Question about Air Conditioners
That clicking and knocking noise you hear is called cavitation. It's when the bubbles of steam are cooled down rapidly and implode upon themselves. Cavitation is not a good thing to have in a boiler as it can cause dramas. This cavitation is more than likely because the boiler is firing too hot. A service technician should be called to turn the regulator down a little bit.
Posted on Sep 18, 2008
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