Indirect water heater SGW(S)B Tower Biwal 250L class A, with two spiral heat exchangers, enameled, in polyurethane foam (Neodul) and skay casing 26-259800

Domestic Hot Water Heat Exchanger with Two Coils

This hot water heat exchanger from Galmet, model SGW(S)B Tower Biwal 250L, is a solid solution for preparing hot water in installations with a central heating boiler and those cooperating with solar collectors. Its construction with two spiral coils provides a large heat exchange surface and efficient water heating. A 250-liter tank is suitable for single-family homes and smaller commercial facilities.

Construction and materials

The heat exchanger is made of steel, coated with high-quality EXTRA GLASS® ceramic enamel, which guarantees corrosion resistance and long life. Additional corrosion protection is provided by a magnesium anode. Neodul polyurethane foam insulation minimizes heat loss, which translates into energy savings. The housing is made of skayu – a material resistant to mechanical damage and weather conditions.

Advantages and benefits

• Two spiral coils: Provide a large heat exchange surface, which translates into faster and more efficient water heating. Possibility of connecting to two independent heat sources (e.g., central heating boiler and solar collectors).
• High energy efficiency (class A): Reduces heat loss, lowering operating costs.
• Durable anti-corrosion protection: EXTRA GLASS® ceramic enamel and a magnesium anode protect the tank against corrosion, extending its life – even by 50% thanks to RESIST-TECH® technology.
• Neodul insulation: Reduces heat loss and maintains water temperature for longer.
• Versatility: Can be used in installations with various heat sources – central heating boilers, heat pumps, solar collectors.
• 250-liter capacity: Optimal capacity for households with moderate hot water demand.

Application

The SGW(S)B Tower Biwal 250L heat exchanger is ideal for:

• Single-family homes
• Apartments
• Small commercial facilities (e.g., offices, clinics)
• Installations powered by central heating boilers
• Solar systems supporting domestic hot water heating