S plan versus Y Plan

[picasso]

vaguely remember reading in one of the manufacturers instructions that a three port was sufficient up to (about) 24kw, although I have to say if bg are recommending around 18kw who am I to argue , I prefer s plan the wiring is simpler and its easier to fault find.

 

[matt1e]

vaguely remember reading in one of the manufacturers instructions that a three port was sufficient up to (about) 24kw, although I have to say if bg are recommending around 18kw who am I to argue , I prefer s plan the wiring is simpler and its easier to fault find.

mmm interesting, I've never come across that before, I'll have to do a google
I agree about s-plan though

 

[picasso]

http://www.farnell.com/datasheets/1784.pdf

found this but not sure if the 26kw is for the 28mm or the 22mm.