The Reason Adjustable Air Vents Were Developed

摘要

Over this past winter, I was called on to look at a one-pipe steam system. The homeowner was complaining that his steam system was operating inconsistently since the new boiler was installed. The primary complaint was that certain radiators just wouldn't heat while others were heating fine. The only way he could get the "cold" radiators hot was to turn the thermostat way up. Naturally, the rooms with the "good" radiators became hotter than a steam room. As we walked through the house, we checked out all the radiators and their vents and then into the basement to find the main vents. As I was doing this, I couldn't help but remember the name of a book, Audels Oil Burner Guide, which was published in 1946. In the book, there was a chapter dedicated to the subject of converting a coal-fired, one-pipe steam system over to oil. The chapter stressed how much more important it was to vent the air from the system when it was converted to oil than when it was coal fired.