8 Mounting preparations
15
1
1
Dowel for drill holes
1
2
Main duct (steel fol-
ded spiral-seams
duct)
1
3
Connection duct:
steel folded spiral-
seams duct.
(For ceiling barrier
system or ventila-
tion ducts without
fire protection: flex-
ible aluminium
duct)
1
4
Power cable
Preparing the shaft
1. Produce opening in shaft or alternatively pro-
duce a wall facing. Ensure a suitable, flat sur-
face for the housing so that the fan insert can
be safely inserted in the housing later on.
2. Correctly attach main duct inside the shaft.
3. For fire protection systems, use ceiling com-
pound. To do this, encase the ceiling and pour
in the material from above.
4. Connect connection duct, suitable for the
housing, to the main duct and seal for ventila-
tion.
5. Cut connection duct to length, note a max-
imum duct length of 2 m.
Cut connection duct to a length which al-
lows it to be fitted on the exhaust socket
and also sealed for ventilation at the unit
end.
6. Lay suction duct and seal gap remaining cor-
rectly as described in previous mounting in-
structions.
7. Lay power cable in shaft and allow to protrude
by around 30 cm above the shaft opening.
Содержание ER GH AP
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