Fair enough. In that case, if (despite what many people would probably do) the manufacturers "do not intend" that the appliance be hard-wired, then you're seemingly right in saying that. per that guidance, it probably should have been supplied with a fitted plug (for the like of me to cut off and throw away!).Here is a quote from the guidance: Excluded from the regulations....You may be right, although I'm not sure of the scope of the regulations and guidance - do they perhaps only relate to 'portable' items?
Any appliance which is intended to be permanently connected to the
fixed wiring of the mains system other than by means of a plug and
socket.
My reading of the MI specifically mentions the plug, IMHO, they should have provided one fitted.
Kind Regards, John