Inis Oirr MK2 Multifuel Boiler stove
11
unless adjacent fireproofing fitted. The
stove positioning and hearth size are
governed by building regulations for
class 1 appliances. The hearth must
extend 300mm to the front of the stove,
and by 150mm to the sides of the stove.
The installation must allow good air
circulation around the stove to maximise
heat transfer to the room and to avoid
the fireplace overheating. To achieve
this, at least an air gap of 300mm above
the stove and 150mm either side should
suffice.
Please note that in an installation with
a wooded mantelpiece or wood beam, a
greater air gap of up to 650mm, or the
use of appropriate shielding should be
fitted. Building regulations should also
be checked in this regard.
Chimney
This stove is not suitable for a shared
flue arrangement.
Chimneys must satisfy standard EN
15287:2007 and Building Regulations
Approved document J.
A draft test should always be performed
prior to the fitting of the stove to
ensure that a proper draught in the
chimney is present (20PA Constant). A
chimney height of at least 4m from the
top of the stove must be used. The
chimney diameter must be at least 153mm.
The chimney must be in good condition,
be cleaned and free from cracks and
blockages.
The chimney must not have too great a
cross sectional area and if it is (Max
200mm Diameter), the chimney should be
lined with a suitable flue liner for
solid fuel. All chimneys and or flues
used must be sealed for the best
possible performance.
If a chimney is not present, then a
prefabricated block chimney or twin
walled flue can be installed.
The draught in the chimney must be at
least 20 Pa when warn and must not
suffer from down draughts and if there
is an excessive draw in the chimney a
draught stabiliser should be fitted. If
a draught stabiliser is installed please
ensure more air ventilation is provided
into the room. If any doubt exists
please contact a chimney expert.
In some cases although quite rare a
chimney will not produce a sufficient
and stable draught and the fitting of
the stove to this chimney will not
produce satisfactory clean and proper
output. It is very important to examine
alternatives before connecting the stove
in this case.
Connection to flues
Building Regulations Approved Part J
must be adhered to installing a
fabricated flue system for the stove.
When installing the stove to the chimney
care should be taken to assure that the
chimney can be swept and soot removed
properly and easily. If the stove is to
be connected using the top flue outlet
the chimney can be swept through the
stove, however for rear flue outlet
connections, it will most often require
the fitting of a soot door. A number of
flue and soot door arrangements are
possible and the advice of a qualified
chimney expert should be sought.
