Electrodes for Clean Burn waste oil furnaces Single Piece Electrode part # 33183. This electrode can be used on Clean Burn burners in the CB 500 series including: CB 500, CB 525, CB 525 S, CB 525 S2, CB 550, CB 550 S2, CB 551 H3 and CB 551 H5. It is also used on the Saturn CB 100 or A2 burners.