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roydonovan · Joined: 01 May 2005 Posts: 78 Location: Basildon

Hi All,

I've got a customer with a Worcester 24I Junior Combi, who is complaining that everytime her husband runs a bath the pressure drops dramatically and the water gets very, very hot. Only when the bath is run.

The only thing I could suggest was that the boiler was not adequate enough for the size bath he keeps running. If stored hot water is used up quickly, will that mean that the boiler will run under pressure because of the sudden lack of water, and that the small ammount of water in the boiler is obviously going to get hotter quicker...like a kettle?
Could someone please confirm? Confused

I hope I've explained what I'm trying to say, but don't have much experience with Combi boilers.

The property is a 2 bed top floor flat.

Thanks in advance for any advice.
Roy Very Happy

AlanE · Posted: Tue Apr 22, 2008 8:48 pm Post subject:

Sorry no don't understand. What actual system have they got?

You say a combi which is not adequate for size of bath?? If it was too lower power the water would be colder!! Then you on to stored hot water which implies a hot water cylinder.

Have you actually undertaken any basic boiler courses?

roydonovan · Joined: 01 May 2005 Posts: 78 Location: Basildon

Hi Alan,

Yep, thanks for pointing out that much of that didn't make much sense!! Laughing

I'm a very busy man with not much time to type !!! Laughing

I must confess....

I've had no boiler training, and I'm not a boiler engineer....and just to put your mind at rest...I don't intend on tyring to fix this...hense my mail ! Very Happy

The lady in question is not great with the details & it took a few hours before she came back with the boiler model.
Could you advise what details you need & I can find out more. I do know there is no cylinder.

Thanks Alan & I apologise for the poor detail, but I do apreciate your time.
Regards
Roy

thescruff · Moderator Joined: 03 May 2003 Posts: 4164 Location: Bath

AlanE · Posted: Wed Apr 23, 2008 6:48 pm Post subject:

AlanE · Posted: Wed Apr 23, 2008 6:53 pm Post subject:

Scruff sounds like what he is trying to say is when bath tap is turned on water flow overall drops, this lower water flow is probably below boiler rated water flow hence water gets hotter than normal, allbeit at a much reduced flow same as throttling the hot tap back.

Alan

thescruff · Moderator Joined: 03 May 2003 Posts: 4164 Location: Bath

Low mains water pressure then Alan Rolling Eyes

roydonovan · Joined: 01 May 2005 Posts: 78 Location: Basildon

Hi Alan & Scruff,

Thank you both for taking the time to reply...again.

I apologise Alan, no offence intended. I've done a bit of plumbing at this customers house & they phoned to ask me about this problem. I've made it clear to the customer that this is not my line of work, but I would try to find out via the very helpfull people on this site, thats why I've got involved. I was trying to be helpful.
The work I done did not involve any area of the heating so I've not investigated further.

I'll leave it here and tell the customer to call a boiler engineer.

Thank you & regards
Roy

thescruff · Moderator Joined: 03 May 2003 Posts: 4164 Location: Bath

It's difficult to diagnose the problem without the full facts.

Obviously it's down to flow/pressure, perhaps the mains pressure is poor. Not opening the bath tap so much should solve the problem