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The wires are those that go to the thermostat in the boiler room. I dont' have a multimeter. What's a good one to get? The tech was from an oil delivery and boiler maintenance company.

Hello, Yes there is an aquastat and it is used for hot water during the summer as well. What would cause it to reach the aquastat temperature but keep going and produce steam? Can aquastats go bad? I've had 2 guys over (from the same company) and neither mentioned what you did. The water...

Hello, I'm having a problem with my oil boiler. Upon returning from vacation recently I came home to the water being completely drained out of the valve. Upon refilling it as my system is manual fill, the boiler started and the heat came on. The thermostat is an automatic timing one where I had...