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Installing Nest 3rd Gen

£0.00 @ Nest
Hello. I bought the 3rd Gen Nest on Friday, just looking to install the heat link and upon taking my old controller off, found this: https://flic.kr/p/PCQiXm It's a Logic 15, regular, condensing…
Ronaldeano Avatar
2m, 4w agoPosted 2 months, 4 weeks ago
Hello. I bought the 3rd Gen Nest on Friday, just looking to install the heat link and upon taking my old controller off, found this:

https://flic.kr/p/PCQiXm

It's a Logic 15, regular, condensing boiler with hot water cylinder.

I'm a complete novice with this kind of stuff, could anyone kindly help me with wiring up the nest heat link?

Thanks
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Ronaldeano Avatar
2m, 4w agoPosted 2 months, 4 weeks ago
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#1
I fitted mine a couple of weeks back, its pretty simple really, i ended up removing my old programmer and wiring altogether and wiring the heatlink up to to the junction box by the boiler.

on the rear of the programmer should be a diagram that shows what it what, that's the best place to start
#2
My junction box is upstairs with the water cylinder, so wasn't sure if installing it there would cause problems with connectivity.
#4
Thanks Jizzer. Might sound stupid but why are there 3 live cables and how would I know which one to connect to the new terminal?
#5
connect all 3 to the live terminal on the heat link.......they will link out to other devices on the heating system


same with neutrals N

Edited By: jizzer on Nov 28, 2016 20:07
#6
What controller is it ...any markings on front or rear of old controller
#7
ah okay, it's a danfoss controller.
#8
How did you get on, as I'm looking to change from a wireless danfoss
#9
Haven't had a chance to do it yet, hoping to have a go today, I've been getting some advice on the diynot forum, I'll link to it later on as it might be useful to you too.

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