Stove top temperature-what to shoot for?

[velvetfoot]

I'm rigging up something to turn my insert fan to high when stop top reaches a certain temperature. (My stove has been tending to run hot, I believe).

What temperature should I shoot for? 500? 600?

I haven't started it up yet with this setup, but will soon. Not even sure effect fan on high will have.

Only thing manual says is to not let the stove top glow.

Thanks.

 

[begreen]

More like 700º

 

[velvetfoot]

More like 700º

Stove top?

 

[Woody5506]

mine likes to stay around 600-700.

 

[begreen]

Stove top?

Are you talking about putting a sensor on the actual stove top (firebox top) or on top of the convective jacket? Assuming the actual stove top and that the blower is already running on a lower speed and that the goal is for the fan to only switch to high speed when the stove top is getting very hot, then 700-750º would be a good engagement temperature.

 

[velvetfoot]

Alas, I think I located the sensor too far forward on the stove top. It seems to be cooler there. I couldn't realistically put it back any farther because it's an insert. Maybe I could, but it'd be harder, and I'd have to scrape the cement off the sensor to relocate, etc.

I might buy another sensor and try to locate in a new place.

Where is the best place-close to the flue exit?

 

[begreen]

I think that is on the convective top. If so the temp there is going to be lower. Is there an air gap between that surface and the actual stove top? The Hampton is challenging because of design. I think the convective slots where the heat comes out are notched into the door. If that is correct I'm not sure if the gap is large enough to route the wire above the door and to the actual stove top. Can you post a shot of the door closed and then open?

 

[velvetfoot]

No, that is not the convective top. The decorative cast shelf has been temporarily removed. That is the top that I've seen glow.

Now, where is the best place-close to the flue exit?

 

[begreen]

That may be as close as you can get without pulling the cast iron surround. If it was glowing at that location the temperature there was over 850º.

 

[velvetfoot]

It was glowing closer to the flue exit. There's about .5-.75" clearance. I might be able to do it. A horizontal magnet mount would be nice.

So, what do you think? If there was no constrain on access, like, it was a free standing stove, what would be the best location for the representative temperatures you've noted?

 

[velvetfoot]

I ordered a $6 General alnico 1/2" dia button magnet off eBay. I'll try to reuse the thermocouple. Alnico magnets are supposed to be heat resistant, as per the Raspberry Pi guy.

 

[begreen]

It was glowing closer to the flue exit. There's about .5-.75" clearance. I might be able to do it. A horizontal magnet mount would be nice.

So, what do you think? If there was no constrain on access, like, it was a free standing stove, what would be the best location for the representative temperatures you've noted?

Typically temp is measured about 3-6" in front and to the left or right of flue exit.

 

[velvetfoot]

Typically temp is measured about 3-6" in front and to the left or right of flue exit.

I don't quite understand:
It'd be 3-6" in front of the flue exit AND x" to the left or right?
With the magnet concept, I'd be able to move it around.

 

[begreen]

AND x" to the left or right

On our stove it's about 6" to the left, but stoves vary.

 

[velvetfoot]

OK, thanks.

 

[velvetfoot]

I removed the thermocouple and its stove cement adhesive (easy) and relocated it to about 6" in front of the flue exit with a ferrite magnet that I'm sure will fail shortly, but until I get the new alnico.

I think it might have peaked at 866F with the air closed off (as much as it can on this thing, lol), and the fan on high isn't bringing it down. The secondaries are flaming like a ba$tard up on top of the pile of wood in the stove. The stove wasn't packed as much as it could have been. Dry wood, 24F, tall chimney.

Seems to be dropping now.

I'm not happy that the secondary air can't be turned down.