

DOMUSA SIRENA EXPANSION VESSEL 8 LITRES 1/2 ( FD30) CFOV000025
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DOMUSA SIRENA EXPANSION VESSEL 8 LITRES 1/2 ( FD30) CFOV000025
The expansion vessel is a component that regulates the pressure of hot water inside the boiler. Its main function is to absorb the increase in water volume, preventing overpressure and damage to the heating system.
With the boiler turned off, check the pressure using a pressure gauge. If it’s outside the range recommended by the manufacturer (usually between 1 and 1.5 bar), there may be a problem. You can also press the air valve: if water comes out instead of air, the vessel is broken (only air should escape).
Los síntomas más comunes de un vaso de expansión defectuoso son: subida de presión en caliente , agua saliendo por la válvula de seguridad y ruidos extraños provenientes de la caldera.