HELLPPP! Worcester 28i RSF and Honeywell CM927

[niklarse]

Well, I have now tried what seems like 2000 combinations of wires, and nothing seems to make sense. I found a couple of references on this site, and they both don't seem to add up or match my boiler / themostat.

I have a worcester 28i Bosh RSF combination boiler. It has terminals CN, CI and CL (these had the manual timer in) with RN, RI and RL (manual says for a thermostat)
http://books.google.co.uk (search for 28i rsf wiring)

Honeywell timer has N L L (link) and A B C.

http://content.honeywell.com/uk/homes/Technical/CM/CM920 Installation Guide.pdf

Can anyone help me and give me some wiring advice - I a very fed up adn stuck![/url]

 

[gremlin16]

RF stat. Follow diagram B for combi.
You need L & N supply to receiver.
2 wires need to be connected to A & B and run to block X2 on boiler

Just remember boiler also needs L & N supply to block X1

 

[bengasman]

Just compare the boiler installation manual with the indications of the thermostat manual.
If you can't work it out, you'd be better of farming the job out to someone; you are dealing with 230V, so not without risk.