ESBE valve in operation on a Vaillant.

Vaillant PDHW with Sensocomfort, VR70 and a VR40 for secondary circulation.
Running an ESBE mixer.

The towel radiators are heated via the Weather compensated Circuit and the HW circuit, the NRV’s prevent flow on either circuit when the other is providing the flow.

[scottk]

So stoked to have found this video! Literally in the process of installing my first pdhw with ufh and the Esbe valve on a Vaillant boiler/controls. Thankfully you have made it seem the sleepless nights will be worth it! Hopefully it all comes together. Thanks for the upload Tom

[jacbisgood]

Interesting setup mate. Do you have a high limit stat on the ufh to stop overheating on the ufh?

Also, did you not want to go down the pump group setup instead? I have a similar install soon but I'm limited for space, would having separate components potentially take up less space?

Which model ESBE mixer and actuator is that?

I'm enjoying the content mate, keep it up.

[Mikey]

So if you only had ufh and a cylinder you wouldn't need the normally open zone valve configuration as the mixing valve limits the temp for ufh whilst the boiler ramps up for hw demand?

[Anthony-dhty]

Hi tom do you have any advice on how to size an esbe mixing valve for a system?