Flyer5 wrote:In the last 27 hrs I used about 70 lbs . It was 2 degrees this morning so I still think that is pretty good I want to let it go a few more days without the secondary combustion blower . Then I will try it when it is hooked back up and see if it uses less coal . Dave
I am using a KA-6 to heat about 1200 square feet of drafty old uninsulated farm house with old windows and the boiler sits in the basement and helps to heat that space. The past couple of days with the wind and cold she burned about 80 lbs a day. I think your 70 lbs is pretty good.
I added the second fan also. This is a must for summer operation but I see only minimal difference for winter use. I do leave it run all the time. Keystoker believes it helps bring the fire up a bit faster during a call for heat.
You mention overshooting the high limit. I wander if this is why they quit making the KA-4. It seems to be the same stoker as used by the KA-6 in a smaller boiler. The larger volume of the KA-6 would not overheat as quick would be my guess.