Daikin H-Series Engineering Data page 45

Installation Manual
Facility Setting Switch
This function is only for facilities where the air conditioning is targeted for equipment such as computers.
Never use it in a residence or office where people occupy the space.
1) You can expand the operation range to 5°F (–15°C) by turning on switch B (SW4) on the PCB. If the
outdoor temperature falls to – 4°F (–20°C) or lower, the operation will stop. If the outdoor temperature rises,
the operation will start again.
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) Use the indoor unit at the highest level of air flow rate.
44
(cooling at low outdoor temperature)
S102
S2
LED-A
Turn on
switch B.
SW4
SW1
EDUS04-924A
Room Air Conditioners H-Series