My home heating boiler has a 200 degree
Dump switch that turns on my basement heat. (Forced hotwater baseboard).
The sensor switch is about 8" right of the gauge. It's set for 190 these days.
It only clicked on once. I was burning coal and something cause the air-intake to stick in the open posistion.
It was about 2AM and the basement got up to about 90 degrees and the boiler was boiling!!
Scary high pressure too, since the T&P failed to work. I had to release
the pressure by hand. Live steam is very dangerous..
It's a good thing my old monster is made out of steel and not cast iron.. Or else, it could have popped..
