English
13
H07024510 / DT2000575 - Rev. 00
To ensure trouble-free operation the stove/firebox must have the
necessary air available for combustion and this is provided through
the permanent air vent.
The permanent air vent must:
- have a total free cross section at least equal to the size given in the
paragraph “TECHNICAL DATA”;
- be protected by a grille or suitable guard provided it does not
r
educe the minimum recommended section;
- be in a position whereby it cannot be obstructed.
The airflow necessary for the fire may be obtained in different ways:
- through a permanent air vent direct into the room of installation;
- with ducting through pipes direct to the room of installation,
increasing the recommended minimum free cross section by at
least 15%;
- from an adjacent room to the place of installation provided this air
flows freely through permanent apertures communicating with the
outside.
If the appliance is being fitted within an existing firebox
recess, specialist advice should be sought before fitting any
permanent ventilation within this area.
The adjacent room from which air is taken must not have a
low pressure compared to the exterior due to a counter
draught caused by the presence in that room of another
appliance in use or of a suction device.
The permanent apertures in the adjacent room must comply
with the requirements given above.
Combustion air must not be taken from adjacent rooms used
as a garage or a combustible materials store or for activities
posing a fire hazard.
The air supply must comply with the current copy of the
Building Regulations Approved Document J.
1.4 PERMANENT VENTILATION
DT2012090-00
Fig. 12
D
T2030260-01
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