110 Installation on an existing substructureM-30-1382-en S8 / S81 Ceiling Mounts Issue 12.0Printed on 19. 11. 2007Installation on an existing ZDK intermediate pieceThe ZDK intermediate piece (305942-9103.000) was used to install theS5, S51, S6 and S61 ceiling mounts.Mounting electrical components on the mounting bracketNote:The mounting bracket can only be used to mount the electrical compo-nents on intermediate piece (1) if intermediate piece (1) has a clearanceof at least 310 mm (12.2").Otherwise, the electrical components can also be mounted on adapterplate (3)..1 ZDK intermediate piece (305942-9103.000)of S5, S51, S6 and S61 ceiling mounts2 False ceiling3 Adapter plate4 Electrical componentsmounted on mounting bracket.Caution:When ordering an S81 ceiling mount for installation on an existing inter-mediate piece, you must determine and specify dimension B in the "Ordersheet for S81 ceiling mounts in ORs with false ceilingst (see page 55) asfollows:g Measure the distance between the bottom surface of the intermediatepiece to the floor.g Subtract the probable distance between the adapter plate and the in-termediate piece and enter the value obtained as dimension B in theorder sheet.The probable distance of the adapter plate from the intermediate piecewill be at least 50 mm (1.97"), if the electrical components are attached tothe side of the mounting bracket.