New hot water/heating system

[james2006]

I am renovating my home and thought it would be a good idea to update my hot water systemwhilst the house is in peices.

The house is 4 bed,2 bathroom. Pressure is 3 bar on static test, 0.7 bar when I teat the pressure with a trap running and flow rate is 13l/min.

I have ruled combi out. Thinking about a medium sized tank vented or unvented system. Would appreciate any thoughts. Cheers

 

[John506]

How many people in house?
How many kids?
How many people wanting hot water at the same time?
How many baths a night?
How much hot water do you require?

 

[james2006]

4-6 adults in the house. All professionals who what showers in the morning at 6-8am. One ensuite shower (yet to be constructed), the other is a bathroom with shower over the bath. Baths are rare. Lots of people use the water at the same time etc.

Appreciate your thoughts.

Cheers

 

[DP]

James a combi boiler will supply (even minimum sized one) sufficient hot water for one outlet be it a tap or a shower.

Bigger combi will supply more hot water but running two outlets will be unsatisfactory. Fitting flow regulators may help as boiler then has to deliver only, say 6/l to each shower and boiler rated 12l/ minute capacity could do that unless someone ran another hot tap.

In you situation I would instal an unvented cylinder run from a combi with combi supplying HW to the second shower.

 

[mickyg]

with such poor pressure and flow, combis and unvented systems are out the question unless you invest in improving it.
Otherwise you'll be better off with a vented tank, storage tank in loft and shower pump.