When converting an oil furnace to gas, what type of atmospheric burner can be used?

When converting an oil furnace to gas, the in-shot burner is the appropriate choice because it is specifically designed for gas applications, offering efficient combustion and consistent performance. This type of burner atomizes the gas and mixes it with combustion air before it enters the combustion chamber, allowing for precise control of the flame characteristics and combustion process.

This characteristic is essential for ensuring that the furnace operates safely and efficiently after the conversion, as it minimizes the chances of incomplete combustion and related hazards. In-shot burners are robust in design and can easily adjust to the varying operational conditions typically found within an existing oil furnace framework, making them ideal for conversions.

Other types of burners listed may not provide the same level of efficiency or compatibility with gas fuel. For instance, a burner tray is generally used in commercial applications rather than residential conversions of oil to gas, while ribbon burners, which are also effective, might not be suitable for all existing oil furnace designs. Primary air fan assist burners, on the other hand, utilize a fan to inject air, which may lead to complications in adapting them to a system originally designed for oil combustion. Thus, the in-shot burner stands out as the most fitting and effective solution for this conversion process.