DeDietrich GT 123 A Installation And Maintenance Manual page 14

Step seven
Fix the control panel
Fix the lower front part of the control panel onto the cross bar
using two self tapping screws.
Fix the top part of the control panel using the black screw for
plastic supplied for this purpose.
14
Fix the back of the control panel on the top of the boiler using the
3.9x32 self tapping screw+ serrated washer.
GT 120 A - GT 1200 A 09/02/08 - 94863361 - 85784009D