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Post by dickpuller on Jan 30, 2024 16:02:07 GMT
A ‘friend’ removed a OV boiler & vented HW system & storage tank etc when fitting a new combi(known as a conversion). So all H&C pipes are now High Pressure. All viable pipes were clipped, but there’s now a hellish Water Hammer.
The WC fill valve is OK & there’s a Shock Arrester at the Combi.
Anyone got any ideas of what to try?
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Post by battle1066 on Jan 30, 2024 20:47:31 GMT
Well I would start at the burner pressure and reduce it to see if it has an affect - to prove its not overfiring. Temperature swings cause water hammer too!
I would consider how good he restructured the pipe work and if any zone valve bodies are in incorrectly to the spring closing against flow.
I would look at the condensate system make sure the pipework isn’t undersized or blocked or pitched wrong you get crazy problems.
After that I would have to start spending money.
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Post by tomplum on Jan 30, 2024 21:14:53 GMT
In the old days we used to fit a lenght of copper tube with no out lets to form a 'dead end' it acted as a shock arrester but was outlawed in the 1990's water bylaws as a place where germs to breed,  |
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Post by dickpuller on Jan 31, 2024 6:44:01 GMT
Well I would start at the burner pressure and reduce it to see if it has an affect - to prove its not overfiring. Temperature swings cause water hammer too! I would consider how good he restructured the pipe work and if any zone valve bodies are in incorrectly to the spring closing against flow. I would look at the condensate system make sure the pipework isn’t undersized or blocked or pitched wrong you get crazy problems. After that I would have to start spending money. It’s on the H&C matey👍👍 |
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Post by dickpuller on Jan 31, 2024 6:46:20 GMT
In the old days we used to fit a lenght of copper tube with no out lets to form a 'dead end' it acted as a shock arrester but was outlawed in the 1990's water bylaws as a place where germs to breed, Yes Tom, it was a requirement at one time that an ‘air lift’ was fitted at every Tank Ballvalve. However, as you say they changed their tune, as always!!!😡😡 Just for clarification, it’s on the Hot & Cold system. |
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Post by cathoderay on Jan 31, 2024 10:49:27 GMT
Go round the system isolating and operating valves, but if you can't find the cause, treat the symptom with a little hammer arrestor. It does what Tom was on about but is allowed under regs.
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Post by Norfolk n Good on Jan 31, 2024 12:22:28 GMT
testing to see if guests can post
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Post by tomplum on Jan 31, 2024 12:24:41 GMT
ok the site is open to all, please wear hard hat and sun cream,  |
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Post by crowsfoot on Jan 31, 2024 18:41:41 GMT
A ‘friend’ removed a OV boiler & vented HW system & storage tank etc when fitting a new combi(known as a conversion). So all H&C pipes are now High Pressure. All viable pipes were clipped, but there’s now a hellish Water Hammer. The WC fill valve is OK & there’s a Shock Arrester at the Combi. Anyone got any ideas of what to try? These days I think it's a worn spindle in one of the 1/4 turn taps, question is which one? In a lot of cases it's the hot tap on the sink that's the favourite. Quite often the faulty tap will run when a different tap is open. It can be a case of renewing the inserts or even the complete tap one by one until the noise stops. JJ had the problem and put up a post/video about this common modern day fault a few years ago. |
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Post by crowsfoot on Jan 31, 2024 18:57:07 GMT
A few years before I retired I had a complaint of the same nature at a property, however, I could never trigger the noise whilst I was there! It eventually turned out to be the worn faulty tap insert but it was in a tap that was fitted next door and the noise was rattling through the walls  ! NB. On another job I was trying to trace some water hammer which turned out to be that the poor old dear was suffering from tinnitus. I can still hear her saying "whoosh, whoosh, can't you hear it"? The joys of being a maintenance plumber eh?  |
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Post by tomplum on Jan 31, 2024 19:39:48 GMT
I can't remember if I posted it before here but its a similar thing about a customer who had a complaint every night after I fitter her new boiler, the complaints where the telly stopped working, the toilet was noisy, the shed roof was leaking and a dozed other things I can't remember but the craziest one was a roaring noise every night at the same time, It was at 6.30 every night so I went one night ay 6.30 and sure enough the was a roar, It was a aircraft going over her house and it was about 20 miles away from Manchester airport and applying the air brakes as it was descending, I pointed that out to here and her reply was, " they never did that before the boiler was swapped" In the end I had to tell her, If you call me again for any reason at all, I will call the police that you are stalking me, That worked, she never called again ,,  |
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Post by DIYDafty on Jan 31, 2024 19:57:45 GMT
Take it she wasn't a looker then
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Post by tomplum on Jan 31, 2024 21:17:26 GMT
old enough to be my grandma  |
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