Worcester Bosch Condensate Siphon Greenstar 87161066100

The Worcester Bosch 87161066100 is a condensate siphon assembly for Greenstar gas boilers. It sits in the condensate path from the heat exchanger and holds a water seal, so condensate can drain away while flue gases are kept inside the combustion circuit. Worcester Bosch builds it as a serviceable item, which means it can be removed and replaced when the trap becomes blocked, cracked or scaled.

• Water collecting beneath the boiler or around the condensate pipework
• Gurgling or bubbling noises from the condensate trap while the boiler runs
• Boiler locking out or failing to ignite because condensate is backing up
• Visible cracks, splits or heavy scale on the siphon body
• A dry trap that no longer holds its water seal

• Check the GC number and appliance serial plate against the compatibility list before ordering, as the same boiler range can use different condensate assemblies.
• Confirm the number on the existing part matches 87161066100, or one of the alternative numbers 1014995 and WB87161066100.
• Inspect the seals and gaskets around the trap while the siphon is off the appliance and renew them if they are perished.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.