Simplified S-Plan and Y-Plan Wiring diagrams

[Scott48]

My bad.

I would change common and 1 around on the cyl stat and I think it's a really good drawing

 

[FUSEServices]

Top job Jamchiv.

As you say, it's a schematic for competent people to follow, but there are always those people who would take the valve apart and solder on the extra Grey, Blue Orange and Earth from the next zone valve, to comply with the "photograph" of how it should be wired, and then tell you the cable should've been wired back to the wiring centre as it's easier!! Laugh out loud at some of the comments. You only put it on to be helpful, then get criticised!!

Well done anyway. I will be using your drawing to teach others as its really well put together and easy to follow. You have spent a lot of time drawing that - I know as I have done plenty with WORD!!

 

[Sparks415]

No not really mate, It just depends what boiler you have to connect up to the controls. For example some boilers will need just a switch line, neutral and earth. some boilers will need live, switch line, neutral and earth and some will need live, switch line, pump live, neutral and earth. If the boiler doesn't have pump live then the pump connects up with the oranges of the valves, if it does have a pump live connection then the pump connects to this in the boiler.

Don't forget John Ward has provided two methods for S plan (2 Port Valve) and Y Plan (3 port Valve).