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The ducting must never be installed in any of the following flues or
shafts.
- Chimneys or smokestacks that are in use.
- Shafts that are used to ventilate installation rooms with fireplaces.
- Flues that are used by third parties.
Smoke or exhaust gas that is fed back into the flue or shaft may be
toxic.
Reverse suction of exhaust gases may result in a risk of suffoca-
tion and poisoning if gas-powered flow heaters, gas-powered room
heaters, coal ovens connected to the flue, etc., are installed in the
same room, in the same dwelling or in neighbouring rooms and the
pressure is 4 Pa or less.
The following measures for suitable room ventilation (examples) can
help to prevent negative pressure in the installation area:
- Installing vents that cannot be closed in the exterior walls.
- Window switch: The tumble dryer can only be switched on when
a window is open.
Please always seek approval from the appropriate authority (GasSafe
engineer, chimney sweep etc.) to confirm that the appliance can be
operated without risk and that negative pressure of over 4 Pa can be
prevented.
Warning and Safety instructions
13
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