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Central heating - thermostat and trvs
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11-08-2012, 05:22 PM
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gIzzE
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Quote:
Originally Posted by
briers
It's a sealed/unvented system too - but I think there is air in there as boiler water makes trickling noise
Thanks
Sure it is not just crap in the heat exchange?
You put any cleaner in it??
Appreciate
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