120V Microprocessor-Based Control for Interrupted Pilot Systems
The Honeywell RM7838C2012 is a microprocessor-based primary burner control designed for use in burner systems with an interrupted pilot configuration. This control module is part of the RM7800 Series and provides automatic burner sequencing, flame supervision, system diagnostics, and safety shutdown. It is ideal for gas, oil, or combination fuel burners used in commercial and industrial environments.
Technical Specifications
- Model: RM7838C2012
- Series: RM7800
- Power Supply: 120V AC (+10%, -15%)
- Frequency: 50/60 Hz
- Application: Interrupted Pilot, On-Off Burner Control
- Pilot Type: Interrupted
- Flame Establishing Period – Pilot: 4 or 10 seconds
- Flame Establishing Period – Main: Intermittent
- PrePurge: Configured via ST7800A Plug-in Purge Timer
- Airflow Switch Check: Included
- Interlocks: Selectable
- Mounting: Requires Q7800A or Q7800B Subbase
- Flame Amplifier Compatibility: R7847, R7848, R7849, R7851, R7852, R7861, R7886
- LED Indicators: 5 LEDs for sequence and lockout status
- Nonvolatile Memory: Retains history and flame signal data after power loss
- Temperature Range: -40°F to +140°F (-40°C to +60°C)
- Vibration Tolerance: 0.5 G
- Weight: 1 lb 15 oz (0.9 kg)
- Condition: New
Key Features
- Designed for interrupted pilot burner applications
- Provides safe burner startup, operation, and shutdown
- Supports UV, IR, and flame rod detection through plug-in amplifiers
- Prepurge timing set via purge timer module
- Stores burner history, lockout codes, and flame signal strength
- Supports remote annunciation, reset, and keyboard display modules
- LED indicators provide clear diagnostic feedback
- Modular design for fast installation and replacement
Compatible Accessories
- Q7800A / Q7800B Universal Wiring Subbases
- ST7800A Plug-in Purge Timer
- R7847, R7848, R7849, R7851, R7852, R7861, R7886 Flame Amplifiers
- S7800A Keyboard Display Module
- Communication and annunciation modules
Industry Applications
- Boilers and hot water systems
- Process burners and ovens
- Fuel-fired commercial heating systems
- Combustion safety systems requiring pilot interruption
Installation & Maintenance Notes
- Install with correct subbase and purge timer
- Use flame amplifier appropriate for the sensing method
- Monitor flame signal using LEDs or optional display
- Review lockout history and burner runtime via built-in memory
- Confirm airflow switch function and interlock setup during startup
This part is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.