Description
The Honeywell ST7800A1112 is a 12-minute purge timer designed for use with the Honeywell 7800 Series Burner Control System. It provides a timed pre-purge cycle that clears combustible gases from the combustion chamber before ignition, helping to ensure safe and code-compliant burner startup in commercial and industrial heating applications.
Key Features
- 12-minute pre-purge timing cycle for thorough combustion chamber ventilation
- Designed specifically for use with Honeywell 7800 Series Burner Controls
- Supports safe burner startup by purging residual combustible gases prior to ignition
- Plug-in module design for straightforward installation and replacement
- Reliable timing performance for consistent, repeatable purge cycles
- Suitable for commercial and industrial boiler and burner control applications
Compatibility
- Compatible with Honeywell 7800 Series Burner Control Systems
- Works with RM7800, RM7840, and related 7800 Series relay modules
Application
The ST7800A1112 purge timer is a critical safety component in commercial combustion control systems. When installed in a 7800 Series burner control, it enforces a mandatory 12-minute pre-purge period before the ignition sequence begins, reducing the risk of combustion accidents caused by accumulated fuel vapors. This timer is ideal for boiler rooms, industrial process heaters, and other applications where extended purge times are required by code or system design.
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