Venturi-Air Duct Kit
30 FB 798349 / 04.13
10.5 Adapt the Venturi tube length
The Venturi tube of the air duct kit has to be adapted to the diameter of the air duct system. Venturi tubes are
available in three different lengths which can then be cut - if needed - to the required length. Minimum diameter
of the air ducts: 100 mm.
Diameter of the air duct Length of the Venturi tube Part No.
140 mm to 600 mm 600 mm 781446
600 mm to 1400 mm 1500 mm 781447
1400 mm to 2700 mm 2800 mm 781448
1)
For systems with a tube length of more than 600 mm the Venturi tube must be about 30 mm longer as the diameter of the air duct.
Fig. 14: Cutting the Venturi tube to the required length.
10.6 Mounting the Venturi tube
• Fit the supplied rubber gasket on the upper side of the Venturi
tube (enclosure ⇔ Venturi tube).
• Insert Venturi tube in the correct positional-Rohr arrangement
into the oval opening of the air duct kit.
• Fasten Venturi tube in the bottom of the enclosure with the
supplied short screw (subpackage).
• The end of the Venturi tube must be terminated with the supplied
end cap (Venturi tubes between 600 mm and 2800 mm only).
Fig. 15: Mounting the Venturi tube
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