Hitachi RAF-25NXA1, RAC-25NXA1, RAF-35NXA1, RAC-35NXA1, RAF-50NXA1 Instruction Manual
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INDOOR UNIT/OUTDOOR UNIT
MODEL
RAF-25NXA1 / RAC-25NXA1
RAF-35NXA1 / RAC-35NXA1
RAF-50NXA1 / RAC-50NXA1
OUTDOOR UNIT FOR
SINGLE SPLIT MODEL
RAF-25NXA1
RAF-35NXA1
RAF-50NXA1
Instruction manual
Page 1~22
To obtain the best performance and ensure years of trouble free use, please read this instruction manualcompletely.
SPLIT TYPE AIR CONDITIONER
RAC-50NXA1
INDOOR UNIT
RAC-25NXA1
RAC-35NXA1
– 2 –
PRECAUTIONS DURING OPERATION
WARNING
WARNING
SAFETY PRECAUTION
• Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.
• Pay special attention to signs of “
Warning” and “ Caution”. The “Warning” section contains matters
which, if not observed strictly, may cause death or serious injury. The “Caution” section contains matters
which may result in serious consequences if not observed properly. Please observe all instructions strictly to
ensure safety.
• The signs indicate the following meanings. (The following are examples of signs.)
• Please keep this manual after reading.
• Do not reconstruct the unit.
Water leakage, fault, short circuit or fire may occur if you reconstruct the unit by
yourself.
• Please ask your sales agent or qualified technician for the installation of your unit.
Water leakage, short circuit or fire may occur if you install the unit by yourself.
• Please use earth line.
Do not place the earth line near water or gas pipes, lightning-conductor, or the
earth line of telephone. Improper installation of earth line may cause electric
shock or fire.
• Be sure to use the specified piping set for R410A. Otherwise, this may result in
broken copper pipes or faults.
• A circuit breaker should be installed depending on the mounting site of the unit.
Without a circuit breaker, the danger of electric shock exists.
• Do not install the unit near a location where there is flammable gas. The outdoor unit
may catch fire if flammable gas leaks around it. Piping shall be suitable supported
with a maximum spacing of 1m between the supports.
• Please ensure smooth flow of water when installing the drain hose.
• Make sure that a single phase 220V or 230V or 240V power source is used.
The use of other power sources may cause electrical components to overheat and
lead to fire.
PRECAUTIONS DURING INSTALLATION
PROHIBITION
CONNECT EARTH LINE
PROHIBITION
PROHIBITION
WARNING
CAUTION
• Avoid an extended period of direct air flow for your health.
• Should abnormal situation arise (like burning smell), please stop operating the unit
and remove plug from the socket. Contact your agent. Fault, short circuit or fire may
occur if you continue to operate the unit under abnormal situation.
• Please contact your agent for maintenance. Improper self maintenance may cause electric shock
and fire.
• Please contact your agent if you need to remove and reinstall the unit. Electric shock or fire may occur
if you remove and reinstall the unit yourself improperly.
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
• Do not use any conductor as fuse wire, this could cause fatal accident.
• During thunder storm, disconnect the plug top and turn off the circuit breaker.
• Do not put objects like thin rods into the panel of blower and suction side because
the high-speed fan inside may cause danger.
• Spray cans and other combustibles should not be located within a meter of the air
outlets of both indoor and outdoor units.
As a spray can’s internal pressure can be increased by hot air, a rupture may result.
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
"OFF"
This sign in the figure indicates prohibition. Indicates the instructions that must be followed.
"OFF"
– 3 –
ENGLISH
DEUTSCHFRANÇAISITALIANOSPANISHPORTUGUÊS∂ППЛУИО¿РУССКИЙ
• Do not place plants directly under the air flow as it is bad for the plants.
• Do not direct the cool air coming out from the air-conditioner panel to face household
heating apparatus as this may affect the working of apparatus such as the electric
kettle, oven etc.
• The product shall be operated under the manufacturer specification and not for any
other intended use.
PRECAUTIONS DURING OPERATION
CAUTION
• Do not attempt to operate the unit with wet hands, this could cause fatal accident.
• When operating the unit with burning equipments, regularly ventilate the
room to avoid oxygen insufficiency.
• Please ensure that outdoor mounting frame is always stable, firm and without
defect. If not, the outdoor unit may collapse and cause danger.
• Do not wash the unit with water or place a water container such as a vase on the
indoor unit.
Electrical leakage could be present and cause electric shock.
• Be sure to stop the operation by using the remote controller and turn off the circuit
breaker during cleaning, the high-speed fan inside the unit may cause danger.
• Turn off the circuit breaker if the unit is not be operated for a long period.
• Do not climb on the outdoor unit or put objects on it.
• When operating the unit with the door and windows opened, (the room humidity is
always above 80%) and with the air deflector facing down or moving automatically
for a long period of time, water will condense on the air deflector and drips down
occasionally. This will wet your furniture. Therefore, do not operate under such
condition for a long time.
