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Fenwal 35-705501-005 Ignition Control Board
Fenwal 35-705501-005 Ignition Control Board
Our Price: $233.81

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Product Code: 35-705501-005

Description Technical Specs Extended Information
Fenwal 35-705501-005 120 VAC Direct Spark Plastic enclosure Ignition Control Board
120 VAC Microprocessor Based Direct Spark Ignition Control


  • 3 Enclosure Configurations
    • Case and Cover - dust and foreign object protection
    • Open Board with Stand-Offs - saves space and cost
    • Potted - protection for washdown and extreme vibration
  • ?2 Wiring Options: quick connects and multi-pin connector
  • 2 Trial for Ignition Options: 1 and 3 try
  • 4 Trial for Ignition Times: 4, 7,10 and 15 seconds (customized timings available)
  • 2 Flame Sense Options: single spark and sense and remote sense
  • 2 Reset Options: thermostat/power off and automatic (1 hour reset)
  • Diagnostic LED: 3 error codes for accurate troubleshooting
  • Flame Current Test Pins: instant access to circuit for troubleshooting
  • Polarity Insensitive: reduces chance of miswiring


  • Construction and Agriculture Heaters
  • Crop Dryers
  • Ceramic and Black Body Infrared Heaters
  • Commercial Cooking Equipment
  • Any 120 VAC Gas Burner Application under 400K BTU

The 35-70 is a 120 VAC direct spark ignition control for controlling a gas valve and igniting LP or natural gas fired equipment and gas burner applications that provide a 120 VAC operating signal.


The microprocessor circuit design provides precise, repeatable timing sequences for ignition times and purge times (pre- and inter-) as well as multiple tries for ignition, one hour automatic reset and flame sensing during pre-purge. The on-board diagnostics with LED output provide assistance with trouble-shooting to ensure safe and efficient burner operation


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