Shower pump from gravity feed tank

[markyuk]

So I have a a 100 litre copper tank, cold feed coming from the cold water tank and a worcester green star ri 18 bolier
The cold tank is about 1.5 metres above the shower
So my question is how long would the hot water last if I fitted a thermostatic shower and a shower pump.
I'm Re doing the bathroom and what a mixer shower but think I need a pump.
Not sure if I would need a Bigger copper tank.
I have seen the Mira low pressure mixers but if fitted a 1.5 bar pump would a high pressure mixer be better

Many thanks for your help

Mark

 

[mcmoby69]

I'd look at lifting the loft tanks first, shower pumps are noisy. How many people and how many showers per day?

 

[markyuk]

It's as high as it will go right at the peak of the roof.

Mark

 

[picasso]

Yea you will need a bigger tank/cistern weigh in the copper and it will probably pay for a new plastic 50 gallon tank/cistern

 

[markyuk]

Well I got a 50 gallon cold water tank. Don't want to have a 50 gallon hot water tank to heat really.

 

[picasso]

Sorry I misunderstood your post, a 100 litre hot water cylinder wont last very long with a pump, depends on how long you like your showers.

 

[markyuk]

Yer that my worry assume you can get bigger hot water tanks don't want to fork out for a megaflow really