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 Post subject: Noisy radiators
PostPosted: Tue Nov 21, 2023 10:47 am 
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Location: East Staffordshire
Anyone know what causes the noise in the video. It only affects 3 downstairs radiators and upstairs are fine. The sound in the video is not that accurate, it's more of a tinkling/buzzing sound. 2 of the rads replaced but no difference. Very little sediment came out of the rads.

https://youtu.be/1vplwai36g4?feature=shared

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1980 Vermillion Sprint - 174bhp


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 Post subject: Re: Noisy radiators
PostPosted: Tue Nov 21, 2023 11:36 am 
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Vibration in the end/top panels that are usually just friction fitted?


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 Post subject: Re: Noisy radiators
PostPosted: Wed Nov 22, 2023 8:55 am 
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No vibration it seems Alun, they have plastic tensioners on them. It's more of a tinkling sound, but fairly loud, which is why I was expecting lots of rusty particles to come out but didn't find any. That seemed the likely culprit to me but apparently not.

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1980 Vermillion Sprint - 174bhp


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 Post subject: Re: Noisy radiators
PostPosted: Wed Nov 22, 2023 12:36 pm 
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Might they be the first three radiators after the pump? If so, is the noise louder in the one nearest the pump?


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 Post subject: Re: Noisy radiators
PostPosted: Wed Nov 22, 2023 4:53 pm 
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Pump is in the loft with the boiler so these are the furthest away. Only thing I can think of is to drain and refill the system but was trying to avoid this.

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1980 Vermillion Sprint - 174bhp


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 Post subject: Re: Noisy radiators
PostPosted: Wed Nov 22, 2023 11:29 pm 
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On the pump There be a speed setting,if you adjust the speed setting does the noise increase ?


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 Post subject: Re: Noisy radiators
PostPosted: Mon Nov 27, 2023 6:14 pm 
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Location: Midhurst, West Sussex.
It could just be the sound of the water circulating inside the radiators.

As Dave says, try turning the pump speed down to see if that makes a difference. It might still flow well enough with the speed set a bit lower.

You could also try adjusting the lock-shield valves, on the opposite end of the radiators to the TRVs. Has the system been properly balanced with the lock-shield valves?


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