Description
The Fenwal 35‑679655‑551 Ignition Control is a heavy‑duty microprocessor‑based hot surface ignition (HSI) control module designed for commercial and industrial gas‑fired heating systems. This advanced control board is ideal for large‑capacity burners and high‑BTU applications, providing precise ignition sequencing, reliable flame sensing, and robust safety monitoring to ensure efficient and safe operation of furnaces, boilers, rooftop HVAC units, and other gas‑fired equipment.
Key Features
- Microprocessor‑controlled hot surface ignition (HSI) sequencing for consistent starts and flame verification.
- 24 VAC input with integrated combustion blower relay and safety logic.
- Local reset and CSD‑1 compliance, meeting industry safety standards for commercial systems.
- Pre‑purge, inter‑purge, and post‑purge timing for safe ignition and shutdown processes.
- Continuous monitoring of pressure switch, thermostat, and flame status for enhanced safety.
- On‑board diagnostics with LED indicators to assist with service and troubleshooting.
