Hi I just came across this posting after inputting the make and model number of a solar water heater into a search engine. My son has bought a house and it is a total demo. We are doing the gutting ourselves. I am totally unfamilar with this type of system. I have cut the electrical power and turned off the water to the solar tank. Is there anything else that I need to do before taking it apart. How do I dismantle the system with the freon still contained. Any help would be greatly appreciated as I am new to this type of system. Thanks Paul