Hitachi Air 365 Series Manual

–
INSTALLATION AND
MAINTENANCE
MANUAL
–
INVERTER-DRIVEN
AIR CONDITIONERS
SET FREE SERIES
OUTDOOR UNITS
A16381E84N
MODELS
<BASE UNITS>
UNIVERSAL (HEAT PUMP AND HEAT RECOVARY)
(Standard Type)
RAS-080RNCCLW TO RAS-280RNCCLW
RAS-080RNCCRW TO RAS-280RNCCRW
(High Eiciency Type)
RAS-080RNCBLW TO RAS-200RNCBLW
EN INSTALLATION AND MAINTENANCE MANUAL
Original Instructions

Models
ii A16381E84N-rev.1
Models
Applicable Models
• ANZ
HP Universal
Standard Type High Eiciency Type
8HP RAS-080RNCCLW RAS-080RNCBLW
10HP RAS-100RNCCLW RAS-100RNCBLW
12HP RAS-120RNCCLW RAS-120RNCBLW
14HP RAS-140RNCCLW RAS-140RNCBLW
16HP RAS-160RNCCLW RAS-160RNCBLW
18HP RAS-180RNCCLW RAS-180RNCBLW
20HP RAS-200RNCCLW RAS-200RNCBLW
22HP RAS-220RNCCLW -
24HP RAS-240RNCCLW -
• LA
HP Universal
380 - 415 V 220 V
8HP RAS-080RNCCLW RAS-080RNCCRW
10HP RAS-100RNCCLW RAS-100RNCCRW
12HP RAS-120RNCCLW RAS-120RNCCRW
14HP RAS-140RNCCLW RAS-140RNCCRW
16HP RAS-160RNCCLW RAS-160RNCCRW
18HP RAS-180RNCCLW RAS-180RNCCRW
20HP RAS-200RNCCLW RAS-200RNCCRW
22HP RAS-220RNCCLW RAS-220RNCCRW
24HP RAS-240RNCCLW RAS-240RNCCRW
26HP RAS-260RNCCLW RAS-260RNCCRW
28HP RAS-280RNCCLW RAS-280RNCCRW
Unit Nomenclature
RAS - 080 R N C C L W
WProduction Location: Wuhu, China
L/R
B/C
C
C: SET FREE “C” Series (Standard Type)
NRefrigerant Type: R410A
H/R H: Heat Pump System (2 Pipes System)
080 System Capacity (e.g., 080 = 8 HP, H12 =112 HP)
RAS Unit Type
RAS: Outdoor Unit
L: 3N~ 380-415 V 50 Hz / 4 Wires
3N~ 380 V 60 Hz / 4 Wires
Nomenclature Description
3
rd
Generation
B: SET FREE “B” Series (High Eiciency Type)
R: Heat Recovery System (3 Pipes System)
R: 3~ 220 V 60 Hz / 3 Wires
Working Range
This air conditioner has been designed for a specific
temperature range. For optimum performance and a long life,
operate this unit within the range limits listed in the table.
Intermittent Range
Pull Down Operation Range
Continuous Operation Range
Outdoor Air Inlet Temperature (°C DB)
Indoor Air Inlet
Temperature (°C WB)
-10
-5
5
15
20
25
30
35
40
45
48
50
52
55
15 20 2523
Pull Down Operation Range
Continuous Operation Range
Outdoor Air Inlet Temperature (°C DB)
Indoor Air Inlet
Temperature (°C WB)
-10
-5
5
15
20
25
30
35
40
45
48
50
52
55
15 20 2523
Intermittent
Range
Start Up Operation Range
Continuous Operation Range
Outdoor Air Inlet Temperature (°C DB)
Indoor Air Inlet
Temperature (°C WB)
-20
-15
-10
-5
0
5
10
15
16
20
-25 15 20 302510 27
Standard Type High Eiciency Type
High Eiciency Type
< Cooling Operation > < Heating Operation >
Standard Type
Temperature
DB: Dry Bulb, WB: Wet Bulb
Cooling
Operation
Heating
Operation
Cooling and Heating
Operation
Cooling Heating
Indoor
Air Inlet
Temperature
15 to 23°C
WB
15 to 27 °C
DB
15 to 23°C
WB
15 to 27 °C
DB
Outdoor
Air Inlet
Temperature
High Eiciency Type
-5 (-10*2) to 25 °C DB
-6 (-11*2) to 16 °C WB
-5 (-10*2) to
52 °C DB
-15 (-25) to
16 °C WB
Standard Type
-5 (-10*2) to
48 (52 *1) °C
DB
-15 (-25) to
16 °C WB
*1. The maximum operating temperature for cooling operation of the high
eiciency type is 52 °C and the standard type is 48 °C (52 °C) .
