As you may have seen I have an Alaska TriBurner in the cellar. It currently has the combined combustion fan and stoker motor, I run it full speed all of the time and control the burn rate by adjusting the carpet travel. I will be adding a separate combustion fan soon and I will adjust the carpet to the travel distance for a full fire and use the rheostat to control the carpet speed to regulate the burn rate.
The convection fan outlets on the stove are covered and I have a 6" duct running into the hot air furnace plenum with a temperature sensing switch to cycle the oil furnace blower. The convection fan is on a separate rheostat, when heat is needed I set it at full speed (where it usually stays during cold weather).
Here's the question: The stove has a stainless steel loop in it for heating domestic hot water. I plan to plumb it into the oil fired 30 gal. water heater using a circulator pump. I'm working on a suitable control circuit that will run the pump only when the water temperature drops below the set point on the aquastat. That shouldn't be hard to design, but I need a way to control the burn rate on the stove, esp. during warm weather when heat is not needed. I need a control that can idle the fire to a minimum and ramp it up fast when there is a call for hot water. Can the Coal-Trol do this?
I also would like a control that can regulate the burn rate for heating as well during cold weather.
Right now I'm adjusting the carpet travel according to how much heat is required, this will never work in July and wastes coal as well.
Also, the aquastat on the water heater and oil burner will remain operational for high demand, I'm incorporating a separate aquastat to control the coal heating.