thanks fellas for welcoming me to the forum -

[nitrodave]

I have a wee plumbing & heating business here in antrim town NI - all good but one thing fills me with dread which is the wiring in a 2/3 channel central heating system - hoping I may be able to tap into your superior knowledge

 

[Spoon]

Welcome to the asylum mate.
Have a search for the subject in here, I'm sure there are quite a few threads on it.

 

[Lister1987]

Hi nitrodave and Welcome.

You may find this link useful to your needs;

Central Heating Control Wiring

Wiring diagrams and information regarding central heating control wiring

www.flameport.com

It goes over the various heating setups; S plan, Y Plan etc as well as conversion to IOT systems such as Nest and Hive.