Chimney Suggestions Attached Outbuilding/Shed

Chimney suggestions attached outbuilding/shed

PostBy: skobydog On: Thu Jan 19, 2017 2:29 pm

I planning an attached shed addition this year. I am considering putting a boiler in here rather in my garage. Being at the top of a steep hill does anyone see any issues with a chimney in this location? If not, what chimney heights would be required for a stoker boiler? Any other issues I should consider? thanks
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skobydog
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Nut Anthracite


Re: Chimney suggestions attached outbuilding/shed

PostBy: Lightning On: Thu Jan 19, 2017 2:35 pm

Ooooo, a strong wind coming from the opposite side of the house might cause a down draft. But since the shed is a separate entity it possibly might not be an issue. That's a tough one.... You could try it and add height later on if there is a problem, right?
Lightning
 
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size

Re: Chimney suggestions attached outbuilding/shed

PostBy: freetown fred On: Thu Jan 19, 2017 2:39 pm

SOP is 25' from any existing roof peaks. It looks like you'll be fine. I personally would put a cap on it no matter what.
Last edited by freetown fred on Thu Jan 19, 2017 2:41 pm, edited 1 time in total.
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut

Re: Chimney suggestions attached outbuilding/shed

PostBy: windyhill4.2 On: Thu Jan 19, 2017 2:40 pm

With the top of that chimney lower than the peak of the house roof,there are likely going to be some days when you will have a down draft issue. This will all be influenced some by which direction the prevailing winds are coming at the boiler stack.
You should figure a minimum of 15' for the stack height, from the boiler exhaust outlet up.
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: Chimney suggestions attached outbuilding/shed

PostBy: Sunny Boy On: Thu Jan 19, 2017 2:45 pm

You might find some of this helpful ?

http://www.woodheat.org/wind-chimney.html

Paul
Sunny Boy
 
Hand Fed Coal Boiler: Anthracite Industrial, domestic hot water heater
Baseburners & Antiques: Glenwood range 208, # 6 base heater, 2 Modern Oak 118.
Coal Size/Type: Nuts !
Other Heating: Oil &electric plenum furnace

Re: Chimney suggestions attached outbuilding/shed

PostBy: skobydog On: Thu Jan 19, 2017 3:02 pm

The building will be attached to the house. I was planning to use part of that room as a seasonal living space and the other part for a boiler room.

There would be a wall separating the boiler room with a separte entrance from outside. I don't think I would have to worry about flue gases.

So would the downdraft really only affect the fire?
skobydog
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Nut Anthracite

Re: Chimney suggestions attached outbuilding/shed

PostBy: SWPaDon On: Thu Jan 19, 2017 3:06 pm

A downdraft will push flue gases into the living space.
SWPaDon
 
Hand Fed Coal Furnace: Clayton 1600M
Coal Size/Type: Bituminous
Other Heating: Oil furnace

Re: Chimney suggestions attached outbuilding/shed

PostBy: SWPaDon On: Thu Jan 19, 2017 3:09 pm

I have 2 - 70 ft. pine trees about 75 ft. from my chimney. Winds coming from that direction would push smoke into my basement. In my case, a cap completely solved the problem
SWPaDon
 
Hand Fed Coal Furnace: Clayton 1600M
Coal Size/Type: Bituminous
Other Heating: Oil furnace


Re: Chimney suggestions attached outbuilding/shed

PostBy: windyhill4.2 On: Thu Jan 19, 2017 3:30 pm

If you are convinced on not going higher with that stack, at least put the stack on the outer corner of the addition. That will prevent less possibilities for a down draft situation.
windyhill4.2
 
Stoker Coal Boiler: 1960 EFM520 installed in truck box
Hand Fed Coal Stove: Crane 404 with variable blower
Coal Size/Type: 404-nut, 520 rice ,anthracite for both

Re: Chimney suggestions attached outbuilding/shed

PostBy: skobydog On: Thu Jan 19, 2017 3:31 pm

Alright. I think I've got it. The plan is for the building to go up this summer. If draft is an issue I will have to just convert it to storage, work space, or living space. thanks
Last edited by skobydog on Thu Jan 19, 2017 3:35 pm, edited 2 times in total.
skobydog
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Nut Anthracite

Re: Chimney suggestions attached outbuilding/shed

PostBy: skobydog On: Thu Jan 19, 2017 3:32 pm

windyhill4.2 wrote:If you are convinced on not going higher with that stack, at least put the stack on the outer corner of the addition. That will prevent less possibilities for a down draft situation.


thanks, I'll keep that in mind. :)
skobydog
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Nut Anthracite

Re: Chimney suggestions attached outbuilding/shed

PostBy: waldo lemieux On: Thu Jan 19, 2017 3:49 pm

I would say that if your going masonry and filling the block w/ vermiculite youll be fine. Especially if you put it on the inside of the building. The warmer your stack the better your draft.....
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

Re: Chimney suggestions attached outbuilding/shed

PostBy: Den034071 On: Thu Jan 19, 2017 6:09 pm

Bricklayer 45 years plus .Go higher than roof .Just like buying insurance over the peak is Better .Going higher will take a mason less than a half day . jack
Den034071
 
Hand Fed Coal Stove: Hitzer, 3095

Re: Chimney suggestions attached outbuilding/shed

PostBy: McGiever On: Mon Jan 23, 2017 10:32 pm

skobydog wrote:I planning an attached shed addition this year. I am considering putting a boiler in here rather in my garage. Being at the top of a steep hill does anyone see any issues with a chimney in this location? If not, what chimney heights would be required for a stoker boiler? Any other issues I should consider? thanks


Stoker boiler...I know a couple guys who put them in truck bodies and/or sheds w/ 15' max stove pipe...after all we're not talking natural draft, these stokers are fan forced draft when under load. Having minimal bends, insulated pipe thru roof and what's outside and a cap will all be pluses. Take the pipe straight up and out the roof w/ a flashing...keep outside pipe exposure to a minimum and no horizontal pipe to collect flyash in. No need to be skerd of having a flashing on a roof...there are millions of them out there, you are not a pioneer of flashing a roof penetration. ;)

Come on guys, no need to be skerd w/ a fan forced draft. :)
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek