Minor Explosion In Coal Stove

Re: Minor Explosion In Coal Stove

PostBy: KingCoal On: Fri Nov 22, 2013 5:01 pm

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

unless................his comments are about another unit ?
KingCoal
 
Hand Fed Coal Stove: Riteway # 37, Comforter Stove Works
Baseburners & Antiques: 2014 DTS C17 Base Burner
Coal Size/Type: Nut Anth.
Other Heating: none

Re: Minor Explosion In Coal Stove

PostBy: titleist1 On: Fri Nov 22, 2013 5:04 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.
titleist1
 
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

Re: Minor Explosion In Coal Stove

PostBy: Lightning On: Fri Nov 22, 2013 5:26 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.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

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Re: Minor Explosion In Coal Stove

PostBy: KingCoal On: Fri Nov 22, 2013 7:35 pm

seems like all the more reason to get it burning hot before the refill process.
KingCoal
 
Hand Fed Coal Stove: Riteway # 37, Comforter Stove Works
Baseburners & Antiques: 2014 DTS C17 Base Burner
Coal Size/Type: Nut Anth.
Other Heating: none

Re: Minor Explosion In Coal Stove

PostBy: coalcracker On: Sat Dec 07, 2013 1:50 pm

Did you have a stove pipe damper closed off ? If so, that's why. Also see below.
Last edited by Richard S. on Mon Dec 09, 2013 12:47 am, edited 2 times in total.
Reason: Removed copyrighted text.
coalcracker
 
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

Re: Minor Explosion In Coal Stove

PostBy: SuperBeetle On: Mon Dec 09, 2013 3:41 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.
SuperBeetle
 
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite

Re: Minor Explosion In Coal Stove

PostBy: Lightning On: Mon Dec 09, 2013 4:06 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.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: Minor Explosion In Coal Stove

PostBy: SMITTY On: Mon Dec 09, 2013 4:10 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? ;)
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Minor Explosion In Coal Stove

PostBy: franco b On: Mon Dec 09, 2013 4:15 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.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: Minor Explosion In Coal Stove

PostBy: SuperBeetle On: Mon Dec 09, 2013 4:45 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.
SuperBeetle
 
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite

Re: Minor Explosion In Coal Stove

PostBy: Wood'nCoal On: Mon Dec 09, 2013 11:06 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.
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: Minor Explosion In Coal Stove

PostBy: ridgeracing On: Sat Dec 21, 2013 11:23 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.
ridgeracing
 
Hand Fed Coal Stove: DS Machine Stove
Stove/Furnace Make: D.S Machine
Stove/Furnace Model: DS1600WH

Re: Minor Explosion In Coal Stove

PostBy: Maro On: Sun Jan 05, 2014 5:11 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
Maro
 
Coal Size/Type: Nut
Other Heating: Gravity fed hopper
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 50-93

Re: Minor Explosion In Coal Stove

PostBy: SuperBeetle On: Sun Jan 05, 2014 5:15 pm

Wait till ya have a nuclear blast and see the ash cloud going across the room :shock:
SuperBeetle
 
Hand Fed Coal Stove: Harman Mark II
Coal Size/Type: Pea, Nut, & Stove Anthracite

Re: Minor Explosion In Coal Stove

PostBy: SWPaDon On: Sun Jan 05, 2014 7:19 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:
SWPaDon
 
Hand Fed Coal Furnace: Clayton 1600M
Coal Size/Type: Bituminous. Labeled as 'Big Vein', about the size of acorns. Makes a lot of ash, but heats well and lasts longer than my previous coal.

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