DE DIETRICH CBB - Manual (Page 6)

6
CBB 15/09/2008 - 300008541-001-E
3. Description
3.2 Safety
- Safety battery (delivered from the factory) to be connected to the
cold water by means of a control valve (option L33)
- Safety valve (To be installed by the fitter)
Motorised mixing valve
Adapts the outlet temperature from the boiler to the radiators in such a way as to
obtain the desired room temperature, whatever the outside temperature. This is done
by mixing the outlet water with the colder heating return water.
Pressure gauge Indicates the pressure in the heating circuit.
Air vent Ensures that there is no air in the heating pipes.
Safety valve Prevents too great an increase in pressure in the installation.
Expansion vessel
Maintains a constant pressure in the installation and absorbs the water caused by
expansion.
L33
Safety exchanger control valve
Use to trigger the safety battery which protects the boiler against overheating.
Désignation Fonction