Overview Thermex IU 40 Thermex Ultraslim Thermex IU 30 V is a modern storage water heater with a narrow cylindrical shape, which is perfect for domestic use in urban environments. Due to the compact dimensions and narrow diameter of the tank, the water heater will find its place in any corner of the room, saving space as much as possible. Model characteristics The water heater has a steel casing, which is equipped with tubular "wet" type heating elements. The device is easily wall-mounted and has a power-on indicator. The boiler is controlled by a mechanical adjustment element located on the body. The maximum heating temperature reaches 75 degrees. In addition, the water heater is equipped with a magnesium anode, an important part in the internal system. It protects against scale and prevents corrosion of the tank walls. Overheating and overpressure protection automatically switches off the boiler, ensuring safe operation.