Miele DDF 150 Instructions d'utilisation et d'installation - Page 6
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Warning and Safety instructions
Using at the same time as other
heating appliances that depend on
the air from the room
Warning - danger of toxic fumes
~
Great care should be taken when
using the cooker hood at the same time
and in the same room or area of the
house as another heating appliance
which depends on the air in the room.
Such appliances include gas, oil, wood
or coal-fired boilers and heaters,
continuous flow or other water heaters,
gas hobs, cookers or ovens which draw
air in from the room and duct exhaust
gases out through a chimney or
extraction ducting.
When used in extraction mode, the
appliance draws air in from the room in
which it is installed and from
neighbouring rooms.
If there is insufficient air, an
underpressure will occur. The heating
appliance may be starved of oxygen,
impairing combustion.
Harmful gases could be drawn out of
the chimney or extraction ducting back
into the room, with potentially fatal
consequences.
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In order to ensure safe operation, and
to prevent gases given off by the
heating appliances from being drawn
back into the room when the cooker
hood and the heater are in operation
simultaneously, an underpressure in the
room of 0.04 mbar (4 pa) is the
maximum permissible.
Ventilation can be maintained by air
inlets which cannot be blocked, in
windows, doors and outside wall vents,
or by other technical measures, such
as ensuring that the cooker hood can
only be switched on when the heating
appliance is switched off or vice versa.
A ventilation brick alone is not generally
sufficient to ensure safe ventilation.
,
The overall ventilation condition
of the dwelling must be taken into
account. If in any doubt, the advice
of a competent builder or, for gas, a
qualified gas fitter (GasSafe
registered in the UK) or electrician
must be sought.