I have an Osburn 2400i and was wondering what purpose the mineral wool that sits on top of the upper level of firebricks serves. Also how often does it need to be replaced? Thanks for the help.
Question about mineral wool
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If its not disturbed and torn up, it should not need replacing. Its function is for insulation for the firebox, it helps the stove burn hotter, and is directly related to the grams per hour of emmissions rating your stove has.
Some earlier stoves had a problem - if the draft was too strong, it could suck this wool into the flue collar and, of course, the stove would stop working correctly. Most stoves have some kind of a weight or frame that holds it in place. As long as it is sitting there and not blocking the flue, it is helping to clean the air by the method MSG mentions (hot fires consume more of their own pollution).
Webmaster said:
This is something to watch out for, we have had it happen recently. Our customer put a small piece of stainless on top of the blanket to keep it down. Alot of manufactures are going to a schmolle board, it looks like pressed vermiculite. The function is the same, even better yet, some are using schmolle and the wool blanket. So far the overdraft situation has not been a problem, but in rare cases it can be.
MSG:
"This is something to watch out for, we have had it happen recently. Our customer put a small piece of stainless on top of the blanket to keep it down. Alot of manufactures are going to a schmolle board, it looks like pressed vermiculite. The function is the same, even better yet, some are using schmolle and the wool blanket. So far the overdraft situation has not been a problem, but in rare cases it can be."
Thanks a lot UL!
"This is something to watch out for, we have had it happen recently. Our customer put a small piece of stainless on top of the blanket to keep it down. Alot of manufactures are going to a schmolle board, it looks like pressed vermiculite. The function is the same, even better yet, some are using schmolle and the wool blanket. So far the overdraft situation has not been a problem, but in rare cases it can be."
Thanks a lot UL!
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