The Vaillant adaptor is located around the flue section. The flue is a vent which facilitates the safe expulsion of steam and combusted gases resulting from the boiler's normal operation. There are various models of flue which are dependent on the appliance's location.
Fits a number of Vaillant boilers
Technical specification
TypeFlue AdaptorRange DescriptionFlueManufacturer Model No0020144596Brand NameVaillant