Fenwal 35-755216-013 Control

The Fenwal 35-755216-013 is a microprocessor-based 120V HSI ignition control engineered for high-demand gas-fired applications, including commercial cookers, construction heaters, and tube heaters under 400K BTU. This potted ignition module features a rugged construction that provides critical protection against washdown and extreme vibration, ensuring long-term stability in harsh environments. Designed to manage 120 VAC hot surface ignitors up to 5 Amps, the 35-755216-013 utilizes precise timing sequences for ignition and purge cycles, effectively reducing system costs by consolidating multiple appliance functions into a single, reliable component.

This Fenwal furnace control board incorporates a safe start feature that verifies the absence of a flame before initiating the heating sequence. With a wide operating temperature range of -40°F to 176°F and flame rectification technology (1.0 mA minimum sensitivity), it maintains consistent performance across various fuel types, including Natural Gas, LP, and manufactured gas. The integration of multi-pin connectors allows for streamlined field installation and fast assembly for contractors handling high-volume repairs or OEM replacements.

• Potted Design: Superior resistance to moisture, washdown, and mechanical vibration.
• Safe Start Logic: Pre-ignition self-check prevents unsafe startups by confirming no flame is present.
• Extended Compatibility: Rated for 120V HSI systems and furnaces up to 400,000 BTU.
• Microprocessor Precision: Delivers repeatable, accurate timing for Trial for Ignition (TFI) and purge periods.
• Diagnostic Support: Integrated flame current test pins allow for immediate service measurements.

Common Questions

Is the Fenwal 35-755216-013 compatible with 24V systems?
No, this specific model is designed strictly for 120 VAC input and output. Installing this on a 24V circuit will result in control failure.

What does the "potted" designation mean for this control?
The internal electronics are encased in a protective resin. This is essential for equipment exposed to heavy vibration or environments requiring frequent cleaning/washdown.

Can this be used with a remote flame sensor?
Yes, the 35-75 series supports both local and remote flame sensing configurations to match your specific burner setup.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.