Bosch WTA74200AU Manuel d'instructions d'installation - Page 2

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Notes on installation
Individual pressure loss values
Pipe connection
Flat duct connection
diameter > 100 mm
Internal wall
Pipe,
Flexible
Flexible
110 x 54
smooth
pipe,
pipe, cor-
smooth
grooved
rugated
Model variant
straight piece per 1 m length
4
6
12
Fixtures
Bend
R = 300 mm
3
5
7
R = 200 mm
4
7
8
R = 100 mm
6
9
10
Angle
10
16
17
Elbow
19
22
24
> 50
Telescopic wall box with grid
14
Wall box with backpressure flap
6
Total pressure loss values
Total pressure loss
Pipe connection
0 - 50
100
0 - 80
110
0 - 124
120
0 - 186
130
Installing more than one dryer
Up to 7 exhaust air dryers can be connected to an intercepting pipe with a smooth internal
wall.
The following points MUST be observed:
– It is imperative that there are drain check valves in the interception pipe for every dryer.
These valves prevent the moist exhaust air from flowing back into the washing and
220 x 54
drying room through dryers which are not in operation.
smooth
– The outlet for the exhaust air must be arranged/routed in such a way as to prevent any
additional backpressure (e.g. from a direct ingress of wind) on the escaping exhaust
air.
– In every case, have safe operation confirmed by the responsible ventilation engineer/
10
3
installer.
When connecting to the interception pipe, avoid the following:
– mutual interference between dryers
6
3
– discharge of moisture in the washing and drying room
8
4
– higher pressure losses (increase in energy consumption and time)
– The exhaust air ducts of the individual dryers (DT = R >= 100 mm) should already
be extended to the dimension of the interception pipe upstream of the drain check valves.
12
6
– Possible backpressure (e.g. caused by wind ingress) can be minimised by using
a 90° bend, facing down.
26
8
17
28
7
13
3
6
Exhaust air duct for tumble dryer
Installation instructions
Do not operate the exhaust air duct until you have read these instructions.
Please also observe the separate instruction manual for the exhaust air dryer.
Keep all the documents in a safe place for future reference, or to pass on to
the next owner.
7
en