Miele DA 217-2 Operating And Installation Instructions - Page 7
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When using the cooker hood in
extraction mode at the same time
as another heating appliance which de-
pends on the air in the room, (e.g. gas,
oil or coal fired heaters, continuous flow
or other water heaters, gas cooker, gas
hob or gas oven) special care must be
taken, as the action of the cooker hood
extracts air from the room, which these
types of heater need for combustion.
They could also draw exhaust air back
in from chimneys or ducting in con-
travention of fire safety regulations.
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 extractor 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 in-
lets which cannot be blocked, in win-
dows, doors and outside wall vents, or
by other technical measures, such as
ensuring that the extractor can only be
switched on when the heating ap-
pliance is switched off or vice-versa.
N.B: The overall ventilation condition of
the dwelling must be taken into ac-
count. If in any doubt, the advice of a
competent builder or, for gas, a "Corgi"
installer must be sought.
If the cooker hood is operated in recir-
culation mode (with active charcoal
filter) then the above restrictions do not
apply.
For appliances with an external fan
motor fitted (EXT models) the con-
nection of the two units must be made
using the connection cable and the
plug connectors. Make sure the correct
combination of the two appliances has
been selected.
Separate instructions are supplied with
the external fan.
Before discarding an old ap-
pliance, switch off and disconnect
it from the power supply. Cut off and
render any plug useless. Cut off the
cable directly behind the appliance to
prevent misuse.
This should be done by a competent
person.
The manufacturer cannot be held
liable for damage caused by non-
compliance with these Warning and
Safety instructions.
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