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FERNOX technical information webpage Here is the link to that particular page on Boiler Noise: http://www.fernox.com/?cccpage=boiler_noise&sub=3 rubrub

Ha Ha - you've got to admit though - it's useful info for anyone who needs to know the 'science' bits. rubrub

BOILER NOISE Boiler manufacturers are required to design their appliances to meet the following modern requirements: · space saving · low cost · high efficiency As an almost inevitable result, the required amount of heat is passed through less heat exchanger metal than ever before in...

We've solved our problem! This is what we did: 1. Switch off central heating and hot water 2. Drain central heating system. 3. Fill and drain again until the water runs clear 4. Clean out the feed/expansion header tank in the loft 5. Add Fernox Restorer (500 ml – i.e. whole container) via...

Many thanks Tony, I'll give it a try. I'll let you know how it goes. Cheers rubrub

Hi Tony, Thanks for your reply. How do I go about either measuring the temperature diff across the boiler and what sort of differential should I be expecting for a normal boiler? Also, any suggestions on how to sort out the HW limited flow and scale? Thanks once again for your help rubrub

Hi there, Hope someone can help. I have the above boiler model. Recently, it has started making \\\'banging\\\' noises when it comes on. It is definitely coming from the boiler and not the pipes under the floor. The boiler is wall-hung against an outside wall. It is about 5 to 6 years old and...