Honeywell RM7898A1018 On-Off Primary Burner Control with Valve Proving, Programmable Post Purge, and LED Fault Annunciation – RM7800 Series

RM7898A1018 On-Off Primary Control
Integrated Burner Control with Valve Proving, Shutter Drive Output, Programmable Post Purge, and Blinking LED Fault Annunciation

The RM7898A1018 is a microprocessor-based, full-function On-Off primary burner control designed for automatically fired gas, oil, or combination fuel single burner systems. Featuring advanced safety and functional capabilities, it includes programmable post purge and a built-in Valve Proving System (VPS) to ensure leak-free operation before burner start-up.

Key Features

• On-Off primary control with Valve Proving and shutter drive output

• Performs automatic burner sequencing and flame supervision

• Programmable post purge via S7800A1142 Keyboard Display Module

• LED indicators provide sequence status and blink fault codes during lockout

• Airflow switch check and shutter drive integration

• Nonvolatile memory retains history and sequence data after power loss

• Interchangeable plug-in flame amplifiers support various flame detection methods

• Optional ModBus, expanded annunciator, remote display, and data logging interfaces

• Supports remote reset, report generation, and lockout or recycle on airflow/flame loss

• Designed for commercial and industrial burner applications needing robust safety and diagnostics

Technical Specifications

Required Components

• Subbase: Q7800A or Q7800B Universal Wiring Subbase

• Amplifier: R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Series

• Purge Timer: ST7800A Plug-in Purge Timer Card

Common Applications

• Commercial and industrial boilers

• Process heating systems

• Single-burner gas or oil-fired equipment

• Systems requiring valve proving and post purge