Hitachi RAC-90JP User manual

Models :
Installation, Operation and Maintenance
INSTRUCTIONS MANUAL
Indoor Unit Outdoor Unit
RPS-90AN + RAC-90JP
HITACHI SPLIT-TYPE AIR CONDITIONERS
─ INVERTER DRIVEN ─
─ AIR-COOLED TYPE ─
IMPORTANT:
READ AND UNDERSTAND THIS
INSTRUCTION MANUAL BEFORE
USING THIS AIR CONDITIONER.
KEEP THIS MANUAL FOR FUTURE
REFERENCE.
65MP3195

IMPORTANT NOTICE
● HITACHI pursues a policy of continuing improvement in design and performance of its
products. Specification/Design are subject to change without prior notice.
● HITACHI cannot anticipate every possible circumstance that might involve a potential
hazard.
● This air conditioner is designed for standard air conditioning only. Do not use for other
purposes such as drying clothes, refrigerating foods or for any other cooling process.
● The installer and system specialist shall secure safety against leakage according to local
Regulations or standards.
● No part of this manual may be reproduced without written permission.
● Signal words (DANGER, WARNING and CAUTION) are used to identify levels of hazard
seriousness. Definitions for identifying hazard levels are provided below with their
respective signal words.
DANGER
▲
Immediate hazards which WILL result in severe personal injury or
death.
Hazards or unsafe practices which COULD result in severe personal
injury or death.
Hazards or unsafe practices which COULD result in minor personal
injury or product or property damage.
NOTE Useful information for this operation and/or maintenance.
● If you have any questions, contact your installer, dealer of HITACHI or our customer care.
● This manual gives you description and information on how to operate this air conditioning unit.
● This air conditioner has been designed from the following temperatures.
Indoor Temperature ( oC )
Outdoor Temperature ( oC )
Maximum
Minimum
Maximum
Minimum
32DB/23WB
21DB/15WB
43DB
21DB
This manual should be considered as a permanent part of the air conditioning equipment and
should remain with the air conditioning equipment.
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— CONTENTS —
No. Item Page
Operation Instructions....................................................................................1
1. PREPARATION
1.1 Installation Location............................................................................................6
1.2 Installation Space................................................................................................6
1.3 Foundation ...........................................................................................................8
1.4 Unit Check............................................................................................................8
2. INSTALLATION
2.1 Anti-tumbler for Indoor Unit ...............................................................................9
2.2 Anti-tumbler for Outdoor Unit ..........................................................................10
3. REFRIGERANT AND DRAINAGE PIPING
3.1 Preparations.......................................................................................................11
3.2 Refrigerant Piping..............................................................................................12
4. EVACUATION AND REFRIGERANT CHARGE
4.1 Evacuation Procedures....................................................................................14
4.2 Refrigerant Charge............................................................................................14
5. ELECTRICAL WIRING
5.1 Schedule Check ................................................................................................15
5.2 Main Power Wiring Procedures.......................................................................15
5.3 Main Power Wiring Specification....................................................................16
5.4 Control Wiring....................................................................................................16
5.5 Grounding Specification...................................................................................16
6. TEST RUNNING
6.1 Final Installation Check....................................................................................17
6.2 Preparation.........................................................................................................17
6.3 Test Running......................................................................................................17
6.4 Safety and Control Device Setting..................................................................18
7. MAINTENANCE................................................................................................19

- 1 -
Operation Instructions
◆ Name of Parts
Horizontal Louver
Air Outlet Vertical Louver
Front Cover
Air Inlet
Gas Refrigerant
Piping
Air Inlet Liquid Refrigerant
Piping
Field and Control
Wiring
Power Supply
Main Circuit
Breaker
Leakage Breaker
Air Outlet
Operation Instructions
OUTDOOR UNIT
INDOOR UNIT
WARNING

- 2 -
◆Precautions on Usage
Operation Instructions
Please use fuse/circuit breaker with
proper amperage.
Never use metal or copper wire as a fuse to
avoid fault or occurrence of fire hazard.
Don’t insert any material into the air
inlet and air outlet.
It may cause accidents and may injure
and damage the units.
Don’t spray flammable gas toward the
air conditioner.
It may cause fire.
Overloaded heat source should be reduced.
Set up window curtains or window blinds.
It can insulate the
heat source
coming through
the windows.
Doors or windows should be closed
properly to prevent the cooled air to leak
outside the room.
During cooling operation,
please don’t open
windows, entrances, and
exits unless necessary
and minimize as possible
the number of persons
entering or leaving the
room.
The setting of room temperature should be
suitable.
Adjust the temperature setting button
to a suitable index to maintain the
most comfortable temperature. Too
high or too low temperature will
cause discomfort. (A temperature
difference of 5 °C to 7 °C between
the indoor and the outdoor is
appropriate)
When there is possibility of lightning strike.
When there is a possibility of lightning strike, turn the
unit off to protect the air conditioner, and switch off the
power switch. Make sure that the unit is provided with
ground.
If there are heat sources which exceeds the air
conditioning capacity in the room (room with many
people entering or when using heat producing
appliances), set room temperature cannot be
reached.

