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Back-filling the chimney and lining should only be
undertaken when the stove is securely fixed in its final
position.
Insulating at the sides and back of the stove
If you are not using a chimney lining then any gaps at
the back and sides of the stove and the fireplace
aperture should be filled with non-combustible
insulation material such as rockwool or vermiculite.
This will not only improve the efficiency of the stove
but also help avoid the potential build-up of
combustible soot along the sides – this is an especially
important requirement if you are not using a flue liner.
Some installations may require you to do this by
removing the stove baffle plate and feeding the
insulating material through the stove flueway and
then manipulating it with your hand so that it
completely fills the voids at the sides and back of the
inset stove.
Attaching the stove to the fireplace
There are three ways that the Alpha Inset stove can
be secured to the fireplace or fire surround depending
on the particular opening. To ensure that you create
a firm and safe fix it may be appropriate to combine
two of these methods.
1 Base fixing Firstly, remove the ash pan and grate
carrier. You will see a pre-drilled hole in the centre of
the base of the stove. When using this method,
carefully push the insert into position, locating it
precisely in the fireplace opening before marking the
position of the drill hole on the hearth through the
stove base. Allow for some compression of the rope
seal at the back of the stove to ensure a good seal
between the stove and the fireplace front. Remove
the stove and then drill an 8mm diameter hole in
the hearth. Fit the steel plug (or alternative) in the
hole and carefully re-locate the stove. Fix the screw
through base hole. Be sure to use the correct drill bit
so as not to damage or crack any decorative hearth
plate. See below
Remove fire grate to
access base fixing hole
2 Clamp fixing There is a specially designed
locking screw and clamping bar supplied with your
new stove. To use this method remove the fire bricks
which will then allow you remove the baffle plate
inside the top of the stove by sliding it forward and
dropping it down and out of the way.
Push the locking screw through the hole in the centre
front of the inset stove (see photo below). Please note
that this bar may need to be reduced in length if you
The clamp grip is attached to the clamp bolt
from inside the stove and then located to lock
against the lintel or other appropriate fixing
point when it is tightened
are also using a flue liner. Put your hand with the
clamping bar inside the stove and out through the
flue outlet at the top of the stove. Screw the locking
screw into the clamping bar. Position the locking bar
so that it grips against the top of the inside of the
fireplace lintel and turn the screw to tighten, this will
pull the stove tight against the fireplace. Replace
baffle, grate, side and back bricks.
16
Clamp Fixing:
Bar and pre-drilled hole
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