I have bought a Ferroli Radio Thermostat Clock (Part No. 30800009) to fit to my Ferroli Optimax HE Plus 31C. I was told by somebody that it was very easy. I've found the installation and User Instructions online and the picture is the same as the one I have but in the instructions it only shows the sender unit that wires into the boiler as having four connectors whereas the one I have has five so I'm not sure which to connect. Does anyone have any advice on this

Barry, January 2016

Thanks. I'll do that.

Barry, January 2016

I assume this is the manual:

http://www.ferroli.co.uk/wp-content/uploads/brochures/Radio-Thermostat-Clock-30800009-Instructions.pdf

Why not contact Ferroli and ask the maker directly, rather than a bunch of people indistinguishable from "Some bloke in a pub"? See the back page or http://www.ferroli.co.uk/contact-us/ Why not email them a clear photo of your device with your question?

XXX, January 2016