8 English5. INDOOR UNIT INSTALLATIONInstalling optional accessories (except for the decoration panel) before installing the indoor unit iseasier. However, for existing ceilings, install fresh air inlet component kit and branch duct beforeinstalling the unit.As for the parts to be used for installation work, be sure to use the provided accessories and specified partsdesignated by our company.(1) For new ceilings(1-1)Install the indoor unit temporarily.• Attach the hanger bracket to the suspension bolt. Be sure to fix it securely by using a nut andwasher (3) from the upper and lower sides of the hanger bracket.The washer fixing plate (7) will prevent the washer from falling.(1-2)Refer to the paper pattern for installation (5) for ceiling opening dimension.Consult the builder or carpenter for details.• The center of the ceiling opening is indicated on the paper pattern for installation.The center of the unit is indicated on the triangular mark to the unit bottom and on the paper pattern forinstallation.• Fix the paper pattern to the unit with screws (6) (×4).• Ceiling height is shown on the side of the paper pattern for installation (5). Adjust the height of the unitaccording to this indication.Please perform one of the following, as the shape of the paper pattern for installation differs accord-ing to the model.Field supplyWasher (3) (attached)Hanger bracketTighten(double nuts)Fig. 9[Securing the hanger bracket]InsertWasher fixing plate (7)[Securing the washer](attached)Fig. 10Paper pattern forinstallation (5)False ceiling[Installation of paper pattern for installation]Center ofceiling openingLOWER SURFACEOF THE CEILING(Height adjustment of the unit.)Only the corner where the pipes go out, thescrew is already fixed at the drain pan.Screw (6)(attached)Screw (6)(attached)Fig. 11