The temperatures in parenthesis indicate the temporary maximum
operating temperatures.
*2. There are connection requirements when setting cooling operation at a
low outdoor temperature (on-site setting), please keep them in mind when
designing.
• Attach a snow protection hood (optional part).
• The minimum indoor unit connection capacity is 2.8HP.
• Setting on site is required. See the Technical Catalog for setting
instructions.
• Temporary high ambient operation is allowed depending
on the installation condition.
• Do not install the unit where the ambient temperature is
always high.
• If an air outlet duct is attached and set in high static
mode, or an optional hood such as a snow protection
hood is attached, the outdoor unit operational
temperature should not exceed 48 °C.
• When the outdoor air inlet temperature is more than
52 °C during cooling operation, “intermittent operation”
may be activated to prevent the unit from overloading.
If the outdoor unit operates for a long time at a
temperature higher than 52 °C protection control may be
activated.

IMPORTANT NOTICE
A16381E84N-rev.1 iii
• If installing units in a place where the ambient
temperature continuously exceeds 48 °C, the combination
ratio must be lower than 130%.
• The cooling capacity deteriorates at a high ambient
temperature. Select a larger capacity outdoor unit
than an outdoor unit which capacity is larger than the
compatible building heat load.
• When the ambient temperature is more than 48 °C during
cooling operation, the noise level to increase from 5dBA
to 7dBA, due to an increase in fan rotation speed.
NOTES:
• The appropriate amount (100%) of refrigerant must be
charged. Excessive charging of refrigerant is forbidden.
• Units should not be installed in areas where they will
be aected by direct sunlight or where a short circuit of
the discharged air may occur. Installing the units in an
inappropriate place may active the protection control and
the alarm system. The life span of the products and part
may be considerably shortened.
• Periodic maintenance (1/certain month) must be applied
to the heat exchanger fin to avoid adhesion of dirt and
clogging of sand to the outdoor unit heat exchanger.
• When the cooling load is low and the outdoor air inlet
temperature is 10 °C DB or lower, “thermo-OFF” may be
activated to prevent frost formation on the indoor unit
heat exchanger. Depending on the operating condition, the
outlet air temperature of the indoor unit may be excessively
low. Pay attention to the direction of the outlet air. Do not
place objects near the air outlet and under the indoor unit
as they may be damaged by condensates that may form if
the humidity or the latent heat load is continuously high.
• When the heating load is low and the outdoor air inlet
temperature is high (higher than 15 °C DB), thermo-OFF
may be activated. The outdoor unit operation will stop
when then outdoor inlet air temperature exceeds
26 °C DB.
• The operational range diers when connected to All Fresh
Air Unit, Econofresh and other special indoor units. Refer to
the Technical Catalog for more details.
IMPORTANT NOTICE
• Hitachi-Johnson Controls Air Conditioning pursues
a policy of continuing improvement in design and
performance in its products. As such, Hitachi-Johnson
Controls Air Conditioning reserves the right to make
changes at any time without prior notice.
• Hitachi-Johnson Controls Air Conditioning cannot
anticipate every possible circumstance that might involve
a potential hazard.
• This manual provides common descriptions, basic and
advanced information to maintain and service this air
conditioner which you operate as well for other models.
• The installer and system specialist must safeguard
against refrigerant leakage in accordance with local
codes. The following standards may be applicable,
if local regulations are not available. International
Organization for Standardization: (ISO 5149 or European
Standard, EN 378). No part of this manual may be
reproduced in any way without the expressed written
consent of Hitachi-Johnson Controls Air Conditioning.
