SYSTEM DESCRIPTION VISION VPF series solar water heater usually incorporates a number of high efficiency flat panels, a top situated high pressure hot water tank, supporting bracket and accessories. MAIN FEATURES Reliable collector with average daily efficiency over 54.1% High efficiency flat panels for fast direct water heating System works without high temperature problem High pressure hot water supply from storage tank Compatible with electric or gas heating devices Working all year round even in cold climate Designed for 25 years working life SPECIFICATION Tank capacity: 100; 150; 200; 250; 300 Liter Flat panel size: 2000*1060*82 MM ( L*W*H ) Cover glass: Low-iron tempered glass with transmittance =92% Absorber coating: Selective black chrome or blue TiNOX coating Header and riser: High-quality red TU1 copper tubes 22MM inlet outlet Frame material: Anodized aluminum alloy with anti-aging elastic sealing Inner tank material: Food-grade stainless steel SUS304-2B or SUS316L Tank insulation: High-density PU foam with 80 hour heat preservation Outer tank material: High-quality color steel or stainless steel Bracket material: Galvanized steel; stainless steel; aluminum alloy Accessories: Solar controller; electric heater; magnesium anode Bracket angle: 25°; 38°; 45° Working pressure: 6.0 bar Working life: 25 years