Description:Non-Pressure Solar Water Heater with Assistant tankSpecification:1. Inner tank material: SUS304/2B, 0.41mm2. Outer tank material: Stainless Steel or Galvanized Steel3. Frame material: Stainless steel or Galvanized Steel4. Heat insulating layer: 50mm polyurethane foaming5. Size of inner tank ?360mm, Size of outer tank ?460mm6. Heat preservation: 72 hours7. Hail resistance: 20-30mm8. Standard pressure: 0.06 Mpa9. Seal: silicone rubber polymer10. Temperature heat: 45-95 degree CelsiusSpecial Features Provided In The SystemSystem Dry Run Protection, System High-Pressure Protection, System Extreme High-Temperature Protection, System Evacuation Protection.With the help of the Assistant tank, the system can feed water automatically and make sure the tank with full water all the time.Sacrificial Anode-of-Magnesium, Electrical BackupTechnical Data SheetModelTube SpecificationTubeGross AbsorberCapacitySize (mm)CoatingArea( M2)ABCDSFL-NP58/1800-8? 58x1800*8PcsALN-AIN-SS/CU1.3680 L85565515501600SFL-NP58/1800-10? 58x1800*10PcsALN-AIN-SS/CU1.70100 L100580515501600SFL-NP58/1800-12? 58x1800*12PcsALN-AIN-SS/CU2.04120 L115595515501600SFL-NP58/1800-15? 58x1800*15PcsALN-AIN-SS/CU2.55150 L1380118015501600SFL-NP58/1800-18? 58x1800*18PcsALN-AIN-SS/CU3.06180 L1610141015501600SFL-NP58/1800-20? 58x1800*20PcsALN-AIN-SS/CU3.40200 L1760156015501600SFL-NP58/1800-24? 58x1800*24PcsALN-AIN-SS/CU4.08240 L2060186015501600SFL-NP58/1800-25? 58x1800*25PcsALN-AIN-SS/CU4.25250 L2135193515501600SFL-NP58/1800-30? 58x1800*30PcsALN-AIN-SS/CU5.10300 L2510231015501600(The above data for reference only) http://www.jxsunfly.com/solar-w...r-water-heater-with.html