Honeywell ST7800C1011 Second Purge Timing Card for Furnace Ignitors & Flame Sensors - 20 RM7838C

The Honeywell ST7800C1011 is a replacement purge timing card designed for use with the RM7838C flame safeguard relay module. This timing card provides a 20-second purge cycle, which is critical for ensuring proper pre-ignition airflow through combustion chambers to clear any accumulated combustible gases before ignition.

Key Features:

• 20-second purge timing for pre-ignition safety
• Direct replacement component for RM7838C relay modules
• Ensures compliance with combustion safety standards
• Factory-calibrated timing accuracy
• Simple plug-in installation

This timing card is an essential component in commercial and industrial burner management systems, helping to prevent dangerous combustion conditions by ensuring adequate pre-purge time. The card simply plugs into the RM7838C module, making replacement straightforward for qualified technicians.