... heaterProduct introductionThe split flat plate system contains solar flat plate collector, storage water tank, pump station with controller ... regulation. The anti-freeze liquid as heat-transfer liquid between solar collectors and water tank. This system can be combined ... electic heater.Size: 150L, 200L, 250L, 300L, 400L, 500L with single coil or double coils inside tank.Specification:1) 150L system ...