Because very little hot water is required to maintain the low temperature in the mains (usually 140of), a relatively small capacity recirculator can generally be specified.
由于只需要很少的热水来维持主管道的低温度(通常为60oc)，通常可能需要指定一个相对较小功率的循环器。
Because very little hot water is required to maintain the low temperature in the mains (usually 140of), a relatively small capacity recirculator can generally be specified.
由于只需要很少的热水来维持主管道的低温度(通常为60oc)，通常可能需要指定一个相对较小功率的循环器。
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