Honeywell Microprocessor Based Integrated Burner Control

MICROPROCESSOR-BASED INTEGRATED BURNER CONTROL FOR AUTOMATICALLY FIRED GAS, OIL, COAL, OR COMBINATION FUEL SINGLE BURNER APPLICATIONS, 120VAC, 10 SECOND OR 15 SECOND MAIN FLAME ESTABLISHING PERIOD, 4 SECOND OR 10 SECOND PILOT FLAME ESTABLISHING PERIOD, INTERRUPTED SECOND STAGE PILOT VALVE, LOCKOUT INTERLOCKS, INTERRUPTED PILOT, 5 SECOND EARLY SPARK TERMINATION, 15 SECOND POST PURGE, USER SELECTABLE AIRFLOW CHECK, FIVE FUNCTION RUN/TEST SWITCH, LHL-LF, AND HF PROVEN

Overview

The Honeywell RM7800/RM7840 Relay Modules are microprocessor-based integrated burner controls for
automatically fired gas, oil, or combination fuel single burner applications. The RM7800/RM7840 Relay Modules are used
for UL/CSA On/Off, UL/CSA Modulating, and FM/IRI Modulating burner applications. The RM7800/RM7840 system
consists of a Relay Module. Keyboard Display Modules (standard with RM7800), Dust Cover (standard with RM7840),
Subbase, Amplifier, and Purge Card. Options include Personal Computer Interface, DATA CONTROLBUS
MODULEô, Remote Display Mounting, First-Out Expanded Annunciator, and Combustion System Managerô Software.

Functions provided by the RM7800/RM7840 include automatic burner sequencing, flame supervision, system
status indication, system or self-diagnostics, and troubleshooting. The RM7800/RM7840 is a solid-state
replacement for the electromechanical R4140 Automatic Programming Control.