Indirectly heated storage tank for the production of domestic hot water, the heat exchanger is designed for the connection of a wall heater, but it can also be connected to a heated buffer tank and a solar system. The UNO-S series, which is available from 80 liters to 200 liters, does not currently include an electric heating element or the required threaded connection.

The tank has a cleaning flange on which it can be made the periodic maintenance. The internal protection of the tank is provided by a high-quality ceramic enamel coating. The insulation is provided by a closed-cell flexible polyurethane foam. About cathode protection in storage magnesium anode is provided.

The internal heat exchanger is fixed (welded) coil which are enamelled together with the tank.

The maximum permissible operating pressure of the tank is 6 bar, the heat exchanger can be used with a maximum pressure of 10 bar. Its maximum operating temperature is 85°C.