Baxi Twin Pipe Adapter 80/80 S100250

The Baxi S100250 is an 80/80 twin pipe adapter, listed by the manufacturer as a flue adapter. It forms the junction between the appliance flue outlet and the twin 80mm flue pipe runs used on this appliance family, keeping the air intake and flue gas paths correctly separated and sealed.

It is a Baxi-branded component carrying the manufacturer code S100250, and it is used on Broag Commercial equipment. The adapter is a serviceable part, so it can be renewed on its own when the existing connection is damaged, distorted or no longer sealing properly.

• Visible cracking, distortion or corrosion at the adapter body or its pipe sockets
• Flue gas readings drifting outside the expected range for the appliance, or combustion analysis that cannot be set correctly
• Soot staining, condensate tracking or damp marks around the flue connection point
• The twin pipe runs no longer sitting square or sealing at the appliance outlet
• Repeated lockouts or flame-failure faults traced to the flue path during servicing

• Confirm the appliance model and serial number against the compatibility list before ordering, as flue components vary between appliance variants.
• Check the part number on the existing adapter, or the number quoted in the appliance's parts list, and match it to S100250.
• Inspect the flue seals and gaskets at the same time; renew them if they are compressed, perished or contaminated.
• Work on flue components that form part of the combustion circuit should be carried out by a competent, registered engineer.