I have to install a washer on the second floor of a new home we purchased. I'm comfortable with the water lines, but I'm not 100% clear on the drain line and don't want to make a mistake.
There's an elbow joint on the floor behind the washer spot. I've got no idea what it is for. Then there's the hole next to the intake lines. Every tutorial/video I've watched says the hole in the wall for the drain line. What is the pipe on the floor for and does the drain line definitely run to the hole next to the water supply lines?