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Posted by Phil on October 16, 2004 at 12:00:44:
In Reply to: Re: Vaillant Ecomax combi kettling posted by HeatPro on October 15, 2004 at 17:10:28:
: Rattling is usually steam bubbles produced by slowed water flow. Look for obstructions or trapped air in the lines that
: slows the water flow.
Thanks for reply. i agree, and i can only assume there is air trapped in the heat exchanger, having checked everything else. unfortunately the heat exchanger is the highest point of the boiler with no vent above it (there is an auto vent well below it on the pump). Any further suggestions ?
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