Stratified buffer tank with coil Wolf SE-2-400 silver color 8908580

Application and Tank Construction

This device is dedicated to domestic hot water (DHW) installations where stable water temperature and availability in large quantities are critical. Thanks to a capacity of 400 liters, this model is suitable for facilities with medium and high hot water demand, such as single-family homes with a larger number of occupants or small service establishments. The construction based on steel ensures the mechanical strength necessary for operation under pressure, while the insulation made of rigid polyurethane foam surrounds the tank on all sides. This solution minimizes heat losses, directly translating into lower operating costs and maintaining water temperature for longer periods without continuous operation of the heat source.

Anti-Corrosion Protection and Heat Exchange Efficiency

One of the most important aspects of this tank's longevity is the internal wall protection system. The manufacturer has applied a double layer of enamel, which serves as the first barrier against corrosion, additionally supported by a magnesium sacrificial anode. This anode acts as a sacrificial element, protecting the steel from rusting even in water with unfavorable chemical composition. Inside, there is also a heating coil, which is positioned low and double-enamelled. Such placement allows for rapid water heating, and its construction guarantees high continuous efficiency – which is important when working with condensing boilers or heat pumps that operate more efficiently under constant load.

Mounting Functionality and Operational Parameters

For the installer, the possibility of expanding the system with an additional heat source is important. The tank is equipped with a dedicated connection for an additional electric heater, providing flexibility in emergency situations or during seasonal increases in energy demand. An inspection opening is also available, facilitating control of the internal technical condition and cleaning the tank from sediments – these actions are crucial for maintaining the device's functionality over the years. The external casing in silver-grey color not only gives the device a modern appearance but also protects the insulation from mechanical damage during transport and installation. The device achieves energy efficiency class C, confirming its rational energy consumption compared to older models without insulation or with inferior materials.

It is worth paying attention to several key elements affecting the daily operation of the device:

• Large capacity of 400 l allows serving multiple water draw-off points simultaneously without significant temperature drop.
• Protection system consisting of double enamel and magnesium anode significantly extends the tank's lifespan, even in cases of water hardness deviating from the norm.
• Low-positioned coil ensures rapid water heating and high continuous efficiency, promoting efficient operation of modern heat sources.
• Thick layer of polyurethane insulation effectively retains heat inside the tank, reducing energy losses during boiler standstill.
• Application of heater connection provides the possibility of emergency water reheating or heating during summer periods without the need to start the main heat source.