OBO Bettermann
24 | EN
Direct mounting on the ceiling, wall or floor
400
400
400
400
400
200
200
200
100
100
100
BSKM 0407
100
100
Fig 20:
Hole pattern for ceiling mounting, BSKM 0407
• Apply the drill holes to the ceiling.
• Drill the ceiling holes. For the fire protection bolt ties MMS-plus 7.5x50,
ensure a drilling depth of at least 65 mm, Ø 6 mm (see Fig. 11 on page
17).
• Clean the drill holes carefully, e.g. through suction or blowing-out.
• Fasten the duct to the two outermost holes and, at first, hand-tighten
the screws.
• Fix the duct to the inner holes together with cable clamps for ceiling
mounting (BSKM-BD 0711 or BSKM-BD 1025) (see Fig. 16 on page
23).
• Slacken the external fastenings, push in the cable clamps and screw
them tight, together with the duct.
• Insert the cables in the cable clamps.
• Push the duct lid on firmly.
• Attach the connector (see “5.4 Connecting joints” on page 28) or
fitting (see “5.6 Mounting fittings” on page 31) and mark the drill
holes.
• Remove the connector or fitting and drill the holes.
• Attach the connector or fitting again and screw it on so that the joints
of the ducts are sealed evenly and securely.
• Create the equipotential bonding (see “8.1 Create equipotential bond-
ing” on page 72).
