7800 Series (EC78xx)
Burner Control Modules
A flexible, modular family of relay-based burner control units for industrial combustion reliability and safety.
Series Overview
The Honeywell 7800 Series (EC78xx) is a modular family of relay-based burner control units designed for industrial combustion systems that require high reliability, flexible system architecture, and strict safety supervision.
Unlike fully integrated digital controllers, the 7800 Series uses a modular relay-based design, allowing system integrators to configure burner control systems according to specific operational needs.
Functional Role in Burner Supervision
7800 Series burner control modules are widely applied in:
- Industrial boilers and steam generators
- Process furnaces and thermal equipment
- Gas, oil, and dual-fuel burner systems
- Industrial combustion systems requiring modular relay logic
Key Differences
Modular Architecture & Differentiation
The 7800 Series is structured around interchangeable relay modules, with key differences including:
- Burner Operation Mode: Options for On-Off or Modulating control logic.
- Diagnostic Level: Varying degrees of diagnostic and safety monitoring.
- System Expansion: Capability for relay configuration and system expansion.
- Compatibility: Designed for broad compatibility with flame detection and safety accessories.
This modular design allows precise adaptation to different industrial burner configurations.
Applications
- Industrial boilers & steam generators
- Process furnaces & thermal equipment
- Gas, oil, and dual-fuel burners
- Modular relay logic requirements
- Safety supervision retrofits
Model Comparison
7800 Series Model Overview
| Model | Control Type | Key Function |
|---|---|---|
| EC7820A1026 | Relay Control | Primary burner sequencing |
| EC7823A1004 | Flame Relay | Flame detection and supervision |
| EC7830A1033 | Relay Control | Standard industrial burner control |
| EC7840L1014/U | Modulating Relay | Modulating burner applications |
| EC7850A1072/U | Relay Control | Advanced diagnostics |
| EC7850A1122/U | Safety Relay | Safety-focused burner control |
| EC7890B1028/U | Relay Control | Automated fuel systems |
| EC7895C1000/U | Relay Control | Integrated safety logic |
Standard Relay Control
Typically used for standard relay-based burner control.
Modulating Control
Preferred for modulating burner systems.
Safety & Diagnostics
Selected for applications requiring enhanced diagnostics or safety logic.
All 7800 Series Models
EC78 Relay Modules
RM78 Relay Modules
Amplifiers (R78)
Timers (ST78)
Subbases (Q78)
Other Models
Need Relay Modules?
Contact our team for 7800 Series configuration help and replacement modules.