• This air conditioner is designed for standard air
conditioning applications only. Do NOT use this unit
for anything other than the purposes for which it was
intended.
• The unit is a partial unit air conditioner, complying with
partial unit requirements of the International Standard,
and must only be connected to other units that have
been confirmed as complying with corresponding
partial unit requirements of the International Standard.
• This manual is essential for product operation and
should remain with the air conditioning equipment.
• If you have questions, please contact your distributor or
contractor.
Introduction
This manual focuses on the outdoor/indoor unit. Read
this manual carefully before installation. Also, refer to
other manuals where necessary.
Forward this manual and the warranty to the next team
of installers and then users. Ask them to keep this manual
with the air conditioner for future reference.
(Refrigerant Piping Work) → (Electrical Wiring Work) → (Ref.
Charge Work) → (Test Run) → (User)
• With regard to the installation (including the
mechanical installation, refrigerant system installation
and electrical wiring connection), please read the
following pages carefully.
○Installation Work ...Chapter 4
○Refrigerant Piping Work...Chapter5
○Electrical Wiring... Chapter 6
• For wiring between the indoor unit and the outdoor
unit, refer to the Installation and Maintenance Manual
for the outdoor unit.
• For the optional decorative panel, refer to the
Installation and Maintenance Manual for the optional
decorative panel. (Only for 1-Way, 2-Way, and 4-Way
Cassette Types)
• For each optional controller, refer to the Installation
and Maintenance Manual and the Operation Manual.
• For each optional part, refer to the Installation and
Maintenance Manual.
• For the central controller, refer to the Installation and
Maintenance Manual and the Operation Manual.

IMPORTANT NOTICE
iv A16381E84N-rev.1
Product Inspection upon
Arrival
1. Upon receiving this product, inspect it for any
damages incurred in transit. Claims for damage, either
apparent or concealed, should be filed immediately
with the shipping company.
2. Check the model number, electrical characteristics
(power supply, voltage, and frequency rating), and
accessories to determine if they are correct with the
purchase order.
3. Please contact your local agent or contractor if
any issues involving installation, performance, or
maintenance arise. Liability does not cover defects
originating from unauthorized modifications
performed by a customer without the written consent
of Hitachi-Johnson Controls Air Conditioning.
Performing any mechanical alterations on this product
without the consent of the manufacturer will render
your warranty null and void.

TABLE OF CONTENTS
A16381E84N-rev.1 v
TABLE OF CONTENTS
Models................................................................................................................................................................................................................................ii
IMPORTANT NOTICE .........................................................................................................................................................................................................iii
1. Safety Summary ..........................................................................................................................................................................................................1
2. Before Installation.......................................................................................................................................................................................................7
2.1 About This Product.............................................................................................................................................................................................7
2.2 Line-Up of Outdoor Units...................................................................................................................................................................................9
2.3 Combination of Indoor Unit and Outdoor Unit...............................................................................................................................................12
2.4 CH-Box (Optional) for Heat Recovery System .................................................................................................................................................14
2.5 Piping Connection Kit (Optional) between Outdoor Units .............................................................................................................................14
2.6 Multi-Kit (Optional) between Indoor Unit and Outdoor Unit .........................................................................................................................15
2.7 Factory-Supplied Accessories ..........................................................................................................................................................................16
3. Selection of Installation Location
...................................................................................................................................................................................... 19
3.1 Installation Location.........................................................................................................................................................................................19
3.2 Service Space and Installation Area.................................................................................................................................................................19
4. Installation Work .......................................................................................................................................................................................................22
4.1 Transportation and Handling...........................................................................................................................................................................22
4.1.1 Transportation.......................................................................................................................................................................................22
4.1.2 Handling of Outdoor Unit .....................................................................................................................................................................23
4.2 Outdoor Unit Installation .................................................................................................................................................................................25
4.2.1 Foundation ............................................................................................................................................................................................25
4.2.2 Drain Water Treatment..........................................................................................................................................................................26
5. Refrigerant Piping Work ............................................................................................................................................................................................27
5.1 Piping Materials ................................................................................................................................................................................................28
5.2 Flaring and Joint...............................................................................................................................................................................................31
5.3 Caution about Outdoor Unit Installation ........................................................................................................................................................32
