Hello,

We have a wiki page he -

http://wiki.diyfaq.org.uk/index.php?...s_and_Zonin g

with details of the different arrangements for domestic central heating.
I had prepared wiring diagrams for the site and also for download as a
pdf: -

http://www.diyfaq.org.uk/docs/Sundial-Plans-Rev1c.pdf
http://www.diyfaq.org.uk/docs/Sundial-Wiring-Rev1c.pdf

Unfortunately, I made a transcription error in the wiring diagram for
Y-plan which is not obvious and which would cause incorrect operation of
the system if implemented. Fortunately, someone spotted the error and
posted a note on the wiki.

I have now corrected the error in the Y-plan wiring diagram. If you have
previously downloaded the image of the Y-plan wiring diagram or the
pdf's (at Rev 1b), then you should discard them and re-download the
revised items (at Rev 1c). Please pass on to anybody you you may have
emailed the pdf's to.

Thanks to whoever spotted the mistake and to Mr Rumm for updating the
the wiki.


Cheers,
Dave Osborne