Bivalent heat exchanger 300l SGW(S)B TOWER BIWAL with two spiral coils, enameled, rigid polyurethane foam, skay, vertical freestanding 26-309000N

Bivalent heat exchanger for efficient water heating

Tower Biwal SGW(S)B is a high-quality DHW heat exchanger with a capacity of 300 liters, designed to work with various heat sources – from central heating boilers, through solar collectors, to heat pumps. The dual-coil design allows for maximum utilization of available energy and ensures comfortable domestic hot water throughout the year. The tank is made of steel and coated with EXTRA GLASS® ceramic enamel, which guarantees durability and corrosion resistance. Insulation made of rigid polyurethane foam minimizes heat loss, and the skay casing provides an aesthetic appearance.

Universal application and efficiency

This heat exchanger is an ideal solution for both installers and end-users looking for an efficient and reliable water heating system. Two spiral coils – upper and lower – allow for optimal use of energy from different sources. The lower coil is dedicated to solar collectors, and the upper can be powered by a central heating boiler, which shortens the water heating time, especially with high demand. The possibility of mounting an electric heating element further increases the functionality of the device.

Construction and safety

The construction of the Tower Biwal heat exchanger has been designed for easy installation and maintenance. All hydraulic connections are located at the back of the device, which facilitates installation and ensures an aesthetic appearance. The inner surface of the tank is covered with EXTRA GLASS® ceramic enamel, which provides high resistance to corrosion and hygiene of use. Additional protection is provided by a magnesium (or optionally titanium) anode, protecting against cathodic corrosion. The use of a patented tank insulation system ensures long-term maintenance of water temperature and minimizes energy losses.

• Two spiral coils: allow cooperation with many heat sources (central heating boiler, solar collectors).

• EXTRA GLASS® ceramic enamel: ensures durability and resistance to internal corrosion of the tank.

• High-quality insulation: minimizes heat loss and reduces operating costs.

• Easy installation: all hydraulic connections located at the back of the device.

• Possibility of mounting an electric heater: increases the functionality of the device in the event of a failure of the main heat source or the need for quick water heating.

• Magnesium/titanium anode: additional protection against cathodic corrosion.

• Capacity of 300 liters: suitable for larger families or households with increased demand for domestic hot water.

The heat exchanger is characterized by a capacity of 299 liters, the surface area of the solar collector coil is 1.4 m², and the surface area of the central heating coil is 1.1 m². The maximum operating temperature of the tank is 95°C, and the maximum operating pressure of the tank is 1 MPa.