What is the meaning of the equipment level A, B, C, and D shown in the equipment case when the boiler is informed online?
Class D: Steam boiler with rated steam pressure less than or equal to 0.1MPa; hot water boiler with rated water temperature less than 120 ℃ and rated heat capacity less than or equal to 2.8MW
Class C: steam boiler with rated steam pressure less than or equal to 0.8MPa and rated evaporation less than or equal to 1t / h; hot water boiler with rated water temperature less than 120 ℃
Class B: Steam boilers with a rated vapor pressure less than or equal to 2.5 MPa (0.8-2.5)