Conversion from L-Gas to H-Gas:
Usbeck Natural Gas Burners can be continuously operated 

There exist two types of gases in Germany: L-Gas (Low calorific gas) has a lower methane content than H-Gas (High calorific gas) and thus a lower calorific value.
Within the conversion in regions of Northwest and Western Germany the transported natural gas of group L will be replaced stepwise by group H.

All Natural Gas Burners by Usbeck can be used with both, L-Gas and H-Gas.

A modification is not necessary. Consequently, there is no action required by the user.