1.Header pipe thickness: 1.0mm2.Manifold thickness:1.0mm3.Frame material:and thickness: aluminium alloy/2.75mm4.Insulation:polyurethane foam& allumiumum silicate5.Thickness of insulation: 35mm (polyurethane)6.Optimal installtion angle: 30-70 degree7.Operating pressure: 6 bar8.Working temperature:30-270 centidegrees9.Starting speed: 2 min10.Lifespan: > 15 years11. Diameter and length of upper copper coil: 12mm/14m12. Diameter and length of nether copper coil: 12mm/20mFeatures:1) It can withstand pressure of tap water when it works2) There is no need to wait and hot water is available immediately3) Completely automatic operation under control of working station4) Drinking water quality to promote life quality