Back boiler


  #1  
Old 11-17-05, 10:31 AM
devil14772
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Back boiler

The air lock that keeps my domestic and centeral heating water apart has burst. Do I need to empty the whole tank or just bleed the system through a radiator.
 
  #2  
Old 11-17-05, 06:31 PM
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Question Air Lock????????

I'm sorry, I don't know what you mean by "air lock". Do you mean the bladder in the expansion tank? Is the boiler going over pressure?
 
  #3  
Old 11-30-05, 08:56 AM
jockademus
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Just joined the forum and hopefully you can help with my back boiler problem. When the boiler goes off (temp reached) the boiler makes a lot of bubbling noises before settling down.

Is this something to do with pressure as you asked previuosly?
 
  #4  
Old 11-30-05, 07:29 PM
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Bubbling noise

Bubbling (boiling) noises are common in dry base boilers & is caused by deposits in the waterways thus causing hot spots. Sometimes a chemical treatment will help, sometimes not.
 
  #5  
Old 12-01-05, 12:15 AM
jockademus
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So this is nothing to do with air in the system? The radiators also don't get as hot as they should?
 
  #6  
Old 12-01-05, 06:11 PM
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Air?

Have you tried to bleed the radiators? Do you get water out of the bleeder on each radiator in a steady stream?
 
 

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