For the benefit of those, like me, who did not understand the term FTV. From what I read, these channels are only available using a Sky digibox.
It should be the same as recording any Sky channel; connect the scart output of the digibox to the AV-IN of the recorder.
Important: Ensure that the recorder does have a scart AV-IN; not all do. I regularly record Sky on my Panasonic HDD/DVD recorder using the method above. You do not need a separate tuner to record Sky in this manner.