RM7823A1016/U Flame Switch Relay | Honeywell

The RM7823A1016/U is a microprocessor-based integrated flame switch designed to detect burner flames using rectification, ultraviolet (UV), or infrared (IR) sources. It functions strictly as a flame detector relay featuring two single-pole, double-throw (SPDT) relay outputs, requiring a suitable primary control to handle safe-start checks, safety lockouts, and load switching.

System Compatibility and Architecture

Compatible with any 7800 Series amplifier and existing Honeywell flame detectors, the unit provides relay action depending on flame presence. It incorporates dynamic self-check logic and Dynamic AMPLI-CHECK circuitry, offering interchangeable plug-in flame amplifiers that yield either 0.8 or 3.0 seconds of flame failure response time (FFRT).

Diagnostics and Data Logging

The controller features three status LEDs for power, flame, and alarm indications, alongside nonvolatile memory that retains history files and fault logs during power loss. Optional diagnostics via an optional Keyboard Display Module provide burner controller data, including flame signal strength, operating hours and cycles, and fault history logs.

Technical Parameters

Frequently Asked Questions

Q: What primary functions does the Honeywell RM7823A1016/U perform in a burner system?

A: It acts as an integrated flame detector relay providing two SPDT outputs, but requires a separate primary control to execute safety lockouts, safe-start checks, and load switching.

Q: How is the flame failure response time determined for this unit?

A: The FFRT is either 0.8 or 3.0 seconds, depending on the specific plug-in flame amplifier selected for the installation.