At the heart of effective combustion control lies the Ratiotronic 6000, a bespoke microprocessor-based system developed by Dunphy. It provides precise control of air and fuel valves, maintaining optimal combustion efficiency. Key features include:

• Dynamic Response: Integral PID loops respond quickly to changes in boiler load and performance.
• Remote Connectivity: Native Modbus communication for easy integration with external systems, with options to convert to Profibus and BACnet.
• Versatility: Suited to Dunphy single- and multi-fuel burners, achieving O₂ levels below 3% across all loads, and under 2% at high fire.
• Flexible Control: Automatic modulation or fixed firing rates, plus up to four fuel–air profiles.
• Retrofit-Friendly: Designed for seamless installation on existing systems.
• Advanced Monitoring: CO, NOx and SOx tracking, along with integrated CANbus links for servo motors and self-checking sensors.

Benefits:

• Fuel savings up to 10% over mechanical linkage systems
• Combined flame safeguard and fuel–air ratio controller
• Reduced CO₂ emissions and improved turndown ratio
• Adjustable set points for off-peak or low-demand periods
• Adaptable to conventional, bio, and waste fuel firing
• Extended boiler lifespan and lower maintenance costs
• Straightforward SCADA integration with standard communication protocols

The Siemens LMV series is an all-in-one burner management solution incorporating burner control, electronic air–fuel ratio control, and gas valve proving within a compact base unit. Optional add-ons include load control, VSD control, and O₂ trim for combustion optimisation.

• Load Control: PID-based temperature/pressure controller featuring cold-start algorithms to minimise boiler wear.
• Extended Operation: Compatible with infrared and UV flame detectors, as well as ionisation probes, for continuous duty.
• Dual-Fuel Capability: Separate inputs/outputs for gas or oil, simplifying diagnostics and eliminating extra relay changeovers.
• Mounting Flexibility: Can be installed directly on the burner or in a control panel.
• Enhanced Safety: Gas valve proving functionality and adjustable safety times aligned with EN746 regulations.

Benefits:

• Integrated gas valve proving for safer operation
• Optional load controller with adjustable set points
• Communication via Modbus for seamless system integration
• “Super” Low NOx performance in the LMV52.4 variant
• Flexible O₂ trim for improved combustion efficiency
• User-friendly interface available in 20 languages
• Reduced installation and maintenance complexities
• Suitable for SIL3 applications

The Lamtec CMS is a highly configurable burner management system, accommodating varied combustion conditions via an extensive range of parameter settings. It supports both pilot and direct ignition processes, with individual configurations for oil and gas firing.

• Output Options: Up to four three-point step outputs, or three plus a continuous output for speed control.
• Built-In Firing Rate Control: Internal controller allows up to two switchable set points for temperature or pressure.
• Leakage Check: An integrated valve leakage test can be performed before ignition or on shutdown.
• Detailed Counters: Separate counters for total, gas, and oil operating hours.

Benefits:

• Compact, failsafe design with up to four actuators
• Straightforward PC-based graphical setup
• Modbus, Profibus, and other communication interfaces for system integration
• Built-in valve leakage check
• SIL3 certification for high-level safety
• Optional CO/O₂ control and flame monitoring
• Mobile operating unit (optional) for on-the-go access