Facility Setting (Cooling At Low Outdoor Temperature) - Daikin ARXM25M2V1B Installation Manual

Pump Down Operation
WARNING
The unit is accompanied with the label below. Please read the following instructions carefully.
1)
WARNING
2)
3) 4) 5)
CAUTION
• When pressing the switch, do not touch the terminal block. It has a high voltage, so doing so may cause electric shock.
• After closing the liquid stop valve, close the gas stop valve within 3 minutes, then stop the forced cooling operation.
Facility Setting (cooling at low outdoor
temperature)
This function is designed for facilities such as equipment or computer rooms. It is never to be used in a residence or office
where people occupy the space.
1) Cutting jumper 6 (J6) 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.
Cut J6 with nippers
or a similar tools.
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 humidifiers or other items which might raise the humidity in rooms where facility settings are being used.
A humidifier might cause dew condensation from the indoor unit outlet vent.
• Cutting jumper 6 (J6) sets the indoor fan tap to the highest position. Notify the user about this.
9
• When the refrigeration circuit has a leak, do not execute pump down with the compressor.
• Use recovery system into separate cylinder.
• Warning, explosive hazard exists when executing pump down.
• Pump down with compressor can lead to self-combustion due to air entering during pump
down.
Used symbols:
1) Warning sign (ISO 7010 – W001)
2)
Warning, Explosive material (ISO 7010 – W002)
3)
Read Operator's manual (ISO 7000 – 0790)
4)
Operator's manual; operating instructions (ISO 7000 – 1641)
5) Service indicator; read technical manual (ISO 7000 – 1659)
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