Do I need a separate plumbing system for the solar water heater?
There is NO need for a separate plumbing system when you install a solar water heater. Your installation technician will be able to guide you during this process; the only plumbing needed is the one connecting the cold water entrance of the boiler to the main water supply line, and the hot water exit of the boiler to the heat pipes of your home (remember to insulate them).
The closed circuit pipes are provided with the solar water system and run independently from your home’s water pipes.