Stuart Turner Monsoon Universal 4 bar twin - HUNTING

[Agile]

Perhaps the leak had not developed trhen?

When seals in mixers leak they sometimes start after a while. Every time a control is moved the seal is subjected to a little wear.

We dont know what the problem is caused by yet.

I also asked you to trace the extent of hot pipes from the pump when cold was off and drained. If the hot is leaking then hot pipes might show you the path to the leak!

 

[woodfordma]

Well it has to either be a unit or a leak. Once units have been ruled out then it's about finding the leak. Am I barking up the wrong tree by asking about isolating the shower mixer as nobody has helped me out here. Surely these could be a problem and isolating them would give an answer. Please?

Thanks

 

[doitall]

I gave you some tests but still waiting for the results.

Apart from that.

You need to isolate each appliance and test them one at a time, starting with the wc, and the new work.

When you have removed them the equation, you can start wrecking the place to isolate the showers

 

[woodfordma]

Thanks. That's what I wanted to know.... That it's not possible to isolate shower without pulling it down. That sounds silly that you have valves to isolate everything else but showers. I will do the tests as asked and report back afterwards. Thanks.

 

[Agile]

I also asked you to trace the extent of hot pipes from the pump when cold was off and drained. If the hot is leaking then hot pipes might show you the path to the leak!

Are my posts invisible?

Or do you have a good reason to think that following hot pipes will not take you to the leak?

 

[doitall]

I also asked you to trace the extent of hot pipes from the pump when cold was off and drained. If the hot is leaking then hot pipes might show you the path to the leak!

Are my posts invisible?

Or do you have a good reason to think that following hot pipes will not take you to the leak?

That's the problem Tony, I would take a wild guess and say not many pipes are accessible.

The shower probably has valve on the feeds behind the tiles.

 

[woodfordma]

I'm afraid doitall is correct. There is no exposed pipework really. Though they aren't in the walls, they are boxed in. Although if it is a leak I reckon it's on the new plastic pipework to the loft as apart from attaching the new taps etc the rest of the pipework is what BG installed and had no problems.

 

[doitall]

Now your getting warm, New plastic pipework to loft.

I would concentrate on anything new prior to the problem, after you did a few simple tests on the mixer taps, which has turned into a saga.

If you know where the pipes are, smack a hole in the wall and fit level valves.

 

[Agile]

This leak would usually show itself.

I gave an example of where the new loft pipework was not to blame.

But there are so many tests that I have asked for that have not materialised.

If you were an apprentice who blindly did what I asked and reported back then I expect that I would have found the cause by now.

Tony

 

[woodfordma]

Hi Tony

I know you have asked for tests, although they have been diluted amongst all of our posts. I hope to do them one at a time in the evenings this week.

Before I confirm the tests you are after can I say that last night I isolated everything (all WCs, taps, washing machine) except for the showers and the pump continued hunting.

Can I confirm the tests you want as I have found the last few v. confusing. You want me to feel for warm pipes? As Doitall said there are no exposed pipes, only when they reach the taps. But I can feel whatever I can get to. Whilst doing this did you say you wanted the hot outlet isolated and a hot tap open?

Also you want the flow rate from the kitchen cold tap when the mains is off. Is that correct. You also wanted the flow rate under another circumstance.

I'd be grateful if you could describe these tests a bit more simply for a simpleton layperson like myself!

Thanks Tony

 

[woodfordma]

Apologies if my last post did not make much sense.

As I said I isolated all feeds except for the showers and the hunting continued.

Please could you give a bit more detail on what your remaining tests are?

Under what conditions do you want flow rate from the cold tap in the kitchen and under what conditions am I meant to be feeling for warm pipes?

Many thanks

Mark

 

[Agile]

All tests with cold water supply off and cold tap turned on.

Feel to see which pipes may be warm after an hour or more.

Measure flow rate from cold tap.

What iterests me is if this trickle is let by from the cold supply.

Does the trickle stop if you isolate the pump hot output?

What do you turn off?

What do you have in the street or a second place to turn off?

Tony

 

[woodfordma]

Morning Tony

Right....As you asked I turned off the mains at the cellar stopcock and kitchen cold on, all mixers to cold position.

The flow rate of the trickle from the kitchen tap was 0.1375L/min

Two hours later I felt for warm pipes but could not find any(all hot pipes meeting their destinations felt cold). Even the hot outlet leading from the pump was cold. The hot and cold plastic pipes going up to the loft also felt the same temperature (as plastic is a poor conductor you would expect this).

The flow rate with the hot outlet from the pump turned off was identical as before (0.1375L/min). I waited a 4-5 minutes before testing.

When I turn off the pump's hot outlet I close the valve on the flexihose hot pipe leading away from the pump (ie the opposite to the one entering the pump from the hot water tank).

I have not checked the street yet although I am sure there is a valve there to turn off the water so I will have a look in daylight tonight to see if I can get in and make out what the valve is.

I'm afraid that doesnt help much.

Points to note:

I mentioned before that when I isolate the pump hot outlet then open it again immediately, the pump will not hunt. When I isolate the pump hot outlet, wait a couple of minutes and switch it back, the pump will go off.

Where abouts in London are you based?

Thanks

Mark

 

[doitall]

Why are you putting the mixers in the cold only position.

is the pump going off during all this.

 

[woodfordma]

Tony asked me to put them all in the cold position before but I figured the cold position was as good as any other anyway.

Yes, pump continues whilst mains is off and kitchen tap is open. Obviously when I close the hot outlet from the pump the hunting stops.

???