Riello Ionization monitoring electrode 3012178

The Riello ionization monitoring electrode 3012178 is a replacement part for Riello burners, designed to monitor the flame by conducting a small rectified current through it. It has a length of 552 mm and is resistant to soot. The electrode features a ceramic insulator that is prone to cracking. It fits specific Riello burner models including RS 70, RS 70/M, RS 100, RS 100/M, RS 160/M BLU, RS 190, RS 190/M, RS 250/M MZ.

When selecting a replacement electrode of this type, key parameters include electrode length and bend, insulator diameter, spark gap (for ignition electrodes), mounting flange configuration, and the burner series for which the electrode was shaped. The electrode rod and ceramic insulator are typically shaped to fit a specific blast tube or combustion head geometry. Before ordering, compare the original electrode's geometry and ensure the ceramic insulator is clean and free of cracks. The burner's control box may require a compatibility check if the electrode type differs from the original.

Common failure modes for ionization and ignition electrodes include erosion of the electrode tip, cracking of the ceramic insulator (often from thermal shock or overtightening), sooting from incomplete combustion, and a drifting gap that lengthens ignition time or causes intermittent flame loss. When an electrode fails, the burner may experience ignition problems or flame loss, and the control box may lock out. Check the electrode for visible damage, soot buildup, and correct gap setting.