Dry Stove Installation Guide
3.2
Combustible Materials
Please view the product sheet which accompanied your stove for specific
minimum distances to combustible measurements.
Ideally, adjacent walls should be of suitable non-combustible construction,
preferably brickwork.
In large fireplaces take care that any supporting beam is protected by a
13mm sheet of heat resistant fire board spaced 12mm off the surface with
strips of non-combustible material. Make sure that there is a gap between
an un-insulated flue system and any combustible material. This gap must be
at least three times the outside diameter of the flue pipe, or 1.5X the flue
diameter to non combustible surfaces. Please consult the flue manufacturers
specification for insulated flues.
3.3
Air for Combustion
All stoves require ventilation to burn safely and correctly. There are a number
of requirements that need to be met when installing a stove, for example,
allowing for the permeability of the house (air permeability is the general
seepage of air into the house via air vents, doors and windows etc.)
There must always be a permanent means of providing air for combustion
into the room in which the stove is installed. Air starvation will result in poor flue
draw and may cause smoke to leak into the room.
For all installations it is recommended that a permanent vent with a total free
area of at least 550mm
2
for every kW above 5kW should be connected directly
to the outside air. Installations in properties built after 2008 should have their vent
increased by a further 330mm
2
for each of the the first 5kW. Alternatively this air
can be supplied through an external wall of an adjacent room, which itself has
to be connected to the room the appliance is installed by a permanent vent
of the same size.
Note: If the appliance is fitted with a draught stabiliser (or if one is fitted to the
flue pipe or chimney in the same room as the appliance) then the permanent
air entry opening (or openings) should be increased by 300mm
2
for each kW
of rated output up to 5kW and an additional 850mm
2
for each kW output over
5kW.
If there is more than one appliance in the property then each appliance
must be supplied with adequate combustion air so that all appliances can be
lit simultaneously.
BK545 Rev06
3
