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 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 inlets which cannot be blocked, in windows, doors and outside wall vents, or by other technical measures, such as ensuring that the extractor 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 must be sought.
If the rangehood is being operated in recirculation mode, the above restrictions do not apply.
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