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9 Mounting preparations
DANGER Danger to life due to fire trans-
mission if not flush with the brickwork or with
panel building materials.
If used outside the shaft, seal the gap remaining
between the connection duct and brickwork/wall
boards with non-flammable materials resistant to
deformation.
For example, use concrete or cement mortar for
brickwork or special fire protection filler for wall
boards.
Procedure
It is essential to observe the installation in-
structions: Mounting preparations [} 10].
1. Correctly attach main duct inside the shaft.
2. Apply ceiling compound. To do this, encase
the ceiling and pour in the material from
above.
3. Make shaft opening for the DN 80 steel folded
spiral-seams duct.
4. Fit duct attachments to the ceiling. Only use
permitted, suitable mounting material.
5. Connect DN 80 steel folded spiral-seams duct
to main duct and seal for ventilation, for ex-
ample with cold-shrink tape.
6. Apply brickwork compound. Seal gap between
brickwork and folded spiral-seams duct. The
gap remaining must be fully sealed with non-
flammable materials that are resistant to de-
formation. For example, use concrete or ce-
ment mortar or for wall boards, use fire protec-
tion filler.
7. Fasten duct bends with 3 steel screws or 3
steel blind rivets.
8. Make the DN 80 opening for the unit connec-
tion socket in the suspended ceiling (fire res-
istance is not required). It is essential to ob-
serve the permissible installation positions:
Permissible installation positions for AP and
APB fans.
9. Attach the suspended ceiling and provide a
suitable, level substructure.
It is imperative to compensate any uneven-
ness in the wall or ceiling so that the lower
part of the housing can be installed without
warping. Otherwise it may be that the fan
insert can no longer be inserted into the
lower part of the housing or that the de-
gree of protection indicated on the rating
plate is no longer guaranteed.
14
10.Attach spigot made from shaft material F90
around the shaft.
The spigot compensates for the length of
the shaft walls in the event of a fire.
11.Continue with the safety-related test of the
shut-off device: ER-APB: Safety instructions for
installation of the fire protection shut-off
device [} 7].
9.4 Preparations for wall, shaft or
ceiling installation without fire pro-
tection
1. Carry out installation preparations as de-
scribed: Requirements in line with approval
[} 11]. However, comply with the specifications
suitable for the exhaust air system in accord-
ance with the applicable fire protection regula-
tions.
2. Permissible connection ducts for connection
without fire protection requirements:
• Shaft/wall installation: Flexible aluminium duct
with DN 80 connection diameter, max. 2 m
long, two 90° elbows.
• Ceiling installation (connection outside of the
shaft): Steel folded spiral-seams duct and/or
flexible aluminium duct with DN 80 connection
diameter, max. 2 m long, two 90° elbows.
3. Use suitable mounting material for installation
without fire protection.
9.5 Preparations for the electrical
connection
DANGER Danger to life from electric
shock.
Before laying the power cable, switch off all sup-
ply circuits. Switch off mains fuse, secure against
being accidentally switched back on and position
a visible warning sign.
Always note the relevant specifications for
electrical installations and when fitting
equipment. In Germany, observe DIN VDE
0100 and the corresponding parts in partic-
ular.
1. Lay power cable to the installation location.
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