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.

再循环温自动调节器的温度设置必须比系列N170-M2阀门的设置温度低510华氏度，否则，再循环器将会不断运行。