5.4 Piping Connection Work ..................................................................................................................................................................................33
5.4.1 Removing of Closing Pipes ...................................................................................................................................................................33
5.4.2 Piping Connection Method ...................................................................................................................................................................35
5.4.3 Piping Connection.................................................................................................................................................................................37
5.5 Piping Work between Outdoor Units...............................................................................................................................................................45
5.5.1 Piping Size between Outdoor Units (Base Unit) ..................................................................................................................................49
5.5.2 Piping Size between Outdoor Units (2 Unit Combination)..................................................................................................................51
5.5.3 Piping Size between Outdoor Units (3 Unit Combination)..................................................................................................................57
5.5.4 Piping Size between Outdoor Units (4 Unit Combination)..................................................................................................................62
5.6 Piping Size, Piping Connection and Multi-Kit Selection (Heat Pump) ...........................................................................................................66
5.6.1 Connection between Outdoor Units and Connection Kit....................................................................................................................66
5.6.2 Connection between Outdoor Units, Multi-Kits and Indoor Units......................................................................................................68
5.7 Piping Branch Restrictions (Heat Pump).........................................................................................................................................................69
5.8 Restrictions on Height Dierence between Indoor Units (Heat Pump)..........................................................................................................70
5.9 Piping Size, Piping Connection and Multi-Kit Selection (Heat Recovery)......................................................................................................71
5.9.1 Connection between Outdoor Units and Connection Kit....................................................................................................................72
5.9.2 Connection between Outdoor Units, Multi-Kits and Indoor Units......................................................................................................75
5.10 Restrictions on Height Dierence (Heat Recovery) .........................................................................................................................................77
5.11 Piping Branch Restrictions (Heat Recovery)....................................................................................................................................................78
6. Electrical Wiring.........................................................................................................................................................................................................80
6.1 General Check...................................................................................................................................................................................................80
6.2 Electrical Wiring for Outdoor Unit....................................................................................................................................................................81
6.3 Electrical Wiring Connection............................................................................................................................................................................82
6.4 Electrical Wiring Connection of Indoor Unit and Outdoor Unit......................................................................................................................89
6.5 DIP Switch Setting for Outdoor Unit................................................................................................................................................................93
7. Air-Tight Test and Additional Refrigerant Charge ....................................................................................................................................................97
7.1 Air-Tight Test.....................................................................................................................................................................................................97
7.2 Vacuuming ........................................................................................................................................................................................................99
7.3 Additional Refrigerant Charge Calculation....................................................................................................................................................100
7.4 Charging Work ................................................................................................................................................................................................102
8. Test Run ...................................................................................................................................................................................................................104
8.1 Before Test Run...............................................................................................................................................................................................104
8.2 Test Run...........................................................................................................................................................................................................105
9. Safety and Control Device Setting.......................................................................................................................................................................... 110

1. Safety Summary
1A16381E84N-rev.1
1. Safety Summary
:DANGER indicates a hazardous situation
which, if not avoided, will result in death
or serious injury.
:
WARNING indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.
:
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which,
if not avoided, could result in minor or
moderate injury.
:NOTICE is used to address practices not
related to personal injury.
:
NOTE is useful information for operation
and/or maintenance.
DANGER
WARNING
CAUTION
NOTICE
NOTE
General Precautions
WARNING
To reduce the risk of serious injury or death, read these
instructions thoroughly and follow all warnings or
cautions included in all manuals that accompany the
product. Incorrect installation could cause leaks, electric
shock, fire or explosion.
• Hitachi-Johnson Controls Air Conditioning will not
assume any liability for injuries or damage caused
by not following steps outlined or described in this
manual. Unauthorized modifications to Hitachi-
Johnson Controls Air Conditioning products are
prohibited as they:
○May create hazards that could result in death, seri-
ous injury or equipment damage;
○Will void product warranties;
○May invalidate product regulatory certifications.
• This system should be installed by personnel certified
by Hitachi-Johnson Controls Air Conditioning.
Professional personnel must follow all local and
national codes.
