Hitachi RAK-18NH6AS User manual

ENGLISHDEUTSCHFRANÇAISITALIANOESPAÑOL
PORTUGUÊS
EλληνικάРУССКИЙ
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT
RAK-18NH6AS
RAK-18NH6A
RAK-25NH6A
RAK-35NH6A
RAK-50NH6A
INDOOR UNIT
MODEL
RAK-18NH6AS
RAK-18NH6A
RAK-25NH6A
RAK-35NH6A
RAK-50NH6A
HITACHI
DC INVERTER
TEMPORARY
SWITCH

– 2 –
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 sign indicate the following meanings.
●
Make sure to connect earth line. The sign in the figure indicates prohibition.
Indicates the instructions that must be followed.
Please keep this manual after reading.
●
PRECAUTIONS DURING INSTALLATION
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.
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 near location where there is flammable gas. The outdoor unit may
●
catch fire if flammable gas leaks around it.
Please ensure smooth flow of water when installing the drain hose.
●
WARNING
!
CAUTION
!
PRECAUTIONS DURING OPERATION
Avoid an extended period of direct air flow for your health.●
W
A
R
N
I
N
G
!
Do not insert a finger, a rod or other objects into the air outlet or inlet. As the fan●
is rotating at a high speed, it will cause injury. Before cleaning, be sure to stop the
operation and turn the breaker OFF.
During thunder storm, disconnect and turn off the circuit breaker.
●
Do not use any conductor as fuse wire, this could cause fatal accident.●
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
Should abnormal situation arises (like burning smell), please stop operating the●
unit and turn off the circuit breaker. 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.
If the supply cord is damaged, it must be replaced by the special cord obtainable at
●
authorized service/parts centers.
W
A
R
N
I
N
G
!
Instruction Manual 1642.indb 2 2/11/2010 2:33:36 PM

– 3 –
ENGLISH
PRECAUTIONS DURING OPERATION
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.
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.
Do not use any aerosol or hair sprays near the indoor unit. This chemical
●
can adhere on heat exchanger fin and blocked the evaporation water flow to
drain pan. The water will drop on tangential fan and cause water splashing
out from indoor unit.
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 splash or direct water to the body of the unit when cleaning it as this●
may cause short circuit.
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.
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 the appliance safely.
Young children should be supervised to ensure that they do not play with the appliance.●
Do not climb on the outdoor unit or put objects on it.●
Please switch off the unit 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 to be operated for a long period.
●
C
A
U
T
I
O
N
!
The product shall be operated under the manufacturer specification and●
not for any other intended use.
Do not put water container (like vase) on the indoor unit to avoid water●
dripping into the unit. Dripping water will damage the insulator inside the unit
and causes short-circuit.
Do not place plants directly under the air flow as it is bad for the plants.●
Instruction Manual 1642.indb 3 2/11/2010 2:33:37 PM

– 2 –
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
Air filter
To prevent dust from coming into the indoor unit.
(Refer Instruction manual)
Front panel
Indoor unit indicators
Light indicator showing the operating condition.
(Refer page 3)
Horizontal deflector ●Vertical deflector
(Air Outlet)
Remote controller
Send out operation signal to the indoor unit.So as
to operate the whole unit.
(Refer Instruction manual)
●Air cleansing filters are washable and can be use in 1 year time.Type number for this air cleansing
filter is <SPX-CFH20>.Please use this number for ordering when you want to renew it.
●Air cleansing filter should be cleaned every month or sooner if noticeable loading occurs.When
used overtime, it may loose its deodorizing function.For maximum performance, it is recommended
to replace it every 1 year depending on application requirements.
NOTE
MODEL NAME AND DIMENSIONS
MODEL WIDTH (mm) HEIGHT (mm) DEPTH (mm)
RAK-18NH6AS/RAK-18NH6A/RAK-25NH6A/
RAK-35NH6A/RAK-50NH6A 780 280 220
HITACHI
DC INVERTER
TEMPORARY
SWITCH
HITACHI

– 3 –
ENGLISH
INDOOR UNIT INDICATORS
OPERATION INDICATOR
FILTER LAMP
When the device is operated for a total of about 200
hours, the FILTER lamp lights to indicate that it is time
to clean the filter.
OPERATION LAMP
This lamp lights during operation.
The OPERATION LAMP flashes in the following cases
during heating.
(1) During preheating
For about 2–3 minutes after starting up.
(2) During defrosting
Defrosting will be performed about once every one
hour when frost forms on the heat exchanger of the
outdoor unit, for 5–10 minutes each time.
TIMER LAMP
This lamp lights when the timer is working.
TEMPORARY SWITCH
Use this switch to start and stop when the remote controller does not work.[Use non-conductor stick
(example:toothpick)]
●By pressing the temporary switch, the operation is done in previously set operation mode.
●When the operation is done using the temporary switch after the power source is turned off and turn
on again, the operation is done in automatic mode.
TEMPORARY
SWITCH
TEMPORARY
SWITCH
Temporary Switch
Press
Non-conductor Stick

