Boiler pressure


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Old 12-02-06, 04:46 AM
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Cool Boiler pressure

Can anyone help?

I have a combo oil fired and wood burning furnance, approx 27 years old, I notice that pressure is constantly building past 30#. I always need to open the relief valve to let some pressure out. Question is on the expansion tank behind the boiler when I press in the pin in the valve, should water or air come out? I suspect that this is my problem.

Thanks
Rick
 

Last edited by boilerissue; 12-02-06 at 05:22 AM.
  #2  
Old 12-02-06, 12:30 PM
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Exp. Tank

You should get air out of the schrader. If you get water, the tank needs to be replaced.
 
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Old 12-02-06, 12:40 PM
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Could there be an issue with the PRV also ? If it were just the tank waterlogged, I wouldn't think you would need to constantly be letting out pressure. Sounds like you might have two problems ?
 
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Old 12-03-06, 03:42 AM
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pressure

Pressure relief valve I did change at first, since I thought that was faulty. Come to find out my expansion tank was water logged. ( Boy was that sucker heavy). Also, changed the water relief valve ( valve that controls water coming into the boiler) which was loaded with crud. Now I am good as new, got the wood fire going in the furnance and maintaining constant pressure at 15-18 lbs.

Thanks for your response.

Rick
 
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Old 12-03-06, 06:58 AM
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Thumbs up Good Work

Those tanks can be surprisingly heavy & really fool you if you're not prepared. Glad you got it fixed.
 
 

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