Worcester Bosch Burner Nozzle 12-9 LPG 8716117256

This is a Worcester Bosch burner nozzle, supplied as part number 8716117256 and sized 12-9 for liquefied petroleum gas. It sits in the burner assembly of the appliance, where it meters and shapes the gas flow so the mixture burns cleanly at the correct rate. The nozzle is specific to the LPG variants of the Worcester Bosch Greenstar i ErP System range.

• Yellow or lazy flame at the burner instead of a crisp blue flame
• Soot deposits around the burner or on the heat exchanger
• Rising carbon monoxide readings or a combustion analyser reading outside the expected range
• Boiler locking out or failing to establish a stable flame on start-up
• Uneven or reduced heat output despite correct gas supply pressure

• Check the GC number on the appliance data badge against the compatibility list, as the LPG and natural gas versions of these boilers use different nozzles.
• Confirm the nozzle size 12-9 matches the appliance and fuel type before fitting.
• Have the burner seal or gasket condition checked at the same time, as the burner will need to be disturbed to reach the nozzle.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.