Unit installation

7. WALL PREPARATION
7.1 Select appliance position.
The flue must be installed so that it is at right angles to the back panel of the fire all
round the flue circumference.
For timber framed buildings make sure that the flue opening will be between studs.
When being recessed into a non-combustible wall or builders opening the fire itself
should be fitted vertically against a flat wall. Where this is difficult to achieve due to
building inaccuracies care should be taken to ensure that the back of the fire is not
stressed in any way due to distortion of the appliance when tightening the fixing screws.
Where necessary, non-combustible packing pieces should be used to provide a
satisfactory fixing surface.
7.2 Constructing a recessed opening.
Under no circumstances is the fire to be recessed into timber frame constructions
or any other combustible wall.
The recess in the wall for the appliance should be within the sizes shown in figure 1.
The bottom of the recess should be at the same level as the finished floor in front of the
appliance.
A lintel may be required above the recess for the convection box. If in doubt, seek
expert building advice before commencing to cut the recess.
7.2.1 Fitting a lintel.
Whenever a lintel is required to support the recess in the inner leaf of a brick/blockwork
building, follow the method outlined below (See figure 9).
! The lintel should be either steel
(Catnic) or reinforced precast
concrete. It should be 750mm
long x 75mm deep x inner leaf
thickness.
! The opening should be, as near
as possible, centrally below a joint
in the inner leaf block.
! Cut out the opening for the
lintel.
! Where cutting through
masonry, drill pilot holes and then
cut out the slot using a mechanical
cutter. This will minimise damage
to the surrounding structure.
Page 15
INSTALLER GUIDE
Figure 9. Lintel installation