Wireless doorbell

[ban-all-sheds]

I presume that's what we're talking about

Apparently not:

Ps it's not electric shower or anything just a shower head out of bath taps fyi

(how else does one control the shower temperature when the water is gas heated?)

By using a basic tap mixer and hoping that nobody turns on any other taps, flushes the loo, etc.

 

[JohnW2]

(how else does one control the shower temperature when the water is gas heated?)

By using a basic tap mixer and hoping that nobody turns on any other taps, flushes the loo, etc.

Although that can be an issue when the supply comes from stored hot and cold water, AIUI (although I may be wrong), that should probably not be an issue with a combi boiler (or similar) - since the hot and cold supplies should, I think, both remain at the same pressure.

Kind Regards, John

 

[winston1]

Yes maybe worth buying the bell
Still can't believe it's "illegal"

WHY? It's not illegal in the US. It's is probably not illegal to buy here. But it will be illegal to use it here.

 

[Dave123456789]

I do have a combi boiler and yes the choice atm is nobody ideally uses the flush downstairs tap etc

But the water doesn't get cold just little flow that's all so not like a freezing shower

I'm based in uk winston and told its issues using here so not done so

 

[JohnW2]

But the water doesn't get cold just little flow that's all so not like a freezing shower

Exactly - as I said, with a combi boiler the hot and cold pressures will remain equal, even when flow is redfuced, so the hot/cold mix (and hence shower water tem) remains much the same.

The 'real problem'/danger can arise when one is using stored hot and cold water (not a combi) with no (or inadequate) thermostatic mixer and inadequate pipework. In that situation, it is possible that flushing a loo or turning on a cold tap somwhere can significantly reduce the cold (but not hot) flow to the shower, thereby potentially resulting in 'scolding hot' water coming from the shower head.

Kind Regards, John

 

[bernardgreen]

and inadequate pipework

more accurately described as badly designed pipework.

 

[JohnW2]

and inadequate pipework

more accurately described as badly designed pipework.

Well, I think that 'inadequate' is a pretty accurate description - although, as you say, the reason for the inadequacy will usually be poor design.

If a shower has it's own dedicated feed pipes from cold water storage tank and hot water cylinder, there will usually (but not always) be no problems of the type we are discussing. I presume that failure to do that is the 'bad design' to which you were referring.

Kind Regards, John

 

[ban-all-sheds]

Although that can be an issue when the supply comes from stored hot and cold water, AIUI (although I may be wrong), that should probably not be an issue with a combi boiler (or similar) - since the hot and cold supplies should, I think, both remain at the same pressure.

Not a chance.

Firstly, the boiler has no involvement with the cold supply to the mixer - they are not related, and there is no reason why they should remain either constant or at the same ratio.

Secondly, if the pipe taking cold water to the bathroom also serves the WC, then causing the cistern to fill will without doubt reduce the flow to the bath taps.

And every single person who has ever used a non-thermostatic mixer tap will assure you that very small changes in pressure of either supply can easily result in very large changes in output temperature.

 

[bernardgreen]

If a shower has it's own dedicated feed pipes from cold water storage tank and hot water cylinder, there will usually (but not always) be no problems of the type we are discussing. I presume that failure to do that is the 'bad design' to which you were referring.

Yes that is the bad design I was referring to.

And every single person who has ever used a non-thermostatic mixer tap .

Single people are normally safe with a non-thermostatic mixer tap, its the married people who have problems with them.

 

[Dave123456789]

My boiler is around 10 years old

Maybe when I get a new one may be better technology and allow the hotter water flow to stay the the same despite taps turned on..

 

[flameport]

A new combination boiler will do exactly the same as the existing one.
It's the flow rate to the property that is the problem, not the device that heats the water.

As for the doorbell interference the only option is to spend £10 and get one of the things. It may cause interference. It may not.

 

[stillp]

A new combination boiler will do exactly the same as the existing one.
It's the flow rate to the property that is the problem, not the device that heats the water.

How d'you know that? Surely it might just be that the combi is too small.

 

[ban-all-sheds]

If a shower has it's own dedicated feed pipes from cold water storage tank and hot water cylinder, there will usually (but not always) be no problems of the type we are discussing. I presume that failure to do that is the 'bad design' to which you were referring.

It's not really a "failure", unless you consider the fundamental choice of having a combi instead of stored hot water a fundamental failure.

It may well be that the OP's plumbing is badly designed for using with a combi shower, and that things could have been done differently (eg not have the WC share the same 15mm pipe as the bath taps. eg having the DHW from the combi in 22mm to a manifold and then separate feeds for bath taps and kitchen taps - maybe the boiler could deliver more hot water when called for). It seems odd not to have done more to look for a better design before doing decoration etc that makes pipework changes unwelcome.

 

[ban-all-sheds]

Bell/button is to go in shower room upstairs

Sounder/speaker is to go in kitchen so people don't turn tap on if people are showering cos flow gets too low.....

I've just thought - how is that ever going to work in practice?

How would the person in the shower know that someone in the kitchen was reaching for the taps and that they should ring the bell to get them to stop reaching?

 

[ban-all-sheds]

Single people are normally safe with a non-thermostatic mixer tap, its the married people who have problems with them.

'tis true that wives (or other female partners) often fail to appreciate the practicality of sometimes combining shower and WC functions to avoid unnecessary flushes, or the eco-friendly philosophy of "If it's yellow let it mellow, if it's brown flush it down", but even so when trying to mix H&C at different pressures basic mixers, particularly bath tap ones, can be a right PITA for single people - often the smallest thing known to man is not the latest particle found by the LHC, it's the dividing line between cold and skin-flaying hot.