Technology: tetrafluoroethane by ordinary heating regardless of the heating of the outer casing and tetrafluoroethylene in the terminal plastic junction box is processed.
工艺：四氟加热管它是由普通加热管的外层加四氟套管，在接线端用塑料接线盒加工而成。
Ground the water heater by connecting a grounding wire from the electrical service ground terminal to the green grounding screw in the junction box of the water heater.
通过将电气部件上的接地端子连接到热水器接线盒里绿色接地螺丝上，实现热水器的接地。
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