Description
The Fenwal 35-725200-505 is a potted single spark-and-sense direct spark ignition (DSI) module from Fenwal’s trusted 35-7 Series, engineered for dependable ignition performance in commercial and industrial burner applications. The potted construction protects internal electronics from moisture, vibration, and contaminants, making it well suited for demanding environments where long-term reliability is essential.
Key Features
- Single spark-and-sense design — uses one electrode for both spark ignition and flame sensing, simplifying installation and reducing component count
- 10-second trial for ignition (TFI) — provides a controlled ignition attempt window before lockout, supporting safe and efficient burner startup
- Potted module construction — encapsulated electronics resist moisture, dust, and vibration for extended service life in harsh environments
- Direct spark ignition (DSI) technology — eliminates the need for a standing pilot, improving energy efficiency and reducing gas consumption
- Compact, industry-standard form factor — designed for straightforward OEM replacement and retrofit applications
- Part of Fenwal’s proven 35-7 Series ignition control family — widely used across commercial heating, foodservice, and industrial burner equipment
Application
The 35-725200-505 is ideal for OEM and replacement use in commercial furnaces, boilers, rooftop units, foodservice equipment, and other gas-fired appliances requiring a reliable direct spark ignition solution. The single spark-and-sense configuration reduces wiring complexity while the potted housing ensures consistent operation across a wide range of installation conditions.
Product Specifications
- Brand: Fenwal
- SKU / Part Number: 35-725200-505
- Series: 35-7 Series DSI Controls
- Ignition Type: Direct Spark Ignition (DSI)
- Sensing Configuration: Single Spark & Sense (combined electrode)
- Trial for Ignition (TFI): 10 seconds
- Construction: Potted (encapsulated) module
Why Choose Fenwal?
Fenwal has been a leading name in combustion safety and ignition controls for decades. Their 35-7 Series modules are recognized throughout the HVAC and burner industries for consistent performance, robust construction, and broad OEM compatibility. The 35-725200-505 continues that legacy with a design that prioritizes safety, ease of installation, and long service life.
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