toilet
As far as I am concerned a wall hung toilet is the easiest one in the world to install. I would rather spend a day installing them than I would regular floor mounts. First you have to be sure that the bolts are projecting from the wall the proper amount for that toilet, and if not, adjust them to that point and then install nuts and washers on the two bottom bolts and the upper left one with the back of the washers against the wall. Put the gasket in the toilet, lift the toilet into place and spin the two upper finish nuts on the bolts to hold it. Then put the finish nuts on the lower bolts and tighten them until the toilet makes contact with the previously installed washers. Tighten the upper left bolt the same way and then spin the upper right one until it contacts the toilet and then turn it a quarter turn further, no more.