美国人家用电热水器
安装说明书和使用及维护指南(12)

如果在冰冻季节关闭热水器，则需要将热水器内的水排干。建议每6个月就要将热水器内胆彻底排水和冲洗一次，除去在运行期间可能累积的沉淀物。请按照下列步骤排去内胆内的水：
　　The water heater should be drained if being shut down during freezing temperatures. It is recommended that the tank be drained and flushed every 6 months to remove sediment which may buildup during operation. To drain the tank perform the following steps:

1. 关闭热水器电源。
   Turn off the power to water heater.

2. 关闭冷水进水阀，打开附近的热水水龙头。
   Close the cold water inlet valve and open a nearby hot water faucet.

3. 用一条软管将排污阀连接到适当的排污口处。
   Connect a hose to the drain valve and terminate it to an adequate drain.

　　重要提示：排水软管额定耐温最小不能低于93oC。如果排水软管的额定温度没有达到上述要求，请打开冷水进水阀，打开附近的热水水龙头，直到水不热为止。
　　Important: Drain hose should be rated for at least 200°F. If the drain hose does not have this rating, open the cold water inlet valve and open a nearby hot water faucet until water is no longer hot.

1. 打开热水器排污阀和附近的热水水龙头。排泄内胆内的所有水。如果需要，用水冲洗内胆，清除沉淀物。
   Open the water heater drain valve and the nearest hot water faucet. Allow all the water to drain from the tank. Flush the tank with water as needed to remove sediment.

2. 关闭排污阀，重新向内胆注水，重新恢复电源。
   Close the drain valve and refill the tank, and restore power.

　　如果打算长期关闭热水器，则排污阀应该保持开启状态。
　　If the water heater is going to be shut down for an extended period, the drain valve should be left open.

　　注：对于台面型热水器的排水，需要拆卸排水观察盖板上的紧固螺丝。通过往下拔将盖板从热水器上卸下来。
　　NOTE: When draining Table Top models, remove the screw securing the drain access cover. Remove the cover by pulling down and away from the water heater