Install Nest E from Honeywell com901

[natopigro]

Good morning everyone,
I bought the Nest Thermostat E and I'm trying to install it instead of my Honeywywell (see photo).
I have a doubt about how to place the cables because I can't find an online reference on the AxByC cable nomenclature.

Can anyone help me?
Thanks in advance

 

[martygturner]

its on the back plate...the live is on a the neutral is on b and the switched feed for the boiler on off is on c

 

[RandomGrinch]

its on the back plate...the live is on a the neutral is on b and the switched feed for the boiler on off is on c

Sorry, that's incorrect
The diagram is slightly confusing.
A is Live
B is Normally open
C is normally closed

The rectangle in the diagram represents the boiler, with neutral connected to the boiler (...and the switched live coming from 'B' on the thermostat)

So for Nest thermostat E, you only have to connect A to 'C' (Common) and B to 'NO' (Normally Open) on the heatlink.

 

[natopigro]

Thank you very much. It worked! I was very unsecure about that

 

[RandomGrinch]

Thank you very much. It worked! I was very unsecure about that

Well done!