
Fenwal 35-655706-017 Control
The Fenwal 35-655706-017 is a specialized 24 VAC microprocessor-based Hot Surface Ignition (HSI) control designed for rigorous performance in gas-fired HVAC equipment. Engineered for rapid response, this 24V gas ignition module features a 4-second heat-up time for the mini HSI element, ensuring fast burner engagement. As part of the Series 35-65 family, it integrates advanced safety logic, monitoring the demand for heat, combustion blower operation, and airflow switch status while maintaining continuous flame supervision using DETECT-A-FLAME technology. This Fenwal ignition board utilizes a zero-second pre-purge and a 15-second inter-purge cycle, delivering precise timing sequences to optimize combustion efficiency. With on-board LED diagnostics, technicians can quickly troubleshoot system faults, reducing downtime during critical service calls. Built for versatility, this OEM-grade HVAC control module is compatible with natural gas, propane, and manufactured gas applications, making it a reliable choice for commercial boilers, furnaces, and water heaters.
Key Benefits:
- Rapid Ignition: 4-second heat-up time specifically designed for mini HSI ignitors to accelerate startup.
- Safety Monitoring: Microprocessor continuously checks for safe start conditions and provides full-time flame sensing.
- Field Diagnostics: Integrated LED status light and flame current test pins streamline troubleshooting and maintenance.
- Multi-Trial Logic: Configured for multiple ignition trials with a 15-second Trial for Ignition (TFI) period.
- Robust Construction: Operates in extreme temperatures ranging from -40°F to 176°F for industrial-grade reliability.
Common Questions:
Does this module support remote flame sensing?
Yes, the Fenwal 35-655706-017 supports both local and remote flame sensing configurations to match specific burner hardware requirements.
What is the purpose of the 15-second inter-purge?
The 15-second inter-purge ensures that any unburned fuel is cleared from the combustion chamber between ignition trials, maintaining safe operation levels.
Can I use this with a 120V ignitor?
While this is a 24 VAC control module, certain models within the series offer field-selectable line voltage for 120/240 VAC ignitor options; always verify your specific wiring diagram for compatibility.
This item is not eligible for free shipping.
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.
Original: $204.97
-65%$204.97
$71.74Fenwal 35-655706-017 Control
The Fenwal 35-655706-017 is a specialized 24 VAC microprocessor-based Hot Surface Ignition (HSI) control designed for rigorous performance in gas-fired HVAC equipment. Engineered for rapid response, this 24V gas ignition module features a 4-second heat-up time for the mini HSI element, ensuring fast burner engagement. As part of the Series 35-65 family, it integrates advanced safety logic, monitoring the demand for heat, combustion blower operation, and airflow switch status while maintaining continuous flame supervision using DETECT-A-FLAME technology. This Fenwal ignition board utilizes a zero-second pre-purge and a 15-second inter-purge cycle, delivering precise timing sequences to optimize combustion efficiency. With on-board LED diagnostics, technicians can quickly troubleshoot system faults, reducing downtime during critical service calls. Built for versatility, this OEM-grade HVAC control module is compatible with natural gas, propane, and manufactured gas applications, making it a reliable choice for commercial boilers, furnaces, and water heaters.
Key Benefits:
- Rapid Ignition: 4-second heat-up time specifically designed for mini HSI ignitors to accelerate startup.
- Safety Monitoring: Microprocessor continuously checks for safe start conditions and provides full-time flame sensing.
- Field Diagnostics: Integrated LED status light and flame current test pins streamline troubleshooting and maintenance.
- Multi-Trial Logic: Configured for multiple ignition trials with a 15-second Trial for Ignition (TFI) period.
- Robust Construction: Operates in extreme temperatures ranging from -40°F to 176°F for industrial-grade reliability.
Common Questions:
Does this module support remote flame sensing?
Yes, the Fenwal 35-655706-017 supports both local and remote flame sensing configurations to match specific burner hardware requirements.
What is the purpose of the 15-second inter-purge?
The 15-second inter-purge ensures that any unburned fuel is cleared from the combustion chamber between ignition trials, maintaining safe operation levels.
Can I use this with a 120V ignitor?
While this is a 24 VAC control module, certain models within the series offer field-selectable line voltage for 120/240 VAC ignitor options; always verify your specific wiring diagram for compatibility.
This item is not eligible for free shipping.
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 35-655706-017 is a specialized 24 VAC microprocessor-based Hot Surface Ignition (HSI) control designed for rigorous performance in gas-fired HVAC equipment. Engineered for rapid response, this 24V gas ignition module features a 4-second heat-up time for the mini HSI element, ensuring fast burner engagement. As part of the Series 35-65 family, it integrates advanced safety logic, monitoring the demand for heat, combustion blower operation, and airflow switch status while maintaining continuous flame supervision using DETECT-A-FLAME technology. This Fenwal ignition board utilizes a zero-second pre-purge and a 15-second inter-purge cycle, delivering precise timing sequences to optimize combustion efficiency. With on-board LED diagnostics, technicians can quickly troubleshoot system faults, reducing downtime during critical service calls. Built for versatility, this OEM-grade HVAC control module is compatible with natural gas, propane, and manufactured gas applications, making it a reliable choice for commercial boilers, furnaces, and water heaters.
Key Benefits:
- Rapid Ignition: 4-second heat-up time specifically designed for mini HSI ignitors to accelerate startup.
- Safety Monitoring: Microprocessor continuously checks for safe start conditions and provides full-time flame sensing.
- Field Diagnostics: Integrated LED status light and flame current test pins streamline troubleshooting and maintenance.
- Multi-Trial Logic: Configured for multiple ignition trials with a 15-second Trial for Ignition (TFI) period.
- Robust Construction: Operates in extreme temperatures ranging from -40°F to 176°F for industrial-grade reliability.
Common Questions:
Does this module support remote flame sensing?
Yes, the Fenwal 35-655706-017 supports both local and remote flame sensing configurations to match specific burner hardware requirements.
What is the purpose of the 15-second inter-purge?
The 15-second inter-purge ensures that any unburned fuel is cleared from the combustion chamber between ignition trials, maintaining safe operation levels.
Can I use this with a 120V ignitor?
While this is a 24 VAC control module, certain models within the series offer field-selectable line voltage for 120/240 VAC ignitor options; always verify your specific wiring diagram for compatibility.
This item is not eligible for free shipping.
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.












