Introduction
The Honeywell RM7890A1031 Burner Module is a microprocessor-based integrated burner control designed for automatic primary control of on/off fired burners using gas, oil, or combination fuels. As a core component in industrial and commercial combustion systems, this module delivers advanced safety, diagnostics, and sequencing capabilities, ensuring proper flame supervision and precise control logic. Built for reliability and precision, it provides continuous, safe operation in demanding environments.
Technical Specifications
| Specification | Description |
|---|
| Model | Honeywell RM7890A1031 Burner Module |
| Module Type | Primary Burner Control Module |
| Application | Automatic On/Off Burner Sequencing |
| Voltage | 120 VAC (+10 /‑15 %) |
| Frequency | 50 Hz / 60 Hz (±10 %) |
| Pilot Flame Establishing Period | Fixed 30 seconds |
| Flame Input Type | Intermittent Pilot |
| Operating Temperature Range | −40 °C to +60 °C |
| Storage Temperature Range | −40 °C to +85 °C |
| Mounting | Subbase required (panel or wall) |
| Weight | ~0.8 kg (1 lb 13 oz) |
| Dimensions | ~127 × 127 × 133 mm (with standard subbase) |
| Required Components | Subbase and flame amplifier (sold separately) |
| Safety Approvals | UL, CSA, FM, FCC Class B |
Applications
The RM7890A1031 Burner Module is ideal for controlling and safeguarding burner systems requiring precise sequencing and robust flame supervision:
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Automatic burner control for industrial boilers and furnaces
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Fuel-fired heaters in manufacturing and processing plants
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Commercial combustion systems using gas, oil, or combination fuels
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HVAC systems requiring reliable flame safeguard logic
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Burner retrofit and upgrade projects
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Systems requiring diagnostic feedback and fault history for maintenance planning
Its microprocessor control enables smarter management of ignition, pilot proving, and flame status monitoring.
Advantages
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Advanced Microprocessor Control — Delivers precise sequencing, flame supervision, and automatic safety checks.
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Non-volatile Memory — Retains operating status and history after power loss, aiding diagnostics and fault analysis.
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Diagnostic Integration — Supports system status indication and troubleshooting.
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Flexible Expansion — Compatible with multiple subbases and flame amplifiers for different burner types.
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Selectable Safety Behavior — Configurable relight or lockout on flame loss for tailored safety response.
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LED Indicators — On-module visual status feedback simplifies setup and maintenance.
These benefits enhance safety, simplify troubleshooting, and extend equipment life compared with conventional burner controls.
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