Mixer shower problem

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...............
Tank fed twin pump is much better with a thermostatic shower.
And it's already piped up as tank fed.

Its a couple of pound to switch it over.. Right by any tank is the mains.

And if you are fitting a pump to your already connected gravity cold the pipework will have to be moved to the pump, so in effect your way is making more work & more pipe.

mikey72

How many CT85's have you fitted?

mikey72

1984ReturnsForReal wrote: »

Why do you assume they are mains fed?

Seriously?

1984ReturnsForReal_2

mikey72 wrote: »

How many CT85's have you fitted?

Not many.

But I know how to fit them to get an extra years warranty from Salamander & what are acceptable methods of installation to them. Including the location of the draw off point from the cistern, the height of the cistern & negative head issues.

The last one I fitted was an ESP80 obviously that solved the problem of negative head.

1984ReturnsForReal_2

mikey72 wrote: »

Seriously?

Most thermostatic showers can handle imbalanced supplies between pump pressure & mains.

Some of Bristans can go 5 to 1 so you can easily reduce flow or pressure on one side & everything will be fine.

In fact, in theory you should be able to pump at 0.5 Bar against mains.

mikey72

1984ReturnsForReal wrote: »

Not many.

But I know how to fit them to get an extra years warranty from Salamander & what are acceptable methods of installation to them. Including the location of the draw off point from the cistern, the height of the cistern & negative head issues.

The last one I fitted was an ESP80 obviously that solved the problem of negative head.

I think anyone that fits them and can complete the guarantee knows that, if fact if you mess fitting them up so badly you void the guarentee you shouldn't be touching them.
I would agree with you on not many CT85's fitted though.
I only fit the CT50 for single shower applications.

At the end of the day the plumber will fit what he's happy with, so it's back to him and the op.

mikey72

None of this explains why the hot doesn't run when the cold does though, in theory they should both have the same head, and so the same pressure, so that needs looking at first anyway.

Canucklehead

Hi,

Are hot and cold the correct way round?

Is the shower mixer designed for low pressure gravity (even though it's for 'all types of system')

Even though the head of water is the same for hot and cold there will be a small resistance through hot, maybe enough to stop the hot getting past any check valve built into the mixer?

Personally I would ask the end user what they expect from the shower. Then suggest a mixer such as Aqualisa that will give as good a flow as you'll get on gravity, or a pump such as a Stuart Turner Showermate.

I also warn that all pumps produce noise.

Very disappointing if that's the best you get from Myhammer. Very poor grasp of plumbing.


GSR.

keystone

Canucklehead wrote: »

Very poor grasp of plumbing.

:rotfl::rotfl:Very polite way of saying the guy hadn't got a bleeding clue and prolly wasn't even a half decent handyman.

Cheers