在进行电路连接之前，请确认热水器是否已经注满水，冷水进口阀门是否处于开启状态。

Before any electrical connections are made, be sure that the heater is full of water and that the valve in the cold water supply line is open.

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在装配和泵送操作过程中，可以检查所有电路连接和元件功能，并对全部功能进行检查确认。

All electrical connections and com - ponent functions can be checked and full functionality confirmed during assembly and pumpdown operations.

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在装配和泵送操作过程中，可以检查所有电路连接和元件功能，并对全部功能进行检查确认。

All electrical connections and com - ponent functions can be checked and full functionality confirmed during assembly and pumpdown operations.

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