The Helios Fans WHR 2÷100÷50 is a warm water heater battery designed for duct systems, featuring flanges on both sides for secure installation. The housing is made from durable galvanised sheet steel, ensuring long-term corrosion resistance. The internal heat exchanger is equipped with copper pipes and aluminium fins to deliver effective heat transfer. This unit supports a maximum operating temperature of 120 °C and can withstand pressures up to 8 bar. The water connections are fitted with external threads for straightforward and reliable integration into heating systems.