Help! Netatmo Wireless Thermostat installation on ideal mini c28

[JonnyHibbert]

(I did post this in the central heating section too, but i thought it might be seen more here...sorry if that's not allowed)

This was supposed to be simple, but I'm struggling to wire up Netatmo wireless relay to the boiler and the Netatmo forums are a ghost town.

Current setup is a wired thermostat onthe wall, that I want to disconnect entirely and replace with the wireless netatmo thermostat.

In the first image below is the default wiring before i touched anything.

The second image is the default with the red and black removed. I connected the netatmo relay wires brown and blue to A and B (marked myself in paint) which I believe is for power, and the two other wires into C and D, which I think is the thermostat controlls.

The relay lights up but the boiler does not ignite, either through hot water turning on or through pressing the relay button.

This is possibly being caused by built in control panel on the boiler?
The wiring and instructions for my boiler are found here
http://idealboilers.com/installer/wp-content/uploads/sites/2/2013/08/mini_is321.pdf

Can anyone spot what I might have done wrong?

 

[Specialist]

Where does the Grey cable go, is that the thermostat wire ?

Did you check system compatibility first ?

 

[JonnyHibbert]

Where does the Grey cable go, is that the thermostat wire ?

Did you check system compatibility first ?

I did check compatibility, and according the the Netatmo website it should work.

I'm unsure where the grey wire goes to be honest, it does not seem to be connected to anything - should there not be a wire going into the corresponding opposite terminal, between C and D for grey to be connected?

If it helps at all, this is the picture of the whole wiring:

 

[JonnyHibbert]

To clarify, here is the image from the instruction manual:

 

[Specialist]

Hi Johnny: Sorry I should have been more specific, the Grey cable with the Red / Black wires.

Have you correctly identified the wires in the old thermostat and wired the Netatamo to the control wires ?

 

[JonnyHibbert]

I am a 100% novice with anything electrical, even looking at a wiring diagram, so this has been a huge learning curve for me so far.

I believe I have identified the thermostat wires, which are the red and black wires that you can see in the first two images. I do not know for sure which is the control wire though - from what I've shown you so far, can you point me in the right place?

 

[Specialist]

In the wall thermostat that you removed, how many wires were there ?

 

[JonnyHibbert]

In the wall thermostat that you removed, how many wires were there ?

Two, Red and Black.

Just to clarify, the wall thermostat is currently still connected - i disconnected the red and black from the terminal in the first image, but did not touch the wall thermotat it's self. My plan was to leave it there incase i want to go back to a wall-thermo in the future.

 

[Specialist]

Hi Johnny: So what wires is the new stat connected to ? The installer manual shows it connected in place of the old stat and using the wiring from the old stat.

 

[JonnyHibbert]

I installed the wireless reciever and installed the blue and brown wires of the reciever into A and B in the first image, removing the wires that you cans see in the pic (the double blue and brown). This provided the power to the reciever as expected.

I then installed the two controller wires from the wireless reciever into C and D, or where the red and black wires had been previously. As far as I could understand the instructions, i thought that was correct.

The problem seems to be this setup does not pass the power through to the boiler, so it does not ignite even with the hot water tap being turned on.

 

[Specialist]

OK: The installation sheet I have from the Netatmo website only shows 2 wires connecting to the new thermostat not 4.
Maybe a dumb question but have you installed the batteries ?

 

[JonnyHibbert]

So i havent actually touched the thermostat part of the netatmo yet, only the wireless relay. In the instructions the relay/reciever should be able to turn the boiler on and off without connected to the thermostat. Also the hot water does not trigger the boiler to run when connected like i describe.

For clarity, the image below is the wires that come from the Netatmo reciever/relay. I connected the brown and blue, replacing the current brown/blue wires, and the black grey replaced the black/red, but that did not work and stopped the boiler igniting.

I keep coming back to this having something to do with the control pannel that is on the boiler, but I could be wrong. The below is the relevant part from my boiler manual, but im not sure how to translate this into what it actually is:

 

[Specialist]

Can you tell me what netatmo kit you've got ?, the instructions from their site show the relay as plug in.

 

[JonnyHibbert]

Yeah sure I should have clarfied this:

Netatmo Energy | Thermostat and Valves | Smart Heating - https://www.netatmo.com/en-GB/product/energy/thermostat/installation/

So option one is you replace the wired thermostat, which is where you plug the relay into the wall and wire the new netatmo into the wall replacing your old one. I think I could do this relativley easy, but it's not the setup I want.

I have been trying to do the "replace a wireless thermostat" option, but in this case I'm installing a wireless for the first time and removing the wired one. I thought that would be easy enough to do...

 

[Specialist]

Hi Johnny: So that's where the confusion happened, you've got Brown / Blue to the Left hand block on the relay ?