CoalBurner5 wrote:Just curious what "problems" might occur if i decide to lower temp.
Also if you could give me a name of a good mixing valve to use that would be awesome.
The acidic gasses given off by burning coal condense to a liquid at somewhere around 145 degrees, and this liquid (moisture) will rot out the flue and eventually the boiler itself.
Taco makes nice mixing valves. So does Honeywell.