Vailant Ecotech 831 and mixer shower

[oldguy]

Done a quick search on this and struggling a little to understand what i should be looking for.

I have just had the Vailant installed, and want to now fit a new shower.

I need (i believe) a thermostatic mixer shower. The vailant apparantly delivers 12.7 ltrs/min at 35 degrees.

When i choose a shower what should i be asking / checking that it will suit the boiler. I know i have "good" cold water mains pressure.

thanks for any help...

 

[Agile]

The boiler raises 12.7 li/min by 35°C.

Most showers will work as long as they dont need a flow rate of over about 10 li/min. Please realise that a combi only delivers hot water to one outlet at a time so if anyone else turns on a tap etc. it may affect the shower.

I dont likel thermostatic showers on combis as they can sometimes interact with the boiler but thats not such a common problem with the latest boilers.

A good combi will control the output temperature within +/- 1°C when its operating within its capabilities.

Tony

 

[oldguy]

Thanks,

So i don't have to have the thermostatic function......?

I guess my new boiler is a "good" combi ?

 

[dreadnoughtheating]

A Vaillant? Good? - I swear by them. would fit no other given the choice.

Others may well swear at them.

DH

Tony at Agile has a point about marrying a thermo shower to older 'non - modulating' combi's, which can bring about a real hot-cold-hot-cold ahower experience, yours however should be fine, just make sur the shower valve isolation valves are 'full-bore' to maximise the flow to the valve itself.

 

[gas4you]

I always fit the Mira Excel on the rare occasions that I fit showers to combi's.

Never had any so called problems.

As long as it is a mains pressure, or rated for combi, fit what you want.

 

[tony73]

Got to agree with DNH.Installers are leaving Vaillant because of their customer service.Having looked inside Broag and Viessmann of late,Vaillant are far better engineered boilers.Still my choice of boiler and a doddle to fit.

 

[kevindgas]

the ecotec 831 is our most common fit and despite what agile says will deliver good hot water to a shower and other outlets simultainiously

the mixer shower must be suitable for mains pressure.

B&Q sell a reasonable quality "Gainsborough" exposed valve shower if your budget is tight

we have fitted a couple one with an 831 and another with a Halstead Eden.