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Wiring Configuration Tado Controller/Sonoff Temperature Control

I have read several posts regarding the desire to have temperature control for hot water through the Tado controller but believe this is currently not possible.

As an alternative I am thinking of purchasing the SONOFF TH316 (the upgraded TH10/16 version) with temperature/humidity sensor to control my hot water.

I currently have my Tado Controller configured to control my hot water (on/off) on a 'Y' plan system and would like to ask for guidance on how to integrate the SONOFF TH316 into this system.

If my understanding is correct I believe I need to turn off the Tado hot water control and then add the SONOFF TH316 to my 'Y' system so the hot water is controlled by that device. I just need to confirm how I would wire this into the system.

My wiring plan is shown below.

Thanks for any help you can provide.