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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Flushing Combi - Necessity
I've recently had an extension built with a new Glow Worm 30ci combi
boiler fitted. There is a little old pipework remaining and one small rad otherwise the system is new. My previous gravity system gave no trouble, apart from the occasional pump, it worked faultlessly but owing to a need for instant hot water I went for a combi. After 16 months the secondary heat exchanger failed, as I had not had the apparently mandatory service this was not covered by warranty so I had a very expensive repair. The service engineer said this was due to the system not being flushed as the heat exchanger was blocked. I am now led to believe that system flushing appears to be a necessary requirement for combis due to the design, how important is this flushing, I would have thought any modern boiler should have some filtering system to prevent fouling of the internals. Geoff Lane |
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