Preparations for wall installation

12	Suction duct for second room connection on ER GH: AFR 75 / AFR 80 flexible aluminium duct
14	Main duct: Steel folded spiral-seams duct
15	Connection duct on ER GH: AFR 75 / AFR 80 flexible aluminium duct permitted inside the shaft
16	Power cable

Installation information

Observe approval: Certificates of approval and Requirements in line with approval.
Always use correct duct material for the housing.
For fire protection systems, the gap remaining between the connection duct and brickwork/wall boards/wall/ceiling must be fully sealed with non-flammable materials that are resistant to deformation (e.g. concrete, cement mortar, fire protection filler).

Damage to unit, malfunctioning in the event of corrosion damage from mortar.

Wrap ventilation ducts, connected to the unit, with a suitable adhesive tape to protect against corrosion inside the brickwork, e.g. using cold-shrink tape.

Produce opening in shaft or alternatively produce a wall facing. Ensure a suitable, flat surface for the housing so that the fan insert can be safely inserted in the housing later on.
For a second room connection, produce an opening in the wall or shaft for the suction duct. Note permissible housing installation positions.
Correctly attach main duct inside the shaft.
For fire protection systems, use ceiling compound. To do this, encase the ceiling and pour in the material from above.
Connect connection duct, suitable for the housing, to the main duct and seal for ventilation.
Cut connection duct to length, note a maximum duct length of 6 m.
NOTE! Cut connection duct to a length which allows it to be fitted on the exhaust socket and also sealed for ventilation at the unit end.
Lay suction duct and seal gap remaining correctly as described in previous mounting instructions.
Lay power cable in shaft and allow to protrude by around 30 cm above the shaft opening.
Lay power cable: Electrically connecting the unit.