1.http://www.alternateheatingsystems.com/ ... tandem.htm
Is this considered parrell or in series?\\
If I run it parrell how do I control the boilers so the coal is heating the houes and if need be the oil would kick on automaticaly?
Same goes for the series.
It seems that the only disadvantage to the parrell would be intial cost.
I may use the coal boiler all year, I have a indierct hot water heater, both my coal and oil boiler have coils the coal boiler one I will take out prioir to useing the boiler, the oil one I left in just not useing it.
I want my oil boiler to work normal if I go away for a week or so, or if I can't get coal I would rather spend a little more now and have a smooth runing easy to operate efficent system. Thanks