Valiant System Boiler - What controls?

Your installer should really be advising on the controls, what is the setup of the rest of the system ?

I have a 630 system boiler, Vaillant Unistor unvented cylinder, radiator zone and a UFH zone.

To control this I have a Vaillant 470F for the radiator zone and controlling the setup of the whole system, VR81 thermostat for the UFH zone, VR61/2 control centre to control the motorised valves/mixer valve.

If you are just going to run a cylinder and single or dual zone without UFH you would need a 470F controller, VR66 control centre for the motorised valves and a VR81 for the additional zone (For one zone you can drop the VR81)

A combination of the new boiler/cylinder and weather compensation knocked 30% off our gas usage compared to our old water store combi boiler. The main benefit of using Vaillant controls is that it allows you to run separate flow temperatures for the hot water/heating which also allows weather compensation with the 470F controller where the flow temp is regulated against the outside temperature, so you can have a lower flow temp for the heating (return temp of under 55c has the boiler at peak efficiency) and a higher temp for the hot water to allow the rapid recharge of the cylinder, non Vaillant controls only allow one flow temp for both.
 
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We have an unvented system, not "zones" as such, or UFH to worry about. A simple heating system with hot water.

Currently the timer allows 2 x settings per day for hot water and the same for heating.

If this was more automated or intelligent, that would be good. I see that there is a valiant weather stat too, which looks quite good.

Currently, he is thinking this:

http://www.deltadore.com/uk/en/wire.../programmable-thermostats/tybox-827-w-rf.html

Which looks a bit meh ;)
 
You would need the Vaillant 470F and VR66 control centre, the 470F is the weather compensation controller.

http://www.plumbnation.co.uk/site/v...-0020108137/?gclid=CMnf356_x8ACFSXKtAodKwsAWQ

Ideally you want to match this with the Vaillant Unistor unvented cylinder so you can attach the VR10 temperature probe directly to it and this allows you to control the hot water temperature directly from the 470F this method offers more efficient heat up of the cylinder. If you don't have a Vaillant cylinder you can still connect a standard cylinder stat to the VR66 control centre.
 
Dear gurus,
I am completely amateur on this, but my builders is even more. We have been down by the plumber who has escaped (and got Gas Safe unregistered).

VR66 and VRC470. EcoPlus 615. Unvented cylinder.

At the moment I have a DHW zone and another zone with 7 rads. 7 stats, one per room.

I am adding two UFH circuits - ground floor- concrete. Could someone please give me some guidance about to to extend the S-Plan? How do I force the boiler to do 40-50degrees water for the UFH, while 80degrees for the rads? Please, any help is welcomed... So grateful, in advance.
 
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