Hi, I have a Glowworm gravity fed back boiler, installed about 12 years ago. This replaced an old boiler of the same type so the pipes and radiators are quite old.
This new boiler and the old one of 25 years (only changed it to upgrade the fire front) worked fine until I had to replace a water tank in the loft last year (it then took weeks for the plumber to sort out an airlock in the system). A few months later I had TRV's fitted. Since then the boiler has got increasingly more noisy.....loud bangs and cracks we have to turn up the TV and nobody sleeps after the heating comes on. I had it serviced last month and the plumber said it was just expansion but surely once everything has expanded the noise stops!!!!!!!!! the only way to stop the racket is to switch it off.
When the system was drained to fit the new tank and TRV's both the plumbers added something like Fernox to the system which had never been done before in the 30 years of having back boilers is it possible this has dislodged sludge and scale which is now causing the kettling.
Can anyone help
Please.
This new boiler and the old one of 25 years (only changed it to upgrade the fire front) worked fine until I had to replace a water tank in the loft last year (it then took weeks for the plumber to sort out an airlock in the system). A few months later I had TRV's fitted. Since then the boiler has got increasingly more noisy.....loud bangs and cracks we have to turn up the TV and nobody sleeps after the heating comes on. I had it serviced last month and the plumber said it was just expansion but surely once everything has expanded the noise stops!!!!!!!!! the only way to stop the racket is to switch it off.
When the system was drained to fit the new tank and TRV's both the plumbers added something like Fernox to the system which had never been done before in the 30 years of having back boilers is it possible this has dislodged sludge and scale which is now causing the kettling.
Can anyone help
Please.
