Cassette Stove Installation Guide
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.
The positioning of any air vent must be so that it cannot be liable to blockage
or obstruction. Ideally it should also be positioned where it is unlikely to cause a
cold draught. It should not be positioned in the fireplace recess.
For more detailed guidelines on required ventilation sizes please refer
to the Document J Building Regulations (Combustion Appliances) at the
www.planningportal.gov.uk website.
If you plan to use an external air supply on a suitable stove, and have bought
the appropriate Arada External Air Supply Kit, please refer to the instructions
included with the kit on how to install it.
The accompanying stove technical product sheet states whether or not your
appliance is compatible with a Direct Air Supply Kit.
BK605 Rev02
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