Nice misquote. Nobody is saying use a dryer vent for exhaust. I was using it to describe what the liner looks like.
tjnamtiw
Minister of Fire
''Ours is a liner that is almost identical to a dryer vent. In fact it might be a dryer vent lol''
Harman Lover 007
Minister of Fire
If the ID is 8" us can make a collar adpater to go from the clay pipe to the 8" adapter. Place the female end of a piece of 8" stove pipe into the clay pipe securely. Measure how much you need extending out of the 8" pipe to fully seat into the adapoter. Cut the pipe to length and use stove pipe crimping tool so that it will fit into the adapter. Secure ends of the stove pipe with sealant or refactory cement on the clay pipe side and sealant and screws on the adapter end. Run the pipe to the stove.
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