Always ensure the gradient of drain lineaccording to the number of units to beinstalled as shown on page 4.Laying the subflooring material9■ Composite Panel Platform MethodMarking (floor level)Mark the floor level (F.L.)140 mm or morePipingIllustrates the markings (installation position), the support legs and the base panel andmark the position to place the floor unit.Cut the panel + 50 mm larger around the attachment position.WallD-dimensionA-dimensionMarking linesHot water supplyDrainMirrorBaseSupport LegWater supplyRefer to the Chair Arrangement Correlation Dimension(on pages 30 to 34) that illustrates the markings (installa-tion position), the support legs and the base panel andmark the position to place the floor unit.(The A-dimension and the D-dimension depend on the chairto use and the reclined posture.)As for markings, rule lines as many as possible so that youcan see the layout of the water supply Pipe, the hot watersupply Pipe and the drainpipe and the floor unit position.Arrange the support legs and the floor base panel at thistiming.Lay pipes to meet the floor unit position marked in Step 2 accord-ing to the Plumbing Drawing on page 2.For plumbing, check the position of the support legs to hold thefloor in advance and avoid the position to lay the pipes.When the floor mount high rocks pump (SP-CH) is fastenedonto the floor, pay attention to the following dimensions:1350 mm or more285 mm or less368 mm or lessMake sure that the drainpipe does not have double trapping.Drain failure or abnormal noises may occur.Before laying the subflooring material, cut off theopening in the floor base panel for the unit attach-ment position.Check the flexural level of the floor base panel withthe opening and place additional support legs.CAUTIONF.L123CAUTIONFloor unit installation position505050 50