en3N 2 Condens : 664Y5000 • CENFRNLESITDEPLRUTABLE OF CONTENTSCOMMISSIONING ..................................................................................................................29Commissioning safety instructions ....................................................................................... 29Tools required for commissioning ........................................................................................ 29Checks before bringing into service.................................................................................... 29Preliminary filling of the heating system ............................................................................30Starting the boiler ......................................................................................................................30Full flush of the heating system .............................................................................................30MAINTENANCE.......................................................................................................................31Safety instructions for maintenance..................................................................................... 31Regular check ............................................................................................................................... 31Cleaning the combustion assembly ..................................................................................... 32Inspection of safety devices ................................................................................................... 33Draining of the boiler ................................................................................................................ 33Commissioning after maintenance ....................................................................................... 33DECLARATION OF CONFORMITY - CE ...................................................................34ROYAL DECREE DECLARATION OF CONFORMITY 17/07/2009 - BE .....35