The solar system operates at approximately half its capacity on cloudy days compared to sunny days. Nevertheless, the insulated tank keeps the water warm even in cold or cloudy conditions.

It is beneficial and support the hot water boiler as preheating system, also for underfloor heating and/or a heating swimming pool.

The modern solar storage system with evacuated tubes works in cold weather because of the evacuated tube technology. It can also heat the water in sub-zero temperatures when it is sunny.

What is the advantage of using vacuum tubes? Vacuum tubes are utilized because of their tubular shape, as they allow the sun to shine perpendicularly to the glass surface for most of the day. Evacuated tube creates a vacuum, thus reducing heat loss and minimizing the impact of wind and cold temperatures on the collector's efficiency.

In Europe, approximately 4 hours of sunlight are sufficient to increase the water temperature for bathing. As the storage tank is large and well-insulated, hot water remains available throughout the day.

In summer, each tube heats 10 liters of water on average to about 60 degrees Celsius and heats it up to 99 degrees Celsius before it evaporates. On sunny winter days, temperatures reach 45 degrees Celsius. These figures are based on average and empirical values.

Yes, the vacuum tubes are made of heat-resistant borosilicate glass and can withstand hailstones up to 2.5 cm in diameter.

The effect of calcification on the vacuum tubes is minimal because the calcification does not settle on the glass. This prevents blockages and the limescale sticks to the bottom of the tubes as wet salt, which is easily removed.

The surface of the vacuum tubes must be cleaned of dust with a sponge and water. The system requires internal maintenance every 2-3 years to remove any limescale deposits in the solar tank. This is a very simple process and does not require the use of chemicals. The lime is formed as a moist and non-adhesive salt.

The hot water tank is insulated with 5 cm thick thermal polyurethane insulation and can store hot water for three days.

The controller displays the temperature and level of the water in the storage tank. It also controls water refilling in the tank and prevents refilling while using hot water to keep the water temperature constant.

It ensures that cold water is not mixed with hot water during use and uses a mechanical float to stop the supply of cold water when the solar system is full.

In case of overheating, it is recommended to use the excess heat and hot water production in summer for pool heating. Otherwise, it is recommended to shade most of the surface of the solar panel.

Bacteria such as legionella are killed at temperatures above 60°C and it is common for the solar system tank to reach this temperature. In addition, the water in the solar tank is kept in constant motion by the sun heating, which prevents the formation of legionella.