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。
2
From the product design, production, installation, commissioning to provide one-stop service, to provide you with a full set of water treatment solutions.
从产品的设计、生产、安装、调试到售后提供一条龙服务，为您提供全套的水处理解决方案。
3
As part of your comprehensive containment program, you should require the installation of a Series 7 unit as a condition for the user to receive service from the public water system.