Temperature question related to stainless steel liners

[scuffletown]

We just installed a stainless steel liner in an outside chimney for a wood stove that is in our basement. I used an infrared temperature gauge to check the stove temps and the stove was running around 550 degrees. The pipe was running at 300+ degrees. After opening the damper and airvent to add wood, the temperature at the stove went up to 800 degrees and at the T and up to the damper was 750 degrees. Is this stove too hot? And mainly, will it damage the stainless steel liner? I got on the roof and looked down the liner and it seems to have changed shape somewhat since we installed it. It is a flexible, double ply, smooth wall liner. Everything is installed correctly. The stove is homemade (we've owned it over 20 years) with a 6" output, going to an elbow to pipe to elbow to pipe to thimble to liner.

 

[webbie]

These liners are tested for operation at double those temperatures - and for bursts up to 2000 plus degrees....

"Designed for normal, continuous operation at 1000° F flue gas
temperatures, DuraTech (example) is subjected to rigorous and stringent HT
requirements of the UL standard, including one hour at 1400° F,
plus three ten minute chimney fire tests at 2100° F. "

 

[STIHLY DAN]

Why where you adding wood to a 550* stove? Must of still had some good burn going.

 

[Nick Mystic]

The fact that the liner seemed to have changed shape must mean something, right? If you could post some photos you will probably get more accurate feedback. I recall someone posting a few months ago with a double wall liner that appeared to have melted on him and started to come apart. Like Stihly Dan said, adding wood to a stove burning at 550 F is usually not a good idea. There are several threads about over firing a stove from such practices. Good luck with your situation.

 

[scuffletown]

Whenever I wake up at night I always check wood stove. It was 1:30 am and 8 degrees when I went down to check it.. I had room for some wood so I added it. I was very surprised at the temperatures. Did not know that the stove burned that hot. This stove heats a 1400 square foot basement and when that gets warm it heats upstairs. We have a heat pump so when it gets cold we use wood stove and it's also backup for power outage.

 

[scuffletown]

The fact that the liner seemed to have changed shape must mean something, right? If you could post some photos you will probably get more accurate feedback. I recall someone posting a few months ago with a double wall liner that appeared to have melted on him and started to come apart. Like Stihly Dan said, adding wood to a stove burning at 550 F is usually not a good idea. There are several threads about over firing a stove from such practices. Good luck with your situation.

So I should be worried about what looks to be change in shape. I will try to get pic.

 

[scuffletown]

This is a couple of picture's of the liner. May have to much zoom in them.

 

[scuffletown]

This is a couple of picture's of the liner. May have to much zoom in them.

bump

 

[begreen]

Liner looks great. Don't add wood on a hot fire. It's asking for the stove to take off like you have been seeing. Let the fire burn down before reloading.

 

[Berner]

We just installed a stainless steel liner in an outside chimney for a wood stove that is in our basement. I used an infrared temperature gauge to check the stove temps and the stove was running around 550 degrees. The pipe was running at 300+ degrees. After opening the damper and airvent to add wood, the temperature at the stove went up to 800 degrees and at the T and up to the damper was 750 degrees. Is this stove too hot? And mainly, will it damage the stainless steel liner? I got on the roof and looked down the liner and it seems to have changed shape somewhat since we installed it. It is a flexible, double ply, smooth wall liner. Everything is installed correctly. The stove is homemade (we've owned it over 20 years) with a 6" output, going to an elbow to pipe to elbow to pipe to thimble to liner.

I find the IR gun is a pretty difficult way to get a consistent pipe temperature. I have a similar setup and if I move the gun a half inch it can change the reading by a lot. Did you find this the case with yours as well?

 

[scuffletown]

I find the IR gun is a pretty difficult way to get a consistent pipe temperature. I have a similar setup and if I move the gun a half inch it can change the reading by a lot. Did you find this the case with yours as well?

Yes I did find that the temperature was up and down as I moved the ir gun around. One thing I have not said and that is I did not leave it that hot. After I checked the temperature I turned the draft and damper back down which helped in reducing the temps. I learned a good lesson by joining this forum. Thanks