Discuss Mira Advance 8.7KW, very poor water flow rate in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Just been to see a friend who has a Mira advance 8.7 in his flat. Flow rate of the water is terrible, he was saying he had looked online and seen they do 11KW showers and was asking if he could change if for a bigger one.

Does anyone have any experience with the Mira Advance? Is the water flow always ---- poor? It seems really bad for an 8.7KW shower, I usually fit Triton 7.5KW's at work cause we only have 32A supply to work with and they seem better than this.

11KW shower seems a bit overkill to me but i could do it, 10mm T&E feeding the current shower, rm B and only <10M from DB to shower.

I'm starting to wonder if pressure is just very bad :confused: don't want him to spunk £300 on a new shower and have same problem.
 
Bulk Workwear - Clothing Suppliers for the Whole Forum Network
This official sponsor may provide discounts for members

Leesparkykent

Mod
Mentor
Arms
Supporter
Esteemed
Just been to see a friend who has a Mira advance 8.7 in his flat. Flow rate of the water is terrible, he was saying he had looked online and seen they do 11KW showers and was asking if he could change if for a bigger one.

Does anyone have any experience with the Mira Advance? Is the water flow always **** poor? It seems really bad for an 8.7KW shower, I usually fit Triton 7.5KW's at work cause we only have 32A supply to work with and they seem better than this.

11KW shower seems a bit overkill to me but i could do it, 10mm T&E feeding the current shower, rm B and only <10M from DB to shower.

I'm starting to wonder if pressure is just very bad :confused: don't want him to spunk £300 on a new shower and have same problem.
What flow rate and pressure are you dealing with?
 
In my experience it sounds like his pressure, if it's gravity fed system I think you achieve something like half a bar of pressure for every meter dropped. increasing his shower KW isn't going to make a difference unless your saying its not heating up enough
 
  • Thread Starter Thread Starter
  • #6
I'm not sure on what his incoming pressure is like, I'll text him and see what its like on his other taps stuff.

Its an old ex council flat so I guess some of the infrastructure isn't great, think he on zone heating and hot water still hence the need for an electric shower.

I think he knows another lad who is a plumber so maybe he can enlighten us on what the pressure is like coming into the flat.
 

Andy78

-
Mentor
Arms
Esteemed
Could be water pressure, could be an internal part of the shower, could be as simple as descaling the shower head.
 

GBDamo

-
Supporter
In my experience it sounds like his pressure, if it's gravity fed system I think you achieve something like half a bar of pressure for every meter dropped. increasing his shower KW isn't going to make a difference unless your saying its not heating up enough
0.1 bar/m roughly, so if hes gravity fed from a loft tank his pressure could be really poor.
 

ChrisElectrical88

-
Mentor
Arms
Esteemed
Purge it. Bottom left of the shower behind the cover is a whiteish button on a metal square part. Try that first to get water flowing and clear any ---- in the pipes. There amazing showers.
 

David Prosser

-
Arms
Esteemed
In my experience it sounds like his pressure, if it's gravity fed system I think you achieve something like half a bar of pressure for every meter dropped. increasing his shower KW isn't going to make a difference unless your saying its not heating up enough
10m of head gives about 1 bar, 0.981 to be precise if the water is @4C.
So a 1 meter drop provides about 0.1 bar. Is the cold water tank above in the loft ?

If the OPs friend has mains water supply from Anglian Water then the pressure at his stop tap should be at a minimum of 1 bar.
 

ChrisElectrical88

-
Mentor
Arms
Esteemed
Purging it will clear the head mate and put some proper pressure through all the pipes.

Edit, if the pressue comes put crap when ypur purging it nothing you will ever do will increase the pressure and Mira will charge you a call out fee to tell you the pressure is not suitable.
 
Test Meter - Forum Sponsors since 2007!
This official sponsor may provide discounts for members

Reply to Mira Advance 8.7KW, very poor water flow rate in the Electrical Forum area at ElectriciansForums.net

Top Bottom