Wiring for nest

[wannabe1st]

 

 

 

 

Hi all,

 I want to wire the heat link to the boiler and I have the following wiring right now (EPH receiver). This one is connected with a wireless one.
Any idea how I can wire these wires in the heat link? From what I see I have the following:

Blue one going on N

Red and dark grey going on L

Black on Com (2)

Light grey on On (1)

|have attached some pic in case it help. Thanks a lot.

P.S.: tried to call a plumber but the first one available is at the end of January:(

[wannabe1st]

Hi!

I have opened the whole thing in the end to have a better view at the cables and actually the situation is this.
There are two cables. One combing from a fuse and one coming from the boiler.

Boiler cable:
Light grey > 3
Black >2
Light brown (reddish) > L
Light blue > N
Yellow with a green stripe > goes in some sort of casing with the yellow cable from the fuse

Fuse cable:
Brown > L
Dark blue > N
Yellow with a green stripe > goes in some sort of casing with the yellow cable from the boiler

So I have:
3 - Light Grey
2 - Black
L - Light brown - reddish (boiler) and Brown (fuse cable)
N - Light blue (boiler) and Dark blue (fuse)
That small casing - Yellow with green stripe (Boiler) and Yellow with green stripe (fuse)

https://imgur.io/a/fllqoej