Servicing an Electric Boiler After 1 Year of Use

The wall-mounted dual-circuit electric boiler Neon DUOS MAXI WCSM/WH

6-15kW is designed for heating and hot water supply. The boiler is completely silent. The DUOS maxi dual-circuit electric boiler contains everything necessary for a modern heating and hot water system in its compact body.

This boiler kit includes:

• A flat expansion tank with a volume of 7 liters from Zilmet (Italy);
• A safety valve to protect your pipes and boiler from high pressure;
• Automatic air vent - effectively removes airlocks from the heating system (located at the top of the boiler);
• Thermomanometer for visual monitoring of temperature and pressure of the heat transfer fluid in the heating system;
• Capillary thermostat for smooth adjustment of the desired temperature;
• Three-speed circulation pump of European production.

The boiler is equipped with stainless steel heating elements, three power levels with thyristor switching of the heating elements, ensuring silent operation.

For hot water supply, there is an independent stainless steel heat exchanger with a separate group of heating elements, equipped with a safety valve and a flow sensor. This allows the heating elements to be turned on when the tap is opened.

Boiler Operation Principle in "Heating" Mode

Cold water is supplied by the pump through the lower pipe to the tank, heated by the heating elements, and then enters the heating system through the outlet pipe. The temperature of the heat transfer fluid is set by a thermostat for manual temperature control and is monitored using a thermometer. The control panel also has three power level keys for the boiler in "Heating" mode. The specified heating fluid temperature is maintained automatically.

After opening the hot water tap, the boiler's control system turns off the heating of the heat transfer fluid in the heating system and turns on the water heater's heating elements. The controller of the water heater's operation independently determines the optimal power for the heating elements. After closing the hot water tap, the boiler automatically returns to the previously set mode.

"Summer" Mode of the Boiler

Allows you to completely turn off the heating of the heat transfer fluid in the heating system and the circulation pump. In this mode, only the water heater operates when the hot water tap is opened.

For more comfortable use of hot water supply, the boiler in standby mode heats the water in the water heater tank to 40 degrees Celsius and maintains this temperature in all operating modes of the boiler.

Estimated boiler power calculation for the climatic conditions of Ukraine (1 kW / 10 sq. m).

Warranty period - 2 years.