Wiring a Nest E to replace a Honeywell BDR91 UK

[vfrvulcan]

Having seen the BDR91 was on the Google Nest compatibility list I ordered a Nest E.

Hit an issue when trying to wire it up which I can't resolve using the app.

Picture attached of current BDR91 wiring which goes to a British Gas BG330+ boiler

 The app tells me to isolate Live and Neutral wires as they're not required due to the Heat Link being battery powered. However, connector A on the right, which I believe is Common, is bridged to the Live wire on the left.

Do I connect the A to C on the Nest as suggested, which in effect is simply connecting the Live wire?

[MrVacca]

Hi @vfrvulcan - from what I understand, yes you will want to do that. I had to buy a power adapter but it appears yours won’t need that as long as you do what the app suggested. Keep us posted and good luck! 

[EdwardT]

Hi folks,

@MrVacca, thanks for the help!

@vfrvulcan, how's it going with your Nest Thermostat? Still need our help?

Thanks,

Edward

[Jake]

Hey there,

I wanted to check in and see if you are still in need of any help with your device. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

[vfrvulcan]

Now that I've had time to plumb it in over the weekend, happy to report its working fine, thanks for your help.

[Jake]

Hey vfrvulcan,

I am glad to hear that everything is working. I am going to keep the thread open for a couple of days, in case you have any questions from here. Please feel free to let me know.

Best regards,

Jake

[Jake]

Hey vfrvulcan,

I wanted to check in, and let you know that I will be locking the thread in 24 hours.

Best regards,

Jake

[vfrvulcan]

Thanks for the heads-up Jake,

Just seem to have one issue outstanding. In the (minimal) manual it suggests that whenever the Nest in calling for heat then the Icon will be illuminated on the Heat Link - I don't see this.

In other words, when I walk past the Heat Link there is no indication whether it is active or not.