When the water temperature exceeds 212°F (100°C), the water will remain a liquid inside the tank, but when the pressure is released as the water comes out the tap the water will boil, potentially inflicting steam burns. Water above about 190°F (88°C) will cause burns on contact. ...
For water return, I decided to route the pipes back up the side, over the top of the tub, and down below the water line. Theoretically I could have drilled through my cedar and insulation and passed the piping through another bulkhead fitting back into the tub. For this build however, I...