What is negative head - re shower

[gbakerlowside]

Hi, we have an electric shower in a loft conversion, so it is above the cold water tank but it is connected to the mains water. The shower is not very good and is a disaster if another tap is run elsewhere. Question is - is this negative head ? So should I get a negative head pump and connect that to the shower; or is the general water pressure poor so should I install a whole house pump ? Thanks

 

[seco services]

yes it negative head.
no you can't put a pump on to the mains its illegal.

get a electric shower that is tank fed and it has its own pump and will be better pressure.

or fit a mixer valve with a neg head pump

 

[doitall]

How can it be a negative head, it's connected to the mains

 

[seco services]

How can it be a negative head, it's connected to the mains

in that respect no.
but in the respect of the shower head above the tank yes if tank fed.

i just could be bothered to type it all. its to late.

 

[plumskull]

if tank fed.

It`s an electric shower, how can it be tank fed?

 

[plumskull]

So should I get a negative head pump and connect that to the shower; or is the general water pressure poor so should I install a whole house pump ?

No one`s incoming mains cannot sustain an electric shower! Change your shower mate, It`s well Sh**te.

 

[swbjackson]

I takr it you've never worked on a property with a restricted cold main then? I've come across properties where the mains flow rate was 3 l/min. Pressure was excellent though.

 

[plumskull]

I takr it you've never worked on a property with a restricted cold main then? I've come across properties where the mains flow rate was 3 l/min. Pressure was excellent though.

Nope, never worked on a restricted cold main, can`t imagine why it would be restricted, mains pressure is measured in bar not litres per minute.

 

[doitall]

I takr it you've never worked on a property with a restricted cold main then? I've come across properties where the mains flow rate was 3 l/min. Pressure was excellent though.

Nope, never worked on a restricted cold main, can`t imagine why it would be restricted, mains pressure is measured in bar not litres per minute.

Oh dear, Another 10 weeker let loose.

You were doing so well plumskull.

One post t0000ooooooooooooo many mate.

 

[kevplumb]

I takr it you've never worked on a property with a restricted cold main then? I've come across properties where the mains flow rate was 3 l/min. Pressure was excellent though.

swbjackson wrote:
I takr it you've never worked on a property with a restricted cold main then? I've come across properties where the mains flow rate was 3 l/min. Pressure was excellent though.


Nope, never worked on a restricted cold main, can`t imagine why it would be restricted, mains pressure is measured in bar not litres per minute

err dingbat read the post again sw was referring to flowrate which has nix to do with pressure

Oh dear, Another 10 weeker let loose. icon_rolleyes.gif

You were doing so well plumskull.

One post t0000ooooooooooooo many mate.

10 weeks john don't think this twonk got past the third

 

[kevplumb]

probably cos he has forgot more than you will ever know

 

[doitall]

There's several way to solve the problem, the best way depends on the mains pressure.

Accumulator or pump.

 

[plumskull]

There's several way to solve the problem, the best way depends on the mains pressure.

Accumulator or pump.

Or, pardon me for having an opinion, check your incoming mains pressure,3 bar is most excellent, normally about 1-2bar if you haven`t got that you need to speak to your water provider & check that your incoming main supply is adequate for the utilities in your home.

 

[plumskull]

There's several way to solve the problem, the best way depends on the mains pressure.

Said that in the first place.

No need for accumalator or pump to an electric shower, ridiculous advice, you must have a problem with your incoming cold main supply, is your house tank fed for cold water supply upstairs? Check it out.

 

[mickyg]

No need for accumalator, ridiculous advice, you must have a problem with your incoming cold main supply

So what do people use accumulators for one might ask?