Safety

For safety, the boiler includes many heating spare parts. For the heating part, the heating temperature probe ensures that the water heated by the calories from the heat source does not cause the boiler to overheat.
The thermistor is also a heating CTN that acts as an overheating probe.
For the sanitary part, the sanitary NTC works in the same way but to prevent the water arriving at each tap (mixer or single-lever) from being too hot or even scalding.
In a boiler, each part has a safety feature. This is also true for the gas valve of the boiler, which delivers fuel to the heating device. The gas is then ignited by the ignition electrode, and the ionization probe ensures that the gas flows only at the right time. Without it, the gas may leak from the device and endanger your safety.
The combustion gases from the heating exchanger and the boiler burner are then evacuated through the chimney or duct. A SPOTT safety probe can indicate if there are risks related to these burnt gases.