it prevents heat exchanger damage and hazardous conditions by interrupting the burner circuit if the plenum temperature exceeds specified tolerances

Stable Flame Signal: Enhanced sensor probe provides consistent microamp feedback to the ignition control

While temporary cleaning with light abrasive material can restore contact

which is the industry standard for industrial solenoid valves

Proper field installation requires shielded wiring separated from high-voltage lines to prevent signal interference and ensure accurate thermal regulation in demanding industrial or commercial heating processes

Fenwal 35-605601-201 Control Refrigerant it prevents heat exchanger damageThe Fenwal 35 605601 201 is a high performance 24V Direct Spark Ignition (DSI) control module engineered for precise burner sequencing in gas fired heating systems. This microprocessor based unit utilizes standard 24 VAC input and features a fixed 30 second pre purge period followed by a 4 second trial for ignition (TFI) to ensure safe and efficient combustion. Designed for reliability in the field, it includes on board LED diagnostics for rapid