Air in Hot Water System


  #1  
Old 04-24-05, 11:48 AM
asjhunter
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Air in Hot Water System

I have a 14 month old Baxi heating and hot water system. The central heating is fine, with the odd build up of air which I drain from the radiators every now and again. However, I have air in the hot water system, which after 5 minutes or so of being on can be heard in the pipes bubbling around. The thermostat is not set too high. I have 3 air release valves on the system. Could it be a pump problem? Where else might it come from?
 
  #2  
Old 04-25-05, 01:25 PM
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Air in hot water system

Is this the domestic hot water or the heating loop(s)?
All water contains dissolved gasses which come out of solution when heated. If the air is in the heating loop(s), you are probably feeding fresh water. That means you have a leak somewhere. It needs to be located & repaired. Oxygen in a heating system is a boiler killer.
 
 

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