Noisy radiators

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80Sprint
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Noisy radiators

#1 Post by 80Sprint »

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
Mike

1980 Vermillion Sprint - 174bhp
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xvivalve
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Re: Noisy radiators

#2 Post by xvivalve »

Vibration in the end/top panels that are usually just friction fitted?
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80Sprint
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Re: Noisy radiators

#3 Post by 80Sprint »

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.
Mike

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Re: Noisy radiators

#4 Post by xvivalve »

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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Re: Noisy radiators

#5 Post by 80Sprint »

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.
Mike

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Re: Noisy radiators

#6 Post by new to this »

On the pump There be a speed setting,if you adjust the speed setting does the noise increase ?
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Re: Noisy radiators

#7 Post by GlenM »

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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