Do I have a problem?

[amsoil dealer]

I have an old Heatmor 200. Fired it up the other day and everything is working fine. I went to put new stove pipe on and noticed that the roof was pretty warm. I figured I was losing a lot of heat through the roof. Had the wife grab 2 rolls of r30 insulation. I pulled the roof off and put 2 layers down on top of the current insulation inside. Topped off last night and went to bed. Checked the stove this morning (around 30 degrees) and hardly used any Wood.

Came home after work to cut wood and noticed some paint missing in spots on the stove. It out shouldn't have gotten too hot as I didn't burn much wood in those 11-12 hours.

Should I be concerned? Did the added insulation cause the stove to get too hot? The only thing I can think of is the hot spots are about the same height as the water level when I drop the dip stick in to the water level.

Let me know your thoughts. Easy enough to pull a layer of insulation out. The plus side is very minimal wood usage so far.

 

[amsoil dealer]

I will add that I touched those spots right when the fan kicked off and they were cold.

 

[maple1]

Only way I can see that paint doing that from your fire, is if the fire is right against the other side of the metal. Is your water level still OK? I would think the most heat that metal would see, is from some steam escaping - which shouldn't mess up any paint I've ever used, I don't think. That's only boiler water temp.

 

[amsoil dealer]

I was questioning how it could even happen. I would think that if there was a fire against the walls that there would have been a lot more paint missing. I checked the water level and it is actually higher on the dipstick than normal. I am so confused.

here is what changed recently. Added the insulation, went from a 2' to 4' smoke stack.

 

[Fred61]

Not knowing the design and construction of these rigs, One question. What is behind those burn patches, Water jacket or steel fire box?

 

[amsoil dealer]

Directly behind the burn marks are a layer of insulation. Under that is the water jacket

 

[Fred61]

Somewhere you have an immense amount of heat being dumped between the vessel and the skin, Adding insulation probably concentrated the heat to those spots and/or reduced the surface area that allowed it to cool to below "paint burning" temperatures.

Whatever the reason, it shouldn't be happening.

 

[maple1]

Is the entire boiler water jacketed? This seems way weird to me.

That paint isn't made from chocolate is it?

 

[amsoil dealer]

I was talking to a guy at work. He is thinking that there is a crack in the chimney stack underneath the roof and I was getting legit flames. Not sure if that is the case or not. I am hoping if it is cracked that I have enough material to weld to or I am probably in big trouble.

the only other possibility I can think of would be that when I shot the spray foam in around the fill port and the chimney stack that it got hot and ignited. I am kind of doubting that but who knows at this point.

going to take a quick peek when I get home and probably shut it down to be safe. I don't want to wreck anything. It's supplemental heat and we are currently fluctuating temps from 20-40 degrees outside so I think it will be ok for a bit.

 

[amsoil dealer]

I was also informed that adding the insulation should not cause an issue. The guy at work said his central boiler has about 3" of spray foam all the way around.

 

[3fordasho]

Pull covers and see what's going on. If you got spray foam too close to the chimney stack it may have ignited and burned it up. That's what it looks like anyway.

 

[amsoil dealer]

I'm hoping you are right. I clearly wasnt thinking as I shot it down around the chimney stack and around the top. I am planning on taking it apart tomorrow and setting what's going on. I touched the tin of one of the "hot spots" tonight and it was warm but by no means hot. That could just be a spot with minimal insulation.

 

[amsoil dealer]

Well in looking at this tonight I'm thinking it was the spray foam. I lost quite a bit of the old insulation due to the plastic melting into it. I pulled the insulation out and looked everything over. No visible cracks or holes. I fired the boiler back up and ran with the roof off until it got up to temp and idled. I see no issues. Threw what was left of the insulation back in and laid the roof back on. Going to pick up more r30 and replace what is bad. Thought about wrapping leather around the chimney portion that is under the roof. Hello hold the heat in and keep the insulation from getting too hot. Kind of paranoid now.

 

[Fred61]

Leather?

 

[amsoil dealer]

my thought was an old welding jacket or something of the like. Do they make an insulation that you can wrap around the portion of the chimney pipe that is under the roof? or would standard unfaced fiberglass insulation work? I don't know a ton about these things.

 

[maple1]

Roxul

 

[warno]

Did you spray foam insulation in on top of your current insulation?