Worcester Bosch CDi, I, SBi Spark Electrodes 87161421000

Worcester Bosch 87161421000

For use with the following Worcester Bosch Boilers:

• Worcester SBI 15 NG System
• Worcester CDI 24 BSN NG Combi
• Worcester CDI 24 FSN NG Combi
• Worcester CDI 24 FSP LPG Combi
• Worcester CDI 24 OSN NG Combi
• Worcester CDI 24 OSP LPG Combi
•  Worcester 24I NG FSN Combi
• Worcester 24SBI NG FSN System Boiler
• Worcester CDI 26 FSN NG Condensing Combi
• Worcester CDI 26 LPG Condensing Combi
• Worcester CDI 28 LPG
• Worcester CDI 28 NG
• Worcester 28I NG FSN Combi
• Worcester CDI II 35 NG
• Worcester CDI II 35 LPG

Usually, there are two types of electrode, Ignition electrodes and flame sensing electrodes.

The Ignition electrode is responsible for making the spark that begins combustion.

The flame sensing electrodes are responsible for checking if there is a flame present in the burner.

This is an important task and if the flame is not detected the boiler knows to re-attempt ignition.