... installation, energy-saves 3,competitive price compacte non-pressuriced solar system One pipe inlet-outlet on the water tank,and two ... : 12, 15, 18, 20, 24, 30, 36tubes 7) Capacity: 100-360 liters Solar water heater Remark: 1. Solar heat storage tank ... tank, controller and electrical heater.Warranty: 3 years for full system / 15 years for vacuum tubeLead time: Within 2 weeks for ...