Description
The Honeywell ST7800C1136 Purge Timing Card is a control module designed to avoid a fixed 30-minute interval in burner management HVAC systems using RM7838C relay modules. It regulates the airflow purge cycle before ignition, allowing removal of residual combustible gases from the combustion chamber. Installed within the control platform, it supports proper sequencing during boiler and heating startup operations. This component plays a vital role in system safety and accurate by ensuring controlled purge timing, maintaining compliant ignition procedures, and supporting stable combustion performance in commercial applications.
