Chimney question

[kuribo]

Hello-

Finally finished the install of a Econoburn 200. The boiler is inside a small concrete block outbuilding that has a wooden structure around it. I am putting in the chimney and have a question- due to the location and structure, I need about a 6.5' horizontal run out of the boiler to my cleanout tee where the vertical section begins. I contacted the chimney manufacturer ((Selkirk) and they expressed doubts that I would get enough draft with the long horizontal run, the exposed chimney, and the cold Wisconsin winters. They suggested I call Econoburn. I did, they couldn't say, other than to make sure I have a barometric damper and to measure the draft. Anyone have a comparable situation and found a long horizontal run an issue? Thanks for your time.

 

[salecker]

I have a about a 4 ft horizontal run on my Econoburn 200.
Fly ash usually fills the horizontal run about 1/3 full,even when the clean out is empty

 

[blades]

can you get any type of incline in to that run? what is the roof structure that you can't go up through it? ( somewhere closer)

 

[andym]

Avoid an exterior chimney if at all possible.

 

[kuribo]

The building is concrete block, about 8' by 9' inside with a concrete slab roof. The dump zone for the boiler takes up all the ceiling area so I have to go out a side wall. The shortest I can make the horizontal run to the outside is about 6'. I plan to use class a insulated chimney from the back of the boiler all the way through. I can slope the horizontal run maybe half and inch per foot.

 

[kuribo]

I think I have found a way to shorten the horizontal to about 4 feet. That should work. Thanks for the comments.

 

[salecker]

Have you considered adding storage anywhere?
Until you have storage capability's you are going to be chasing any efficacy's that you think you are at.
Your boiler will be a completely different machine if you add storage,your life will be completely different if you add storage.
Without storage you will be a slave to the boiler.

 

[kuribo]

I have 1000 gallons of storage. The question is about the chimney- storage has nothing to do with it.

 

[salecker]

Ahh yes storage does have to do with the chimmany
With storage you should not see much idling once you get the hang of the boiler.
Without storage the boiler would idel a lot,the the chimmany comes into play as creosote will build up from the boiler ideling.

 

[kuribo]

Ahh yes storage does have to do with the chimmany
With storage you should not see much idling once you get the hang of the boiler.
Without storage the boiler would idel a lot,the the chimmany comes into play as creosote will build up from the boiler ideling.

Storage has nothing to do with my question about a long horizontal run. With or without storage, if there isn't enough draft, the boiler won't operate, storage or not. But thanks for your contribution.

 

[cumminstinkerer]

@kuribo I don't have only a couple inches of horizontal run but I don't have much chimney either, total of about 12 feet, it drafts fine for me, but its also in my garage that is unfinished so I don't worry about a little smoke spillage. Running for DHW this summer the Dwyer would show zero to a positive draft when I first light it and it still worked fine. once its warm it'll run around -.02-.06 if it's cold as heck out.

 

[salecker]

Storage has nothing to do with my question about a long horizontal run. With or without storage, if there isn't enough draft, the boiler won't operate, storage or not. But thanks for your contribution.

You mentioned a dump zone...
That threw me off.I haven't heard of anyone installing a dump zone in addition to storage.
I did give you my experience with the horizontal run.

 

[kuribo]

You mentioned a dump zone...
That threw me off.I haven't heard of anyone installing a dump zone in addition to storage.
I did give you my experience with the horizontal run.

My boiler is in an outbuilding, my storage in my basement below the level of the boiler. Storage won't work as a dump zone in such a situation.

 

[Bad LP]

My boiler is in an outbuilding, my storage in my basement below the level of the boiler. Storage won't work as a dump zone in such a situation.

A powered dump zone will work just fine so this leads me to ask what are you doing for a powerless dump zone?

 

[kuribo]

The idea is to be able to dump heat when there is no power. That's where a thermosiphon comes in.