• Boiler with increased thermal insulation with a thickness of 80 mm.
• CS selective flat collector with aluminum absorber coated with PVD high quality selective coating.
• Triple ultrasonic welding – a unique and innovative technology allowing high efficiency, long-term stability of the collector.
• Heat-tempered, prismatic, transmitting maximum amount of solar radiation, anti-reflective glass.
• Non-freezing heat transfer fluid / propylene glycol / between the collector and the coil of the boiler.