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Route a 4-core bus cable from the ventilation unit to the mount-
ing position of the programming unit. Use a screened electronic
cable such as LiYCY 2x2x0.8 mm². Do not route the cable parallel
to a three-phase cable.
The BUS cable must protrude 20 to 30 cm out of the wall to al-
low installation.
Removing the programming unit from the appliance
u Disconnect the power supply by pulling the power plug
from its socket.
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u To release the filter cover, press the cover fastening on both
sides of the appliance.
u Pull the filter cover forwards to remove it from the appli-
ance.
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u From above, undo the screws securing the top front panel
to the ventilation unit.
A cable is connected at the back of the programming unit.
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u To avoid damaging the cable and programming unit, lift the
top front panel carefully off the ventilation unit.
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Installation (qualified contractors)
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u Disconnect the cable from the back of the programming
unit.
u Disconnect the cable from the slot on the controller as-
sembly.
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u At the back of the programming unit, press the side locking
tabs inwards and remove the frame from the programming
unit.
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1 Dummy cover
u Insert the dummy cover supplied into the top front panel
from the front.
u Fit the frame on the back of the dummy cover.
u Press carefully until the dummy cover clicks into place in
the frame.
u Fit the top front panel to the ventilation unit.
Installation with a flush box
For securing to a wall we recommend using a flush box, which
can hold the part of the bus cable protruding from the wall.
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