Yes another Vaillant boiler wiring question :)
sorry to add to the large list of posts about Vaillant boilers.
So I have my tado (v3+) wired room thermostat connected direct to my Vaillant ecoTEC plus 837.
All working fine on/off does what it needs to do but its just relay mode (I think thats what its called), was hoping to get some intelligence into the boiler by hooking it up to the bus.
Am I right in that its just a case of plugging the existing wires into the + & - on the boilers bus ports, then on the tado backplate connect the two wires to the + & - on the right side of the backplate, then changing the mode to D07 on the thermostat itself?
I have seen posts about bridging but I can’t figure out if this is needed purely if using the extension kit or not. I don’t have the extension kit. Some people do the bridging on the 230V side, some on the 24V side.
attached is some pictures of how it looks currently (and working in relay mode) to help (hopefully).
Thanks in advance for any help that can be provided.