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- Honeywell
- RM7840L1018
- Burner Controller
- USA
- 127 x 127 x 133 mm
- 0.822 kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Honeywell RM7840L1018 is a microprocessor-based integrated burner controller from the Honeywell 7800 Series Burner Management System. It is designed for single-burner industrial combustion systems, providing full burner sequencing, flame supervision, ignition control, diagnostics, and safety shutdown functions.
This model is widely used in gas, oil, coal, and combination fuel burner applications where high-integrity combustion safety and reliable automation are required.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | RM7840L1018 |
| Product Type | Integrated Burner Controller |
| Series | 7800 Series |
| Function | Burner sequencing + flame safeguard control |
| Control Type | Microprocessor-based |
| System Role | Primary burner programmer/controller |
| Fuel Compatibility | Gas / Oil / Coal / Combination fuel |
| Flame Detection | Compatible with Honeywell flame amplifiers |
| Safety Functions | Flame monitoring, ignition supervision, lockout protection |
| Operating Voltage | 120 VAC |
| Frequency | 50/60 Hz |
| Mounting Type | Plug-in module (Q7800 subbase required) |
| System Architecture | Modular (subbase + amplifier + purge card + display) |
| Dimensions | 127 × 127 × 133 mm |
| Weight | 0.822 kg |
Function and Working Principle
The RM7840L1018 operates as the primary burner sequencing and safety controller in a Honeywell 7800 system.
Its main functions include:
- Checking all safety permissives before burner startup
- Controlling purge, pre-ignition, ignition, and run sequences
- Supervising pilot and main flame establishment
- Continuously monitoring flame signal during operation
- Managing post-purge shutdown cycles
- Initiating safety lockout under fault conditions
- Providing system diagnostics and fault history via display modules
It ensures combustion only occurs when all safety conditions are satisfied.
Key Features
- Microprocessor-based integrated burner control
- Automatic burner sequencing (purge → ignition → run → shutdown)
- Flame supervision via plug-in amplifier modules
- Self-diagnostics and non-volatile fault memory
- LED sequence status indicators
- Five-function run/test switch support
- Compatible with S7800 display/keyboard module
- Modular 7800 Series architecture
Industrial Applications
- Industrial boilers
- Process furnaces
- Thermal oil heaters
- Kilns and dryers
- Oil, gas, and coal combustion systems
- Single-burner industrial heating systems
Role in Industrial Systems
The RM7840L1018 functions as the main burner programmer/controller, responsible for:
- Safe ignition and flame establishment
- Continuous flame supervision
- Execution of full burner sequencing logic
- Enforcing safety interlocks and shutdowns
- Providing diagnostics for troubleshooting and maintenance
It replaces traditional relay-based burner sequencing systems with microprocessor-based control logic.
Installation Notes
- Installed on Honeywell Q7800 series subbase
- Requires compatible flame amplifier module (UV/IR/flame rod types)
- Requires ST7800 purge timer module depending configuration
- Proper grounding and shielding are critical for flame signal stability
- Commissioning must be performed by qualified combustion engineers
- Wiring must comply with burner safety standards (UL/FM/CSA environments)
Compatible Equipment
- Honeywell Q7800 subbases
- S7800A keyboard/display module
- ST7800 purge timer modules
- Flame amplifiers (R7847, R7852, etc.)
- Flame detectors
- Burner valves and ignition systems
Advantages
- Full integrated burner sequencing control
- High safety integrity and compliance capability
- Strong diagnostics and fault memory features
- Modular architecture simplifies maintenance
- Flexible configuration for different burner applications
Limitations
- Requires full Honeywell 7800 ecosystem (subbase, amplifier, purge module)
- Not usable as a standalone controller
- Requires trained setup and commissioning
- Designed exclusively for combustion systems
Conclusion
The Honeywell RM7840L1018 Burner Controller is a high-integrity integrated combustion safety controller used in industrial burner systems.
It provides full sequencing control, flame supervision, diagnostics, and safety shutdown functions for gas, oil, coal, and combination fuel burners within the Honeywell 7800 Series architecture.