Technical Overview
The Honeywell RM7800M1037 is a microprocessor-based integrated burner control for automatically fired gas, oil, or combination fuel single-burner applications. This relay module delivers automatic burner sequencing, flame supervision, system diagnostics, and safety shutdown functions. The complete system requires several additional components: a Q7800 wiring subbase, a compatible plug-in flame amplifier, an ST7800 purge timer card, and the keyboard display module. An integrated grounding pin ensures stable electrical connections in demanding industrial environments. The module supports on-off and modulating burner operations, thereby offering flexibility for various combustion configurations. It is SIL 3 capable when configured with appropriate flame detection systems, meeting rigorous safety standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model Number | RM7800M1037 |
| Product Type | Burner Control / Relay Module |
| Series | 7800 SERIES |
| Power Supply | 120 Vac (+10/-15%), 50/60 Hz (±10%) |
| Power Dissipation | 10 W (relay module), 3 W (display module) |
| Maximum Connected Load | 2000 VA |
| Fuse Rating | 15 A maximum, Type SC or equivalent Fast Blow |
| Flame Failure Response Time | 0.8 to 3.0 seconds (depends on amplifier) |
| Pilot Flame Establishing Period | 4 or 10 seconds (selectable) |
| Main Flame Establishing Period | 10 or 15 seconds |
| Post-Purge Time | Adjustable up to 60 minutes (preset at 15 seconds) |
| Pre-Purge Time | Determined by ST7800A purge card (2 seconds to 30 min) |
| Operating Temperature | -40°C to +60°C (-40°F to +140°F) |
| Storage Temperature | -40°C to +66°C (-40°F to +150°F) |
| Humidity Rating | 85% RH continuous, noncondensing |
| Vibration Tolerance | 0.5G continuous |
| Dimensions | 127 x 127 x 133 mm |
| Weight | 0.83 kg |
| Flame Amplifier Compatibility | R7847, R7848, R7849, R7851, R7852, R7861, R7886 |
| Mounting Type | Panel, wall, or burner mount (Q7800 subbase required) |
| Approvals | UL Listed, CSA Certified, FM Approved, SIL 3 Capable |
| Country of Origin | USA |
Key Features
Microprocessor-Based Control – The advanced processor provides a level of safety and functional capability beyond conventional controls.
Non-Volatile Memory – The module retains fault history, operating hours, and cycle counts even after complete power loss.
Interchangeable Amplifiers – Plug-in flame amplifiers simplify field replacement and customization for different flame detection methods.
Comprehensive Diagnostics – The system includes first-out annunciation and self-diagnostics, thereby simplifying troubleshooting.
Visual Status Indication – The keyboard display module provides sequence status and fault diagnostics locally or remotely.
Modbus Communication – Optional S7810M1003 module enables communication interface capability.
Remote Reset – Optional S7820A1007 Remote Reset Module supports remote reset functionality.
Selectable Pilot Timing – The 4 or 10-second pilot flame establishing period provides flexibility for different burner configurations.
Required Components
The Honeywell RM7800M1037 requires several separately purchased components for complete operation: a Q7800A or Q7800B Universal Wiring Subbase, a compatible plug-in flame signal amplifier, and an ST7800A Plug-in Purge Timer Card. The optional S7800 Keyboard Display Module provides status indication and configuration capabilities.
Applications
This burner control excels in industrial combustion systems, including boilers, process furnaces, ovens, and heaters. It performs reliably in power generation facilities, chemical processing plants, and manufacturing environments where automatic burner sequencing with flame supervision is critical for safety and efficiency.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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