Description
The Fenwal 35‑673915‑553 is a professional‑grade 24 VAC proven hot surface ignition control module engineered for commercial and industrial gas‑fired heating systems. This microprocessor‑based ignition control board precisely manages hot surface ignition sequencing, purge timing, flame sensing, and safety monitoring for large combustion appliances — especially those exceeding 400,000 BTU.
Key Features
- Microprocessor‑based hot surface ignition control for precise sequencing and dependable starts.
- 24 VAC operation with integrated combustion blower relay.
- Pre‑purge, inter‑purge, post‑purge, and multiple ignition trials for safe, efficient combustion.
- LED diagnostics and test pins to assist with service and troubleshooting.
- Pressure switch and flame sense monitoring for enhanced system safety.
- Suitable for commercial boilers, furnaces, rooftop units, and high‑BTU gas appliances.
