Usage 2-20-2011

It's been a couple weeks and you can see from the graphs, even in February, it makes hot water. I get the numbers from the controller screen, which I log each day. A project for later on will be to instrument the controller...it has a RS485 bus that can be hooked to my computer. The anomale on the 17th was due to a mistake during install where the collector feeds got swapped so the cold water was feeding from the top.....yes, it obviously makes a difference. This was due to a blind run of tubing in the attic and they got mixed up. It was cloudy that day and not obvious when we turned the system on.....but easy to detect once the sun came out.

From Solar Water Heater Data