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Discuss Nest Install zoned system in the Plumbing Zone area at PlumbersForums.net

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Hello all,

Just hoping to get some wiring advice on a nest system for my zoned central heating. (new house so knowledge of existing setup is limited).

Right i have a ideal logic es35 boiler in the utility room. With a white wire connected going into the wall.

This then reappears upstairs in the airing cupboard in a junction box with a block connector.

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Which in turn is connected to two danfoss zone valves, one for downstairs, one for upstairs.

These both go to their own danfoss tp4000 (i think, could be 5000) thermostats.

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As you can see looks simple enough, but being a diyer there are no labels for each wire coming from the boiler.

A couple of questions.

1. do i have the full circuit here? or will there be anything ive missed?
2. will this work with a nest (cant use compatibility checker with no wire labels)
3. i know i need two nest's, where would i cut into the circuit? between each valve and the junction box?
4. each thermostat has a 3 core and earth cable run them, currently using only the black and brown with grey unused and earth. could i use this pre run cable for the 12v supply from the heatlink to the nest thermostat?
5. silly question .... which wires should i connect and where to the nest heatlink, already guessing a get a plumber response for this question.

im looking for info mainly, my uncles a plumber and i just like to know how my house is setup so any advice would be great for my knowledge and to pass onto my uncle (hes doing it for a beer so want to make it painless if i can)
 
It's in an s plan + set up

TBH if your unsure get a sparky or heating engy to wire it in

IMG_1417.GIF


Ignore where it says cylinder stat on my pic

But it gives you an idea of what wires do what
 
Probably worth every penny to get a recognised Nest Installer to do it for you and give you peace of mind it is done properly.
 
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