Also, be sure you set the pressure on the relief valve so it relieves at the proper pressure. Out of the box, the valves can be randomly set. We didn't do this ahead of time last year, and when the inspector checked, it was set wrong.
That led to one of these conversations:
"Who was supposed to set the pressure?"
"Not us. I thought you were supposed to set it."
"We don't set it. I thought you guys set it."
