Temperature regulator ST-32zPID is designed for central heating boilers

It controls the water circulation pump, blower (fan).

If the boiler temperature is lower than the preset temperature, the controller is in the cycle, in which blowing is working all the time.

The controller ST-32 zPID is a controller with continuous output signal using the control algorithm zPID. In this type of fan power driver is calculated based on the measured temperature of the boiler and the exhaust gas temperature measured at the boiler outlet. Fan operation is carried out continuously over time, and the fan power depends directly on the measured temperature of the boiler, flue gas temperature and the difference of these parameters and their setpoint values. To maintain a stable setpoint temperature without unnecessary overshoot and oscillations are the advantages regulator zPID.

After reaching the set temperature the fan continues to run until the temperature reached about 5 ° C above the set point gradually reducing its power.

Using this type of sensor controller exhaust fuel savings can range from a few to several percent; the temperature of the output water is very stable, resulting in longer life of the heat exchanger (boiler). Checking the flue gas temperature at the outlet of the boiler causes low emission of dust and gases harmful to the environment.