The fan is the component that pushes 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 parameters in place to make sure no gas can be passed through to the main burner if the fan is not operational .
Comes on a Large Rectangular Mounting Plate
Circular Outlet
Technical specification
Toilet Cistern CapacityFTW--Supplier Part Number988418Brand NameHalstead