Installation

Hi everyone! Iam new to this so hope this makes sense.. I purchased a Tado kit over a year ago and could not find the relevant info to install which is why it’s been forgotten about til now! so here’s hoping someone can help ! 

I have a Vaillant ecoTEC plus 831R1 combi boiler with no thermostat or timer it’s manually operated (on/off) I have plugged in the bridge and connect to internet and wall mounted the control, but as of yet not wIred. So this is my question can anyone point me in the right direction as to my next move on how to wire to boiler? Thanks for any advice in advance..