1.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.

1.再循环控制水温自器温度须比系列N170-M2阀门温度低5至10华氏度，否则，再循环器将会不断运行。