Description
The Fenwal 35‑725205‑521 is a durable 120 VAC microprocessor‑based Direct Spark Ignition (DSI) control module engineered for reliable ignition management in gas‑fired heating systems. Designed for use in furnaces, boilers, and other gas appliances, this ignition control board delivers consistent and safe spark sequencing, flame sensing, and reset logic to support efficient combustion and flame stability.
Key Features
- 120 VAC Direct Spark Ignition (DSI): Designed for gas‑fired systems requiring reliable ignition control.
- Three Ignition Attempts: Three tries before lockout improve start‑up success.
- 5‑Second Pre‑Purge: Clears combustible gases before ignition for safer combustion.
- 4‑Second Trial‑for‑Ignition (TFI): Controlled spark timing for consistent ignition.
- Potted Multi‑Pin Connector: Robust construction for durability in harsh operating conditions.
- Thermostat/Power‑Off Reset: Reset method that enhances safety and control.
