Steam heating system in an old house. Do I add water, and where?
Hey guys, we just bought a 1921 four square house. Brick, 2,144-square feet. The entire house is heated by a steam system. Below are photos of the unit. I've never used one of these before, but I understand water must be added manually on some. The seller mentioned that this one runs off of a water line in the house. The water is off at the moment pending some plumbing work in early January. Since I can't tell if the water must be on to operate this heating system, we've had the heat off, too. That's not ideal here in Ohio in Winter, we have space heaters all over the place to keep the house warm. Anyway, do I add water manually, and where? How much? I can't tell! The seller assumed it was connected to the water line, and implied that it should be left off when the water is shut off, but she's an elderly lady that didn't give me the impression that she knows much about the mechanics of the house. But I don't know much either!