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20-10-2015, 01:34 PM
11

Re: A whistling radiator

Thanks George. Will do.
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10-01-2016, 06:41 PM
12

Re: A whistling radiator

Although most Thermostatic Radiator Valves ( TRV's ) can be installed on the flow or return, I still prefer to have them on the flow. Just try adjusting the valve setting to see if that makes any difference.
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10-01-2016, 06:50 PM
13

Re: A whistling radiator

Useful info from Motley Fool site:

"A problem with TRVs is that despite public perception they are a very clumsy way of regulating temperature. The boiler has to remain on all the time because the TRV works by reducing the flow through the radiator to approaching zero as the room temp approaches it's target.

This is an abuse of the pump as most of the flow it is trying to deliver is virtually closed off. So the pressure rises forcing the water through the valves, making them close down a little further. Whistling or rushing noise sometimes results.

If setting the pump to minimum speed (and therefore minimum output pressure) does not work, then often it will be found that there is no 'bypass' circuit available to take surplus pump flow as TRVs close down. One radiator should not have a TRV so it can act as a bypass. Alternatively spring-loaded bypass valves are now available which let no water flow until pressure rises to a pre-set value, then they open. One of these will probably resolve the whistling problem.

Fitting a smaller radiator will probably also help, as a higher water flow rate will then be required to maintain room temperature. This could just transfer the prob to another room though!"
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10-01-2016, 10:47 PM
14

Re: A whistling radiator

Originally Posted by gasman ->
Although most Thermostatic Radiator Valves ( TRV's ) can be installed on the flow or return, I still prefer to have them on the flow. Just try adjusting the valve setting to see if that makes any difference.



Thanks Gasman. The problem occurred a few weeks back now, but you were right, I just moved the valve a fraction and it stopped immediately.
Thanks anyway.
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10-01-2016, 11:27 PM
15

Re: A whistling radiator

No problem. A couple of more tips. If you have TRV's, keep all doors closed where these are installed. This will heat the room sooner and shut the boiler down sooner - therefore saving money.
If you have a hot water cylinder, insulate all pipes in the airing cupboard. This retains the heat in the pipework and sent back to the boiler at a slightly higher temperature, shutting the boiler down sooner - therefore saving you money again.
Last - where ever you have a fossil burning fueled appliance ie. gas, wood, coal, coke, it is recommended that you have a Carbon Monoxide detector ( cod ) Let's save lives and have your appliances serviced every year!!!!
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11-01-2016, 12:07 AM
16

Re: A whistling radiator

Thanks again - and don't worry, I do have the annual service.
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11-01-2016, 12:36 AM
17

Re: A whistling radiator

Originally Posted by Mups ->
Thanks again - and don't worry, I do have the annual service.
Ooer missus
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11-01-2016, 12:41 AM
18

Re: A whistling radiator

Well I'm on me own Purwell, and I'd sooner be safe than sorry.
 
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