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- Honeywell
- RM7850A1001
- Burner Controller
- USA
- 127 x 127 x 133 mm
- 0.73 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.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Honeywell RM7850A1001 is a microprocessor-based burner controller from the Honeywell 7800 Series Burner Management System. It is designed for industrial combustion applications requiring reliable burner sequencing, flame supervision, ignition control, diagnostics, and safety shutdown protection.
This controller is commonly used in single-burner gas, oil, coal, or combination fuel systems found in boilers, furnaces, kilns, and process heating equipment.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | RM7850A1001 |
| Product Type | Burner Controller |
| Series | 7800 Series |
| Function | Burner sequencing and 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 | 0.73 kg |
Function and Working Principle
The RM7850A1001 operates as the main burner sequencing and safety controller within the Honeywell 7800 architecture.
Its core functions include:
- Verifying all burner safety permissives before startup
- Managing purge, pre-ignition, ignition, and run sequences
- Supervising pilot and main flame establishment
- Monitoring flame signal continuously during operation
- Controlling post-purge shutdown cycles
- Initiating safety lockout under abnormal conditions
- Providing diagnostic and fault history information
The controller ensures combustion occurs only under validated safe operating conditions.
Key Features
- Microprocessor-based burner sequencing control
- Automatic burner cycle management
- Integrated flame safeguard logic
- Continuous flame supervision
- Self-diagnostics and fault memory storage
- LED sequence and status indicators
- Compatible with S7800 keyboard/display module
- Modular Honeywell 7800 Series architecture
- High reliability industrial safety design
Industrial Applications
- Industrial boilers
- Process furnaces
- Thermal heaters
- Kilns and dryers
- Oil and gas combustion systems
- Single-burner industrial heating systems
Role in Industrial Systems
The RM7850A1001 serves as the primary burner programmer/controller, responsible for:
- Safe burner ignition and shutdown
- Continuous flame supervision
- Execution of combustion sequencing logic
- Enforcing safety interlocks and shutdown conditions
- Providing diagnostic feedback for maintenance and troubleshooting
It replaces traditional electromechanical burner sequencing systems with advanced microprocessor-based control.
Installation Notes
- Installed on Honeywell Q7800 series subbase
- Requires compatible flame amplifier module
- Requires ST7800 purge timer module depending configuration
- Proper grounding and shielding required for flame signal stability
- Wiring must comply with combustion safety standards
- Commissioning should be performed by qualified combustion technicians
Compatible Equipment
- Honeywell Q7800 subbases
- S7800A keyboard/display module
- ST7800 purge timer modules
- Flame amplifiers (R7847, R7852, etc.)
- Flame detectors (UV, IR, flame rod types)
- Burner valves and ignition systems
Advantages
- Full integrated burner sequencing control
- High safety integrity and operational reliability
- Advanced diagnostics and fault tracking
- Modular architecture simplifies maintenance
- Suitable for various industrial burner applications
Limitations
- Requires complete Honeywell 7800 system ecosystem
- Not usable as a standalone controller
- Requires trained setup and commissioning
- Designed specifically for combustion applications
Conclusion
The Honeywell RM7850A1001 Burner Controller is a high-integrity combustion safety controller designed for industrial burner management systems.
It provides automated sequencing, flame supervision, diagnostics, and safety shutdown protection for gas, oil, coal, and combination fuel burners within the Honeywell 7800 Series architecture.