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ma701ss

Planning to install an unvented water cylinder to supply 5 showers in a club. Potentially up to 25 people using the showers after matches, in turn obviously. 5 electric showers was my first thought because there's no chance of the water running out but presumably more expensive to run and the incoming supply is not enough to the building apparently. Is there a cylinder that could keep up with the demand, and would an electrically heated cylinder recover quicker?
 
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Think you out of depth here me old fruity. It's quite a challenge to design correctly. What's the flow rate and pressure? The Andrews water hater is basically a wall hung water heater. 10lpm on a 58c rise. You going to need a bank of them heaps. Basically just a jazzed up main multi point.

It's not a combo and it won't do ch. Nor will it last very long!
 
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Ermintrude said:
Think you out of depth here me old fruity. It's quite a challenge to design correctly. What's the flow rate and pressure? The Andrews water hater is basically a wall hung water heater. 10lpm on a 58c rise. You going to need a bank of them heaps. Basically just a jazzed up main multi point.

It's not a combo and it won't do ch. Nor will it last very long!
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Out of my depth yes you're right. I can't leave it to the heating engineer/contractor to design because they'd suggested a 250 litre Megaflo. I just need the basis for a proposal to take to the heating engineer, i.e. something that can be tweaked. The calculator asks for no. of shower heads, no. of people using, how long for, etc. The result was hot water per shower 20.6 litres, hot water used in peak period 527 litres (automatically adjusted to 25 mins, don't understand this). Based on 6 shower heads, 5 mins per shower, 25 people showering in total, 43 degrees temp, 72 degree rise. Why wouldn't one of these do the job? Can a heating engineer who doesn't usually fit these still calculate and do the job?
 
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Youd be worse with a pile of elec showers because with storage water its already there and it just tops up with the one cold inlet and heat recovery would be issue but theres a chance this would cope ok,, but if had a load of showers drawing off the main it just wouldnt cope,
 
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Thats a good idea now as electric would be crazy bills and each shower would need around 6-10 litre per minute per shower, although some of newer showers are limiting water usage to 6lpm
 
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Showers would die. Be one favourite on that was on all the time aswell.

If in comming mains is insufficient - less than 63mm dia I would suggest a bcws and unvented with municipal shower heads and 30s buttons and a decent secondary pump. .
 
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Youl have to check your in coming main pressure and its defonately have to be a storage system that you go for unless you had 2 incoming mains,,,, 2 storage tanks both twin coil with system boiler and solar panels, costly outlay but you could look for any grants if its for local grounds
 
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kris said:
Youl have to check your in coming main pressure and its defonately have to be a storage system that you go for unless you had 2 incoming mains,,,, 2 storage tanks both twin coil with system boiler and solar panels, costly outlay but you could look for any grants if its for local grounds
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Im thinking now perhaps two unvented 300 litre cylinders, for 5 showers (one will be electric, remote from the others) to provide up to 25 showers (5 mins each average). There shouldn't be any need for immediate recovery if 600 litres will do it. Is a pump necessary given the pressure from the cylinders?
 
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ma701ss said:
Im thinking now perhaps two unvented 300 litre cylinders, for 5 showers (one will be electric, remote from the others) to provide up to 25 showers (5 mins each average). There shouldn't be any need for immediate recovery if 600 litres will do it. Is a pump necessary given the pressure from the cylinders?
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What will you be using to heat the tanks , - the tanks have coils inside them if its indirect so do you have a primary heat source in place at the moment like a gas boiler ,,, what is there or is all this new?? you could use immersions and direct tanks but would need to set a timer on them for 1 day a week to keep lecy bill down
 
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steveb said:
i was reading it as pumping out not in
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There's a standard boiler installed, looks like a modern condensing boiler. Considering they were OK with installing 6 electric showers to begin with, if they now need to heat by immersion heaters then presumably the cost will be significantly less anyway.

Other than Megaflo, Baxi (Andrews) and ACV that others have mentioned, are there cheaper alternatives?
 
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ma701ss said:
There's a standard boiler installed, looks like a modern condensing boiler. Considering they were OK with installing 6 electric showers to begin with, if they now need to heat by immersion heaters then presumably the cost will be significantly less anyway.

Other than Megaflo, Baxi (Andrews) and ACV that others have mentioned, are there cheaper alternatives?
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There are loads of cheaper ones aswell , heres an ariston one ..

Buy Ariston Classico DIRECT Unvented Enamel Lined Steel Hot Water Cylinder 300 LITRE Online
 
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No your right ermi but aristons a good enuf brand and cyls are not like boilers with no moving parts its not like theyle break down often , so why pay 1000 quid when half price does same,
But on sayin that im a great believer in YOU GET WHAT U PAY FOR but dont think this applys here,
 
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