Description
The Fenwal 35-705505-017 is a Direct Spark Ignition (DSI) control module engineered for dependable burner ignition in commercial and industrial HVAC heating applications. Operating at 120 volts, this module delivers a precise 15-second trial for ignition (TFI) sequence with a 3-try ignition attempt before entering safety lockout — providing both reliable startup performance and critical system protection.
Key Features
- Direct Spark Ignition (DSI) control technology for fast, reliable burner startup
- 120V operating voltage for compatibility with standard commercial HVAC systems
- 15-second Trial for Ignition (TFI) timing sequence
- 3-try ignition attempts before safety lockout engages
- Safety lockout protection prevents unburned fuel accumulation
- Compact, durable design for long-term field reliability
- Genuine Fenwal OEM replacement module
Product Specifications
- Brand: Fenwal
- Part Number: 35-705505-017
- Ignition Type: Direct Spark Ignition (DSI)
- Supply Voltage: 120V
- Trial for Ignition (TFI): 15 seconds
- Ignition Attempts: 3-Try
Application
The Fenwal 35-705505-017 is designed for use in commercial furnaces, rooftop units, and other gas-fired heating equipment requiring DSI control. Its 3-try sequence allows the system multiple ignition attempts before lockout, reducing nuisance service calls while maintaining full safety compliance. This module is an ideal direct replacement for failed or aging DSI controls in the field.
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