1. Reliable, efficient, evacuated tubes 2. Copper heat pipes for rapid heat transfer 3. Easy plug-in installation 4. Maintenance Free 5. Suitable for mains pressure water (working pressure: 0.6MPa) 6. Corrosion resistant copper header 7. All stainless steel frame and manifold cover (SUS304 food grade Stainless Steel) 8. Stable solar conversion throughout the day 9. The perfect solar collector for domestic solar water heater systems 10. Ideal for commercial solar water heating applications The operation of the Suunny solar collector is very simple. 1. Solar Absorption: Solar radiation is absorbed by the solar tubes and converted into heat. 2. Solar Heat Transfer: Heat pipes conduct the heat from within the solar tube up to the header pipe. 3. Solar Energy Storage: Water is circulated through the header, via intermittent pump cycling. Each time the water circulates through the header the temperature is raised by 5-10oC / 9-18oF. Throughout the day, the water in the storage tank is gradually heated. Specification: Suunny Solar Collector General Specifications Manifold Casing Material aluminium Frame Material aluminium Header Pipe Material C12200 Copper Insulation Polyurethane foam Rubber Seals and Rings Stabilized high temperature silicone rubber Optimal installation angle 30-70 degree Vertical, 0 Horizontal Maximum Operating Pressure 0.6—0.8 MPa Optimal flow rate 0.1L/min/tube - 0.026G/min/tube Model: Tube length Tubes no Stadard Sunlight absorb area Thickess Shape size (mm) m2 mm (mm) ?58X1800 15 1.95 50 1225x1960x110 18 2.34 50 1450x1960x110 20 2.74 50 1600x1960x110 24 3.14 50 1900x1960x110 30 3.64 50 2350x1960x110