Push button, switch

Both gas boilers and oil boilers contain numerous heating spare parts that work in relation to each other. There are parts for heating (heat exchanger, burner, or ignition electrode), others for hydraulics (3-way valve or boiler hydraulic block), and others for fuel (oil burner, oil pump, or gas block).
In any case, whether we talk about the sanitary exchanger, heating exchanger, or even the gas valve, all these heating spare parts only function after the boiler has started. For this, a button is placed on the boiler dashboard. Other buttons considered as heating spare parts allow you to reset the boiler or turn it off (via a push button for a Frisquet boiler, for example). Other buttons or switches allow you to vary the water pressure or lower the water heater temperature.