y plan wiring diagams

[opm electrical]

could anyone help me i have been working on a site where heating systems have been changed from y plan to combi and i am all for pulling the wires out of the ten way box and conecting them up to run a combi but i am stuffed when it comes to wiring a y plan or doing amy kind of electrical maintainance on one, ie: connecting new components into the ten way box,
any wiring diagrams would be a great help

 

[Guest123]

Hi.


http://www.electriciansforums.net/a...-advice-s-plan-wiring-heating-controls-1-.pdf