• If the amount of heat in the room is above the cooling or heating capability of the unit
(for example: more people entering the room, using heating equipments and etc.),
the preset room temperature cannot be achieved.
• Indoor unit cleaning must be performed by authorized personnel only. Consult your
sales agent.
Using a commercially available detergent or similar can damage the plastic parts
or clog the drain pipe, causing water to drip with potential electric shock hazard.
• Do not touch the air outlet, bottom surface and aluminum fin of the outdoor
unit.
You may get hurt.
• Do not touch the refrigerant pipe and connecting valve.
Burns may result.
PROHIBITION
DON'T WET
PROHIBITION
PROHIBITION
PROHIBITION
DON’T TOUCH
"OFF"
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
PROHIBITION
DON’T TOUCH
STRICTLY OBSERVE
PRECAUTIONS
"OFF"
• This appliance is not intended for use by young children or infirm persons unless they have been
adequately supervised by a responsible person to ensure that they can use this appliance safely.
• Young children should be supervised to ensure that they do not play with the appliance.
– 4 –
NAMES AND FUNCTIONS OF EACH PART
MODEL NAME AND DIMENSIONS
INDOOR UNIT
Indoor unit
indicators
Horizontal air
deflector
Air filter
Front panel
Signal receiver
OUTDOOR UNIT FOR
SINGLE SPLIT MODEL
Remote controller
* OUTDOOR UNIT for single split model.
MODEL WIDTH HEIGHT DEPTH
RAF-25NXA1
RAF-35NXA1
760mm 600mm 235mm
RAF-50NXA1
(INDOOR UNIT)
RAC-25NXA1* 750mm 548mm 288mm
RAC-35NXA1* 750mm 548mm 288mm
RAC-50NXA1* 792mm 600mm 299mm
RAC-25NXA1
RAC-35NXA1
RAC-50NXA1
– 5 –
ENGLISH
DEUTSCHFRANÇAISITALIANOSPANISHPORTUGUÊS∂ППЛУИО¿РУССКИЙ
Open the front panel
1. To open the front panel, use the remote controller to stop unit
operation. Then press at the top left and right corners of the front
panel.
2. Grasp the left and right sides of the front panel and open it toward
you.
Close the front panel
1. To close the front panel, press the upper center part of the front
panel.
2. Press at the top left and right corners of the front panel.
TIMER lamp
This lamp lights when the timer is
working.
OPERATION lamp
This lamp lights during operation.
During heating, the operation indicator may
blink, blowing very lightly or totally stopping
under the following conditions:
(1) During preheating (heating
operation)
For about 2~3 minutes after start up.
(2) During defrosting (heating
operation)
Defrosting will be performed about
once an hour when frost forms on the
heat exchanger of the outdoor unit, for
5~10 minutes each time. (If the piping
length used is longer than usual, frost
will likely to form.)
TEMPORARY SWITCH
Top left and right corners
TEMPORARY SWITCH
TEMPORARY SWITCH
If the remote controller does not work due to
battery failure, press this switch to start and stop
operation.
• This temporary operation will be at the most
recent setting made. (The unit will immediately
go into automatic operation once power is
switched on.)
Upper center part
INDOOR UNIT INDICATORS
HOW TO OPEN OR CLOSE THE FRONT PANEL
FILTER lamp
This lamp lights when the
device is operated for a total
of about 200 hours, it is time
to clean the filter. The lamp
goes out when the “
(AUTO
SWING)” button is pressed
while the operation is stopped.
– 6 –
SILENT
LOW
MED
HI
AUTO
HEAT
DEHUMIDIFY
COOL
FAN
FAN SPEED
SLEEPING
STOP (CANCEL)
START (RESERVE)
START/STOP
TIME
TIMER SET
TIMER SELECTOR
ON TIMER
OFF TIMER
AUTO SWING
NAMES AND FUNCTIONS OF EACH PART
REMOTE CONTROLLER
• This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is controlled
electronically, the range of control may be shorter, in some cases, the control signal may not be received.
This unit can be fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit can be
controlled from the remote controller.
• Handle the remote controller with care. Dropping it or getting it wet may compromise its signal transmission
capability.
• After new batteries are inserted into the remote controller, the unit will initially require approximately 10 seconds
to respond to commands and operate.
Precautions for Use
• Do not put the remote controller in the following places.
• In direct sunlight.
• In the vicinity of a heater.
• Handle the remote controller carefully. Do not drop it on the floor, and protect
it from water.
•
Once the outdoor unit stops, it will not restart for about 3 minutes (unless you
turn the power switch off and on or unplug the power cord and plug it in again).
This is to protect the device and does not indicate a failure.
• If you press the FUNCTION selector button during operation, the device may
stop for about 3 minutes for protection.
●
Signal emitting window/transmission sign
Point this window toward the indoor unit when controlling it.
The transmission sign blinks when a signal is sent.
