Pellet Stove Installation

Hello there,

I am interested in installing a pellet stove in my living room for both aesthetics and supplemental heat.

My major install question pertains to the chimney.
My house has an existing chimney that is no longer in use. It runs from the basement up through the main floor and second floor and ends at the floor level of the attic.
The ducting from the furnace to the second floor rooms has been run through this chimney.

I have seen before where stoves have been installed using existing chimneys by way of the double or triple wall chimney pipe being inserted into the chimney and using the chimney as a pathway.
I am unfamiliar with laws and regulations on these installs so my question is can I utilize the old chimney by running the flue pipe through it and up out the roof through the attic if it will fit with the duct pipe that is already there?
Would it be allowed to run that pipe through there with the furnace pipe?

Maladjusted said:

So... the existing masonry chimney is being used as a chase that terminates at floor level in the attic and the existing furnace has a flue in the chase that extends beyond the chase and penetrates the roof to terminate above the structure?

Is there room in the chase to run a 4" flue pipe dedicated for the pellet appliance? I wouldn't see an issue with running a separate flue in the same chase. The exhaust (and subsequent flue piping) from a pellet stove does not get that hot... right behind my stove on the vertical runs about 150º when the stove is running full blast. Harman stoves have mfg requirements listed in their manuals for exhausting their stoves. You can find them on their site. (I don't work for Harman.. I just have their stove an love it.)

Good Luck..
Mal

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Thank you for your reply.

No the glue pipe for the furnace does not run up the old chimney chase, it exits through the side of the foundation from the basement.

The only thing running up the chimney is that black flexible ducting going up to the attic where it then goes to a ceiling vent for the 3 upstairs bedrooms for the heat and a/c.

I am not sure of the amount of room left in the brick chimney to fit the flue for the pellet stove, my next question was going to be what size of chimney pipe do I need for the pellet stove?

Ssyko said:

size of vent pipe will depend on the length of the run. but if you have circulating ducts in the upper part of that chimney i don't think you can run an exhaust through it. out through a wall or the back side of the chimney like Kap said.

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Oh ok I understand.
Unfortunately back of chimney won’t be an option as the chimney is not located on an exterior wall of the house.