Fought the Backdraft and Won

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Uglysquirrel
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Stove/Furnace Model: Pocono

Post Tue. Jan. 19, 2010 8:47 pm

You guys probably have done this but though I'd discuss it more since it may happen to others.

With the Pocono off for 3-4 days due to warm weather, the flue started to backdraft, this happen with the old wood stove when it was rainy like today so I tried my old trick and it worked.

Took a plywood piece that fit over the ash door, cut two 2.5" holes in it and attached an old 130 cfm dual blower on the wood centered over the two cut holes, put a piece of foil over the baro, put the board up against the open ash door frame and left it there for a couple minutes and blam, flow was reversed, then put a 1200 watt heater in to bottom for 10 minutes, stack temp went to 90 deg, draft was .02 and start up was a beautiful thing. Always remove the foil before start up.

Don't let reverse draft stop you.

Fur what it is worth.

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rockwood
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Hot Air Coal Stoker Furnace: Stokermatic coal furnace
Hand Fed Coal Stove: Rockwood Stoveworks Circulator
Baseburners & Antiques: Malleable/Monarch Range
Coal Size/Type: Soft coal: Lump and stoker (slack coal)
Location: Utah

Post Tue. Jan. 19, 2010 9:12 pm

Does the chimney run up the exterior of your home? Is it masonry? Just curious.

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Uglysquirrel
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Stove/Furnace Model: Pocono

Post Tue. Jan. 19, 2010 9:39 pm

Yes, from the basement into a unheated garage, then outside to the top of the 2nd story. This backdraft thing would likely not happen on rainy days when not using the stove if it were a center chimney and if the stove were on everything would draft fine.


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Uglysquirrel
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Joined: Mon. Jan. 07, 2008 8:27 pm
Stove/Furnace Model: Pocono

Post Tue. Jan. 19, 2010 9:41 pm

By the way, yes masonry, approx 6" x 10" inside dimensions of ceramic flue.

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rockwood
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Posts: 1371
Joined: Sun. Sep. 21, 2008 7:37 pm
Hot Air Coal Stoker Furnace: Stokermatic coal furnace
Hand Fed Coal Stove: Rockwood Stoveworks Circulator
Baseburners & Antiques: Malleable/Monarch Range
Coal Size/Type: Soft coal: Lump and stoker (slack coal)
Location: Utah

Post Tue. Jan. 19, 2010 10:08 pm

Uglysquirrel wrote:if it were a center chimney and if the stove were on everything would draft fine.
I think you're right...Oh well, you make do with what you have. ;)

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SMITTY
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Stoker Coal Boiler: Patriot Coal - (custom built by Jim Dorsey, Taunton MA - RIP 4/18/13)
Hand Fed Coal Stove: Harman Mark III (SOLD!)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler
Location: West-Central Mass

Post Tue. Jan. 19, 2010 10:15 pm

My buddy always has to stick his wife's hairdryer in the flue before he lights his wood stove. It's an external, short, concrete block with a clay liner. Draft is continuously reversed, unless heated.

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