Hi all,
I have an open vented pumped system, the boiler and HW cylinder were installed october 2009.
I have recently drained down my system and replaced a radiator as the old one had seen better days.
I have refilled and bled the system, no more air seems to be in the system.
However when I turn the heating on either by the programmer or when the stat calls for heat I get gurgling noises from the boiler, like water is being poured down the pipes to the boiler. But only for the first 5 or 10 seconds then it stops. When you turn the boiler off you hear another noise which sounds like a bubble of air going back up the pipe from the boiler.
I thought it may still be air, so I have had the system on and bled several times and occasionally get a very small amount of air out of the bathroom rad upstairs.
The noise is still there. I checked the expansion tank in the loft and this has water in it. I did notice that when the boiler is switched off the pump stops but about a cup full of water gets pushed up the vent pipe and in to the F & E tank. Is this normal?
The boiler makes these noises evertime it is switched on and off.
I don't know what else to try. Appolgies for the long post.
Any ideas appreciated.
Cheers
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I have an open vented pumped system, the boiler and HW cylinder were installed october 2009.
I have recently drained down my system and replaced a radiator as the old one had seen better days.
I have refilled and bled the system, no more air seems to be in the system.
However when I turn the heating on either by the programmer or when the stat calls for heat I get gurgling noises from the boiler, like water is being poured down the pipes to the boiler. But only for the first 5 or 10 seconds then it stops. When you turn the boiler off you hear another noise which sounds like a bubble of air going back up the pipe from the boiler.
I thought it may still be air, so I have had the system on and bled several times and occasionally get a very small amount of air out of the bathroom rad upstairs.
The noise is still there. I checked the expansion tank in the loft and this has water in it. I did notice that when the boiler is switched off the pump stops but about a cup full of water gets pushed up the vent pipe and in to the F & E tank. Is this normal?
The boiler makes these noises evertime it is switched on and off.
I don't know what else to try. Appolgies for the long post.
Any ideas appreciated.
Cheers
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