Connect HeatMiser UH8 to Vaillant system boiler.

[GG1]

Hello everyone,

Could do with some advice please

This is my current setup:

Vaillant ecotec plus 637 system boiler
Unistor unvented cylinder
Vr66 wiring centre
Vrc 470f
S plan system

Now I have just had underfloor heating installed and a HeatMiser UH8 wiring centre, a new motorised valve for the underfloor heating has been installed, but none of it has been wired up yet.

I also want to add a new Nest thermostat 3rd generation to control my hot water and central heating and do away with the VRC 470f. From my understanding I would have to do away with the VR66 wiring centre. My underfloor heating will be controlled via HeatMiser slim thermostats and actuators.

My questions are what would be the preferable way to connect all this up, use just the HeatMiser UH8 or have a standard S plan wiring centre setup and then connect to that?

Also does anyone have any wiring schematics to achieve this?

Any help would be very much appreciated.

Thank you in advance.

 

[Venkat]

Hi,
Did you find a solution as we are also having the same query.
If you have a solution, can you please reply me here