Banging in the expansion tank


  #1  
Old 10-31-06, 10:15 AM
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Banging in the expansion tank

I have drained my expansion tank and let it fill back up. Now when I turn on the boiler after a few minutes there is some horrible banging in the expansion tank and then the boiler shuts down. The banging continues for a few minutes and then the boiler will not start back up until it cools down. any ideas what may be causing this?
 
  #2  
Old 10-31-06, 04:23 PM
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Banging

What is the pressure on the system? Does it bang with the thermostat turned up? You may have gotten some air in the boiler.
 
 

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