Restarting coal fire after being unattended

Restarting coal fire after being unattended

PostBy: jimbo On: Tue Aug 26, 2008 7:01 pm

If a fire is not attended to and there is unbunt coal in furnace do you have to clean all the unburnt coal that was not burned out before restarting?
Or can you start a new fire on top of coal that did not burn?
jimbo
 
Hand Fed Coal Furnace: Fire Chief 700
Coal Size/Type: Stove or nut
Stove/Furnace Make: fire chief
Stove/Furnace Model: fc700

Re: Restarting coal fire after being unattended

PostBy: Bobs86GN On: Tue Aug 26, 2008 7:12 pm

That's what worked for me. I'd just clear the ash out a little first and start over. But don't go by me-I'm new around here-and I'm just gaining enough knowledge to become dangerous. :oops:
Bobs86GN
 
Stove/Furnace Make: Hydra Fire
Stove/Furnace Model: Hitzer 50-93

Re: Restarting coal fire after being unattended

PostBy: LsFarm On: Tue Aug 26, 2008 7:18 pm

It usually is easier to shovel out the old partially burnt coal and start from clean grates. Then once you have established a good hot coal fire, toss the 'old coal' on the fire,, it will have the best possible opportunity to burn on the top/center of the fresh fire.. Sometimes the unburnt remaining coal won't burn very well on the bottom of the fire, and these pieces of unburnt coal can be difficult to get ground up by the grates and into the ashpan.. if too much of this large, unburnable stuff accumulates, then getting enough air to the fire can become a problem. As well as jamming in the grate openings while shaking.

Once you decide to burn for several days or weeks, or for the season,, load your firebox to the top of the firebrick,, the coal will burn better in a deep coal bed, more completely, and it will be easier to control, and you can even slow the burn rate more with a deep fire than with a shallow fire..

If I were to build a hand-fed firebox, now that I've made several mistakes and struggled with poor designs,, I'd make the firebox at least as deep as it is square,, so it would be probably 16"x16"x 20" deep.. with all the bottom of the fire being shaker grates.. Firebrick lined. If I were to make it round, it would have the rough dimesions of a 5 gallon bucket..

Hope this helps.. Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

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Re: Restarting coal fire after being unattended

PostBy: LsFarm On: Tue Aug 26, 2008 7:20 pm

If you catch the fire while still hot, and some of the coal is still hot, I used to use two 1/4 split pieces of firewood, one in each hand, scrape the hot coals into a row between the pieces and make a channel for the fire to stay hot and be rebuilt in.. this usually worked for me in my 'Big Bertha' when it was still being burnt as a hand feed boiler.

Greg L
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Restarting coal fire after being unattended

PostBy: Devil505 On: Tue Aug 26, 2008 8:37 pm

I agree. If the fire is dead...clean it out & start from scratch for a much easier relight. (I always dig unburnt coal out of the ashes to re burn on a fresh fire. kinda feel like I'm digging out 1/2 smoked cigarette butts when I was a desperate smoker some mornings but...."waste not want not"! :lol:)
Devil505
 
Stove/Furnace Make: Harman
Stove/Furnace Model: TLC-2000

Re: Restarting coal fire after being unattended

PostBy: CapeCoaler On: Tue Aug 26, 2008 8:45 pm

Do it once - do it right the first time!
Clean it out and you get the highest probability of success.
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: Restarting coal fire after being unattended

PostBy: Bobs86GN On: Wed Aug 27, 2008 12:05 am

See, I told you I was becoming dangerous. Listen to the other guys.
Bobs86GN
 
Stove/Furnace Make: Hydra Fire
Stove/Furnace Model: Hitzer 50-93

Re: Restarting coal fire after being unattended

PostBy: CapeCoaler On: Wed Aug 27, 2008 12:26 am

A soil sifter works to get the re-burnables out after a miss-fire!
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: Restarting coal fire after being unattended

PostBy: Cap On: Wed Aug 27, 2008 12:42 pm

Lots less aggravation if you start clean. You really can't get old coal to burn underneath of a new wood fire until which time the entire fire becomes one & is hot with wood coals. My .02 cents worth
Cap
 
Hand Fed Coal Boiler: Harman SF 250, domestic hot water loop, heat accumulator

Re: Restarting coal fire after being unattended

PostBy: oliver power On: Sun Aug 31, 2008 9:41 am

I agree with others. Clean it out , and start from scratch. That is what I would recommend to anyone who is new to starting coal fires. On the other hand , I start the coal fire in my garage stove several times through out the winter. This is what I do. Instead of emptying the entire firebox , which can be quite messy , I shake it down good. Then , take what's left in the firebox and push it off to the sides with the poker. Do this till you get down to the grates , or at least close to the grates. Now your starting a much smaller fire. Use charcoal size pieces of wood. As the fire gets going , use new coal over the fire. Once the new coal is going , even out the firebox with the stuff pushed off to the sides. Before you know it , the whole bed of coals (new & old) will be glowing orange.
oliver power
 
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