Miele PDR 910 G Plano De Instalación página 38

en - Installation notes
The following
should be avoided:
Use:
Design of the ex-
haust air manage-
ment system
Calculating the
total ducting
length
38
- Does cause damage or unacceptable disturbance.
The air required for drying is taken from the room where the dryer is
installed. You must therefore ensure that the room is sufficiently vent-
ilated. Otherwise, there is a risk of suffocation due to exhaust gases
being sucked back from other technical systems or fuel-burning in-
stallations, and the drying time will be much longer.
- Long vent ducting
- Too many tight bends or elbows
This will help to stop a reduced dryer performance and excessive
time and energy requirements.
- For the vent ducting: exhaust hose* or a plastic waste water pipe
(e.g. HT piping systems) with a minimum diameter of 100 mm.
- *optional accessories
This tumble dryer is classified as a type B22 gas fuel-burning in-
stallation without flow safeguarding equipment, and with a fan be-
hind the heater.
The mixtures of exhaust gas and air that are emitted by gas-heated
tumble dryers must be discharged into the atmosphere individually
via the roof.
In the case of combined lines, each gas-heated dryer must have a
non-return flap.
Exceptions regarding the design of the exhaust air management
system must be designed in accordance with the applicable local
building regulations. Seek approval from the relevant building in-
spector.
- The connections between exhaust air ducts and the exhaust gas
system must be kept as short as possible.
- When connecting the vent ducting to the exhaust duct on a ma-
chine, particular care must be taken to make sure the connection is
secure and air-tight.
- Only use heat-resistant materials with a temperature resistance of
at least 80 °C.
- Condensation will form in the exhaust air management system. A
condensate drain must therefore be placed at the lowest point in
the system.
The friction of the vent ducting with its bends and various compon-
ents provides resistance to the flow of air. This friction resistance is
expressed as a relative pipe length. The relative pipe length indic-
ates how much greater the resistance of a bend is, for example, when
compared to 1 metre of a straight plastic waste water pipe (table I).