The ATTACK KZT Plus consists from the stainless steel multi – plate exchanger and stainless steel mixing burner, that is equipped with an electronic ignition with ionisation flame control, modulation fan and modulation gas valve. The D.H.W. is produced by a special accumulation multi-layer tank.
All the ATTACK® boilers beeing offered are provided with the electronic control board with the modern microprocessor using the PID output modulation, autodiagnostics and optimization of the operating phases, detection and indication of the error messages to ensure the safe and economical operation.
After installation of the set of the external sensor can the ATTACK® boiler control its function by the temperature compensation – the full-value equithermal regulation. It means that the boiler automatically adjusts the final output according to the external temperature changes with no need to use the control button for the output temperature regulation, which brings significant energy saving and moreover, it guarantees maximal comfort to the user.
When the temperature in boiler falls under 6 °C, the burner is ignited, the three-way valve is set into the halfposition and the pump is running. This way is the appliance protected against damage by frost. The function is active only if the boiler is connected to the gas and the electricity mains.
CONTROLLED AFTER-RUN OF THE PUMP
All the ATTACK® boilers are equipped with a special function that enables to move all the accumulated warm arose by the heat persistence of the exchanger into the radiators of central heating after every burner extinction.
Legionella is typical form of the D.H.W. pollution caused by bacteries that are particularly dangerous to the human’s health. This bacteria is eliminated by warming the water to the temperature higher than 60 °C. Because of this, the ATTACK boilers at least once a week warm the water in tank to 65 °C, regardless from the user’s setting of the D.H.W. thermostat.
ANTI-BLOCKAGE PROTECTION OF THE PUMP FUNCTION
If it does not come to activation of the pump within 24 hours, it is started automatically for every 5 seconds, in order to avoid from its blockage by sludge (e.g. in the summer season or during the longterm inactivity).