Description
The Fenwal 35‑725205‑021 is a professional‑grade microprocessor‑based direct spark ignition (DSI) control module designed for safe, reliable control of gas burners in a wide range of HVAC and industrial applications. It operates on 120 VAC and provides precise ignition timing and robust flame sensing to help ensure dependable start‑up and combustion performance in furnaces, heaters, boilers, commercial cooking equipment, and infrared heating systems.
Key Features
- 120 VAC Direct Spark Ignition Control: Microprocessor‑based timing for consistent ignition performance.
- Three Ignition Trials: Multiple attempts before lockout to increase reliability.
- 4‑Second Trial‑for‑Ignition (TFI): Ensures a strong spark initiation.
- 15‑Second Inter‑Purge Interval: Clears combustion chamber gases between ignition attempts.
- Potted Module with Multi‑Pin Connector: Enhanced durability against vibration and moisture.
- Compatible Fuel Types: Works with natural gas, LP (propane), and manufactured gases.
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