●
Display
This indicates the room temperature selected, current time, timer status, function
and intensity of circulation selected.
●
START/STOP button
Press this button to start operation. Press it again to stop operation.
●
AUTO SWING button
Controls the angle of the horizontal air deflector.
●
FAN SPEED selector
This determines the fan speed. Every time you press this button, the intensity of
circulation will change from (AUTO) to (HI) to (MED) to (LOW) to
(SILENT). (This button allows selecting the optimal or preferred fan speed
for each operation mode.)
●
SLEEP button
Use this button to set the sleep timer.
●
TEMPERATURE buttons
Use these buttons to raise or lower the temperature setting. (Keep pressed, and
the value will change more quickly.)
●
TIME button
Use this button to set and check the time.
●
RESET button
Press this button after the batteries are replaced or when some irregular operation
is found.
●
FUNCTION selector
Use this button to select the operating mode. Every time you press it, the mode
will change from (AUTO) to (HEAT) to (DEHUMIDIFY) to (COOL)
and to (FAN) cyclically.
●
FAN SPEED selector
●
AUTO SWING button
●
TIMER control
Use these buttons to set the timer.
●
OFF-TIMER button Select the turn OFF time.
●
ON-TIMER button Select the turn ON time.
●
RESERVE button Time setting reservation.
●
CANCEL button Cancel time reservation.
– 7 –
ENGLISH
DEUTSCHFRANÇAISITALIANOSPANISHPORTUGUÊS∂ППЛУИО¿РУССКИЙ
VARIOUS FUNCTIONS
■ Auto Restart Control
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT, COOL, or DEHUMIDIFY, depending
on the initial room temperature. The selected mode of operation will change when the room temperature
varies. However, the mode of operation will not change when indoor unit connected to multi type outdoor
unit.
Press the (FAN SPEED) button. AUTO, LOW and SILENT are available.
Press the (START/STOP) button.
Operation starts with a beep.
Press the button again to stop operation.
■ As the settings are stored in memory in the remote controller, you only have
to press the (START/STOP) button next time.
You can raise or lower the temperature setting as necessary by maximum
of 3°C.
Press the temperature button and the temperature
setting will change by 1°C each time.
• The preset temperature and the actual room temperature may vary
somewhat depending on conditions.
1
START
STOP
Press the FUNCTION selector so that the display indicates the
(AUTO) mode of operation.
• When AUTO has been selected, the device will automatically
determine the mode of operation, HEAT or COOL depending on
the current room temperature.
• When AUTO is first selected, the device will determine the current
room temperature and select the proper operation mode
accordingly.
• When the air conditioner has adjusted the room's temperature to
the near preset temperature, it will begin to monitor operation. If
the room temperature subsequently changes, the air conditioner
will once again select the appropriate operation (heating or cooling)
to adjust the temperature to the preset temperature. The monitoring
operation range is + 3°C relative to the preset temperature.
• If the mode automatically selected by the unit is not satisfactory,
manually change the mode setting (heat, dehumidify, cool or fan).
• If there is a power failure, operation will be automatically restarted when the power is resumed with
previous operation mode and airflow direction.
(As the operation is not stopped by remote controller.)
• If you intend not to continue the operation when the power is resumed, switch off the power supply.
When you switch on the circuit breaker, the operation will be automatically restarted with previous
operation mode and airflow direction.
Note: 1. If you do not require Auto Restart Control, please consult your sales agent.
2. Auto Restart Control is not available when Timer or Sleep Timer mode is set.
– 8 –
Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).
(AUTO) : The fan speed changes automatically according
to the temperature of the air which blows out.
(HI) : Economical as the room will become warm
quickly.
But you may feel a chill at the beginning.
(MED) : Quiet.
(LOW) : More quiet.
(SILENT) : Silent.
HEATING OPERATION
• Use the device for heating when the outdoor temperature is under 21°C.
When it is too warm (over 21°C), the heating function may not work in order to protect the device.
• In order to keep reliability of the device, please use this device above -15°C of the outdoor temperature.
Press the FUNCTION selector so that the display indicates
(HEAT).
■ As the settings are stored in memory in the remote controller, you only have
to press the (START/STOP) button next time.
Set the desired room temperature with the TEMPERATURE buttons
(the display indicates the setting).
The temperature setting and the actual room temperature may vary
somewhat depending on conditions.
Press the (START/STOP) button. Heating operation starts with
a beep. Press the button again to stop operation.
1
3
2
START
STOP
■ Defrosting
Defrosting will be performed about once an hour when frost forms on the heat exchange of the outdoor unit,
for 5~10 minutes each time.
During defrosting operation, the operation lamp blinks in cycle of 3 seconds on and 0.5 second off.
The maximum time for defrosting is 20 minutes.
However, if it is connected to multi type outdoor unit, the maximum time for defrosting is 15 minutes.
(If the piping length used is longer than usual, frost will likely to form.)
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