Update: was "Y-Plan vented heating - Banging from the boiler"
Thanks to all those that replied. Just to feedback my experience:
Flushed the system, which to be fair didn't seem that bad - a murky greenish tinge to the water, but eventually ran clear. Replaced the pump as a possible solution suggested by Roger Mills, now all works fine. (also took the opportunity to replace the (awful) ball valves with gate values) Tomorrow, when I can find the inclination, it gets a Fernox de-sludge treatment, and after that's complete it's getting its yearly dose of inhibiter. Thanks to all. |
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