3: INSTALLATION AND WIRING3-12 « FC4A MICRO SMART USER ’S MANUAL »Mounting DirectionMount the MicroSmart modules horizontally on a vertical plane as shown on the preceding page. Keep a sufficient spacingaround the MicroSmart modules to ensure proper ventilation and keep the ambient temperature between 0°C and 55°C.All-in-One Type CPU ModuleWhen the ambient temperature is 35°C or below, the all-in-one type CPU modules can also be mounted upright on a hori-zontal plane as shown at left below. When the ambient temperature is 40°C or below, the all-in-one type CPU modules canalso be mounted sideways on a vertical plane as shown in the middle below.Slim Type CPU ModuleAlways mount the slim type CPU modules horizontally on a vertical plane as shown on the preceding page. Any othermounting directions are not allowed.Allowable Mounting Directionat 35°C or belowIncorrect Mounting DirectionAllowable Mounting Directionat 40°C or belowIncorrect Mounting DirectionIncorrect Mounting DirectionIncorrect Mounting Direction