Boiler and water shut off if leak

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Netmouse

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Is the following true? If an indirect tank or the boiler itself has a leak, would the incoming water will be stopped by the boiler's low water cut off? So NO FLOODING?
 

JohnjH2o1

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Low water cut offs prevent the boiler from firing. They don't turn the water off.

John
 

Jadnashua

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And, if you have an auto-fill valve, and you don't close off the feed to it once the system is initially filled, if you had a leak, it would keep trying to keep the pressure up (i.e., filling) on the system.
 
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