Fenwal 35-615221-001 Ignition Module
The Fenwal 35-615221-001 Ignition Module is a robust 24V Direct Spark Ignition (DSI) control engineered for precision in commercial and residential heating applications. Designed for single-electrode or dual-electrode sensing, this DSI gas ignition control manages the gas valve and main burner spark ignition while providing continuous flame rectification monitoring. Technically, the module is configured with a 30-second pre-purge to clear the combustion chamber and a 4-second trial-for-ignition (TFI) period. As a 1-try ignition sequence model, it is built for systems where immediate lockout or specific safety protocols are required upon flame failure. This microprocessor-based control serves as a high-reliability Fenwal replacement part for furnaces, boilers, and water heaters, ensuring stable HVAC burner control even in demanding environments. Its compact design allows for straightforward integration into existing control strings, making it a preferred OEM ignition module for technicians troubleshooting ignition failure in 24VAC systems.
Key Technical Benefits:
- Enhanced Safety Timing: Features a fixed 30-second pre-purge and a 4-second TFI to ensure safe and consistent combustion cycles.
- Direct Spark Technology: Eliminates the need for a standing pilot, increasing overall system efficiency and reducing fuel waste.
- Diagnostic Monitoring: Utilizes flame rectification technology for precise detection of the flame signal, preventing unsafe gas accumulation.
- Industrial Build Quality: Constructed to withstand the thermal stressors common in commercial heating equipment and high-cycle HVAC units.
- Versatile Compatibility: Standard 24V DSI configuration facilitates easier field replacements for a wide variety of Fenwal 35 Series controls.
Common Technical Questions:
How do I troubleshoot a lockout on the 35-615221-001?
Since this is a 1-try ignition module, a failure to sense flame within the 4-second TFI will result in immediate lockout. Check the spark electrode gap (typically 1/8 inch), inspect the high-voltage cable for cracks, and ensure the module has a solid chassis ground for proper flame sensing.
Can this module replace a 3-try ignition control?
Technicians should match the ignition sequence of the original equipment. Replacing a 3-try module with this 1-try DSI module will result in a more sensitive safety lockout profile. Verification of the specific wiring diagram and sequence of operation is required before installation.
What are the power requirements for this Fenwal DSI?
The module operates on a nominal 24VAC (18-30VAC) 50/60Hz input. Ensure the transformer has sufficient VA capacity to handle both the module and the gas valve solenoid simultaneously.
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.
Fenwal 35-615221-001 Ignition Module
The Fenwal 35-615221-001 Ignition Module is a robust 24V Direct Spark Ignition (DSI) control engineered for precision in commercial and residential heating applications. Designed for single-electrode or dual-electrode sensing, this DSI gas ignition control manages the gas valve and main burner spark ignition while providing continuous flame rectification monitoring. Technically, the module is configured with a 30-second pre-purge to clear the combustion chamber and a 4-second trial-for-ignition (TFI) period. As a 1-try ignition sequence model, it is built for systems where immediate lockout or specific safety protocols are required upon flame failure. This microprocessor-based control serves as a high-reliability Fenwal replacement part for furnaces, boilers, and water heaters, ensuring stable HVAC burner control even in demanding environments. Its compact design allows for straightforward integration into existing control strings, making it a preferred OEM ignition module for technicians troubleshooting ignition failure in 24VAC systems.
Key Technical Benefits:
- Enhanced Safety Timing: Features a fixed 30-second pre-purge and a 4-second TFI to ensure safe and consistent combustion cycles.
- Direct Spark Technology: Eliminates the need for a standing pilot, increasing overall system efficiency and reducing fuel waste.
- Diagnostic Monitoring: Utilizes flame rectification technology for precise detection of the flame signal, preventing unsafe gas accumulation.
- Industrial Build Quality: Constructed to withstand the thermal stressors common in commercial heating equipment and high-cycle HVAC units.
- Versatile Compatibility: Standard 24V DSI configuration facilitates easier field replacements for a wide variety of Fenwal 35 Series controls.
Common Technical Questions:
How do I troubleshoot a lockout on the 35-615221-001?
Since this is a 1-try ignition module, a failure to sense flame within the 4-second TFI will result in immediate lockout. Check the spark electrode gap (typically 1/8 inch), inspect the high-voltage cable for cracks, and ensure the module has a solid chassis ground for proper flame sensing.
Can this module replace a 3-try ignition control?
Technicians should match the ignition sequence of the original equipment. Replacing a 3-try module with this 1-try DSI module will result in a more sensitive safety lockout profile. Verification of the specific wiring diagram and sequence of operation is required before installation.
What are the power requirements for this Fenwal DSI?
The module operates on a nominal 24VAC (18-30VAC) 50/60Hz input. Ensure the transformer has sufficient VA capacity to handle both the module and the gas valve solenoid simultaneously.
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.
Product Information
Product Information
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Description
The Fenwal 35-615221-001 Ignition Module is a robust 24V Direct Spark Ignition (DSI) control engineered for precision in commercial and residential heating applications. Designed for single-electrode or dual-electrode sensing, this DSI gas ignition control manages the gas valve and main burner spark ignition while providing continuous flame rectification monitoring. Technically, the module is configured with a 30-second pre-purge to clear the combustion chamber and a 4-second trial-for-ignition (TFI) period. As a 1-try ignition sequence model, it is built for systems where immediate lockout or specific safety protocols are required upon flame failure. This microprocessor-based control serves as a high-reliability Fenwal replacement part for furnaces, boilers, and water heaters, ensuring stable HVAC burner control even in demanding environments. Its compact design allows for straightforward integration into existing control strings, making it a preferred OEM ignition module for technicians troubleshooting ignition failure in 24VAC systems.
Key Technical Benefits:
- Enhanced Safety Timing: Features a fixed 30-second pre-purge and a 4-second TFI to ensure safe and consistent combustion cycles.
- Direct Spark Technology: Eliminates the need for a standing pilot, increasing overall system efficiency and reducing fuel waste.
- Diagnostic Monitoring: Utilizes flame rectification technology for precise detection of the flame signal, preventing unsafe gas accumulation.
- Industrial Build Quality: Constructed to withstand the thermal stressors common in commercial heating equipment and high-cycle HVAC units.
- Versatile Compatibility: Standard 24V DSI configuration facilitates easier field replacements for a wide variety of Fenwal 35 Series controls.
Common Technical Questions:
How do I troubleshoot a lockout on the 35-615221-001?
Since this is a 1-try ignition module, a failure to sense flame within the 4-second TFI will result in immediate lockout. Check the spark electrode gap (typically 1/8 inch), inspect the high-voltage cable for cracks, and ensure the module has a solid chassis ground for proper flame sensing.
Can this module replace a 3-try ignition control?
Technicians should match the ignition sequence of the original equipment. Replacing a 3-try module with this 1-try DSI module will result in a more sensitive safety lockout profile. Verification of the specific wiring diagram and sequence of operation is required before installation.
What are the power requirements for this Fenwal DSI?
The module operates on a nominal 24VAC (18-30VAC) 50/60Hz input. Ensure the transformer has sufficient VA capacity to handle both the module and the gas valve solenoid simultaneously.
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.
