Minor Explosion in Coal Stove

Modern and vintage hand fired coal stove are similar to a wood stove and in some cases can burn either. They need to be regulated and fed by hand usually every 12 to 24 hours depending on your usage. They require no power to operate making them ideal for rural settings with long power outages.
KingCoal
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Posts: 3170
Joined: Wed. Apr. 03, 2013 1:24 pm
Hand Fed Coal Stove: 3-Locke Warm Morning #120, 1-Locke Warm Morning #524B
Baseburners & Antiques: 2014 DTS C17 Base Burner 1- Crawford #40 BB
Coal Size/Type: Nut Anth.
Other Heating: none
Location: Elkhart county, IN.

Post Fri. Nov. 22, 2013 4:01 pm

that's why i'm confused IOF has a DSM 1600, same internal set up.

unless................his comments are about another unit ?
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titleist1
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Posts: 4404
Joined: Wed. Nov. 14, 2007 4:06 pm
Hot Air Coal Stoker Stove: Harman Mag Stoker (old style) one in basement, one in workshop
Hand Fed Coal Stove: Harman Mark III on standby for long power outages
Coal Size/Type: Rice/Anthracite; Nut/Anthracite
Location: Cecil County, MD

Post Fri. Nov. 22, 2013 4:04 pm

I used a Mark III for over 15 years (no secondary air control) and could avoid the explosions by doing basically what kingcoal stated. open ash pan to liven up the fire for a couple minutes prior to shakedown, after it 'livened up' add as much coal as possible leaving a corner exposed for the flames to come through there, leave ash door open a couple more minutes, blue flames would get established on new coal and then close it up. I could go back in about 1/2 hour if I wanted and cover that exposed corner at that point.
I drive a VW TDI, heat my home & workshop with two coal stokers and have two vintage JD diesel tractors....
The EPA just loves me!!

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Lightning
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Posts: 8304
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Fri. Nov. 22, 2013 4:26 pm

KingCoal wrote:that's why i'm confused IOF has a DSM 1600, same internal set up.

unless................his comments are about another unit ?
His draft is very weak where yours is strong.

KingCoal
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Posts: 3170
Joined: Wed. Apr. 03, 2013 1:24 pm
Hand Fed Coal Stove: 3-Locke Warm Morning #120, 1-Locke Warm Morning #524B
Baseburners & Antiques: 2014 DTS C17 Base Burner 1- Crawford #40 BB
Coal Size/Type: Nut Anth.
Other Heating: none
Location: Elkhart county, IN.

Post Fri. Nov. 22, 2013 6:35 pm

seems like all the more reason to get it burning hot before the refill process.
" all of learning is the understanding of relationships" George Washington Carver

"the true measure of a man is the way he treats someone who can do him absolutely no good" Samuel Johnson

"if it was any simpler, it wouldn't work " unknown engineer

coalcracker
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Posts: 146
Joined: Mon. Jan. 24, 2011 6:33 pm
Hand Fed Coal Boiler: Standard sealed hot water boiler, hand fed
Hand Fed Coal Stove: Harman Mark I Magnafire
Baseburners & Antiques: Lehigh Oak 18, Washington potbelly, Sears Roebuck parlor cabinet, PIttston 6 lid cook stove, vintage combo gas/coal cook stove 4 lid
Coal Size/Type: nut
Stove/Furnace Make: Harman
Stove/Furnace Model: Mark I Magnafire

Post Sat. Dec. 07, 2013 12:50 pm

Did you have a stove pipe damper closed off ? If so, that's why. Also see below.
Last edited by coalcracker on Fri. Mar. 31, 2017 11:56 pm, edited 3 times in total.
Reason: Removed copyrighted text.
Coal stoves without fuel, are heavy, expensive decorations. Are there any coal mines in YOUR home state ? If you talk the talk, you have to walk the walk.

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SuperBeetle
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Posts: 1340
Joined: Sat. Dec. 15, 2007 1:22 pm
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite
Location: Gettysburg, PA

Post Mon. Dec. 09, 2013 2:41 pm

coalcracker wrote:Did you have a stove pipe damper closed off ? If so, that's why.
You don't need a damper closed off on order for this to happen. I have seen this happen in many different types of set ups and the one thing they all had in common was lack of over fire air.
" A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed" -- 2nd Amendment to the United States Constitution....
IT AIN'T ABOUT HUNTING Two to the chest............one to the head. The Mozambique Drill :rambo3:

- John

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Lightning
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Posts: 8304
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Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Mon. Dec. 09, 2013 3:06 pm

SuperBeetle wrote:
coalcracker wrote:Did you have a stove pipe damper closed off ? If so, that's why.
You don't need a damper closed off on order for this to happen. I have seen this happen in many different types of set ups and the one thing they all had in common was lack of over fire air.
I agree. You could have the manual damper wide open but if there is lack of secondary air to keep the volatile gases diluted then yer in for a boom.

