CHIMNEY TEMP OF A FACTORY CLASS "A" QUESTION

[fisherman]

What is the normal temp of a Class "A" chimney 2 pipes with the white mineral powder in between? Should I be able to touch the outside of the pipe or should it be luke warm? I read the temp with an infrared therm and it measures 165Deg F

Can anyone help?

 

[elkimmeg]

165 is fine range its ok

 

[KeithO]

Paint a spot with flat black stove paint (the finish is normally shiny stainless steel). You will get a more accurate reading off of this spot than off of the stainless steel. Else use a contact thermometer. In a typical install with about 6' of stove pipe prior to the class A, I have been able to touch the class A without being burnt. Is the run of stovepipe is much shorter, then the first section of Class A will be hotter.

 

[webbie]

We had an earlier post about this - the allowed temps are VASTLY hotter than what you are measuring, like up at 400 degrees or more! This is because it is usually 2" from a combustible, so the combustible never gets very hot. Just for a rule of thumb, the wood around such a pipe should not exceed around 170, a temp I'm sure it never gets NEAR.