Connection to ducts

  1. Remove the 3 screws from the upper part of the housing and remove the upper part.
  3. Remove EHD roof socket (4 screws).
  4. Plug the EHD onto the ventilation duct OR place the folded spiral-seams duct up against the fan on the suction side.

Observe spacing for EL/ELA flexible cuffs or flexible couplings.

  1. Screw the EHD tightly to the ventilation duct with tapping screws OR fix the folded spiral-seams ducts to the fan with EL/ELA flexible cuffs or couplings.
  2. In the case of a free inlet, fit an SGR protective grille as protection against accidental contact and drawing in.
  3. Fit suitable insulation and sound-deadening material.