Furnace Recommendation

JRHAWK9

Minister of Fire
Jan 8, 2014
1,138
Wisconsin Dells, WI
damn!

Those look to be some pretty porous bricks. Have you tried a different brand? How did you cut them?

I've never encountered what you guys have shown.
 

brenndatomu

Minister of Fire
Aug 21, 2013
4,079
NE Ohio

KC Matt

Burning Hunk
Oct 29, 2016
116
Kansas City
Thanks! Funny... I am an automation engineer. I could easily rig up a solution. Problem is, everything I’m familiar with is industrial and costs thousands of dollars.

PLC, 4-20mA analog input card, 24v output card, thermocouple, few breakers, power supply, panel, few lights, push buttons, maybe an alarm horn... this would be the ticket! It would also cost about $2k. And that’s on the cheap end of the spectrum!
Depending on what you're trying to accomplish, you can build a highly effective controller for less than that. I have around $400 in mine including 3 Johnson Control boxes, 8 RIB spdt relays, a homemade enclosure (couldn't find one big enough) and wiring. A friend offered to design and print a circuit board to the same end, but it's hard to imagine anything working better than what I have.
 

KC Matt

Burning Hunk
Oct 29, 2016
116
Kansas City
Wow, those things look 5 years old!
What's up with the different shape?
Does burning green wood cause the fire brick to spalt like that? I bought a used Quadra Fire insert that had little use but the brick were trash, looking like they had all "popped:" on the fire side over and over again. They were burning unsplit wood that was "seasoned" a year and the firebox looked awful.

I believe wet wood does cause that kind of damage in the brick but I can't prove it.
 

Boilers

Member
Mar 19, 2018
60
Indiana
Wow, those things look 5 years old!
What's up with the different shape?
Yeah I don’t understand how this is happening at such an extreme. People been burning for years and never had one clinker. I’ve got tons of them! Worst part is... I have probably 2 rick or more of the same wood already cut and split :(

I cut the new firebrick myself, so I cut them to fit quite a bit closer than the factory brick. I used an angle grinder with a tile blade. Cut like butter.
 

3fordasho

Minister of Fire
Jul 20, 2007
808
South Central Minnesota
Yeah I don’t understand how this is happening at such an extreme. People been burning for years and never had one clinker. I’ve got tons of them! Worst part is... I have probably 2 rick or more of the same wood already cut and split :(

I cut the new firebrick myself, so I cut them to fit quite a bit closer than the factory brick. I used an angle grinder with a tile blade. Cut like butter.

It is the red elm, I get the same thing. It's great firewood when you find them standing dead, not one spec of bark and bleached from the sun, top half ready to go. Well worth it despite the clinker issue.
 
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brenndatomu

Minister of Fire
Aug 21, 2013
4,079
NE Ohio
People been burning for years and never had one clinker. I’ve got tons of them!
Oh I have burnt plenty of wood that makes clinkers...just never had them stick to the bricks before. But might be because I rarely clean the ashes out down to bare bricks....
 

Boilers

Member
Mar 19, 2018
60
Indiana
Oh I have burnt plenty of wood that makes clinkers...just never had them stick to the bricks before. But might be because I rarely clean the ashes out down to bare bricks....
Well I religiously pull the coals to the front of the box when reloading, but I also religiously keep the area in front of the bottom front air supply clear. This probably doesn’t help the issue.
 

JRHAWK9

Minister of Fire
Jan 8, 2014
1,138
Wisconsin Dells, WI
Oh I have burnt plenty of wood that makes clinkers...just never had them stick to the bricks before. But might be because I rarely clean the ashes out down to bare bricks....
really? I scrape the bricks clean every time when I pull the coals forward....?? You must have a different rake to pull the coals forward. Mine is the one I got with the furnace, it has a flat edge.

Well I religiously pull the coals to the front of the box when reloading, but I also religiously keep the area in front of the bottom front air supply clear. This probably doesn’t help the issue.
yep, same here.
 
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brenndatomu

Minister of Fire
Aug 21, 2013
4,079
NE Ohio
really? I scrape the bricks clean every time when I pull the coals forward....?? You must have a different rake to pull the coals forward. Mine is the one I got with the furnace, it has a flat edge.


yep, same here.
I have the factory rake, but mainly use my homemade one...it's a 1/3rd of an old garden rake welded on to a rebar handle...works really well...it doesn't clean the bricks bare though...fine with me
 
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sloeffle

Minister of Fire
Mar 1, 2012
553
Central Ohio
New vs old (only 2.5 months of use)
I have'd my furnace for 8 years and never replaced a brick. I burn some elm but not a lot. We burn mostly ash due to EAB. From looking at your picture it looks like your brick are lot more porous than what I have on my Caddy. I wonder if PSG is cheapening some things up on the Tundra line in order to meet a specific price point.
 
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laynes69

Minister of Fire
Oct 2, 2006
2,425
Ashland OH
I think the lightweight bricks are better for insulation and combustion in the firebox.
 
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brenndatomu

Minister of Fire
Aug 21, 2013
4,079
NE Ohio
I wonder if PSG is cheapening some things up on the Tundra line in order to meet a specific price point.
I don't think those are cheaper to buy...actually more.
I think the lightweight bricks are better for insulation and combustion in the firebox.
This...
 

laynes69

Minister of Fire
Oct 2, 2006
2,425
Ashland OH
For the consumer I think they are more expensive, but for a large company like SBI, I'm sure there's not a significant difference in cost. I heard in the past, they were used to help lower shipping costs of the units, considering it would add up significantly with multiple units. I've considered trying them if I ever found them cheap enough, but I would still use the dense bricks on the floor of the furnace since it's not exposed to the cooling of the blower.
 
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sloeffle

Minister of Fire
Mar 1, 2012
553
Central Ohio
I think this post from @FyreBug awhile ago in the link @JRHAWK9 posted supports my case about them cheapening up the bricks on the Tundra.

regular and light weight firebrick differences

Specifically the last sentence:

"Since we use both, we are well aware of the properties of either. We use the lightweight bricks for our 'value' brands and the heavier for our premier brands."
 
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