Compact pre-heated solar water heater

Compact pre-heated solar water heater provides main pressure pre-heating via a highly effective copper coil heat exchanger located within the solar collector tank. Rather than using the water in the tank directly, as the non pressure does, this type uses a 45 to 60m copper coil. Heat exchanger inside the tank provides more than 1.5m² of heat transfer area. When water flows though the coil, it absorbs heat from the water inside the solar collector tank. The solar collector tank is therefore a thermal store. 1)Outer tank with white galvanized steel or Stainless steel SUS304 2)Inner tank with 0.5mm thickness food grade stainless steel SUS304-2B 3)Tower style stronger and modern frame 4)with assistant water tank and electrical heating element for optional 5)Use twins AL/N/AL coating brosolicate glass vacuum tube 6)Capacity from 120L to 300L 7)with five years warranty 8)High efficiency passed EN12976 performance testing