Miele CSDA 7001 FL, Operating And Installation Instructions

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Warning and Safety instructions
10
Using at the same time as other heating appliances that depend on the air
from the room
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Warning - danger of toxic fumes!
Great care should be taken when using the downdraft extractor 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 cooktops, 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, with or without an external motor
fitted, or in recirculation mode with a recirculation box installed
outside the room, the downdraft extractor 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 will 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.