Thermostat

When we talk about a thermostat, we refer to the regulation thermostat for heating (connected to the boiler) and the internal regulation within the boiler.
The room thermostat is a thermal regulation device that allows heating a house or apartment moderately without overheating in relation to the outside.
In the boiler itself, heating regulation prevents a detachable part from needing to be quickly replaced by another heating spare part due to a malfunction or overheating. This part is called the klixon or the ctn (or even ntc).
The term klixon for a boiler can refer to the overheating probe (also called thermistor for the boiler), sanitary ntc, or the heating ctn. This boiler spare part is important for protecting the boiler from insecurity.