ACV Electrode 537DZ007

The ACV Electrode 537DZ007 is a straight (unbent) electrode with a length of 164 mm, designed for use in ACV boilers. It serves as an ignition or ionization electrode, delivering a spark to ignite fuel or proving flame presence by conducting a small rectified current. This electrode is compatible with ACV A22, Prestige 50 MK2, Prestige 75 MK2, HeatMaster 71, and HeatMaster 101 models. It is a consumable part that operates in the flame zone and degrades over time.

When selecting a replacement electrode of this type, key parameters include overall length, presence and angle of any bend, diameter of the ceramic insulator, spark gap at the tip, design of the mounting flange or bracket, and the specific burner series for which the electrode was originally shaped. Always verify that the replacement matches the original in all mechanical dimensions and mounting arrangement to ensure proper fit and flame sensing.

Common failure modes for electrodes in this class include erosion of the metal tip, cracking of the ceramic insulation, surface sooting that impairs conductivity or insulation, and a gradual widening of the spark gap that delays ignition or causes misfire. In systems with a pilot burner, the electrode must be positioned correctly within the pilot flame to ensure proper ignition and flame signal.