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Hi, a bit of advice required.
I've been getting a lot of fast water flowing sounds from three radiators downstairs but not all and upstairs they are quiet, well most of the time. I've bled the system 3 times and also played around with the locks and balancing the system. I can make small improvements but not much. This system is running on a new Worcester Bosch CDI combi boiler.
Last night I noticed that if I opened two radiators upstairs in a room i usually don't heat the noise in the downstairs rads reduced by about 50%. If I closed the rads back off again using the TRV's the sounds came back. I played around opening these two rads in combination and one in particular makes the difference but I really need both open to make the big difference. Interestingly if I don't open the one which makes the big difference I can hear the gushing water sound in the other.
Why would opening a couple of rads upstairs (and only two in particular) cause the nouse in three rads downstairs to decrease ? I don't undersand how they can have that effect. Opening and closing any other rads upstairs has not effect at all. As far as I remember the pipes that came out of the boiler went in to the kitchen and then branched off two going along under floor to the lounge and feeding the downstairs rads and two staying at kitchen ceiling level going under the bathroom floor and feeing upstairs.
I should add I've been in the house 3yrs and the heating has always been fairly noisy and I recently had an extension fitted and a new CDI boiler fitted with a couple of extra rads downstairs. I had hoped this would have improved the noise but if anything it is worse.
Any idea's ?
Thanks
I've been getting a lot of fast water flowing sounds from three radiators downstairs but not all and upstairs they are quiet, well most of the time. I've bled the system 3 times and also played around with the locks and balancing the system. I can make small improvements but not much. This system is running on a new Worcester Bosch CDI combi boiler.
Last night I noticed that if I opened two radiators upstairs in a room i usually don't heat the noise in the downstairs rads reduced by about 50%. If I closed the rads back off again using the TRV's the sounds came back. I played around opening these two rads in combination and one in particular makes the difference but I really need both open to make the big difference. Interestingly if I don't open the one which makes the big difference I can hear the gushing water sound in the other.
Why would opening a couple of rads upstairs (and only two in particular) cause the nouse in three rads downstairs to decrease ? I don't undersand how they can have that effect. Opening and closing any other rads upstairs has not effect at all. As far as I remember the pipes that came out of the boiler went in to the kitchen and then branched off two going along under floor to the lounge and feeding the downstairs rads and two staying at kitchen ceiling level going under the bathroom floor and feeing upstairs.
I should add I've been in the house 3yrs and the heating has always been fairly noisy and I recently had an extension fitted and a new CDI boiler fitted with a couple of extra rads downstairs. I had hoped this would have improved the noise but if anything it is worse.
Any idea's ?
Thanks
