supply times article

ken D

"And this is how that undersized boiler managed to heat the building for all those years. It came on and ran for a long time. During that time, the people who were in the rooms furthest from the boiler noticed that their radiators weren’t getting hot as quickly as the radiators in the rooms that were closer to the boiler. This is because the system has the ability to condense more steam (on start-up) than the boiler can produce. And the problem is especially noticeable during the spring and the fall because this is when the weather isn’t as severe. The system starts and stops more often. The pipes don’t stay as hot as they do during the winter.
Someone in the building decides to move the thermostat to the coldest room. That allows the burner to run even longer. This, of course, wastes fuel because the people with the hot radiators will open their windows. And as the burner runs longer, the steam eventually manages to heat all the piping. "

Why would the people with the hot steam open their windows, seeing there will be steam in them all the time anyway when the boiler is decided to be turned on to make steam? Or is this talking about mildly cold weather when you only need a little heat, but those farthest away havent gotten any heat to them yet? But once the steam fills the building on that mild day, won't everyone be opening their windows? Do T-stats keep steam from entering the radiators when there is no call for heat? The steam all turns to condensate and cools inside the radiator when there is no call? Why open windows if the T-stat stops the steam from entering the radiator then? -conduction?

Just curious