8Installation ProcedureEnglishInstallation ProcedureStep 2 Fixing the outdoor unit in placeInstall the outdoor unit on a rigid and stable base toprevent disturbance from any noise caused by vibration.When installing the unit at a height or in a locationexposed to strong winds, fix the unit securely to asupport (i.e., a wall or a ground).Fix the outdoor unit with anchor bolts. Make sure thatthe anchor bolts are 20 mm or higher from the basesurface.(Unit : mm)Anchor bolt holeCAUTION• Install a drain outlet at the lowest end around thebase for outdoor unit drainage• When installing the outdoor unit on the roof,waterproof the unit and check the ceiling strength.• Make sure that the wall can support the weights ofthe rack and the outdoor unit.• Install the rack close to the column as much aspossible.Optional: Fixing the outdoor unit to a wall witha rackSoft rubber designed to cut off vibration fromrack to wall. (not supplied with product)Designed to cut off residual vibration fromoutdoor unit to rack. (not supplied with product)Anchor boltBase surface20 mm• Install a proper grommet in order to reduce noise andresidual vibration transferred by the outdoor unittowards the wall.CAUTION• When installing an air guide duct, be sure to checkthe following:– The screws do not damage the copper pipe.– The air guide duct is fixed firmly on the guard fan.