Miele DA 2390 EXT Operating And Installation Instructions - Page 8

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Warning and Safety instructions

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 rangehood 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 or outside wall vents, or by other

technical measures, such as ensuring that the rangehood 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 (registered with an official gas safety body

in accordance with national safety regulations), must be sought.

If the rangehood is used in recirculation mode, where the air is

directed back into the room in which it is located, operating a

heating appliance which depends on the room air at the same time

is not hazardous.