As the water in the primary loop circulates, it becomes very hot.
水在主环的循环中变热。
A hot water recirculation loop makes hot water available "on demand," while reducing consumption.
热水循环管带是热水可以到达房间的每个地方，取用方便。
A hot water recirculation loop makes hot water available "on demand," while reducing consumption.
热水循环管带是热水可以到达房间的每个地方，取用方便。
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