Cold water tank question

[Old Account]

I believe I have got a 2/3 bedroom flat ( quite small / not as big ) and have a vented system.

Right above the cylinder is the header tank which is currently an old 50 gallon tank.

Does somebody know what's the right size of tank to install ?
Is there any chance to install a smaller tank ( poly tank )?


also to where are you guys get your tanks other than screwfix as I am trying to hunt as cheap as possible to ...or is 135£ a decent price at screwfix ?


Would appreciate when someone could let me know.

regards Ron

 

[lame plumber]

best fit like for like or customer will moan if things run out, like hot n cold water, go to an independent merchant like williams, 9/10 times they will beat screwfix and have the items in stock

 

[Old Account]

best fit like for like or customer will moan if things run out, like hot n cold water, go to an independent merchant like williams, 9/10 times they will beat screwfix and have the items in stock

Hello lame I hope you are well ...

Thanks for getting back to me that quick.

I did a mistake it's a 1 bedroom flat so still like for like ? 50 gallon 227liters ?

Williams is not nearby East London

 

[Masood]

CWSC needs to be at least same capacity as cylinder. Williams will deliver to East London.

 

[chris watkins]

CWSC needs to be at least same capacity as cylinder. Williams will deliver to East London.

Why same size as cylinder ? isn't it more to do with replenishment of stored cold water.

 

[Old Account]

CWSC needs to be at least same capacity as cylinder. Williams will deliver to East London.

Thank you very much Massod appreciate it a lot.

 

[Old Account]

Why same size as cylinder ? isn't it more to do with replenishment of stored cold water.

Currently is a 227liters / 50 gallon tank installed. It's small standard sized cylinder ...

So I would just change it like for like to be on the safe side

 

[plumben]

Look at the table on this link Cold Water Storage per Occupant I don't think its 100% accurate but its close, from memory in domestic property its 127L per bedroom OR per person I can't remember I think its per person, so a 1bed flat that could have 2 people would be around 254L so the current 227L would be about right, the proper sizing is in the building regs part L (I think)

 

[Masood]

Why same size as cylinder ? isn't it more to do with replenishment of stored cold water.

It's what I was taught at college Chris. Always assumed it was water regs...

 

[plumben]

Also that table can be translated on that page too if that helps

 

[Old Account]

Look at the table on this link Cold Water Storage per Occupant I don't think its 100% accurate but its close, from memory in domestic property its 127L per bedroom OR per person I can't remember I think its per person, so a 1bed flat that could have 2 people would be around 254L so the current 227L would be about right, the proper sizing is in the building regs part L (I think)

Top man appreciate too.
So I'll just leave it like it is changing like for like.

Thanks to all for your help

 

[plumben]

Top man appreciate too.
So I'll just leave it like it is changing like for like.

Thanks to all for your help

Like for like is usually the best and safest option

 

[Old Account]

Like for like is usually the best and safest option

True, I was just wondering if I it's possible to install a smaller one but now I know it wouldn't work for such flat

 

[chris watkins]

BS EN 806-2:2005 Design - (806 replaced 6700 a few years back)
19.1.4 Page 35
"For most dwellings where a constant supply at adequate pressure is a statutory requirement, a maximum capacity of 80 l per person normally resident should prove satisfactory. A larger capacity based on 130 l per person would be appropriate where cistern refilling normally takes place only during the night hours."

Before this it also states - "In determining the total capacity of cold water storage in the premises concerned, account shall be taken of:
a) the need to prevent stagnation by ensuring that water is held in storage for as short time as possible; and
b) the requirements of any associated water fittings and appliances, particularly where supply interruptions can cause damage to property or inconvenience to the user."