- 3 -
Operation Instructions
◆ Wired remote controller (RC-A01ET1)
(For safety, please obey the following items)
1. Please read the user’s manual carefully before installation, keep this manual for future reference.
2. This wired remote controller is used for room air-conditioner only and not for any other extended use.
3. Do not install at places as below:
3.1. the place with oil spray of sulfur gas (fire, deformation, corruption, damage will result)
3.2 the place near coast and the salty environment will cause corrosion.
3.3 the place that children can easily touch.
3.4 the place near heat (fire).
3.5 the place of high humidity.
4. Use for the place where install medical instruments with electromagnetic wave, please watch out the
mal-operation of this device.
4.1 when installation, do not let the launching side of electromagnetic wave forward this device directly.
4.2 keep away from the source with electromagnetic wave at least 3m above. For example: radio
4.3 If noise signals generated by the unit, please add noise filter to countermeasure.
5. Because heat element designed inside, the surface is warm when we touch, this is a normal
phenomenon.
6. Do not pull out the communication wire to avoid the poor signal transmission.
1. Do not install at places where flammable objects and flammable gases exist, otherwise it may occur fire.
2. Never install the remote controller on an unstable base or fixed incompletely. It can fall easily andcause
fire, electric shock, even injury of a person.
3. Please follow the rules by the corresponding country’s national legislation to begin the wiring process. Be
sure to use the specific electric shock loop to avoid the insufficient of power volume and any fire or electric
shock caused by poor or wrong installation.
4. Please contact your agent for installation, improper self-installation may cause electric shock and fire.
5. Please choose the specified wire for the connection between indoor unit and outdoor unit. If wrong
specification of wire is used, it will cause electric shock.
6. Please turn off the power source before open the service cover for wiring to avoid the electric shock.
Operation Instructions
● Parts inside the box (Please check)
1. Wired remote controller x1 (communication wire x1, length = 9m)
2. Accessory assembly (plug x2, screw x2, cable tie x2)
CAUTION
Installation and Wiring

- 4 -
Operation Instructions
● Installation of Remote Controller
1. Separate the base of the wired remote controller. Please follow the procedure:
Use flat screwdriver to insert the groove and rotate lightly.
Be careful, do not break the claws near the groove, if the claws are broken then wired remote controller
will not easily fix on the base.
2. Installation for screws.
Please use the screws attached in the accessory assembly, fixed by opposite angle position.
NOTE! Always press once to turn the Remote-Control LCD light ON.
Operation Instructions
Name of each part
Main Function Introduction
SCAN ME
Scan this QR code with your mobile device to
see further instructions on how to maximize the
functions of your air conditioner and for other
related information.

- 5 -
Please contact your service center if the
problem is still not solved. Do not try to
repair the unit by yourself.
2
Removing
off air filter.
1 Turn the air
inlet open.
Switch the unit OFF before cleaning the air filter.
● Wiring
1. Method of connecting to air-conditioner:
1.1 Remove the front cover and electric box cover of the Indoor unit.
1.2 Connect the communication wire to the PCB of the Indoor unit (connector no: CN22)
1.3 Re-install the electric box cover and front cover, be careful don’t clip the wire.
● Abnormality
1. When abnormality occurs, there will be a display on the control panel indicating
“PRESS [ON/OFF] SWITCH TO RESTART”
2. Reset Button –when errors happen (the display is interfered by noise signal and system can’t
operate). Please use a small pin to insert in the hole and press 3 seconds above, under power ON
status. Then it will return to its initial factory setting.
● Power Failure
1. All the indications are OFF.
2. Once the unit is stop by power failure, the unit will not be started again although the power
recovers. Perform the starting procedures again.
3. In case of instantaneous power failure within 2 seconds the unit will be started again automatically.
◆ Troubleshooting
Unit does not start:
1. Is the main power source switch to the unit ON?
2. Is the main fuse normal?
Poor cooling operation:
1. Are there any obstacles which hamper sufficient
air to the indoor unit and outdoor unit coil?
2. Check the temperature setting to make sure that it
is set at the desired temperature.
3. Check the air filter if it is dirty or clogged.
◆ Maintenance
1. Clean or replace the air filter.
2. Clean the cabinet with clean dry cloth.
3. Clean the condensate drain pan and the drain
piping.
4. Clean the condenser and evaporator coil. Call
your serviceman to do this type of work.
5. Check for abnormal sound and vibration. If you
find abnormal sound and vibration, stop the unit,
and contact your service center for proper
maintenance.
Operation Instructions

- 6 -
1. Preparation
1.1 Installation Location
(1) Required Material –Measure, Architectural Information Regarding Installation Location.
(2) Confirm that the final installation location is provided with convenient piping and wiring work.
(3) Check the total piping length and difference in height between indoor and outdoor unit, it should not exceed the
following:
Maximum Piping Length
Difference in Height
Bending Quantity
under 30m
under 20m
under 12
(4) Do not install the air conditioner in place where there are flammable gases and acid solvents.
(5) Do not install the air conditioner near high-frequency machines.
(6) No radiation sources shall be allowed near the installation site.
(7) The installation shall be duly secured for vibration and noise. Hot air released from the outdoor unit shall be led
off the neighboring windows. Water drops, drainage, vibration and noise shall be kept off the neighborhood.
1.2 Installation Space
(1) Check for obstacles that restricts unit air flow or hamper maintenance and service work, keep a proper space
for operation.
◆ Operation Space for Indoor Unit
Preparation

- 7 -
Preparation
◆ Operation Space for Outdoor Unit
Individual Outdoor Unit
(1) In case of existence of
obstruction on top and
in the back (open
space at front and by
the side).
(2) In case of existence of
obstruction in the back
and by the side (open
space at front and on
top).
(3) In case of existence of
obstruction on the front
(open space in the back,
by the sides and on the
top)
(4) In case of existence
of obstruction in the
back and on the front
(open space by the
sides and on the top)
Combined Installation
(1) Horizontal
(5) In case of
existence of
obstruction in the
surrounding (open
space on top)
(2) 2-Unit Leveled Installation (3) Sequential Installation
Preparation