Bosch WTA74202ID Kurulum ve Kullanım Talimatları Kılavuzu - Sayfa 16
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Installation and connection
en
Seal the opening in the back panel
3.
with the cover.
If there is a high level of
Note:
condensation in the exhaust air duct, it
is advisable to fix a condensation
collector (standard) or a drain hole with
a diameter of approximately 3 mm to
the lowest part of the exhaust air duct.
Exhaust air duct
All standard products can be used for
the exhaust air duct:
flexible pipes
■
galvanised metal ducts or pipes
■
connectors, adapters and diverters
■
for flat duct systems and pipe
systems
wall boxes for evaporation into the
■
open air or into a ventilation shaft
adapters on rectangular ducts
■
rectangular ducts or plastic pipes
■
back pressure flap
■
The material must be heat
Note:
resistant up to 80 °C and moisture
resistant.
Pressure losses
The type and length of the
Note:
exhaust air duct, particularly elbows or
bends with small radii, can impede the
air flow. Keep diameter reductions and
pressure losses (resistance) to a
minimum.
The following must be avoided:
long exhaust air ducts
■
exhaust air ducts with small
■
diameters
16
exhaust air ducts with many bends
■
and elbows.
Pressure losses through friction
Duct or pipe friction resistance, i.e.
friction on the inside of the exhaust air
duct, affects the air flow as follows:
the smoother the internal wall
■
the larger the diameter of the internal
■
wall
the shorter the pipe
■
the lower the friction resistance.
Pressure losses due to fixtures
The exhaust air encounters further
resistance through fixtures built into the
pipe, e.g. diverters (bends, elbows,
angles), wall boxes with grids or
backpressure flaps.
Installation for pipe connection
inside diameter = 100 mm
■
In order to ensure the minimum
required air flow, a certain pressure
loss (resistance) must not be
exceeded.
The permissible total pressure loss
in an exhaust air duct must not
exceed a certain value. This is
calculated as the sum of all
individual pressure loss values for
the straight pieces and fixtures in the
exhaust air duct.
The value for the maximum
Note:
permissible total pressure loss for an
exhaust air duct is 50
inside diameter > 100 mm
■
If the pipe connection has an inside
diameter > 100 mm and total
pressure loss greater than 50*,
increase the inside diameter of the
pipe connection.
*
To determine the total pressure loss
see table ~ "Individual pressure
loss values" on page 17
*
.