EPDM or Viton (FKM) kits are required for those specific media

Field-Proven Reliability: The robust electromechanical mechanism withstands wide temperature fluctuations

if the diagnostic confirms the control board is not processing the flame rectification signal

the 3-pole 30A design is capable of interrupting all three legs of a three-phase circuit for complete electrical isolation

Weil McLain 381-330-025 Control Module Els PW 17895 EPDM or Viton (FKM) kitsThe Weil McLain 381 330 025 Control Module is the designated OEM replacement for the obsolete 381 330 023, engineered specifically for high efficiency hydronic systems. This integrated boiler control (IBC) manages critical sequencing for gas fired units, including the Weil McLain GV90+ series. Operating on 24VAC control voltage and 120VAC line voltage, this module regulates the igniter, inducer motor, gas valve, and circulator pumps. It features