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Old 01-21-2012, 11:50 PM   #16
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Steam radiator issue...


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Originally Posted by paul52446m View Post
What is a basic adjustable vents? In the top of the radiator is a steam air vent, is that what you are saying you replaced? It would not be adjustable. Do you have balancing valves where the pipe enters the radiator? Is the diagram that i am looking at , your system. Paul
OK to paul; a very ciommon Hoffman radiator vent is indeed adjustable.
There is also a Main Vent in the basement near the boiler most likely.
Without a doubt the most common problem I ever had on steam boilers was vent problems.
The next most common problem I ran into was the pressuretrol and the pigtail the pressuretol was attached to.those pigtails get plugged up and cause pressure problems.
If she was hearing noise like someone was hitting the pipes with a wrench,then leveling the radiators make sense otherwise better to leave them alone.
Now I dopn't have a vent to check,but I think one of the settings was off.Someone should make sure the adjustable vent is open to the first opening.If thats not the problem then dollars to doughnuts its the pig tail or the pressuretrol.They are not so good after 25 years.
After that it could be the waterfeed and low water in the boiler.If that hasn't been cleaned in 20 years its going to be a solid piece of scale and weigh a ton..
Steam systems are really great systems but they do require a lot of maintainance to keep them in tip top shape.

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Old 01-22-2012, 12:17 AM   #17
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Steam radiator issue...


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OK to paul; a very ciommon Hoffman radiator vent is indeed adjustable.
There is also a Main Vent in the basement near the boiler most likely.
Without a doubt the most common problem I ever had on steam boilers was vent problems.
The next most common problem I ran into was the pressuretrol and the pigtail the pressuretol was attached to.those pigtails get plugged up and cause pressure problems.
If she was hearing noise like someone was hitting the pipes with a wrench,then leveling the radiators make sense otherwise better to leave them alone.
Now I dopn't have a vent to check,but I think one of the settings was off.Someone should make sure the adjustable vent is open to the first opening.If thats not the problem then dollars to doughnuts its the pig tail or the pressuretrol.They are not so good after 25 years.
After that it could be the waterfeed and low water in the boiler.If that hasn't been cleaned in 20 years its going to be a solid piece of scale and weigh a ton..
Steam systems are really great systems but they do require a lot of maintainance to keep them in tip top shape.
I use to replace a lot of steam air vents, but i did not know they made one that you could adjust. I have seen those siphorns plug up and make the pressure go too hi. Most of my work on steam was on 1 to 3 million BTU and some hi pressure steam like in dry-cleaners shops I have not done to much house hold steam heat. Paul
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Old 01-22-2012, 12:22 AM   #18
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Steam radiator issue...


Hashaha.I worked for 30 plus years and until the day I retired I kept leaning things that I should have known earlier.Whoever said never say never must have worked in our field.
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Old 01-24-2012, 05:42 AM   #19
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Steam radiator issue...


If the radiator valve is fully open but you still have no heat coming from it, it may be a problem with your steam vent. If your steam vent is clear and you valve is fully open, the cold steam radiator problem could be the result of something different entirely.

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