Unit installation
into plasterboard.
Place dust sheets on the floor and over any furnishings etc.
Place the template against the wall. Make sure that the centre of the flue hole is
not less than the minimum shown in figure 6.
Pierce the centre of the screw fixing holes and the flue hole and mark the
positions on the wall. Remove the template.
Cut the hole for the flue
unit. Make sure that it is
straight and level. Though a
hammer and chisel can be
used, using a core drill is by
far the quickest and simplest
method for normal brickwork.
7.2 Core Drilling
Drill a pilot hole through
the wall. Inspect the hole to
ensure that it is in the
brickwork and not in mortar. If
it is in mortar, it is advisable to
reposition the hole
approximately 25mm away
(making sure that the
minimum side clearances and
height are complied with).
Remember to reposition the
screw fixing holes.
Drill the flue hole with a 6in. (152mm) core drill. Where practical, it is
recommended that the hole is drilled from inside the building to about half the wall
depth with the remainder drilled from outside. This ensures that the edges of the hole
are clean on both sides.
7.3 Hammer & Chisel Cutting
Mark a 152mm (6in) diameter circle for the flue hole. Chisel out the area marked.
It may be necessary to make good both the internal and external wall faces. To
achieve a neat finish and to make any future removal of the flue unit easier, it is
recommended that a cardboard cylinder is formed around the flue unit and inserted in
the hole while making good. Remove the cardboard cylinder after making good.
Recheck the screw fixing holes relative to the flue hole.
Drill the four fixing holes to a minimum depth of 42mm using a suitably sized
masonry drill for the wall plugs supplied.
Insert the four wall plugs supplied.
Remove any combustible wall cladding material from the area shown in figure 7.
Page 16
© Baxi Heating U.K. Limited 2010.
Figure 7. Removal of combustible cladding.
INSTALLER GUIDE