Whooooo there Kungur. Slow down.... No need to dig out manual. The Kaa-2 runs just the opposite on timer pins. I don't think it was engineered to be run the opposite of other stoker boilers but, that's how it needs to be run. The Kaa-2 needs a hotter fire (more pins) for quicker recovery, due to it's smaller 24 gallon water capacity. You're not wasteing coal during no call for heat, as the heat is being stored in the water. Unless the space to be heated is really really small, and well insulated, the Kaa-2 needs to be run on the timer during the cold months. This time of year, I'm running 3 groupes of 5 pins, and 3-3/4 turns counter clockwise on the stoker ajustment. Water capacity is why I think KEYSTOKER should have NOT done away with the Ka-4. Instead, they done away with Ka-4, and come out with the smaller Kaa-2 to take it's place. Oliver PS: By the way Wiz, Very Nice!Kungur wrote:I was wondering if this would also apply to my KAA-2? One thing I think maybe I am messing up with is the # of pins for the Heating Season. I have added pins since Summer. Now I need to dig out the manual and see where I went wrong!