Fenwal 35-705501-001 Control

When you need a reliable direct spark ignition control for 120 VAC gas-fired systems, the Fenwal 35-705501-001 stands as a professional-grade solution. This microprocessor-based module is engineered to manage the gas valve and spark ignition for natural, LP, and manufactured gases in applications up to 400,000 BTU. Integrated with a 4-second trial for ignition (TFI) and a single-try ignition sequence, it provides rapid startup without a pre-purge delay, making it ideal for construction heaters, crop dryers, and commercial cooking equipment.

The 35-705501-001 DSI control features remote flame sensing and an on-board diagnostic LED to simplify field troubleshooting. Its rugged, conformal-coated design ensures moisture resistance up to 95% R.H., maintaining stable performance in environments ranging from -40°F to +175°F. For contractors, the 120v DSI module provides precise, repeatable timing cycles and polarity-insensitive flame sensing, reducing the risk of installation errors and ensuring seamless HVAC ignition control replacement.

• Microprocessor-Based Reliability: Delivers precise, repeatable timing for consistent burner operation.
• Enhanced Troubleshooting: Diagnostic LED provides instant feedback on system faults and flame status.
• Broad Compatibility: Suitable for infrared heaters, commercial ovens, and high-output gas burners.
• Robust Safety: Continuous flame monitoring with a 0.8-second flame failure response time.
• Industrial Build: Designed to withstand extreme temperatures and vibration in demanding HVACR environments.

What does 'NoPP' indicate on this control?
'NoPP' signifies that there is no pre-purge period. The module initiates the trial for ignition immediately upon receiving a call for heat.

Can I use this for propane (LP) applications?
Yes, this Fenwal ignition module is compatible with natural gas, LP, and manufactured gas systems.

How do I measure the flame signal on this module?
Utilize the built-in flame current test pins (FC+ and FC-) with a DC micro-ammeter. A steady signal of at least 1.0 µA is required for stable burner operation.

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.