Pump Down Operation; Facility Setting (Cooling At Low Outdoor Temperature) - Daikin RXS20G2V1B Installation Manual

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 liquid stop valve and gas stop valve.
2) Carry out forced cooling operation.
3) After five to ten minutes, close the liquid stop valve with a hexagonal wrench.
4) After two to three minutes, close the gas stop valve and stop forced cooling operation.
How to force cooling operation mode
■ Using the indoor unit operation/stop button
Press the indoor unit operation/stop button for at least five seconds.
(Operation will start.)
• Forced cooling operation will stop automatically after around 15 minutes.
To force a test run to stop, press the indoor unit operation/stop button.
■ Using the main unit's remote control
1) Press the "operation/stop" button.
(Operation will start.)
2) Press the temperature
3) Press the "operation select" button twice.
( will be displayed and the unit will enter test run mode.)
4) Press the "operation select" button to return the operation mode to cooling.
• Test run mode will stop automatically after around 30 minutes. To force a test run to stop, press the operation/stop button.
■ Using the outdoor unit forced cooling operation switch (with standby electricity saving function turned OFF)
1) Push on " " with a screwdriver. The unit will start operating.
2) The forced cooling mode is selected, and terminates in approx. 15 minutes.
CAUTION
1) When pressing the switch, do not touch the terminal block. It has a high voltage, so doing so may cause electric shock.
2) After closing the liquid stop valve, close the gas stop valve within three minutes, then stop the forced operation.
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 office (the space where there is a human).
1) Cutting jumper 4 (J4) on the circuit board will expand the operation range down to –15°C. However it will stop if the outdoor
temperature drops below –20°C and start back up once the temperature rises again.
J4
J8
J9
Cut J4 with nippers
or a similar tools.
CAUTION
1) If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind, provide a windbreak wall.
2) Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings.
3) Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
4) Cutting jumper 4 (J4) sets the indoor fan tap to the highest position. Notify the user about this.
9
button and the "operation select" button at the same time.
S50
S1
S90
PCB
S10
S20
Hexagonal
wrench
Liquid
stop valve
Close
Gas
stop valve
Valve cap
Power supply
1
2
3
terminal block
Push
here
Screwdriver
The selective connector for standby electricity saving in
use (with standby electricity saving function turned OFF)
1 2 3
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