I read that same thing in my installation manual, but was confused as to how I was supposed to remove the panels from the roof. Afterall, I have 3" lag bolts going thru my roof holding the straps down that hold the panels in place.
Am I supposed to remove the straps each year to get the panels down??

The other thing, I called the companies helpline when I was installing the panels. They told me that as long as I had the IG panels and had a slope on the panels of at least 1" for every 10' of panel, all I need to winterize them is pull off the inlet plumbing line to the panel, let it drain, and I am good to go. I don't need to take the panels inside. The lady told me if I had AG panels I would need to store them inside.

I don't understand this.