... PED approved 2.OEM for solar water tank 3.Non-CFC Polyurethane insulation for solar water tank solar hot water tank1.CE,PED, CCC, ... water sylinder and solar station parts. ·On the top of the water tank, there are solar controller, water pump, expansion vessel,and relevant water ... connect the hydronic plus with the solar panels, and connect the sensors, then a solar water heater is ready.·This is ...