What Size Cold Water Cistern in Loft?

[easyt]

At present, in the loft I have two storage cisterns. Each are about 64 lires. One fed the cold water to the bath through 3/4 pipe. The other supplied the hot water cylinder. The hot water cylinder is about 125 litre.

The bath is being replaced by a shower.

I want to have the existing two cisterns replaced. I thought that I could just have the one tank to supply cold to the shower via 15mm pipe and also to supply the hot water cylinder.

Any advantage in two tanks?

What size tank would you suggest ?

 

[Spudhater]

are you having the shower pumped or gravity..

 

[easyt]

Shower will be gravity fed. I am in bungalow and cisterns are about 400mm to water fill line and raised about 900 above ceiling joists.

 

[turnpin]

under BS6700 the min requirement is 230 ltrs supplying hot and cold outlets to domestic dwellingsregards turnpin

 

[easyt]

under BS6700 the min requirement is 230 ltrs supplying hot and cold outlets to domestic dwellingsregards turnpin

That's a helluva lot of water Turnpin.
My existing tanks are about 400mm cube (to water level so 64 litre. As they are on stages aligned with each other but with a 400 gap (aprox. I could board over them to provide a stage for a bigger tank I suppose.

 

[turnpin]

obviously you can only put in what will fit in your space and what can go through your access hatch look up poly tanks range of "coffin tanks" you can also have tanks made but may prove to be expensive also take into account extra weight good luckregards turnpin

 

[fuzzy]

230 litres