How to wire in a Glow Worm climapro rf?

I have purchased a climapro rf for a Glow worm combi boiler and in the manual is shows that you have to wire this into the ebus connection in the electrical cartridge
which is housed inside the casing of the boiler.
But I have looked all over inside the casing and cannot find this cartridge or anything that even resembles it either.
My boiler is a Glow worm 30cxi and before i purchased it i checked if this was compatiable and all the info i read said it was, so can someone help, am i missing something or can it not be used with this type.
Or have i got to get a professional to have a look for me.Help please.Thanks