Central heating - thermostat and trvs
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11-08-2012, 07:22 PM
Drives: F25 X3, Merc C320 Sport Estate
Join Date: Apr 2006
Location: Norfolk, UK.
Originally Posted by
It's a sealed/unvented system too - but I think there is air in there as boiler water makes trickling noise
Sure it is not just crap in the heat exchange?
You put any cleaner in it??
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