The installation of unions in both the hot and cold water supply lines is recommended for ease of removing the water heater for service or replacement.
建议在热水和冷水管线上安装管接头，以方便热水器的维修或更换。
The installation of unions in both the hot and cold water supply lines is recommended for ease of removing the water heater for service or replacement.
建议在热水和冷水管线上安装管接头，以方便热水器的维修或更换。
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