Description
The Fenwal 35‑605601‑201 is a 24 VAC Direct Spark Ignition (DSI) control module engineered for dependable and precise ignition performance in gas‑fired heating systems, HVAC equipment, and industrial appliances. This microprocessor‑based ignition control delivers consistent timing and advanced safety sequencing for reliable burner start‑up and operation. Designed with a 30‑second pre‑purge period and a 4‑second trial‑for‑ignition (TFI) cycle, the 35‑605601‑201 ensures thorough combustion preparation and secure spark delivery, helping to improve ignition repeatability and system safety. Its rugged design and diagnostic capabilities make it ideal for replacing factory OEM modules or upgrading older control systems.
Key Features
- Direct Spark Ignition Control: Operates on 24 VAC for efficient ignition control.
- Microprocessor‑Based Sequencing: Provides precise and repeatable ignition and purge timing.
- 30‑Second Pre‑Purge: Adequate pre‑purge phase to clear combustion chamber before ignition.
- 4‑Second TFI: Trial‑for‑ignition timing optimized for reliable flame establishment.
- Diagnostic Feedback: On‑board diagnostic features assist with troubleshooting and maintenance.
- Remote Flame Sensing: Supports remote flame detection for flexible installation.






