COMBUSTION CONTROLS FOR BOILERS

Because this system does not apply any correction for changes in air (or fuel) density, the boiler system typically requires retuning (i.e., readjustment of air and fuel linkage settings) at least twice a year when the average ambient temperature changes. A key requirement to this system is position feedback. Because it is not mechanically linked, each device needs to provide proof of position to ensure enough airThow is being provided. The selection of the burner control system can affect boiler operation, main tenance and efficiency A single-point positioning scheme is the least expensive and simplest system available while a metering scheme is the most costly and complex.