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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 Mon. Dec. 09, 2013 3:10 pm

coalcracker wrote:Did you have a stove pipe damper closed off ? If so, that's why. Also see below.
Yep - done the BOOM several times in both my Harman MARK I and MARK III stoves ... wait for it ........ WITHOUT a DAMPER. Imagine that? ;)
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neither inclined nor determined to commit crimes. ...Such laws make things worse
for the assaulted and better for the assailants, they serve rather to
encourage than to prevent homicides, for an unarmed man may be attacked with
greater confidence than an armed man."

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franco b
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Joined: Wed. Nov. 05, 2008 5:11 pm
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea
Location: Kent CT

Post Mon. Dec. 09, 2013 3:15 pm

Lightning wrote:I agree. You could have the manual damper wide open but if there is lack of secondary air to keep the volatile gases diluted then yer in for a boom.
I agree with this but also consider that after shaking a surplus amount of primary air can penetrate the coal bed if the air damper is open to then act as secondary air. You can still have a boom but the chances are much less.

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SuperBeetle
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Posts: 1340
Joined: Sat. Dec. 15, 2007 1:22 pm
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite
Location: Gettysburg, PA

Post Mon. Dec. 09, 2013 3:45 pm

Yep I've had a few booms myself. No damper installed. I have a few buddies that have had the same thing happen one with a damper wide open and two others with no dampers installed. In all cases there was no over fire air. In order to solve this my problem in my application, I leave the load door cracked so it pulls in some secondary air. Works well.......... ya just gotta remember to latch the door after it lights off.
" A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed" -- 2nd Amendment to the United States Constitution....
IT AIN'T ABOUT HUNTING Two to the chest............one to the head. The Mozambique Drill :rambo3:

- John

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CoalHeat
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Posts: 8327
Joined: Sat. Feb. 10, 2007 9:48 pm
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert
Location: Stillwater, New Jersey

Post Mon. Dec. 09, 2013 10:06 pm

Don't matter if there is a damper or not, it's the lack of overfire air that causes it. When reloading I always leave a little spot uncovered so the flames can burn off the gases.
Heating a circa 1832 farmhouse with a Harman Magnafire Mark I & a 1959 EFM 350 (heating DHW).
100% Oil Free!
"It's what we learn after we think we know it all that counts."

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ridgeracing
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Posts: 160
Joined: Mon. Mar. 05, 2012 8:59 pm
Hand Fed Coal Stove: DS Machine Stove
Stove/Furnace Make: D.S Machine
Stove/Furnace Model: DS1600WH
Location: Elizabethtown, PA

Post Sat. Dec. 21, 2013 10:23 pm

I am just chimming in hear, with my ds1600 having auto secondary air, daily after a 12-24hr burn I shake down 1st fully covering all red coals and reload. 30-60 seconds later I have blue flames. Never any explosions . Never opening any doors or touching mpd.

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Maro
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Posts: 10
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Coal Size/Type: Nut
Other Heating: Gravity fed hopper
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 50-93
Location: Syracuse NY

Post Sun. Jan. 05, 2014 4:11 pm

I just had a little pop happen yesterday. I shook the bed down thus moving fresh coal from the hopper (gravity fed) to the bed then I opened the hopper door (top loading) and it made a blue flash and a popping sound. There was no damage done. It startled me more than anything.
:o
"They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin

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SuperBeetle
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Posts: 1340
Joined: Sat. Dec. 15, 2007 1:22 pm
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite
Location: Gettysburg, PA

Post Sun. Jan. 05, 2014 4:15 pm

Wait till ya have a nuclear blast and see the ash cloud going across the room :shock:
" A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms shall not be infringed" -- 2nd Amendment to the United States Constitution....
IT AIN'T ABOUT HUNTING Two to the chest............one to the head. The Mozambique Drill :rambo3:

- John

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SWPaDon
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Posts: 9967
Joined: Sun. Nov. 24, 2013 12:05 pm
Hand Fed Coal Furnace: Clayton 1600M
Coal Size/Type: Bituminous
Other Heating: Oil furnace
Location: Southwest Pa.

Post Sun. Jan. 05, 2014 6:19 pm

SuperBeetle wrote:Wait till ya have a nuclear blast and see the ash cloud going across the room :shock:
You been watchin me fire my Clayton? Where did ya hide the camera? :lol: :lol:

I've singed my eyebrows, mustache and arm hair more than once. Last time it happened, I stood up just in time to watch the flames completely wrap around my waist. :shock:

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