... station or controller Split Solar Water Heater With Double Copper CoilFeature: 1. Simple Installation, No Maintenance, ... or gas Back Up.7. Double-walled Copper Coil heat exchangers in storage tank prevent contamination ... L)Heat pipe LightingincludeDiameterLength (mm)No.SHCLS200D200581800203.43Copper coil, Storage tank, work station, collector, circular ... Solar Water Heater With Double Copper Coil