observations concerning base heater fire pot linings

Re: observations concerning base heater fire pot linings

PostBy: KingCoal On: Sat Jul 19, 2014 2:36 pm

yes, the exhaust gas passing by both sides of the ash pit (right beside the air inlet, on the left side) and heating the floor of the ash pit from the base chamber should increase the primary air temp. significantly.
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: observations concerning base heater fire pot linings

PostBy: Sunny Boy On: Sat Jul 19, 2014 3:01 pm

KingCoal wrote:yes, the exhaust gas passing by both sides of the ash pit (right beside the air inlet, on the left side) and heating the floor of the ash pit from the base chamber should increase the primary air temp. significantly.



That should help raise the burn efficiency.

It'll be interesting to hear if, and how much, difference that extra pre-heat makes in how fine the ash is.

Paul
Sunny Boy
 
Hand Fed Coal Boiler: Anthracite Industrial, domestic hot water heater
Baseburners & Antiques: Glenwood range 208, # 6 base heater, 2 Modern Oak 118.
Coal Size/Type: Nuts !
Other Heating: Oil &electric plenum furnace

Re: observations concerning base heater fire pot linings

PostBy: KingCoal On: Sat Jul 19, 2014 5:15 pm

indeed. in the original configuration burnt coal came out as some light fine ash and pieces that looked like they had been bleached to near white, still pretty much in the shape they went in but "puffed" and seperating into layers like slate or shale.
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

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Re: observations concerning base heater fire pot linings

PostBy: steamshovel On: Wed Jul 23, 2014 8:13 am

I have a radiant baseheater and the original round firepot was lined with a very thin coat of red firebrick material, a thin layer only 1/8" to 1/4" thick. looked like the firepot was dipped in a slurry of the stuff when first made, then dried/hardened and that was it. similar to the finish and thickness you would parge a home foundation with, but red gritty firebrick material instead. it had chipped off on the i.d. in 2 places, about the size of a silver dollar, and those areas had begun rusting into the pot. if let go it will rot a hole through the firepot, coal burning is very acidic and very corrosive. some of these don't have huge firepots and the thicker the lining means less coal capacity and heating ability. I relined it with a modern refractory material and went about 1/2" thick all around.
steamshovel
 

Re: observations concerning base heater fire pot linings

PostBy: steamshovel On: Tue Aug 05, 2014 1:49 pm

here's the firepot in the "model 150" base heater. notice the rust spots on it, that is where the thin red refractory paint coating had worn off over time. it begins to rust right through the firepot. I have heard from others saying theirs had holes rotted through the firepot. This is how it starts. Don't know what the original lining was made of, but it looks like a red slurry of course gritty red brick material, that could be painted on, of the pot was dipped in it.

I cleaned and relined over this surface. not too worried about it, if it cracks or burns through, I'll have it recast. if I decide to burn this stove full time to heat with, will have new grates and pot cast up using old ones as mold pattern.

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steamshovel
 

Re: observations concerning base heater fire pot linings

PostBy: KingCoal On: Tue Aug 05, 2014 2:13 pm

hmmm, that's interesting stuff for sure.

that's the thinnest coating i've seen but surely better than nothing in the majority of cases.
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: observations concerning base heater fire pot linings

PostBy: franco b On: Tue Aug 05, 2014 2:19 pm

Looks more like a layer of oxidized metal to me that has chipped off. The lower part that runs cooler has no such layer.
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: observations concerning base heater fire pot linings

PostBy: steamshovel On: Tue Aug 05, 2014 9:58 pm

it's not oxidized metal, if you saw the pot in person, you'd see how it's smeared across the top edge like cement. when I clean it with a certain detergent solvent, it comes off like red paint, i.e. it turns the cleaner red.

it's red refractory liner, and I've seen it on other baseheaters like this. here it is on another radiant baseheater
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steamshovel
 

Re: observations concerning base heater fire pot linings

PostBy: franco b On: Tue Aug 05, 2014 11:16 pm

Is it just the light or is that magazine really so much redder than the fire pot? the evenness would imply to me a coating.
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: observations concerning base heater fire pot linings

PostBy: steamshovel On: Wed Aug 06, 2014 6:20 am

most likely it's, the bottom firepot area has a layer of dust on it, dulling the color, while the top magazine area hanging downward, did not accumulate a layer of dust, being it's not a horizontal surface, having less dust buildup it appears brighter ? or it was fired at one time, faded the firepot color, and then it was cleaned and put away
steamshovel
 

Re: observations concerning base heater fire pot linings

PostBy: steamshovel On: Mon Sep 08, 2014 5:25 pm

here is another baseheater with the same thin, red cement-like firepot lining. looks like the same type that was on my baseheater, and this one is also coming off in a few spots and beginning to rust. if left go the stove restorers have told me, it would eventually rot a hole in the firepot
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Re: observations concerning base heater fire pot linings

PostBy: Photog200 On: Mon Sep 08, 2014 6:55 pm

steamshovel wrote:here is another baseheater with the same thin, red cement-like firepot lining. looks like the same type that was on my baseheater, and this one is also coming off in a few spots and beginning to rust. if left go the stove restorers have told me, it would eventually rot a hole in the firepot


That Red material on the fire pot looks like coal ash baked on the pot. Some coal does have a reddish ash.
Randy
Photog200
 
Baseburners & Antiques: Colonial Clarion cook stove, & Kineo #15 base heater
Coal Size/Type: Blaschak Chestnut
Other Heating: Electric Baseboard

Re: observations concerning base heater fire pot linings

PostBy: steamshovel On: Mon Sep 08, 2014 7:24 pm

understandable assumption, but it's not red ash. I have a baseheater with that same lining on it. It is a coating put on at the factory that is red in color. earlier in this thread is one that is in like new condition, it's not red ash. here it is again
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Re: observations concerning base heater fire pot linings

PostBy: nortcan On: Tue Sep 09, 2014 12:14 pm

Hi, that red color seems very curious, hum for me ;) . So uniform............
Would be curious to hear what Emery from Stove Hospital says about it :!:
nortcan
 
Stove/Furnace Make: Stuart,Peterson/ Grander
Stove/Furnace Model: Sunnyside/ Golden Bride

Re: observations concerning base heater fire pot linings

PostBy: steamshovel On: Thu Sep 11, 2014 11:09 am

steamshovel wrote:here is another baseheater with the same thin, red cement-like firepot lining. looks like the same type that was on my baseheater, and this one is also coming off in a few spots and beginning to rust. if left go the stove restorers have told me, it would eventually rot a hole in the firepot



if you look at the top edge of the use baseheater in 2 pieces I put up, you'll see the edge of the mortar like red material smeared on there. it's uniform but you can see how they troughed it in and left seams and ridges in that red stuff. the firepot on my baseheater had the same consistency and when I used a strong solvent on it, started to liquify it and turned into a red liquid.

it's definitely a firepot lining material of days gone by. best I can describe it is, the same as red brick but smeared over the firepot surface instead of molded into bricks.
steamshovel
 

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