Hitachi RPS-90AN User manual

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

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.
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.
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.
：
▲DANGER
！
▲WARNING
！：
NOTE
：
▲AUTIONC
！
：

—CONTENTS —
No. Item Page
Operation Instruction ……………………………………………………………….. 1
1. PREPARATION
1.1 Installation Location ……………………………………………………………….. 8
1.2 Installation Space …………………………………………………………………...8
1.3 Foundation …………………………………………………………………………..10
1.4 Unit Check …………………………………………………………………………..10
2. INSTALLATION
2.1 Anti-tumbler for Indoor Unit ………………………………………………………11
2.2 Anti-tumbler for Outdoor Unit………………………………………………………12
3. REFRIGERANT AND DRAINAGE PIPING
3.1 Preparations ………………………………………………………………………..13
3.2 Refrigerant Piping ……………………………………………………………….....14
3.3 Drainage Piping ……………………………………………………………….........15
4. EVACUATION AND REFRIGERANT CHARGE
4.1 Evacuation Procedure ………………………………………………………........16
4.2 Refrigerant Charge ……………………………………………………………….16
5. ELECTRICAL WIRING
5.1 Schedule Check………………………………………..........................................17
5.2 Main Power Wiring Procedures…………..........................................................17
5.3 Main Power Wiring Specification......................................................................18
5.4 Control Wiring……………………………………………......................................18
5.5 Grounding Specification...................................................................................18
6. TEST RUNNING
6.1 Final Installation Check………………...............................................................19
6.2 Preparation…...................................................................................................19
6.3 Test Running....................................................................................................19
6.4 Safety and Control Device Setting…................................................................20
7. MAINTENANCE
7.1 Components………………………………………………………….......................21
7.2 Lubrication…………………………………………………………………...............21
7.3 Refrigerant Charge…………………………………………………………….........21
7.4 Compressor Removal…………………………………………………………........21
7.5 Start-Up After Extended Shutdown………………………………………………..22
7.6 Replacement of Parts……………………………………………….......................22

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

Operation Instructions Operation Instructions
◆Precautions on Usage
- 2 -
It may cause accidents and may injure
and damage the units.
Don’t insert any material into the air
inlet and air outlet.
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.
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 can not be
reached.
Overloaded heat source should be reduced.
It may cause fire.
Don’t spray flammable gas toward the air
conditioner.
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.
Doors or windows should be closed
properly to prevent the cooled air to leak
outside the room.
Set up window curtains or window blinds.
It can insulate the
heat source
coming through
the windows.
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
g
round.
When there is possibility of lightning strike.
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 5oC to 7oC between the
indoor and the outdoor is
appropriate).