The Sime part is located around the fan section .The fan is the mechanism that pushes fresh air into the combustion chamber, allowing the gas to be burnt correctly. It also removes the combusted 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 working correctly.
Fits multiple appliances
Technical specification
Waist Sizeac39ci19guERP RatingNot ApplicableSupplier Part Number6229212Brand NameSime