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en - Installation notes
Installation of electrically heated and gas-heated variants
Air intake/exhaust
air
Silencer (Miele
accessory avail-
able to order)
Calculating the
total length and
diameter of a sup-
ply-air or exhaust
pipe
30
The tumble dryer may only be operated when the ducting has been
connected properly and the room is sufficiently ventilated.
The use of silencers is not permitted in exhaust ducting used by gas-
heated washing machines or ironers. The tightness of the silencer is
classified as category B in accordance with EN 13180.
With gas-heated tumble dryers, Building regulations approval must
be obtained for the overall ducting system. You are not permitted to
install multiple tumble dryers to a single silencer. If the tumble dryer is
connected to a shared extraction system, the silencer must be in-
stalled directly onto the tumble dryer's exhaust connection point. The
non-return flap must then be installed downstream of the silencer in
the direction of flow.
The length of the required pipeline and the number and shape of the
elbows are determined by the structural conditions. In order to avoid
impairing the airflow performance, the pipeline should be as short as
possible and if feasible should not have any sharp bends.
In addition, a decision must be made as to whether flexible piping or
steel piping should be installed with a round or square cross-section.
If the tumble dryer is connected to a central air supply, the total pipe
length is calculated from the sum of all exhaust and supply pipes. The
maximum supply pipe length should not exceed half of the total pipe
length.
The exhaust ducting for gas-heated appliances must not be
made from flammable materials.
Otherwise there is a risk of fire.
Use only non-flammable materials for the exhaust ducting.
In upward exhaust ducting systems, a condensate drain must be fit-
ted at the lowest point. The condensate must be drained via a water
collection tray or a floor drain positioned in an appropriate location.
If air is being directed from multiple appliances into a combined duct-
ing system (exceptional circumstances), a non-return device (non-re-
turn flap) must be installed in the ducting for each appliance to pre-
vent backflow.
To make subsequent cleaning of the pipes easier, cleaning flaps
should be fitted to elbows wherever possible.
The on-site exhaust ducting and outlet to the outdoors must be regu-
larly checked for lint deposits and cleaned if necessary.
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