English
10
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.
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 –18°C and start back up once the temperature rises again.
1) Remove the 3 screws on the side and remove the top plate of the outdoor unit.
2) Remove the drip proof cover.
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 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.
Wiring
WARNING
• Do not use tapped wires, stranded wires, extension cords, or starburst connections, as they may cause overheating, electrical
shock, or fire.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
• Be sure to install an earth leak detector. (One that can handle higher harmonics.)
(This unit uses an inverter, which means that it must be used an earth leak detector capable handling harmonics in order to
prevent malfunctioning of the earth leak detector itself.)
• Use an all-pole disconnection type breaker with at least 3mm between the contact point gaps.
• Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
• Equipment complying with EN/IEC 61000-3-12
(1)
• Do not turn ON the safety breaker until all work is
completed.
1) Strip the insulation from the wire (20mm).
2) Connect the inter-unit wire between the
indoor and outdoor units
so that the
terminal numbers match
. Tighten the
terminal screws securely. We recommend a
flathead screwdriver be used to tighten the
screws.
(1)
European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-
voltage systems with input current >16 A and
≤
75 A per phase.
Top plate
PCB
2) Remove the drip
proof cover.
1) Remove the
3 screws.
3) Cut jumper J6.
Drip proof cover
RX-42
10A
RX-50
15A
Safety
breaker
Earth leakage
circuit breaker
Earth
Inter-unit wire
4-core 1.5mm² or more
H05RN
Firmly fix the wires with
the terminal screws.
Outdoor unit
Indoor
unit
Power
supply
50Hz 220-240V
Firmly fix the wires with
the terminal screws.
Power supply wire
3-core 2.5mm² or more
H05RN
