Maico ER shell, Installation Instructions Manual

6 Mounting preparations

13

6.2 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 [

}

 8]

and 

Requirements in line with approval [

}

 12]

.

• Always use correct duct material for the hous-

ing.

• 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).

NOTICE 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.

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. For a second room connection, produce an

opening in the wall or shaft for the suction
duct. Note permissible housing installation po-
sitions.

3. Correctly attach main duct inside the shaft.

4. For fire protection systems, use ceiling com-

pound. To do this, encase the ceiling and pour
in the material from above.

5. Connect connection duct, suitable for the

housing, to the main duct and seal for ventila-
tion.

6. Cut connection duct to length, note a max-

imum duct length of 6 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.

7. Lay suction duct and seal gap remaining cor-

rectly as described in previous mounting in-
structions.