MARSZ

Setting at 7 degrees will cause the circulation pump to operate more frequently. If the collector is close to the geyser, this should provide the best heating. If the pipe runs are long and poorly insulated, rather let the water go to 15 degrees.

There is this thing about American law. That's if I even get it. If I sell something to you, and it doesn't work, it's my fault, and you can sue me. If however I sell you the PLANS (blue prints, etc), an it doesn't work... then it is YOUR fault. So every one of these scams work by not selling you a product but instead selling you the plan. The marketing material always have this huge emotional angle to it, or sometimes it will do the old spiel blaming the oil companies (you know, they don't WANT you to know, it's a conspiracy you see!), and then right at the end there will be this thin bit about how it works. Sick of it. HHO and engines running on water and fuel saver devices and charge pumps pretending to generate energy out of thin air...