Honeywell ST7800A1021 10-Second Plug-In Pre-Purge Timer Module – RM7800 Series Flame Safeguard Relay Accessory

ST7800A1021 Purge Timer
10 Seconds | For Honeywell 7800 Series Relay Modules

Overview:
The ST7800A1021 purge timer provides a fixed 10-second prepurge interval designed for use with Honeywell 7800 Series relay modules. It ensures a brief and controlled purge cycle prior to burner ignition, helping to clear the combustion chamber safely.

Features:

• Fixed 10-second prepurge timing

• Compatible with Honeywell 7800 Series relay modules

• Supports safe burner startup by controlling purge duration

• Simple to install and integrate within burner control systems