http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,1650,en.pdf
Go to page 10.
Hi Fluffy,
The Beckett while the door can be opened should not be used with the door open therefore 225mm is the minimum from the front of the stove to a combustible material.
What distance are the walls going to be from the stove? The Becketts thermostat is at the back right hand side of the stove so you will need to be adjusting it from there so give yourself as much space as you can. Tiles will be fine or paint should also be fine depending on the distance.