power shower

[dancom]

hi, i'm going to fit a power shower with a pump and mixer shower, i got a million questions tho!!
1st problem is i don't have a cold water tank but my hot water tank has a built in cold water tank, i was wondering if i could tap into that?
2nd thing is as the hot water tank has the cold water tank non top would i be able to fit the surrey flange thing which i belive goes in the top?
should of just got an electric shower!!
hope someone can help
thanks

 

[leakydave]

I don't think what you want to do will work...

there will be insufficent water in the fortic cylinder's 'header tank' to run a shower... 3 minutes and it will probably be empty!

You have 2 options:

1. Change your cylinder for one fed from a CWSC (Cold Water Storage Cistern)

or

2. Fit an electric cold mains shower, such as Mira Sport (I recommend the thermostatic version: far less temp fluctuation if other cold outlets in use)

 

[mogget]

Quite often, the water in the top of a combined cylinder isn't particularly cold, either.

 

[dancom]

thanks but i've already bought the shower, so i should fit a seperate cold water tank for the shower, i suppose the cheap 4 gallon one will be too small then?

 

[dancom]

any ideas on the flange problem

 

[seco services]

ya plenty.

if you have a combination cylinder how do you intend on fitting a surrey flange ?

 

[dancom]

thats my question!!! is there a similar type of thing for these tanks or should i just use a t piece?

 

[mogget]

You need a new cold water cistern AND a new hot water cylinder. Cistern feeds cylinder and shower cold, cylinder supplies shower hot. Through a pump if you like.

If you are going for a power shower, even a 25 gallon cold water cistern is likely too small. 40 or 50 gallon would be more appropriate.

If you attempt to use your existing fortic, you are setting yourself up for failure.

 

[seco services]

these cylinders don't hold enough stored water in the top.

thats why mostt fit electric showers in flats etc where these cylinders are fitted.

what shower have you brought ?

 

[leakydave]

I will say it again: you can't use this sort of cylinder with a pump, even if you fit an additional CWSC for the cold water to the shower:

the pump will empty the top filling header tank quicker than the mains will fill it.

Either change your cylinder £££££ or buy and electric shower £££

or just have baths!

your choice: don't pump from a fortic cylinder

 

[dancom]

its a gainsborough thermostic mixer shower. i dont really want to replace the tank as it is only a few months old!

 

[mogget]

the pump will empty the top filling header tank quicker than the mains will fill it.

Not only that but the pump would likely draw in air due to the working head being too low.

 

[mogget]

its a gainsborough thermostic mixer shower. i dont really want to replace the tank as it is only a few months old!

Leakydave told you, you have two options: use an electric shower or upgrade your water supply.

Wishful thinking will not make it work

 

[seco services]

its a gainsborough thermostic mixer shower. i dont really want to replace the tank as it is only a few months old!

can you take it back and change it ?
where you get it ?

 

[dancom]

its from b&q so can take it back, thanks for the help