Originally posted by oshingler
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I'm normally a silent forum member, but thought I'd share my Evohome noise reducing experiment with you. Advance warning - this is probably over-engineered!
I've concluded that most of the noise I was experiencing was due to the HR92UK motor noise being amplified through the radiator. I crudely proved that by attaching the head to a new unplumbed valve, set the CYCL to start and touched it against the pipe on the radiator, with an immediate noticible increase in volume.
After a lot of searching, I discovered the Drayton ETF2, which is a 2m capillary extension for a TRV head. I've fitted the extension to the valve body, and the remote end to the HR92UK. There's a lot of bodging involved to get that final link to work because the pin in the extension is not as fixed or stable as it should be in my opinion. I used two small washers and a small nut to build up the height around the pin in the remote end of the extension, and then I pressed a metal coin from a steel back box and used that to create a large flat area for the HR92UK pin to push down on. Finally, I bodged an angled bracket and fixed it to the wall, using some foam and screw caps to dampen the vibrations against the wall too. The result... it's at least half as quiet (by using the scientific method of 'how much does it annoy me now?'). It's not silent of course, and you still hear it in operation, but I now consider it to be acceptable. It's not the prettiest of results, but it is only a proof of concept. In theory, you can get a 6m extension instead and hide your HR92UK in a more sound proofed location.
And some photos:
[ATTACH=CONFIG]934[/ATTACH][ATTACH=CONFIG]935[/ATTACH]
[ATTACH=CONFIG]936[/ATTACH]
I've concluded that most of the noise I was experiencing was due to the HR92UK motor noise being amplified through the radiator. I crudely proved that by attaching the head to a new unplumbed valve, set the CYCL to start and touched it against the pipe on the radiator, with an immediate noticible increase in volume.
After a lot of searching, I discovered the Drayton ETF2, which is a 2m capillary extension for a TRV head. I've fitted the extension to the valve body, and the remote end to the HR92UK. There's a lot of bodging involved to get that final link to work because the pin in the extension is not as fixed or stable as it should be in my opinion. I used two small washers and a small nut to build up the height around the pin in the remote end of the extension, and then I pressed a metal coin from a steel back box and used that to create a large flat area for the HR92UK pin to push down on. Finally, I bodged an angled bracket and fixed it to the wall, using some foam and screw caps to dampen the vibrations against the wall too. The result... it's at least half as quiet (by using the scientific method of 'how much does it annoy me now?'). It's not silent of course, and you still hear it in operation, but I now consider it to be acceptable. It's not the prettiest of results, but it is only a proof of concept. In theory, you can get a 6m extension instead and hide your HR92UK in a more sound proofed location.
And some photos:
[ATTACH=CONFIG]934[/ATTACH][ATTACH=CONFIG]935[/ATTACH]
[ATTACH=CONFIG]936[/ATTACH]
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