Worcester Bosch Blast Tube PL6/7/21.5/10 x 80mm 87161566970

The blast tube is a Worcester Bosch component that sits inside the combustion chamber of the appliance, directing the burner flame and shielding the ignition area from the worst of the heat and combustion gases. It is listed by the manufacturer under part number 87161566970 and carries the alternative number 1019655. The part is supplied in the PL6/7/21.5/10 x 80 mm format used on Danesmoor FS oil-fired boilers.

• The burner flame becomes unstable, lifts off or fails to establish reliably at start-up.
• Soot deposits or heavy discolouration appear around the burner head and combustion chamber.
• The tube is visibly distorted, cracked, corroded or eroded after long service.
• Combustion readings drift outside the expected range and cannot be corrected by adjustment alone.
• The tube no longer sits squarely in its location, allowing flame to spill away from the intended path.

• Confirm the boiler model and serial number against the compatibility list, as the blast tube is specific to the Danesmoor FS 18/25 OOO.
• Check the part number on the existing component or in the manufacturer's literature; 1019655 is the alternative number for the same item.
• Inspect the combustion chamber seals and gaskets while access is available, and renew them if they are disturbed during the repair.