Bath Tap Temperature

[Leaky123]

Tmv only on new. Replacing an existing doesn't need one. Do you have a shower or anything similar. Could be mains cold back feeding through cooling hot.

There is a separate mixer shower above the bath taps which seems to be fine.

 

[Riley]

Could be thermostatic though so is capable of dealing with the cold Mains

 

[Shower Engineer]

There is a separate mixer shower above the bath taps which seems to be fine.

In that case it could be the hot NRV in the mixer shower that is causing the problem.

 

[SimonG]

Goosed check valve. Changed a shower last year. All outlets in bathroom not very hot. They spent a fortune on visits to fix the combi. I was referred to change shower and swap taps. Phoned me after to tell me the water had never been so hot in the bathroom. All down to shower.

 

[Coby kenny AGUILAR]

I'm not at home to check the exact makes, I believe it's a Potterton, 1980's gas boiler and here's an image of the cylinder.

View attachment 38195

Check under bath and see if you have on of these.
Google Image Result for https://cdn.aws.toolstation.com/images/141020-UK/800/18520.jpg

If you don't have a TMV send a picture of bath taps and could you try get a clearer image of the cylinder and pipework later on, take a step back and include as much pipework as you can

Does anyone else see two pumps? Maybe a thermal store with a mixer on the side...

 

[sammathias]

I don’t understand why if the installer was installing to regulations he should’ve installed one ??

Do you install a tmv everytime when fitting a bath??

 

[Riley]

You don’t have to but on the rare occasion that I have done baths in recent years I have just from a safety perspective because they tend to be elderly customers

 

[Leaky123]

Thanks for all the advice and prompts. I’ve worked out there is a TMV on the cylinder pipework and think this might be the problem. I’ll let you know how I get on.

 

[Harvest Fields]

Thanks for all the advice and prompts. I’ve worked out there is a TMV on the cylinder pipework and think this might be the problem. I’ll let you know how I get on.

How did you figure that out?

 

[EvilDrPorkChop]

Isn't it a thermal store, hence the two pumps? Rather than just a traditional cylinder.

 

[ShaunCorbs]

Yep thermal store