Abstract: The article, took as an example the C-E NATCO heat agent heater mounted on the pipeline from Dong Ying to Huang Dao, introduces the system configuration and features of indirected heater, technology system indirected heating, local control, I²R control of intelligence logic controlunit, control prineiplos, display and alarm parameters of MECA microcomputer. Through C-E NATCO heater operation and adjustion on Donghuang pipeline, the procedures for start up and shutdown of heater, structures and control principles of parallel flame burners, maintenance and operation experience and introduced.