Cold header tank Hot

[Dolgoed]

Hi my tank in the loft is heating up (no the Heating system tank) the pipe that takes water off to the hot water tank is the causes as i can see it back feeding when either the hot water is on or the cental heating is on but I do not understand why, I have recently had the Y valve changed and a new bathroom fitted. The hot water tank was new last year. Any ideas or thoughts would be appreciated

 

[kevplumb]

and a new bathroom fitted.

bath mixer or new shower by any chance

 

[Dolgoed]

New mixer shower fitted we did not have one before just a bath, why what are youre thoughts

 

[Dolgoed]

Any thoughts anybody!!!!!!!!!!!!!!!!!

 

[seco services]

you say it only happens with heating or hw on.

sounds more like the coil poss failed.

is the f/e higher than the cws tank ?

 

[Gasop]

Any thoughts anybody!!!!!!!!!!!!!!!!!

Is the cold from the shower mixer fed directly from the main or from the cold tank in the loft.

 

[Gasop]

Any thoughts anybody!!!!!!!!!!!!!!!!!

Is the cold to the shower mixer fed directly from the main or from the cold tank in the loft.

 

[Dolgoed]

I am sorry i dont know if its feed from tank or mains. the hot water does not seem to flow as fast now as it did before we had the mixer basin taps and shower. although i have a feeling its fed from the mains as the water from the cold tap is cold and the header tank is warm

The central heating header tank sits on the same frame as the cold water tank.

If i trimmed in the main valve to the house to reduce the pressure of the mains would this help in identifing if the mixer was the problem?

 

[seco services]

I am sorry i dont know if its feed from tank or mains.

can you follow the pipe ?

the hot water does not seem to flow as fast now as it did before we had the mixer basin taps and shower. although i have a feeling its fed from the mains as the water from the cold tap is cold and the header tank is warm

thats probably due to the min pressure the taps need to operate.

The central heating header tank sits on the same frame as the cold water tank.

is the water level higher lower than the cws.
you have to help us to help you we can't see it.

If i trimmed in the main valve to the house to reduce the pressure of the mains would this help in identifing if the mixer was the problem?

if you can see it backfilling into the tank shut the main stopcock and see if the problem stops.

on the other hand if the shower was passing cold to hot it wouldn't only happen when heat/hw on.

 

[Dolgoed]

I can not follow the pipe as i have tiled the bathroom floor

The central heating header tank water level is lower than the cold water header tank

When i had a new tank in the summer is it possilbe that the levels of the pipework has altered causing a problem.

also would renewing the y valve cause a problem

 

[seco services]

I can not follow the pipe as i have tiled the bathroom floor

see how many feeds come from the cws.

The central heating header tank water level is lower than the cold water header tank

not a coil issue then

When i had a new tank in the summer is it possilbe that the levels of the pipework has altered causing a problem.

you had a new cws ?

also would renewing the y valve cause a problem

shouldn't do no.

shut the mains water stopcock.

 

[Dolgoed]

I had a hot water tank not Cold water tank.

From what i can see the cold water header tank has a
1 a feed in
2 an over flow
3 a vent from the hot water tank that does not enter into the water level

then at the bottom of the tank
4 a drain
5 a feed to the hot water tank (the one you can see back filling and the pipework is warm)

So from this i presumme the cold water to the taps is feed direct fro the mains

 

[seco services]

going by that i would say your shower is cold mains.
what shower make/model is it ?

 

[Dolgoed]

triton alya thermostatic mixer shower

 

[seco services]

triton alya thermostatic mixer shower

from homebase.