以下为句子列表：
英文: If installing the water heater in a closed water system, install a relief valve or expansion tank in the cold water line as specified under Closed System/Thermal Expansion.
中文: 如果是在一个封闭的水系统中安装热水器，按照“关闭系统/热膨胀”中的规定，安装一个安全阀或膨胀罐。
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英文: If water heater is full of hot water, open a hot water line at a faucet and allow all hot water to be flushed from the system.
中文: 若热水器充满热水，则打开热水管道上的水龙头，让热水从管道内排出。
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英文: The dynamoelectric tool of the high automation produces the flowing water line for large-scale turned to produce to provide the solid foundation, the real strenght strong research and techniques develop the troops, is high new technique core of the techni
中文: 高自动化的电动工具生产流水线为大规模化生产提供了坚实的基础，实力雄厚的科研和技术开发队伍，是高新技术产品的技术核心保障。
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英文: The manufacturer of this water heater recommends installing a tempering valve in the domestic hot water line as shown in Figures 7 and 8.
中文: 本热水器制造商建议在家庭热水管线上如图7和8所示安装调节阀。
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