mains water accumulators

[Whyme]

Anybody familiar with fitting and sizing these. looked at a job (not in depth just thinking it over before getting too involved) it has 3 showers, 1 bath and two basin hot taps running off two shower pumps. The problem seems that the float valve cant keep up with filling the tanks (its a dribble at best, not blocked or owt just rubbish). the whole house has dire pressure like many in that area. the shower pumps end up beating the two tanks strapped together, pulling air in and playing up. also there's no room at all in the apex of the house to fit bigger tanks. just thinking would one aid a bigger float valve..Got a nasty feeling it would have to be massive.

 

[Killy Bing]

How many lpm are you getting currently?

salamander homeboost could be an option as you'll be pulling 12lpm from the mains then.

 

[BLOD]

If you've got enough mains pressure & flow stick in an extra ball valve in the storage tank or one larger one.

 

[Whyme]

It was a quick nip round to see why shower pumps were airy so havent got that involved to test the lpm tbh. it is very poor. as is the whole area. Would stick another float on but need it beefed up somehow. Would that home boost be just for the tanks or could it cope with the whole house (toilets sink utilities etc as well) ?

 

[josh]

With this particular job I would agree with Blod and try adding another float first, if pressure/flow is that poor try changing the orifice to low pressure ones if it isn't just a failing float valve.
Have fitted a salamander home boost and wasn't that impressed to be honest, quite noisy. Have spoke to the salamander technical on their touring bus and if the incoming main is 1/2inch or furred up it will struggle to pull the desired flow rate through.

I don't think accumulators are the answer for this job, expensive fix!
You size them to the same amount of hot water stored, so e.g 210litre cyl so will need a 210L accumulator or 2 to match equivalent volume, are a few different variations to piping them up.
Got pics of home boost and a accumulator job on my flickr pics below in signature.