Hitachi RAI-25QPB User manual

CEILING CASSETTE TYPE AIR CONDITIONER
INDOOR UNIT
RAI-25QPB
RAI-35QPB
RAI-50QPB
INDOOR UNIT
MODEL
RAI-25QPB
RAI-35QPB
RAI-50QPB
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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 OPERATION
● Avoid an extended period of direct air flow for your health.
W
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● 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.
● 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.
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●During thunder storm, disconnect and turn off the circuit breaker.
WARNING
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.
CAUTION
!
!
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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 can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance shall not be made
by children without supervision.
●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.
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●The product shall be operated under the manufacturer specification and
not for any other intended use.
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INDOOR UNIT
NAMES AND FUNCTIONS OF EACH PART
PRE-FILTER
To prevent dust from coming into the indoor unit.
(Refer page 10)
INDOOR UNIT INDICATORS
Light indicator showing the operating condition.
(Refer page 6)
SUCTION GRILL (AIR INLET)
HORIZONTAL DEFLECTOR (AIR OUTLET)
REMOTE CONTROL
Send out operation signal to the indoor unit. So as to
operate the whole unit.
(Refer Remote Controller Manual)
●Recommended to replace the air cleaning filter after every 3 months for normal usage. Type number for
this air cleaning filter is <SPX-NTW1>. Please use this number for ordering when you want to renew it.
NOTE
WIDTH (mm)
580
MODEL
RAI-25QPB, 35QPB, 50QPB
HEIGHT (mm)
285
DEPTH (mm)
580
MODEL NAME AND DIMENSIONS
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MULTI-AIR CONDITIONER
When operation mode is selected:
Combination of Operations:
●You cannot operate the indoor units in the
following combinations.
●The indoor unit which is turned on first continues
to operate. Other indoor units which are turned
on later go into standby mode and the operation
lamp lights.
●To operate the indoor units turned on later, set
the operation mode as same as the indoor unit
turned on first.
During automatic operation:
●When heating operation is automatically selected for the first indoor unit, the next indoor unit will then
start to heat. Also, if cooling or dehumidifying is automatically selected for the first indoor unit, the next
indoor unit will also start to cool or dehumidify.
OPERATING RANGE
Operation mode
Outdoor temperature
Cooling / Dehumidifying
–10 to 43°C
Heating
–15 to 21°C
Several indoor units can be connected to one outdoor unit. You can operate only one unit or several units
according to your needs.
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 flow 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.
One unit
Heating
Other unit
Cooling
Dehumidifying
Fan
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INDOOR UNIT INDICATORS
OPERATION INDICATOR
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 an 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.
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. The lamp goes out when
the “ (AUTO SWING)” button is pressed
while the device is on “STANDBY MODE”.
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
Press
Non-
conducted
stick
about 5.5mm
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MEMO
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Note
●The recommended temperature range for safety testing should be as below:
Cooling Heating
Minimum Maximum Minimum Maximum
Indoor Dry bulb °C 21 32 20 27
Wet bulb °C 15 23 12 19
Outdoor Dry bulb °C 21 43 2 21
Wet bulb °C 15 26 1 15
CIRCUIT BREAKER
When you do not use the room air conditioner, set the circuit breaker to “OFF”.
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Suitable Room Temperature Install curtain or blinds
Ventilation Effective Usage Of Timer
Do Not Forget To Clean The Pre-Filter Please Adjust Suitable Temperature
For Baby And Children
!Warning
Freezing temperature
is bad for health and a
waste of electric power.
It is possible
to reduce
heat entering
the room
through
windows.
At night, please use the “OFF or ON timer
operation mode”, together with your wake
up time in the morning. This will enable you
to enjoy a comfortable room temperature.
Please use the timer effectively.
Dusty air filter will reduce the air volume
and the cooling efficiency. To prevent from
wasting electric energy, please clean the
filter every 2 weeks.
Please pay attention to the room temperature
and air flow direction when operating the unit
for baby, children and old folks who have
difficulty in movement.
!Caution
Do not close the room for a long period
of time. Occasionally open the door and
windows
to allow the
entrance of
fresh air.
THE IDEAL WAYS OF OPERATION
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FOR USER’S INFORMATION
The Air Conditioner And The Heat Source In The Room
Not Operating For A Long Time
When Lightning Occurs
!Caution
If the amount of heat in the room is above the
cooling capability of the air conditioner (for
example: more people entering the room, using
heating equipments and etc.), the preset room
temperature cannot be achieved.
When the indoor unit is not to be used for a long
period of time, please switch off the power from the
mains. If the power from mains remains “ON”, the
indoor unit still consumes about 12W (depends on
outdoor unit connected) in the operation control
circuit even if it is in “OFF” mode.
Warning
To protect the whole unit during lightning, please
stop operating the unit and remove the plug from
the socket.
Interference From Electrical Products
Caution
To avoid noise interference, please place the
indoor unit and its remote controller at least 1m
away from electrical products.
Inverter-type
fluorescent
lamp.
TV
To prevent
interference,
place at least
1m away.
!
!
OFF
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MAINTENANCE
Cleaning and maintenance must be carried out by qualified service personnel.
Before the cleaning, stop operation and disconnect the power supply.
Clean the filter at least once every one month. This helps save electricity cost.
1. CLEANING OF PRE-FILTER
CAUTION
1Remove the filter from indoor
●Press the mark “PUSH” on the left and
right sides of the suction grille.
●Pull out the filter from the grille.
2Remove dust from the filter using a vacuum
cleaner.
If there is too much dust, use neutral
detergent. After using neutral detergent, wash
with clean water and dry in the shade.
3Install the filter. (Set it with “UP SIDE” mark
facing front.)
Slot the filter to suction grille and close as
original state.
(Press the mark “PUSH” at the left and right
sides of the suction grille to fix it securely.)
CAUTION
●Do not wash with hot water at more than 40°C. The filter may shrink.
●When washing it, shake off moisture completely and dry it in the shade; do not expose it directly
to the sun. The filter may shrink.
●Do not operate the air conditioner with the filter removed. Dust may enter the air conditioner and
cause trouble.
REMOVAL AND ATTACHMENT OF PRE-FILTER
!
PROCEDURE
!
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