Consultation about boiler heating

Currently, the boiler setting in BioSTEAM is to purchase natural gas for combustion to provide heat. If I want to directly purchase steam for heat supply and use it in TEA and LCA calculations, could I consult you how can I set it up in BioSTEAM? Thanks for your help.

No file, test, or entry point is named in the issue. Begin by clarifying how steam should be purchased and represented in BioSTEAM's TEA and LCA calculations; completion would require either usage instructions or a scoped implementation with validation.

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