Worcester Bosch Condensate Syphon Greenstar 87107254480

The Worcester Bosch condensate syphon, part number 87107254480, is a condensate assembly used across the Greenstar range of gas boilers. It sits on the condensate route from the heat exchanger, collecting the acidic water produced during combustion and discharging it in controlled amounts to the drain. The water held inside the syphon body forms a seal that keeps flue gases within the appliance rather than allowing them to pass back through the condensate pipework.

Because the syphon handles warm condensate continuously, its body and internal passages are a common point for scale build-up, debris and cracking over the service life of the boiler.

• Water pooling or dripping beneath the boiler casing
• Condensate overflowing from the syphon or trap area
• Gurgling, bubbling or draining noises from the condensate route
• Boiler locking out or showing a condensate-related fault code
• Cracks, heavy scale or debris visible in the syphon body

• Check the GC number on the appliance data badge against the compatibility list before ordering.
• The alternative number 1012481 may be marked on the existing part, so compare it with the unit being replaced.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.