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Direct mounting on the ceiling, wall or floor
BSKM 0407
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24 | EN
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Fig 20: Hole pattern for ceiling mounting, BSKM 0407
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Apply the drill holes to the ceiling.
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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).
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Clean the drill holes carefully, e.g. through suction or blowing-out.
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Fasten the duct to the two outermost holes and, at first, hand-tighten
the screws.
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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).
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Slacken the external fastenings, push in the cable clamps and screw
them tight, together with the duct.
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Insert the cables in the cable clamps.
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Push the duct lid on firmly.
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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.
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Remove the connector or fitting and drill the holes.
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Attach the connector or fitting again and screw it on so that the joints
of the ducts are sealed evenly and securely.
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Create the equipotential bonding (see "8.1 Create equipotential bond-
ing" on page 72).
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OBO Bettermann
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