Confused barametric dampers for dura vent doublewall?

Confused barametric dampers for dura vent doublewall?

PostBy: 70marlin On: Sat Oct 16, 2010 12:30 pm

I have a new Harman SF-A 1500 wood/coal furnace that have just installed in my basement. My instruction wanted a barometric damper installed in my chimney to control my draft which I feel is a good thing!
My problem is that the application required double wall vent pipe due to close clearances in and round my LP gas furnace. Installing the furnace went well except I couldn't find a double walled barometric damper. I used 90 elbows instead, just to get it up and running hoping I could figure out how to do a barometric damper later? I really could use some help!
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70marlin
 
Stove/Furnace Make: Harman
Stove/Furnace Model: SF 1500A

Re: Confused barametric dampers for dura vent doublewall?

PostBy: rberq On: Sat Oct 16, 2010 1:12 pm

I don't know if it is practical for you, but my oil burner for years had a baro installed directly in the brick chimney, above and at a right angle to where the metal pipe entered the brickwork. It was a heavy-duty affair, moving plate was quite heavy steel or cast iron, but it was well-balanced and it worked just fine.
rberq
 
Hand Fed Coal Stove: DS Machine 1300
Coal Size/Type: Nut -- Kimmel/Blaschak/Reading
Other Heating: Oil hot water radiators, propane

Re: Confused barametric dampers for dura vent doublewall?

PostBy: Wood'nCoal On: Sat Oct 16, 2010 1:41 pm

We need to see more photos of your installation, particularly the smoke pipe from the Harman to the chimney.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert


Re: Confused barametric dampers for dura vent doublewall?

PostBy: CapeCoaler On: Sat Oct 16, 2010 6:29 pm

Pics of the smoke pipe from start to finish will help...
A double wall Tee will do the trick...
Have a stove shop make an adapter that will fit the Tee end and the baro end...
That is what I did with my double wall install...
Just need to face the baro away from combustables...
CapeCoaler
 
Stoker Coal Boiler: want AA130
Hand Fed Coal Stove: DS Machine BS#4, Harman MKII, Hitzer 503,...
Coal Size/Type: Pea/Nut/Stove

Re: Confused barametric dampers for dura vent doublewall?

PostBy: Razzler On: Sat Oct 16, 2010 7:24 pm

From the picture it looks like you have single walled pipe right out of the furnace? If so put the barometric damper right after the first 90'.
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Razzler
 
Hand Fed Coal Stove: Harman SF 250