Product Name: Non-Pressure Solar Water Heater (ST Series) Model NO.: ST Certification: CE, ISO9001, CCC, SABS Collector Components: Glass Vacuum Tube Interior Material: Stainless Steel Pressure: Unpressurized Structure: Compact Type Assistant Tank Is Optional: 5L Electric Heater Is Optional: 1500W or 2000W Controller Is Optional: Tk-8A Can Feeding Water Automatic Trademark: Suntask Transport Package: Cartons /Wooden Pellet /Wooden Box Specification: ISO, CE, SABS Origin: Zhejiang, China HS Code: 8419191000 Product Description Non-Pressure Solar Water Heater (ST Series)Suntask Non-pressure Solar water heater design uses evacuated tube and advanced heat retention technology, providing rich hot water. SPECIFICATIONS1. Designed for South Africa2. Inner tank: SUS304 Stainless Steel, 0.4mm3. Outer tank: PVDF 0.4mm4. frame: Galvanized steel, 1.5mm5. Capacity: 150-360L6. Heat preservation: 60-72h7. Hail resistance: 25mmNon-pressure solar water heater optional accessories1. Assistant tank: 5L2. Controller: TK-8A Can Feeding Water Automatic3. Electrical heater: 1.5 /2 KWWORKING PRINCIPLE1. Solar water heater system of all glass evacuated tube collector integrated with storage tank, are ideal for use in houses and other applications where cheap, reliable hot water supply is required. They are simple, economic and practical. 2. As the specific gravities of hot water and cold water are different, cold water goes downward and hot water goes upward. 3. When cold water in evacuated tubes is heated, it becomes lighter and goes to the water tank, while cold water in the tank goes down to the evacuated tubes4. Through this circulation, the cold water in the water tank will be gradually heated. FEATURESuper Anti-erode outer tank: Outer tank is made by PVDF. Best anti-erode material. Especially for the seaside area, such as East South Asia etc. Feeding water automatic: With special design, feeding water automatic, and ensure the outlet water as stable temperature. 1. Cheap and reliable solution, Simple structure, Easy installation2. High efficiency3. Withstands water pressure no more than 0.1MPa4. Operated without any power supplying5. Electric heater can be used as back up in rainy days6. Hot water can be used directly, or can be used as a pre-heatedStorageTankInnerTankSUS304-2BfoodgradestainlesssteelInnerTankThickness0.4mmOuterTankPVDF0.4mmwhichisgoodatanticorrosionInsulatingLayerPolyurethanceFoam50mmVacuumTubeMaterialoftheglasstubeBorosilicateglassAbsorptiveCoatingGradeALN/AIN-SS/CULengthofOuterTube1800mmLengthofInnerTube1755mmOuterTubeDiameter58mmInnerTubeDiameter47mmGlassThickness1.6mmDistancebetweentwotubes75mmThermalExpension3.3*10-6/ º CAbsorptioncoefficient95 ± 1%Thermalemsisioncoefficient5 ± 1%VacuumP ≤ 5.0*10-3PaStagnationTemperature>200 ° CAverageheatloss<0.8w/m2. ° CMaximumstrength0.8MpaResisthailstoneΦ 25mmResistwind30m/sSupportframeMaterialGalvanizedSteelThickness1.5mmAngle45 ° /38 ° /25 °Lifetime15years