How to add a T87 to an existing system?

[DorrisMancer]

In a room with 2 rads the temperature is currently being sensed by one of the HR92s and I want to replace the sensor with a T87 wall stat. I did it last year in a different room but can't remember what I did (I must be getting senile!) and can't find any guidance on the web. Please could someone aid my (currently Covid-positive!) brain.

[kevinsmart]

See the T87RF section here:

https://theevohomeshop.co.uk/content/11-evohome-help

[bruce_miranda]

In the Evohome installer's menu in that zone, just replace the sensor shown with your T87 sensor.

[DorrisMancer]

Thanks!
In case anyone else has the same question (and for when I need to do it again and have forgotten!):

1. clear all T87 bindings by touching the lower left of the faceplate for 10+ seconds, until "bo" appears, then touch the lower left area again until the wireless icon disappears from the top right of the display
2. if the link symbol is present on the T87 display (showing a link to an RFG100) it seems that it's necessary to clear this from the RFG100 end by powering it up and pressing the button underneath until the link light goes out, shortly afterwards the link symbol disappears from the T87
3. enter the set-up menu on the controller, then zone configuration, then highlight the zone of interest and change the sensor to "evohome controller" then change it back to "remote sensor" when it will ask to bind
4. touch the lower left of the T87 faceplate for 10+ seconds until "bo" appears, turn the dial until "Co" appears and then briefly touch the left touch area and binding should occur.

I hope that helps someone. Let me know if I've mis-typed anything.

(OOI, when turning the T87 dial beyond Co it shows Hc - wassat for?)