Manual head

The radiator is a heating device that can either be an electric radiator (like an electric towel warmer, for example) or a water radiator.
In the case of the water radiator, heating water circulates through it thanks to a closed circuit. This water passes through the boiler and absorbs heat generated by the combustion of gas from the gas block into the heating body.
Domestic hot water, on the other hand, takes heat from the heating water through a sanitary exchanger, generally a 20-plate exchanger.
Each radiator includes a thermostatic or manual head allowing you to choose the temperature in the house. The manual valve for radiator does not take into account the ambient temperature; it only delivers heat according to the valve opening.
When you have an ambient thermostat, turn off each manual head to ensure that the thermostatic regulation at the thermostat itself can operate correctly.