Description
The Fenwal 35-533555-113-0G is a direct spark ignition (DSI) control module engineered for reliable, precise burner management in commercial and industrial HVAC and heating applications. Part of Fenwal’s trusted 35-Series ignition control family, this module delivers consistent ignition sequencing, built-in safety lockout logic, and robust performance in demanding environments.
Key Specifications
- Supply Voltage: 12 VDC
- Ignition Attempts: 3 tries before safety lockout
- Trial for Ignition (TFI): 7 seconds
- Prepurge Period: 15 seconds
- Series: Fenwal 35-Series Ignition Control Module
- SKU / Part Number: 35-533555-113-0G
Product Overview
The 35-533555-113-0G features a 15-second prepurge period that clears combustion chamber gases before ignition, reducing the risk of uncontrolled ignition events. The 7-second trial for ignition window provides adequate time for reliable flame establishment, while the 3-try ignition sequence maximizes startup success before initiating a safety lockout — protecting equipment and personnel.
Features & Benefits
- 12 VDC operation for compatibility with low-voltage burner control circuits
- Three automatic ignition attempts for improved startup reliability
- 7-second trial for ignition (TFI) for dependable flame establishment
- 15-second prepurge cycle to purge combustion chamber before ignition
- Safety lockout after failed ignition attempts to protect equipment
- Compact, durable design suited for commercial and industrial burner systems
- Drop-in replacement for compatible Fenwal 35-Series applications
Applications
- Commercial and industrial gas burners
- Rooftop units and packaged HVAC systems
- Boilers and heating equipment requiring DSI control
- OEM burner assemblies specifying Fenwal 35-Series controls
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