Connecting Stove to Old Chimney

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cowentz
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Post by cowentz » Sat. Jan. 03, 2009 9:39 pm

I bought a used coal stove and all the piping to put up a ss chimney. Well it turns out a ss chimney just will not work for my house situation (grade level, windows, clearance for stove pipe to floor joist for thru the wall ect). I have considered power venting my furnace (since it will rarely be on) and hooking the stove into the older chimney I have. The chimney is brick with terracotta liner. The brick is in good shape, but the liner is not the best, it has some cracks and deterioration. Can I use it as is if I only burn coal and no wood?

 
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Hunlock
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Post by Hunlock » Sat. Jan. 03, 2009 9:56 pm

Can you use it? I'm sure it will work.

But should you, is a different story. If the liner is shot, CO can/will leak out of the sides of the chimney. If your chimney is an interior construction, guess where that CO is going to end up?...YUP, right where it has no business!!! ;)

Return you SS Chimney, and get a SS liner. Check the classifieds on here, as used ones are sometimes listed..

Good Luck.

Tim

 
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Post by CapeCoaler » Sat. Jan. 03, 2009 10:05 pm

Have it inspected by a professional and they will tell you if it is usable.
The power vent will set you back some $ and you may need a SS liner for the chimney.
It sounds like the stove is in the basement, yes?
If so why not hire a concrete company to core the concrete at the correct place.
*NEED HELP FAST* 8" Thimble How Big a Hole?


 
cowentz
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Post by cowentz » Sat. Jan. 03, 2009 10:27 pm

The chimney is exterior. The power vent for my furnace is about $650. I am trying to get away with as little money as possible as I am probably moving in about 2 years (sooner if it was up to me but the wife says not yet). I thought I have read on here of people using brick chimneys that were not lined at all? If I can power vent the furnace and use chimney as is I will do that, but if that is not safe I think I might bail on the project and burn oil until we move.

 
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rockwood
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Post by rockwood » Sat. Jan. 03, 2009 10:41 pm

I think the best idea, as mentioned above, is to install a SS liner into the old chimney.

But, when you say "cracks and deterioration" in the old chimney tile, how are you determining this, shining a flashlight down the chimney etc.? Is the whole chimney in bad shape or just the top where it's been exposed to the weather?

 
cowentz
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Post by cowentz » Sat. Jan. 03, 2009 10:49 pm

I used a flashlight and mirror in the bottom clean out. The deterioration I saw was at the bottom.


 
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Post by CapeCoaler » Sat. Jan. 03, 2009 10:52 pm

But where were you going to run the SS chimney you already have?
I assume it was in the basement and the clearence issues were due to a concrete or block wall.
By coring the wall and putting in a well around the SS chimney you may have solved the problem with the items you already have.

 
cowentz
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Post by cowentz » Sat. Jan. 03, 2009 11:00 pm

I guess I could put in a well to get me down to where I need to be. Would I have to put 2 holes in the wall then, one for the pipe and one for clean out?

 
CapeCoaler
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Post by CapeCoaler » Sat. Jan. 03, 2009 11:05 pm

SS Tee is outside in the well so no need for a second hole.
The well should be large enough to reach the bottom of the outside Tee.
If you also put a Tee on the inside then you can just vacuum out the ash from inside!

 
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e.alleg
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Post by e.alleg » Fri. Jan. 09, 2009 11:11 pm

Hunlock wrote:Can you use it? I'm sure it will work.

But should you, is a different story. If the liner is shot, CO can/will leak out of the sides of the chimney. If your chimney is an interior construction, guess where that CO is going to end up?...YUP, right where it has no business!!! ;)


Return you SS Chimney, and get a SS liner. Check the classifieds on here, as used ones are sometimes listed..

Good Luck.

Tim
The part in red is 100% false, a chimney by design has a draft or negative pressure - a vacuum - or no positive pressure. Any holes in the chimney will suck in air, CO or any other gas cannot escape. If any chimney develops positive pressure you will have CO leakage from your appliance or barometric damper whether it's a wood, gas, or coal fired unit. Power venters on modern furnaces have positive pressure, they use special pipe and have silicone gaskets at all connections. They cannot use a chimney. An unlined chimney is unsafe if you burn wood because it can suck in excess air and in the event of a chimney fire there will be no way to put it out and flames can escape the cracks and burn your house down. Because coal and wood can be used in some of the same stoves and there are no specific laws governing stoker anthracite coal chimneys the building code says you can't use an unlined chimney with a solid fuel stove unless it was already in place and therefore grandfathered in.

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