www.charltonandjenrick.co.uk
17
LT5674 (ISS 5)
SECTION TEN To Install the Appliance (installation instructions)
INSTALLING THE APPLIANCE INTO CAVITY WALL
(
When installing in a timber framed dwelling
reference must be made to the specific
installation requirements stated later in this
Section ‘Installing The Appliance In Timber
Framed Dwelling’).
Ensure it is a suitable outside wall
constructed
of
non-combustible
materials and that the flue position
meets the requirements previously
described in Section 8.
Mark a horizontal line on the wall at the intended hearth surface or appliance base height (50mm min for Hole
in Wall installation (the skirting board must be cut away from behind the fire).
Mark a vertical line on the wall at the intended centre of the appliance up from the horizontal line for a height
of 555mm.
Mark two more vertical lines 202mm either side of the centre line for a height of 555mm.
Mark a horizontal line at a height of 555mm above the hearth line, joining the two outside lines together.
Mark the position for a lintel above the top horizontal line.
Mark two short horizontal lines so they cross the centre line, one at 105mm and the second at 480mm above
hearth level line. These are the centre points for the air duct and flue holes.
Using a long masonry drill, make two pilot holes completely through the wall, ensure the holes are drilled
accurately at the centres and square to the wall both horizontally and vertically at the two cross points
previously marked.
Cut out the brickwork of the inner skin of the cavity wall for the lintel, and position and fix the lintel with
mortar.
Cut out the brickwork under the lintel, between the two outside vertical lines into the cavity. Ensure the cut-
out width is square, try the appliance into the opening.
Using 125mm (5”) core drill, cut two holes following the pilot holes, drill from the outside through to the cavity.
Remove any cavity insulation from the cut-
out opening and for a further 100mm into the
cavity gap each side and above.
Pack “Rockwool” around the sides and top of
the opening into the cavity for a depth of
100mm.
Lay the hearth if required so that it is
positioned correctly to the horizontal line.
Position and fix the back panel and surround
if required.
Offer the appliance into the opening and
mark through the gas pipe entry hole (see
connecting the gas supply later in this manual).
Pass a tape measure through the core-drilled holes and record the distance from the back of the spigots to
the surface of the outside wall.
FLOOR SURFACE
HEARTH SURFACE LINE
LINTEL SET
IN POSITION
CAVITY PACKED 100mm
DEEP W ITH ROCKW OOL
ALL FOUR SIDES
OUTER SKIN
OF WALL
125mm CORE
DRILLED HOLES
CUT OUT IN W ALL FOR
CAVITY RECESSED
INSTALLATIONS
MARKING OUT WALL FOR
CAVITY RECESSED
INSTALLATIONS
FLOOR SURFACE
202 mm
202 mm
480 mm
POSITION
OF PILOT
HOLE
5 5 5
m
m
CENTRE LINE OF
INSTALLATION
105 mm
POSITION
OF PILOT
HOLE
MARK POSITION
OF LINTEL
HEARTH SURFACE LINE
OR BASE LINE FOR
HOLE IN WALL (50mm min. from floor)
