Honeywell RM7890A1015 7800 SERIES Microprocessor-Based Burner Control
The Honeywell RM7890A1015 is a microprocessor-based integrated primary burner control designed for automatically fired single-burner commercial and industrial combustion systems operating on gas, oil, or combination fuels. It provides automated burner sequencing, continuous flame supervision, and advanced system diagnostics with a selectable 4-second or 10-second pilot flame establishing period.
Description
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Comprehensive Burner Automation: Controls automatic burner sequencing, flame supervision, real-time status indication, and dynamic self-diagnostics.
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Modular Plug-In Design: Installs directly onto a standard Q7800 wiring subbase and accepts interchangeable R78xx plug-in flame amplifiers tailored to the detection sensor.
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Selectable Establishing Timing: Features a selectable 4-second or 10-second pilot flame establishing period (PFEP) alongside an intermittent main flame establishing period (MFEP).
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Diagnostic LED Annunciation: Five front-facing LEDs clearly report operating sequence status (Power, Pilot, Flame, Main, Alarm), with blinking fault code output upon lockout.
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Nonvolatile History Storage: Onboard memory retains historical run data, fault logs, and lockout status across power outages.
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Configurable Loss of Flame Response: Jumper-selectable for either automatic recycle/relight or immediate safety shutdown and lockout upon flame failure.
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System Expansion Options: Supports external communication via S7800 keyboard display modules, DATA CONTROLBUS™ interface modules, remote reset switches, and expanded annunciators.
Documentation
No documentation is available for this product.
