... Solar Water Heater relies on warm water rising, a phenomenon known as natural convection, to circulate water through the collectors and the tank ... planning during installation because the water tanks are heavy. Compact Solar Water Heater move household water or a heat-transfer ... tank: Diameter 450mm, with capacity of 220L, 280L, 330L7) Collecting area: 4.7-6.9m2 are available GS solar water heater