barnartist said:Thanks for the update Shannon. I'd like to get to where you are, but like you said it is a border line addiction to mess with these boilers.
Today I cleaned out my exchanger tubes (I have the old model that does not include the exterior cleanout arm) and my stack dropped about 100F at normal operating, so I must be making a better air to water echange back there. I was lazy this year to get back there, so I should try and clean out more often.
My boiler was down this summer for a cleaning and I have the 40 Super with the cleaners in the tubes. The cleaners are 1 1/4" twisted flat stock steel and the tubes are 1 1/2" diameter. Theoretically that leaves and 1/8" crud on the inside all the way around in each tube. My temp transfer was great for about a week and then dropped down to really nice and has stayed there since. I really need some 1 7/16" or 1 3/8" twisted flat stock to keep the tubes good and clean with out having to take things apart since I have a lot of idle time and will have until I can get my storage up and running. I wonder how much the crud in the tubes effects the "ideal burn" we are all wanting to have????
Any way my point is the built in tube cleaner is really nice but I still have to clean my tubes too and I'm thinking all the time all of us has spent burning with less than the peak fire has left a lot more tubes cruddy than we would like to think. :cheese: