I have scored a New Englander 25 PDVC for my garage/workshop. The previous owner had a woodstove setup. I am hoping I can exhaust it out with the pipe that was left in place. I have about 28 feet of six inch pipe that I would tap into. What do you guys think...Is it doable? I don't plan on using it a ton. just the occasional fish cleaning/ football watching/ car repairs..etc.
venting out old woodstove pipe?
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i did that with no problems they have an adapter that goes from stove pipe to pellet pipe
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Bioburner
Moderator
Cory S, I was under the impression that you had double wall pipe hooked to stove. Having single wall pipe that close to a wall may not be to prescribed distances if the wall is normal sheet rock.
I would recommend turning your entire house one turn clockwise. Stove will burn and vent much better. 
28 feet is a long run but I assume it's got some pretty good draft. You should seal/reseal each joint to prevent leakage. As stated in another thread, stove pipe is not pellet pipe and is not designed for use with a pellet appliance.
There isn't any combustibles in that area. The entire back wall is concrete. The sides are Durock. Ceramic tile thin setted onto the concrete floor
.
Bioburner
Moderator
While not technically designed for pellet appliances, it is well suited for them and approved in most situations, as long as common codes/rules are followed. My Harman dealer installs over 30% of their installations using existing customers stove pipes with appropriate adapters and clearances. They assured me that my layout would be exactly what they would do, and never once had a single issue with fire regulation approvals and home insurance codes/inspections.
Lake Girl
Moderator
For clarity on usual install in a residence (stick construction), adapter is used at the wall penetration/chimney with pellet venting from the stove up to that point. Not everyone has a concrete wall...
How do they keep the positive pressure in the pipe from blowing ash and fumes out of the unsealed joints? There is a good reason pellet pipe has gaskets or tells you you need to seal the joints.
Bioburner
Moderator
The stove pipe is easily sealed with sealant and once it goes into a large diameter pipe the pressure falls close to zero relying more on natural draft to expel the exhaust.
I know it can be done but it is much better to just use pellet vent. The problem i have with sealing the joints is after you do that how do you service the pipe?
Lake Girl
Moderator
I know i have to deal with that crap all the time. It is a real pain in the butt to work on a stove that you cant disconnect the pipe from
Bioburner
Moderator
I don't have a clean out tee on the basement Harman but when I use the LBT run a brush through the stove. One very nice feature of cleaning a Harman is the combustion fan is not in the exhaust path.
Not in my experience at all.
Yeah harmans are by far the nicest pellet stoves to work on but i still want to be able to take the pipe apart.
This topic has been debated here many times and I'm not looking to do it again other than to say that using wood stove pipe to vent a pellet stove is ill advised especially when the stove pipe is inside the home. It would take quite a bit of convincing to get me to agree that stove pipe is "well suited for them and approved in most situations"
Pete Zahria
Minister of Fire
Just for those that have not been here during those debates... maybe you can explain why...
Thanks
Dan
Trying to suck me in Dan??? Venting 101- A wood stove appliance vent works via a chimney which creates a draft that draws (or sucks) the smoke out/up. Wood stove pipe is slip fit without any type of gasket and in most circumstances isn't sealed. Pellet pipe is designed for pellet and some multi-fuel stoves. It has a seal of some type, either rope or silicone. Pellet stove exhaust is positive pressure and is forced out (similar to direct vented hot water heater) via the combustion fan. The gaskets in pellet pipe prevent any chance of smoke and CO leaking.
My point is...we/us/those of us here with some experience should not be condoning the use of wood stove pipe as if it's "no big deal". Many here use stove pipe and seal it with silicone and achieve good results. IMHO, when installing a pellet stove, use the proper pipe. Don't cut corners to save a buck when buying the proper pipe may save your life.
Pete Zahria
Minister of Fire
Lake Girl
Moderator
Cory, hopefully you have CO monitors in the house... Law in Ontario just recently added requirement of CO monitor near bedrooms in all homes.
Yes, one of both levels.... I believe they should be a must in any home myself....
I do agree that you can use stove pipe and if you seal it it can be safe. But It is not the best safest or even the right way to do it. Pellet vent really is not very expensive why not spend the little extra and do it right.
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