Fly Ash-An Insulator?

Kungur · Post by **Kungur** » Thu. Feb. 05, 2009 7:16 am

Does the build up of fly ash on the inside of a furnace,I have an Alaska 140, act as an insulator and decrease heat transfer? Planning on shutting it down Staurday to do some maintenace and wonder about cleaning the inside.

WNY · Post by **WNY** » Thu. Feb. 05, 2009 7:17 am

Yup to a certain extent, you should clean it out about once a month or so, depending on the ash content of your coal.

samhill · Post by **samhill** » Thu. Feb. 05, 2009 8:11 am

I have a DV & I can tell by feeling the temp difference between the top & bottom of the vent pipe when the ash is building up. Bottom cool & top hot, it`s time to clean out some fly-ash.