Tower Biwal

Bivalent heat exchanger with two spiral coils - SGW(S)B

• It obtains heat from renewable solar energy.
• It works with optimal performance all year round.
• Powered by two coils, upper and lower.
• Up to 50% longer lifetime thanks to RESIST-TECH® protection.
• The highest quality ceramic enamel EXTRA GLASS.®
• Possibility of mounting an insulated GE electrical set.
• Maintenance-free, active titanium anode, optional.
• Capacity: 200 litres.

Tower Biwal is the first of a series of unique bivalent heat exchangers, with two spiral coils, allowing maximum use of power supply from several heat sources at the same time. Its capacity of up to 200 liters makes it suitable for use in both single-family houses and large public buildings.

Renewable Power

Renewable solar energy is a source of free and clean heat available all year round. Used for heating, it allows for a significant reduction in the cost of providing domestic hot water. The design of the Tower Biwal enables maximum use of this clean energy. The heat obtained by solar collectors is transferred to the utility water through a spiral coil dedicated to solar collectors. Placing it in the lower part of the tank allowed to ensure the operation of the exchanger with the highest efficiency. The work of the lower coil can be supported by a coil placed above it, powered by a central heating boiler. This shortens the time of water heating, especially when there is a high demand for domestic hot water. In parallel, an insulated, electric GE heating set or a heater set on the flange, installed in the inspection hole, can also operate.

Convenient installation

The concentration of all hydraulic connections at the back of the exchanger significantly facilitates assembly and at the same time ensures an aesthetic appearance and convenient use of the installation. In the rear part there are also enabling the installation of a temperature sensor from the central heating boiler and a circulation pump. Its use allows for immediate intake of water, which has a constant temperature, at every point of the installation. In the front part, at eye level, the exchanger has a clear thermometer to facilitate supervision of the installation.

Proven insulation

A significant advantage of Tower Biwal bivalent heat exchangers is the long maintenance of water temperature, which guarantees comfort of use and low operating costs. This is due to the use of a patented tank insulation system. Tower Biwal is offered in three types of efficient insulation: fixed or dismountable for easy handling and installation of a high-capacity exchanger.

Anti-corrosion protection

The guarantee of safe use of hot water exchangers is to ensure the highest quality of anti-corrosion protection. The EXTRA GLASS® enamel used in Tower Biwal hot water exchangers is ceramic enamel applied using the "wet" method, evenly  over the entire surface of the exchanger. In addition, supported by two magnesium anodes ensures hygienic use of the tank. Magnesium anodes can be replaced with an active titanium anode, which does not require replacement.

"Thanks to the RESIST-TECH® protection, the service life of tanks with electric heater is extended by up to 50%.

A special resistor equalizes the electromagnetic potentials  between the magnesium anode and the electric heater."

Guaranteed quality

The best raw materials, advanced production technology and qualified staff guarantee the highest quality at every stage of Tower Biwal heat exchanger production. This allows you to offer users a 60-month warranty (details in the warranty card).

Specifications:

Storage capacity: 197 l.

ErP energy efficiency class - polyurethane foam: B

.max. tank operating temperature: 95 °C

.max. heat exchanger operating temperature: 110 °C

.max. tank working pressure: 1 MPa

.max. exchanger working pressure: 1.6 MPa

Exchanger area for solar collector: 1 m²

heat exchanger power to solar collector (70/10/45°C): 24kW

heat exchanger capacity for solar collector (70/10/45°C): 570 l/h

central heating exchanger area: 0,7 m²

Magnesium anode top: 38x400 (top bottom cork 5/4") mm (thread)

lower magnesium anode: 38x200 (inspection hole, screw M8) mm