Honeywell On-Off Primary Burner Control - RM7896D1019/U

The On-Off Primary Burner Control by Honeywell is a crucial component in industrial automation, offering both pre and post-purge functions. It operates at 120 VAC and can accommodate 50/60 Hz, featuring an interrupted pilot type with a 10-second main flame establishing period and a pilot flame establishing period of either 4 or 10 seconds. This model also includes a 15-second post-purge and a delayed main valve for optimal performance.

This burner control is designed with several advanced functions, including automatic burner sequencing, flame supervision, system status indication, and in-depth system or self-diagnostic capabilities for efficient troubleshooting. A dynamic airflow switch is incorporated in the model for superior control, while its functionality requires a subbase, an amplifier, and a purge card.

The On-Off Primary Burner Control is also versatile, offering options such as a Modbus interface, keyboard display module, remote display module, and a first-out expanded annunciator for enhanced operations and usability. Five integrated LEDs provide crucial sequence information, and its design allows for interchangeable plug-in amplifiers.

Keeping user convenience in mind, the burner control facilitates local or remote annunciation of operation and fault information using the optional S7800 Keyboard Display Module. It also incorporates non-volatile memory that retains history files and lockout status even in the event of a power loss. Users have the option to select a recycle or lockout on loss of airflow or flame. Additionally, the system includes a shutter drive output for a more comprehensive control solution.

This primary control is designed for on-off operations with pre and post-purge, suiting a wide range of industrial applications. It can perform reliably under operating conditions ranging from -40 F to 140 F. The system's prepurge is determined by the ST7800A purge timer card, while interlocks are customizable as per user requirements.