EPA Wood burning stove owners, is there any chance you could do me a favour and...

Take a few pictures of the secondary burn systems in your stoves?
I have some of a Morso stove and there's also a very interesting system (looks like a retro fit as well) on a Vermont Elm stove but wouldn't mind a few more to compare against.
These are the Morso ones to give you an idea what I'm chuntering on about and I doubt that any Machine mart ones will have the system.

Stove.


Looking at baffle with secondary burn air holes and up to chimney.


Looking under grate to what looks like the secondary burn air intake, maybe.


Thanks in advance, regards Scott.

someone should clean that thing already ..yikes!

flotek said:

someone should clean that thing already ..yikes!

Click to expand...

Not my stove, just took pics of one at a mates house.

You'll have to wait till the house gets too warm and I let the fire die out.

I've got an EPA and WA state approved one. It works well so far. There's a drier vent sized tube bringing air up through the floor of the house and into the stove. The other stuff would be better in snapshot.

slowp said:

You'll have to wait till the house gets too warm and I let the fire die out.

I've got an EPA and WA state approved one. It works well so far. There's a drier vent sized tube bringing air up through the floor of the house and into the stove. The other stuff would be better in snapshot.

Click to expand...

Good stuff, any pictures that show the secondary burn system will be much appreciated.

Cheers.

the hole-filled, stepped-plate in your pics look just like mine.

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This is the firebox of my Epa Woodfurnace. It has 4 manifold tubes, and the tube midway up is for zipper air. There is also zipper air in the front at the base of the loading door that heats the coals, and adds oxygen to the fire.

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And a video of the secondary burn in action.

Yeah full glass door. Zipper air is extra air that is placed throughout the firebox to help burn down coals, and promote extra combustion. The rear air helps light off secondaries. There may be a different name, but I've only called it zipper air.

TreeCo said:

Don't forget that a secondary combustion air usually travels quite a distance through channels inside of the wood stove before it hits the secondary tubes. The tubes in the fire box are just the final stage....the preheating of the air takes place before the air gets to the tubes.

Click to expand...

Yeah, I knew that but thanks anyway.

Can't do rep cos I've already done it recently.
To be honest, the hard part looks to be getting the preheating air warmed up enough so it works properly.

Whilst on the subject of this though, I don't suppose anyone has any links to information about building efficient stoves? I know this information can be hard to get hold of and manufacturers don't tend to give it out but there's got to be something out there somewhere.

laynes69 said:

This is the firebox of my Epa Woodfurnace. It has 4 manifold tubes, and the tube midway up is for zipper air. There is also zipper air in the front at the base of the loading door that heats the coals, and adds oxygen to the fire.

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And a video of the secondary burn in action.

Click to expand...

Now that is a very good example of secondary burn, thanks for posting it.
I wouldn't mind seeing a photo of that excellent design when the stoves not burning if that's possible (there's no rush by the way as I'm just collecting as bit of information at the moment).
One thing though, as I'm not totally in the know with regards to American terminology when you say wood furnace, does that have forced air going (forced in with a fan) into it or does it draw it in naturally?

Regards Scott.

On my post click on firebox and you will see the picture. The furnace is operated with natural draft, not forced draft.

This is a Quadrafire freestanding wood stove that I got new with the house this year. This is the air intake.

This is the inside top. There's some kind of a fluffy pad on top of the tubes.

The things at the back.

Here's my Jotul F500 Oslo. It has that cast manifold on both ends of the pipe. --Ian

slowp said:

This is a Quadrafire freestanding wood stove that I got new with the house this year. This is the air intake.

This is the inside top. There's some kind of a fluffy pad on top of the tubes.

The things at the back.

Click to expand...

I'm guessing the fluffy pad is insulation so the incoming air gets really hot before it joins the gasses at the top of the stove.

I'm quite liking the way that Haywire Haywood's Jotul has pipes for the incoming air as pipes look simpler to manufacture than pressed steel sections.

laynes69 said:

On my post click on firebox and you will see the picture. The furnace is operated with natural draft, not forced draft.

Click to expand...

I'm glad you mentioned that because I missed it first time round, that's a really good picture of it.

This is all great information folks, keep em coming.

laynes69 said:

This is the firebox of my Epa Woodfurnace. It has 4 manifold tubes, and the tube midway up is for zipper air. There is also zipper air in the front at the base of the loading door that heats the coals, and adds oxygen to the fire.

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And a video of the secondary burn in action.

Click to expand...

Nice! Is that the type of wood furnace that crappie Keith sells?

Rob

No. He sells yukon.

Usstove distributed them in 2005 and 2006 they never made them. The were made by SBI in Canada, which is still producing the furnace under the name Caddy. They are the only EPA Certified furnace available right now and have been for some time. Here is a link to the Caddy.

http://www.psg-distribution.com/product.aspx?CategoId=17&Id=377