solar panels????

Its good to know that you have an otherwise safer system running now. I remember the first homemade solar water heater I built. I started the project thinking it would be marginal at best...
I had completed soldering all the copper pipe and I wanted to run a test on it before painting it black and closing it all up in its insulated, glass front box. The next morning I filled it with cold water and let it sit, flat on the saw horses in open air, not even painted black yet. It was summer time and a relatively cloudless day. By 1:30 pm the pressure had gone from 0 to 120 psi the temperature had changed from 58 degrees F to 140 degrees F. At the time I didn't know how I was going to regulate this and I new that once it was painted black, all boxed up, and on the roof aimed at the Sun, the temperature and pressure would be even higher. I had not anticipated that. I would need more storage. I would need more uses for hot water. I leanred from that; the necessity for, and how and why temperature differential controllers are used and why automatic T/P release valves are required equipment on water heater tanks. Most of all, I gained a greater respect for the power of our Sun.