Vaillant is located around the fan section. The fan is the device that pushes fresh air into the combustion chamber, allowing the gas to be burned correctly. It also removes the remaining burnt 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 has ceased functioning.
Fits multiple appliances
Technical specification
Waist Sizeac77ci12gxCompatible WithVaillant Thermocompact VC 112 E (88-98), Vaillant Thermocopact VC 142 E (88-98), Vaillant VC 112 E (1988-1998) and Vaillant VC 142 E (1988-1998)Supplier Part Number190123Brand NameVaillant