Description
The Fenwal 35-605903-223 is a high-quality 24 VAC microprocessor-based Direct Spark Ignition (DSI) control module designed for gas-fired heating systems including furnaces, boilers, heaters, and other HVAC equipment. It provides precise ignition sequencing, flame sensing, and safety timing to ensure efficient and dependable combustion performance.
Key Features
- 24 VAC Direct Spark Ignition Control with microprocessor-based timing for reliable start-up and operation.
- Typical configuration includes 30-second pre-purge, 30-second inter-purge, and 7-second trial-for-ignition (TFI) sequences to ensure safe combustion conditions.
- Designed for natural gas, propane (LP), or manufactured gas applications.
- Compatible with a range of HVAC and furnace models, especially Lennox systems.
- Durable construction with conformal coating and robust components for long-lasting performance.
