recirculator

基本解释

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.
由於衹需要很少的熱水來維持主琯道的低溫度（通常爲60oC），通常可能需要指定一個相對較小功率的循環器。
NOTE: Recirculating control aquastat must be set at least 5oF to 10oF lower than the temperature setting of the Series N170-M2 valve, otherwise the recirculator will run continually.
注：再循環控制水溫自動調節器的溫度設置必須比系列N170-M2閥門的設置溫度低5至10華氏度，否則，再循環器將會不斷運行。
water recirculator
水再循環器