The transformation of low-nitrogen boilers requires that the emission of nitrogen oxides from existing gas-fired boilers be ≤30 mg. The emission of nitrogen oxides from old gas-fired boilers is about 120-200, which cannot meet the requirements of low nitrogen emission.

If your main gas boiler design supports low-nitrogen burner, you can replace the original gas boiler burner with a low-nitrogen 30 mg burner to realize the transformation of low-nitrogen boiler.