Honeywell ST7800A1120 Purge Timer, 15 Minutes, 7800 Series Burner Control

Description

The Honeywell ST7800A1120 is a 15-minute purge timer module engineered for use with Honeywell’s 7800 Series Burner Management Controls. Designed to enforce a timed pre-purge cycle before burner ignition, this timer helps ensure combustion chamber ventilation is completed safely and in compliance with burner system requirements — a critical step in commercial and industrial burner applications.

Key Features

• 15-minute pre-purge timing cycle for safe combustion chamber ventilation
• Designed exclusively for use with Honeywell 7800 Series Burner Management Controls
• Plug-in module design for straightforward installation and replacement
• Enforces timed purge sequences to meet burner safety standards
• Reliable solid-state timing circuitry for consistent, repeatable performance
• Compact form factor fits within the 7800 Series control panel footprint

Application

The ST7800A1120 purge timer is used in commercial and industrial burner control systems where a pre-purge cycle is required before ignition. By integrating directly with 7800 Series Flame Safeguard Controls, this timer ensures the burner management sequence does not proceed to ignition until the full 15-minute purge period has elapsed, helping to prevent hazardous accumulations of unburned fuel in the combustion chamber.

Compatibility

• Compatible with Honeywell 7800 Series Burner Management Controls
• Designed as a plug-in accessory module for the 7800 Series platform

Specifications

• Purge Time: 15 Minutes
• Series Compatibility: Honeywell 7800 Series
• Part Number: ST7800A1120
• Module Type: Purge Timer