120V Microprocessor-Based Burner Control for Single-Burner Applications
The Honeywell RM7888A1027 is a microprocessor-based relay module designed to control automatically fired gas, oil, or combination fuel single-burner applications. Built for use in industrial and commercial systems, this relay module delivers advanced burner sequencing, flame supervision, and lockout safety. It is part of the RM7800 series and integrates with Honeywell subbases, flame amplifiers, and optional display or communication modules for complete burner management.
Technical Specifications
- Model: RM7888A1027
- Series: RM7800
- Voltage: 120V AC (+10%, -15%)
- Frequency: 50/60 Hz
- Application: Single-burner control (gas, oil, or combination fuel)
- Pilot Type: Intermittent
- Flame Establishing Period – Pilot: 4 or 10 seconds
- Flame Establishing Period – Main: Intermittent
- 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, flame signal, and fault codes
- Memory: Nonvolatile memory retains lockout and operational history
- Condition: New
Key Features
- Provides full sequencing, flame monitoring, and safety lockout
- Compatible with a variety of plug-in flame amplifiers
- Stores operational data, fault codes, and flame signal history
- LED display for live sequence monitoring and troubleshooting
- Accepts input from remote annunciation and reset modules
- Supports manual or automated system diagnostics
- Designed for rapid integration into industrial burner systems
Compatible Accessories
- Q7800A / Q7800B Universal Subbase
- ST7800A Plug-in Purge Timer Module
- R7847, R7848, R7849, R7851, R7852, R7861, R7886 Flame Amplifiers
- S7800A Keyboard Display Module
- S7830 Expanded Annunciator
- S7810A ControlBus and S7810M Modbus Communication Modules
Industry Applications
- Industrial boilers and furnaces
- Fuel-fired process heating systems
- Oil or gas burner control in commercial settings
- Automated burner management systems requiring lockout safety
Installation & Maintenance Notes
- Install only with approved Honeywell subbase and compatible amplifier
- Set flame timing and purge via ST7800A timer module
- Use LED indicators or optional display for fault code reference
- Regularly verify flame signal levels and clean flame sensors
- Confirm proper function of airflow switch and system interlocks
Request a Quote now or call us at 1-800-755-2883 for expert assistance.