Flavel Castelle Installation, Maintenance And User Instructions page 14

2.3.4 The firebox mounting plate should then be secured to the fireplace
opening as created in section 2.3, via the mounting holes as indicated
below in figure 7.
Fig. 7
25mm
215mm
2.3.5 Drill minimum of 8 off holes to secure the firebox mounting plate
(14 off holes are provided in the mounting plate to allow a variety of
fixing positions) and secure the firebox mounting plate to the fireplace
opening. Use a minimum of eight fixing points to ensure a satisfactory
seal is achieved. It may be necessary to seal the plate with suitable
tape if required.
2.3.6 Remove the burner unit from the fire as shown overpage in figure 8.
430mm
305mm
610mm
12mm Base
Centre Hole
Only
14
500mm
245
mm
25mm