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Hitachi
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RAD-50NHA2
Instructions Manual
22 pgs802.59 Kb0

Hitachi RAD-18NHA2, RAD-25NHA2, RAD-50NHA2, RAD-35NHA2 Instructions Manual

– 1 –
SPLIT TYPE AIR CONDITIONER
INDOOR UNIT
INDOOR UNIT
MODEL
RAD-18NHA2 RAD-25NHA2 RAD-35NHA2 RAD-50NHA2
RAD-18NHA2 RAD-25NHA2 RAD-35NHA2 RAD-50NHA2
– 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.
●
Please keep this manual after reading.
WARNING
PRECAUTIONS DURING INSTALLATION
●
Do not reconstruct the unit.
Water leakage, fault, short circuit or fi re may occur if you reconstruct the unit by yourself.
●
Please ask your sales agent or qualifi ed technician for the installation of your unit. Water
leakage, short circuit or fi re 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.
●
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 fl ammable gas. The outdoor unit may catch
fi re if fl ammable gas leaks around it.
●
Please ensure smooth fl ow of water when installing the drain hose.
●
Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist
fl ows to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance and may deform and in the worst case, breake the plastic parts of the indoor unit.
CAUTION
!
!
PRECAUTIONS DURING SHIFTING OR MAINTENANCE
PRECAUTIONS DURING OPERATION
● Avoid an extended period of direct air fl ow for your health.
W A R N
I N G
!
●
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 fi re 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 fi re.
●
Please contact your agent if you need to remove and reinstall the unit. Electric shock or fi re
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.
● Do not insert a fi nger, 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.
!
Make sure to connect earth line.
Indicates the instructions that must be followed.
The sign in the fi gure indicates prohibition.
W
A
R N
I N G
!
– 3 –
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 insuffi ciency.
● 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 place plants directly under the air fl ow as it is bad for the plants.
● Please ensure that outdoor mounting frame is always stable, fi rm 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 defl ector facing down or moving automatically for a long period of time, water will condense on the air defl ector 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 infi rm 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 specifi cation 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 use any aerosol or hair sprays near the indoor unit. This chemical
can adhere on heat exchanger fi n and blocked the evaporation water fl ow to drain pan. The water will drop on tangential fan and cause water
splashing out from indoor unit.
– 4 –
MULTI-AIR CONDITIONER
With this multi-air conditioner, several indoor units can be connected to one outdoor unit to be driven. You can operate the required number of indoor units.
Combination of Operations:
● You cannot operate the indoor units in the following combinations.
● The indoor unit which is switched on fi rst continues
to operate, but other indoor units which is switched on later does not operate while the lamp lights.
● To re-start an indoor unit which was operated later,
stop the indoor unit which was operated fi rst or later and reset the type of operation, then perform operation again.
One unit
Heating
Other unit
Cooling
Dehumidifying
Circulating (fan)
Adjusting the Number of Indoor Units:
Decrease the number of indoor units to be operated especially when it is very hot or cold or when you want to reach the present temperature quickly.
Stopped Indoor Units:
When an indoor unit is operated in the cooling, heating or dehumidifying mode in the room, the sound of refrigerant fl ow may be heard from a stopped indoor unit or a stopped indoor unit may become warm. This is because the indoor unit returns refrigerant to the outdoor unit to be ready for operation.
When operation mode is selected:
● When heating operation is automatically selected for the fi rst indoor unit, the next indoor unit will then
start to heat. Also, if cooling or dehumidifying is automatically selected for the fi rst indoor unit, the next indoor unit will also start to cool or dehumidify.
During automatic operation:
– 5 –
INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
WIDTH (mm)
750
MODEL
RAD-18NHA2/RAD-25NHA2/RAD-35NHA2/RAD-50NHA2
HEIGHT (mm)
235
DEPTH (mm)
400
MODEL NAME AND DIMENSIONS
– 6 –
NAMES AND FUNCTIONS OF REMOTE CONTROLLER
■ This controls the operation function and timer setting of the room air conditioner.
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 fl oor, 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 MODE SELECTOR button during operation, the device may stop for about 3 minutes
for protection.
OPERATION LAMP
START/STOP Button
Press this button to start operation. Press it again to stop operation.
Transmission Sign
The transmission sign blinks when a signal has been send.
RESET SWITCH
ROOM TEMPERATURE Setting Button
Room temperature setting. Value will change quicker when keep pressing.
CANCEL Button
Cancel timer reservation.
FAN SPEED Button
This determines the fan speed. Every time you press this button, the intensity of circulation will change from
(AUTO) to (HIGH) to (MED) to (LOW) to (SILENT)(This button allows selecting the optimal or preferred fan speed for each operation mode).
MODE SELECTOR Button
Use this button to select the operating mode. Every time you press it, the mode will change from
(AUTO) to (HEAT) to (DEHUMIDIFY) and to (COOL) cyclically.
SLEEP Button
Use this button to set the sleep timer. (
Page 13)
SET Button
Timer setting reservation.
OFF TIMER Button
Select the turn OFF timer.
ON TIMER Button
Select the turn ON timer.
– 7 –
AUTOMATIC OPERATION
The device will automatically determine the mode of operation, HEAT or COOL depending on the current room temperature. The selected mode of operation will change when the room temperature varies.
■ As the settings are stored in the memory in the remote controller,
you only have to press the
(START/STOP) button next time.
Press the MODE selector button 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. However the mode of operation will not change when indoor unit is connected to multi type outdoor unit.
● If the mode automatically selected by the unit is not
satisfactory, manually change the mode setting (HEAT, DEHUMIDIFY or COOL).
1
START
STOP
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.
(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.
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.
Press the (FAN SPEED) button to select AUTO, HIGH, MED,
LOW or SILENT.
Press the (START/STOP) button. Operation starts. Press the button again to stop operation.
2
Set the desired FAN SPEED with the (FAN SPEED) button (the display indicates the setting).
(AUTO) (HIGH) (MED)
(SILENT) (LOW)
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