Honeywell RM7840 Microprocessor-based Burner Control

  • With Valve Proving Feature: RM7840 requires S7800A1142 Keyboard Display.
  • Flexible and reliable safety control
  • Optional features for valve proving system, displays, communications and annunciation
  • Comprehensive diagnostics for easy troubleshooting
  • For use on boilers, kilns, ovens, furnaces, packaged rooftop units, and more
  • Application – Programming Control
  • Approvals: UL, CSA, FM


Microprocessor-based integrated burner control for automatically fired gas, oil, coal or combination fuel single burner applications. Provides safety, functional capability and features beyond conventional controls.

More Features and Specifications:

  • Access for external electrical voltage checks
  • Application flexibility and communication interface capability
  • Five LEDs provide sequence information
  • Five function Run/Test Switch.
  • Interchangeable plug-in flame amplifiers.
  • Local or remote annunciation of RM7840 operation and fault information.
  • Nonvolatile memory retains history files and lockout status after loss of power.
  • Compatible with existing Honeywell flame detectors.
  • Typical Required Components: Q7800A,B Universal Wiring Subbases. R7847, R7848, R7849, R7851, R7852, R7861, or R7886 Flame Signal Amplifier. ST7800A Plug-in Purge Timer Card.


Technical Documentation

Honeywell RM7840 Technical Documentation

Honeywell RM7840, with Valve Proving Technical Documentation