Facility Setting (Cooling At Low Outdoor Temperature); Pump Down Operation; Forced Cooling Operation - Daikin RX09NMVJU Manuel D'installation

Facility 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 offi ce (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 the
outdoor 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 Operation

In 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 cooling
operation.

Forced cooling operation

Using the indoor unit ON/OFF switch
Press the indoor unit ON/OFF switch for at least 5 seconds. (The operation will
start.)
• Forced cooling operation will stop automatically after about 15 minutes.
To stop the operation, press the indoor unit ON/OFF switch.
Using the indoor unit's remote controller
1) Press , and
2) Press , then select
3) Press to turn on the system.
• Forced cooling operation will stop automatically after about 30 minutes.
To stop the operation, press
CAUTION
• 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.
11
at the same time.
, press .
.
Liquid
stop valve
Gas
stop valve
Service port
HEAT PUMP model COOLING ONLY model
Hexagonal
wrench
Close
Valve cap
■
English