The fan is the component that injects fresh air in to the combustion chamber, allowing the gas to be burnt correctly. It also forces out the toxic gas after the combustion process is complete. The boiler has safety protocols in place to make sure no gas
Fits multiple appliances
Technical specification
Waist Sizeaa52cc14fxToilet Cistern CapacityFTW--ERP RatingNot ApplicableSupplier Part Number3525223Brand NameReznor