Fenwal 35-630501-001 Control

The Fenwal 35-630501-001 is a robust 24VAC Intermittent Pilot (IP) ignition control designed for precise burner management in commercial and residential gas-fired equipment. This microprocessor-based control features a 15-second Trial for Ignition (TFI) period, ensuring safe and reliable direct main burner ignition. Engineered for remote flame sensing, it utilizes a dedicated sense probe to monitor ionization, providing superior safety during intermittent pilot sequences. This module is a direct replacement for various HVAC pilot ignition systems, offering high-voltage spark generation and internal surge protection to withstand harsh boiler room environments. The non-volatile lockout mechanism requires a manual power reset to ensure system integrity after a failure. Its compact footprint and standardized wiring terminals simplify field integration, making it a reliable choice for gas furnace repair and boiler control upgrades where precise timing and flame monitoring are critical.

• 15-Second TFI: Provides an optimized window for pilot flame establishment before safety lockout.
• Remote Sense Capability: Decouples the ignition and sensing functions for improved flame signal stability.
• Microprocessor Control: Delivers precise ignition timing and consistent sequence logic over the life of the unit.
• Rugged Design: Built to handle the electrical noise and thermal stress common in HVACR applications.
• 24V IP Module: Standardized voltage for broad compatibility with existing 24VAC HVAC control circuits.

Can I use this module to replace a local sense ignition control?
This specific model is designed for remote flame sensing. It requires a separate flame probe rather than sensing through the ignition electrode. Always verify the wiring schematic of the existing appliance before installation.

What causes this control to go into lockout?
Lockout typically occurs if the flame ionization signal is not detected within the 15-second TFI window. Common culprits include a dirty flame sensor, improper grounding, or a clogged pilot orifice.

Is this unit compatible with both Natural Gas and LP applications?
Yes, the Fenwal 35-630501-001 is designed for use with both gas types, provided the pilot burner and gas valve are correctly configured for the specific fuel source.

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.