Burner Controls - Retrofit Burner Control SVST

Retrofit burner control systems are eligible for Enhanced Capital Allowances, providing they are microprocessor based and are able to continuously modulate burner output in response to measured boiler temperature or pressure values, over the turn down ratio listed in the appropriate section of the "Burners with Controls" criteria.

The microprocessor must use PID control or more advanced equivalents to control fuel and air flows. It must also precisely control the air/fuel ratio, so oxygen and carbon monoxide (CO) levels in the exhaust gases can be set at the values listed in the appropriate section of the "Burners with Controls" criteria.

All burner control elements including combustion air dampers and fuel valves must be fitted with a precision servomotor, which must be separately controlled and include positional feedback control. The burner control system must incorporate facilities to fully close air dampers on burner shutdown.