• Bosch corporate
 

Vented Tumble Dryers

Installation Tips
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
  • Backpressure flap
The material must be heat resistant up to 80oC and moisture resistant
Pressure losses
The type and length of the 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
  • 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 pictures
The exhaust air encounters further resistance through fixtures built into the pipe, e.g. diverters(bends, elbows, angles), wall boxes with grids or back pressure flaps.
Installation for pipe connection - inside diameter = 100mm
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 individual pressure loss values for the straight pieces and fixtures in the exhaust air duct

The value for the maximum premissible total pressure loss for an exhaust air duct is 50*.
Installation for pipe connection - inside diameter = 100mm
If the pipe connection has an inside diameter >100mm and a total pressure loss greater than 50*, increase the inside diameter of the pipe connection
Connections on the dryer
Connections for an exhaust air duct are located on the back panel and on the left side panel of the dryer.
Condensation outlet
If there is a high level of condensation in the exhaust air duct, it is advisable to fix a condensation collector (standard) or a drain hole with a diameter of approximately 3mm to the lowest part of the exhaust air duct.
Left side panel connection
  1. Remove the cover on the side panel
  2. Remove the bayonet ring from the back panel and attach it to the opening on the side panel.
  3. Close off the rear panel vent with the cover
Back panel connection
  • The exhaust air opening on the back panel is open when the dryer is delivered (bayinet ring).
  • The exhaust air opening on the left side panel is sealed with a cover.
Installation options for the exhaust air duct
NOTE1
  • Route the exhaust air duct in suck a way that the dryer cannot draw the moist, warm exhaust air back in again.
  • The outlet for the exhaust air must be designed or positioned in suck a way as to prevent any additional back pressure (e.g. from a direct ingress of wind) on the escaping exhaust air, e.g. by using a 90o bend, facing done
  • The outlet for the exhaust air duct must be no more than 2.5m higher than the exhaust air opening on the appliance.
NOTE2
Example:
Pipe conneciton - inside diameter = 100mm, smooth
A = straight piece (1.0m)4
B = curved pipe (r = 200mm)4
C = straight piece (1.5m)6
D = pipe elbow19
E = telescopic wall box with grid14
Total pressure loss47
Directly into the air
Route the exhaust air drectly into the open air via an exhaust air pipe through an open window.

Example:
Pipe connection - inside diameter = 100 mm, fleible pipe, corrugated
A = curved pipe (R = 300mm)7
B = straight piece (1.5m)18
C = curved pipe (R = 100mm)10
D = straight piece (0.5m)16
Total pressure loss41
NOTE1
  • Route the exhaust air duct in suck a way that the dryer cannot draw the moist, warm exhaust air back in again.
  • The outlet for the exhaust air must be designed or positioned in suck a way as to prevent any additional back pressure (e.g. from a direct ingress of wind) on the escaping exhaust air, e.g. by using a 90o bend, facing done
  • The outlet for the exhaust air duct must be no more than 2.5m higher than the exhaust air opening on the appliance.
Through a wall box into chimneys or ventlation shaft
  • It is not permitted to connect the exhaust air duct to chimneys which are connected to gas or coal- ifred ovens/ cookers or gas-fired heating systems
  • If the appliance is being connected to a moisture-insulated ventilation shaft the responsible chimney swwp must be informed and the approval of the local building department (building supervision office) or the owner of the building must be obtained.
 
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