– 4 –
NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT
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.
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.
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.
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 and date.
RESET buttons●
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●
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).
AUTO SWING button●
Controls the angle of the horizontal air deflector.
TIMER control
●
Use this button 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.
Precautions for Use
Do not put the remote controller in the following places.●
Under 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.
AUTO
HEAT
DEHUMIDIFY
COOL
FAN
FAN SPEED
SILENT
LOW
MED
HI
SLEEPING
STOP (CANCEL)
START (RESERVE)
START/STOP
TIME
TIMER SET
TIMER SELECTOR
ON TIMER
OFF TIMER
AUTO SWING
Instruction Manual 1642.indb 4 2/11/2010 2:33:37 PM

– 5 –
ENGLISH
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT, COOL or DEHUMIDIFY depending on
the current 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.
VARIOUS FUNCTIONS
■Auto Restart Control
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 or OFF by remote
control.
2. Auto Restart Control is not available when Timer or Sleep Timer mode is set.
As the settings are stored in memory in the remote controller, you■
only have to press the (START/STOP) button next time.
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, COOL or
DEHUMIDIFY depending on the current room temperature.
However the mode of operation will not change when indoor
unit connected to multi type outdoor unit.
If the mode automatically selected by the unit is not●
satisfactory, manually change the mode setting (heat,
dehumidify, cool or fan).
Press the (START/STOP) button.
Operation starts with a beep.
Press the button again to stop operation.
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.
The display does not indicate the preset temperature in the●
AUTO mode. If you change the setting, the indoor unit will
produce a beep.
START
STOP
°C
Press the (FAN SPEED) button, AUTO, LOW and SILENT is
available.
1
Instruction Manual 1642.indb 5 2/11/2010 2:33:38 PM

– 6 –
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).
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) : Fan speed slow.
(LOW) : Fan speed slower.
(SILENT) : Fan speed ultra slower.
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.
As the settings are stored in memory in the remote controller, you only
■
have to press the (START/STOP) button next time.
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.)
2
3
1
Instruction Manual 1642.indb 6 2/11/2010 2:33:39 PM

– 7 –
ENGLISH
DEHUMIDIFYING OPERATION
■Dehumidifying Function
When the room temperature is higher than the temperature setting: The device will dehumidify the room,●
reducing the room temperature to the preset level.
When the room temperature is lower than the temperature setting: Dehumidifying will be performed at the
temperature setting slightly lower than the current room temperature, regardless of the temperature setting.
The function will stop (the indoor unit will stop emitting air) as soon as the room temperature becomes lower
than the setting temperature.
The preset room temperature may not be reached depending on the number of people present in the room
●
or other room conditions.
Set the desired room temperature with the TEMPERATURE button
(the display indicates the setting).
The range of 20-26˚C is recommended as the room
temperature for dehumidifying.
Press the (START/STOP) button. Dehumidifying 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.
START
STOP
Press the FUNCTION selector so that the display indicates
(DEHUMIDIFY).
The FAN SPEED is set at LOW or SILENT.
Use the device for dehumidifying when the room temperature is over 16°C.
When it is under 15°C, the dehumidifying function will not work.
1
2
Instruction Manual 1642.indb 7 2/11/2010 2:33:39 PM

– 8 –
COOLING OPERATION
Use the device for cooling when the outdoor temperature is - ~ 43°C.
If in doors humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit.
Press the FUNCTION selector so that the display indicates
(COOL).
Set the desired FAN SPEED with the (FAN SPEED) button (the
display indicates the setting).
(AUTO) : The FAN SPEED is HI at first and varies to
MED or LOW automatically when the preset
temperature has been reached.
(HI) : Economical as the room will become cool
quickly.
(MED) : Fan speed slow.
(LOW) : Fan speed slower.
(SILENT) : Fan speed ultra slower.
Set the desired room temperature with the TEMPERATURE button
(the display indicates the setting).
The temperature setting and the actual room temperature may vary
some how depending on conditions.
Press the (START/STOP) button. Cooling operation starts with a
beep. Press the button again to stop operation.The cooling function
does not start if the temperature setting is higher than the current
room temperature (even though the (OPERATION) lamp lights).
The cooling function will start as soon as you set the temperature
below the current room temperature.
As the settings are stored in memory in the remote controller, you only
■
have to press the (START/STOP) button next time.
START
STOP
1
2
3
Instruction Manual 1642.indb 8 2/11/2010 2:33:39 PM
21