100 Installation on an existing substructureM-30-1382-en S8 / S81 Ceiling Mounts Issue 12.0Printed on 19. 11. 2007Mounting optionsUsing the adapter plate, the S8 or S81 ceiling mount can be mountedon:e existing intermediate piece (305658-0000.000) of an S23 or EMD2ceiling mount, with the adapter plate in a laterally offset position andthe electrical components mounted on the mounting bracket.e existing intermediate piece (305658-0000.000) of an S23 or EMD2ceiling mount, with the adapter plate in a centered position and option-ally:e electrical components mounted on the mounting bracket ore electrical components mounted on the adapter plate.e existing ZDK intermediate piece (305658-0000.000) of an S5, S51, S6or S61 ceiling mount, and optionally:e electrical components mounted on the mounting bracket ore electrical components mounted on the adapter plate.e existing ceiling track mount (305620-0000.000) of the S23 ceilingmount, with electrical components mounted on the adapter plate.The different mounting options are described in more detail in the fol-lowing.Adapter plate (1071-924)1 Hole circleThe hole circle with dia. 440 mm (17.3") has been provided for the in-stallation on an existing ZDK intermediate piece (305942-9103.000) ofthe S5, S51, S6 or S61 ceiling mount.2 Rows of boresThe rows of bores have been provided for the installation on an ex-isting intermediate piece (305658-0000.000) of the S23 or EMD2ceiling mount and for the installation on an existing ceiling track mountof the S23 ceiling mount.The adapter plate can also be mounted with a 90 mm (3.5") lateraloffset on the intermediate piece of the S23 or EMD2 ceiling mount.t = 20 mm (0.8"), thickness of the adapter plate