What is a low water cut out?

A) it is an operating control that shuts off the boiler at the end of every operating cycle when it senses that the boiler has used up its supply of water
B) it is a safety device that shuts off the boiler if the water level is low
C) it is an operating control that energizes the water fill solenoid at the end of an automatic blow-down cycle
D) it is a hand valve installed near the bottom of the boiler that is used for filling and servicing the boiler


B

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