Hello Dexxy.
It depends on what your current hot water setup is and how much you can/want to alter the existing plumbing.
I have a simlar collector heating a 120 gallon solar only tank via a heat exchanger which then feeds a 40 gallon electric tank that supplies hot water to our home.
You can see a slide presentation of the setup at this CNN iReport website.
http://www.ireport.com/docs/DOC-9941
Hope this helps, Art.
Lawrence, Michigan.
swmiwindnsolar