Mixer shower problem

polzovatel

Hi,
We moved to the new house a few months ago and had a Mira mixer shower which had never worked since we moved in.
The house has a cold water tank on the loft and a hot water in the airing cabinet which is on the same level as the shower.
I got a plumber from myhammer and he suggested to buy a Triton luca shower, installed it and the shower never produced any hot water (when you take the shower off, there is sufficient cold and hot water flow ), the guy does not answer the phone!
Now I got another plumber which is saying that this shower would never work when the hot water tank is on the same level,
we will not be able to use the thermostatic showers, only manual ones which will cost another £250 + £300 for the install. Is that so?
Any advice appreciated, I will spend at the end over £800 on this shower!!
Thanks

macman

To use a mixer shower you need a head of water from the shower outlet to the hot tank, which you obviously haven't got.
The hot tank would need raising-or alternatively an electric shower might have been a simpler option.
Your 'plumber' didn't appear to have a clue-was he qualified?

polzovatel

Will manual Mira shower do the job? I checked with the neighbours , that's what they have and it works.
How much would be to install a new electrical shower? And how much is to raise the hot water tank?

mikey72

The hot water tank shouldn't need raising if it is fed from the cold water tank in the loft.
It should be the same pressure hot and cold in that case.
A pump may work better, providing there is some flow initially.

1984ReturnsForReal_2

Plumb the the cold into the mains & fit a pump around 2.5bar on the hot.

Depending on the pump needed & the electrical supply you have it should be possible to achieve for the same or less than £300 (unless you have no space in your airing cupboard or under the bath & need to fit an anti-gravity loop & negative pressure pump in the loft in which case you can double it).

Its the best solution all round. Instead of blowing another £300 on something else that is just as likely to fail because the pipework is the same.

polzovatel

Will Salamander CT85 pump do the job? How much does it cost to install the pump?
Are they noisy - the airing cabinet is next to the main bedroom and there is already a lot of noise coming out of the tank? Will it make a noise only when I switch the shower on?
The shower is in the en-suite bathroom, there is no bath there. Could it be installed in the main bathroom?
Will it definetely resolve the problem- just don't want 'pumping' any more money into this!
Thanks a lot

mikey72

1984ReturnsForReal wrote: »

Plumb the the cold into the mains & fit a pump around 2.5bar on the hot.

Depending on the pump needed & the electrical supply you have it should be possible to achieve for the same or less than £300 (unless you have no space in your airing cupboard or under the bath & need to fit an anti-gravity loop & negative pressure pump in the loft in which case you can double it).

Its the best solution all round. Instead of blowing another £300 on something else that is just as likely to fail because the pipework is the same.

Not good to mix rising mains and pumped water.
CT50 would be better.
Providing there is enough flow to turn it on in the first place, and it fits the application, otherwise you're back to square one.
Only the plumber fitting it could tell you if it's going to work.

1984ReturnsForReal_2

mikey72 wrote: »

Not good to mix rising mains and pumped water.

Why is that then?

So long as a double check valve is installed.

1984ReturnsForReal_2

polzovatel wrote: »

Will Salamander CT85 pump do the job? How much does it cost to install the pump?

Could be a less than £150. It depends where you can place it or if there is an electric socket about. They come with about 2m of flex with a plug on the end.

The pump only makes a noise when the shower is on & for about 5 seconds after its switched off.

The CT85 would pump the hot alone & should do the job providing you place it low. If you have a negative head (highest part of pipework to shower less than 60cms from base of cold water cistern) it may not work.

You need to chat to someone who knows, who can see the set up at your home & where the pipes are.

mikey72

1984ReturnsForReal wrote: »

Why is that then?

So long as a double check valve is installed.

And no no one else flushes the toilet, turns on a tap, runs the washing machine, waters the garden, runs the dishwasher...............
Tank fed twin pump is much better with a thermostatic shower.
And it's already piped up as tank fed.

1984ReturnsForReal_2

mikey72 wrote: »

And no no one else flushes the toilet, turns on a tap, runs the washing machine, waters the garden, runs the dishwasher.......

Why do you assume they are mains fed?