When operating, what color do Low NOX burners typically show?

Low NOX burners are designed to minimize nitrogen oxide emissions during combustion. When they are operating correctly, the flame produced by these burners typically appears blue or may have a very slight orange hue. This coloration indicates complete combustion with adequate air-to-fuel ratios, which is essential for achieving lower emissions and higher efficiency.

A blue flame signifies that the gas is burning efficiently, with sufficient oxygen available for complete combustion, thereby reducing the creation of pollutants like NOX. In contrast, other colors such as red, green, or deep yellow would suggest incomplete combustion, which is likely to produce higher emissions and could indicate operational issues with the burner. Hence, seeing a blue or slightly orange flame is essential for confirming that the Low NOX burner is functioning optimally and achieving its environmental goals.