Airflow Duplexvent MULTI-N Instruction Manual page 12

9. Stick D profile sealing (7) on the upper side of the frame. It is the side over which you have placed
the roof covering (sarking felt) (6).
10. Get the duct extensions with ports ready. Make sure that rubber sealing is attached to the ducts on
the whole surface of the upper side of the extensions. The width and depth of ports is determined
by the configuration of the unit. The height of the extensions is 1000 mm by default; however, it
can differ according to the project. The port can be extended by a galvanized metal sheet or
flexible hose to allow access to further duct installation under the roof - minimum overhang of 100
mm).
11. Slide the tube extensions with ports (optional accessory) via holes in base frame into the prepared
roof outlets.
Position the extensions in a way that rectangles on the flange of the extension point towards the
centre of the unit, see pictures below.
12. Fit flexible plastic sleeves for electric cables (NN, SLP) into the outlet in part i1 "Exhaust air
suction".
13. Fit flexible PE ducting for draining the condensate at points marked by letter K on the unit.
14. Fill the gap between the installation opening and duct pieces with PU foam; alternatively fit a
ceiling-void flange from the bottom – not supplied).
15. Run electric cables through the plastic sleeves and leave free ends approx. 1.5 metres long.
Base frame with duct extensions
12