I have a bungalow with conventional CH system, with wall mounted gas boiler ( 3 yrs old ), but all other original plumbing from build.. approx. 1985.
BGas fitted new boiler some 3 yrs ago, with no circulation problems after. The hot water cylinder is the original 36x18 insulated copper, fed by adjacent pump and diverter valve.
Recently,I had to replace the bathroom radiator which was rusting on the outside, which meant draining the system. I have done this before and bled the system after as usual.
Since then, I daily get air bubbling from the hot water side, more noticeable if only hot water running. If the valve opens, then the bubbling gradually decreases as the air goes round the radiators .. until next time. I have to bleed the vent from the cylinder pipework each day, with no smelly gases... or water leaks.
I appreciate air could be getting in from the new radiator, but then why would the problem only occur on the hot water circuit. My suspicion is for some reason the tank coil has now decided to leak/fracture since the draining.. but I don't notice any sediment in the hot water to bath or sinks.
Any ideas please on how I prove the cylinder coil is faulty .. or not.
BGas fitted new boiler some 3 yrs ago, with no circulation problems after. The hot water cylinder is the original 36x18 insulated copper, fed by adjacent pump and diverter valve.
Recently,I had to replace the bathroom radiator which was rusting on the outside, which meant draining the system. I have done this before and bled the system after as usual.
Since then, I daily get air bubbling from the hot water side, more noticeable if only hot water running. If the valve opens, then the bubbling gradually decreases as the air goes round the radiators .. until next time. I have to bleed the vent from the cylinder pipework each day, with no smelly gases... or water leaks.
I appreciate air could be getting in from the new radiator, but then why would the problem only occur on the hot water circuit. My suspicion is for some reason the tank coil has now decided to leak/fracture since the draining.. but I don't notice any sediment in the hot water to bath or sinks.
Any ideas please on how I prove the cylinder coil is faulty .. or not.