Daikin RX09NMVJU Installation Manual

Also see for RK09NMVJU: Engineering data Service manual Installation manual Service manual Installation manual

Contents

Daikin RX09NMVJU Installation Manual Manual pdf 12 page image

11 ■EnglishFacility Setting*(cooling at low outdoor temperature)This function is limited only for facilities (the target of air conditioning is equipment (such as computer)).Never use it in a residence or office (the space where there is a human).*Only for RX and RK models. Cutting jumper 6 (J6) on the circuit board will expand the operation range down to 5°F (–15°C). However it will stop if theoutdoor temperature drops below –4°F (–20°C) and start back up once the temperature rises again.1) Remove the top plate of the outdoor unit. (09/12 class: 3 screws, 18/24 class: 6 screws)2) Remove the front plate. (09/12 class: 4 screws, 18/24 class: 8 screws)3) Cut the jumper (J6) of the PCB inside.CAUTION• If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind, provide a windbreak wall.• Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings.• Do not place humidifi ers or other items which might raise the humidity in rooms where facility settings are being used.A humidifi er might cause dew jumping from the indoor unit outlet vent.• Cutting jumper 6 (J6) sets the indoor fan tap to the highest position. Notify the user about this.Pump Down OperationIn order to protect the environment, be sure to pump down when relocating or disposing of the unit.1) Remove the valve cap from the liquid stop valve and gas stop valve.2) Carry out forced cooling operation.3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench.4) After 2 to 3 minutes, close the gas stop valve and stop forced coolingoperation.Forced cooling operationUsing the indoor unit ON/OFF switchPress the indoor unit ON/OFF switch for at least 5 seconds. (The operation willstart.)• Forced cooling operation will stop automatically after about 15 minutes.To stop the operation, press the indoor unit ON/OFF switch.Gasstop valve Valve capHexagonalwrenchCloseLiquidstop valveService portUsing the indoor unit’s remote controller1) Press , and at the same time.2) Press , then select , press .3) Press to turn on the system.• Forced cooling operation will stop automatically after about 30 minutes.To stop the operation, press .HEAT PUMP model COOLING ONLY modelCAUTION• When pressing the switch, do not touch the terminal block. It has a high voltage, and touching it could cause electric shock.• After closing the liquid stop valve, close the gas stop valve within 3 minutes, then stop the forced operation.