We have a WB 24 CDI combi that doesn't have an externally mounted
room stat fitted, although one can be connected.

All of the radiators have stats on - am I right to assume that the
boiler has an internal stat that senses the (heating) water temperature
as it flows though the system and adjusts dependant on how high up
front panel knob is turned? - Or does the water just get heated to a
higher temperature irrespective of the heat lost via the radiators?

I'm wondering if there are any advantages to having a room stat for
this boiler.

Thanks.