RM7890B1048 | Honeywell Integrated Burner Control

The Honeywell RM7890A1056 and RM7890B1048 Relay Modules are microprocessor based integrated burner controls for automatically fired, gas only (if Valve Proving feature is going to be used), single burner on/off applications. The RM7890A1056 and RM7890B1048 System consists of a relay module, subbase, and amplifier. Options include keyboard display module (KDM) and remote display mounting. Functions the RM7890 provides include automatic on/off burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting. RM7890A1056 and RM7890B1046 Relay Modules offer the following additional features:• Preignition Interlock Input• Selectable Intermittent/Interrupted Pilot Function (full pilot flame and main flame establishing periods apply if interrupted pilot feature selected).• Run/Test Switch for interrupted pilot setup.• Blinkum fault annunciation on safety shutdown (power LED blinks a fault code.• Built-in features set up only using the S7800A1142 display.• Valve Proving System. The Valve Proving System feature provides a systematic way of testing the valve seat integrity to assure the valves are indeed in the closed state when the system is in Standby.