The unit features permanent memory

Always verify the full model and serial number

accurate field calibration using the included washer-type weights

000 AFC (Available Fault Current) rating and is manufactured without PCBs

Always match the pick-up and drop-out voltage specifications of your existing relay

Fenwal 35-655800-003 Control 322057-301 The unit features permanent memoryThe Fenwal 35 655800 003 is a microprocessor based 24V hot surface ignition (HSI) control designed for precise burner sequencing in gas fired heating applications. Engineered for reliability in furnaces, boilers, and commercial water heaters, this ignition control module manages the 1 trial ignition sequence with high level diagnostic support. Operating on a 24VAC power supply, the unit provides a stable 7 second trial for ignition (TFI) period,