Overview
The Trane CNT3457 is an Original Equipment Manufacturer (OEM) integrated direct spark ignition (DSI) module. This component is crucial for the safe and reliable operation of Trane Heating, Ventilation, and Air Conditioning (HVAC) systems, typically found in furnaces. The module manages the sequence of operations for ignition, ensuring that the main burner is lit efficiently and safely via a direct spark system. It serves as a necessary replacement part to maintain the integrity and functionality of the furnace’s ignition control.
Features
The primary feature of the CNT3457 is its function as an integrated DSI module, combining the spark generation and flame sensing into one control unit. Key features include:
- OEM Quality: Guaranteed compatibility and reliable performance as a genuine Trane component.
- Direct Spark Ignition: Provides a highly reliable method for lighting the gas burner.
- Integrated Control: Manages the ignition timing, flame proving, and safety lockout sequence.
Specifications
Specific known specifications for this part include:
- MPN: CNT3457
- Brand: Trane
- Weight: 0.70 lbs
The module is designed to operate within the specific electrical parameters of compatible Trane HVAC units.
Applications
The Trane CNT3457 Integrated DSI Module is used exclusively as a replacement part in various Trane gas furnaces and heating units that utilize a direct spark ignition system. It is essential for ensuring the correct and safe firing of the furnace burner in residential, commercial, and industrial HVAC applications.



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