Where Seismic Performance requirements are
specified, take appropriate measures during
installation to guard against possible damage or injury
that might occur in an earthquake due to incorrect
installation or a unit falling.
• This air conditioning system is intended to be used by
expert or trained users in shops, in light industry and
on farms, or for commercial use by lay persons.
• Use appropriate Personal Protective Equipment
(PPE), such as gloves and protective goggles and,
where appropriate, have a gas mask nearby. Also use
electrical protection equipment and tools suited for
electrical operation purposes. Keep a quenching cloth
and a fire extinguisher nearby during brazing. Use care
in handling, rigging, and setting bulky equipment.
• Before servicing, turn o the power supply and use
accepted lockout and tag out procedures at all main
switches. Failure to do so can result in damage to
internal components with severe or fatal electrical
shock.
• This unit is a pressurized system. Never loosen
threaded joints while the system is under pressure and
never open pressurized system parts.
• When the air conditioner needs repair or is
transported to a new location, contact your distributor
or contractor. If the repair and the installation are not
completed, electric shock or fire can result.
• When transporting, be careful when picking up,
moving and mounting these units. Although the unit
may be packed using plastic straps, do NOT use them
for transporting the unit from one location to another.
Do NOT stand on or put any material on the unit. Get a
partner to help, and bend with your knees when liing
to reduce strain on your back. Sharp edges or thin
aluminum fins on the air conditioner can cut fingers,
so wear protective gloves.
• Use only recommended/standardized replacement
parts provided by Hitachi-Johnson Controls Air
Conditioning.
• This air conditioning system 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
air conditioning system 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 attempt to "clean" indoor unit components
with liquid or powdered cleaning agents during
maintenance. Electric shock, sparks, flame, and
serious or fatal injury can occur.
• When the flat panel is opened (closed) or the air filter
is attached (removed), hold them firmly. If not, it may
cause falling or injury. (only for wall mounted type)
• Do NOT insert fingers or objects into air inlet/outlet.
Injury can result from rotating fan blades or energized
electrical components.
• Do NOT touch the main circuit board or electronic
components in the controller or remote devices. Make
sure that dust and/or moisture does not accumulate
on the circuit board.
• Do NOT touch the wired controller with wet hands to
prevent damage to the wired controller or an electrical
shock.
• If you smell anything burning, shut down the unit and
turn o the power at the main power supply. Contact
the fire department and your installer or electrical
contractor.
• Do not apply hair spray, insecticides, lacquers, or
other pressurized substances within 1 m of any air
conditioner. The substances can react with energized
electrical contractor.
• For safe operation, the air conditioning system shall
be inspected and maintained every 6 months.

1. Safety Summary
A16381E84N-rev.1 2
CAUTION
To reduce the risk of minor or moderate injury, the
following general precautions must be followed.
• About Wireless Controller
○Pay attention to the following to use the batteries
correctly. If not, it may cause liquid spill or burst.
• Never use new and used batteries together.
• Never use the dierent types of batteries (for
example manganese battery and alkaline
battery) together.
• When the wireless controller is not used over
a prolonged period of time (more than 2 or 3
months), remove the batteries from the wireless
controller.
○Aer removing the old batteries, wait five
or more seconds before inserting the new
ones.
NOTICE
Take the following precautions to reduce the risk of
property damage.
• Each model number and all matching model numbers
within a system must have the same version of
soware.
Follow these steps to verify that your product model
numbers have the same version of soware.
○Access the main printed circuit board in each prod-
uct.
○Locate a white sticker with a P-XXXX number or
○Connect a service checker and locate the ROM
number.
• In a hospital or facility, install the unit at least 3 m
away from medical or electronic devices. Operation
of the unit may adversely aect the devices. The
devices generate electromagnetic interference (EMI)
waves that can directly radiate into the unit and cause
malfunction.
• If there is a source of electrical interference near the
power source, install noise suppression equipment
(filter).
• If the wired controller is installed in a location where
electromagnetic radiation is generated, make sure
that the wired controller is shielded and cables are
sleeved inside conduit tubing.
• Be careful that moisture, dust, or variant refrigerant
compounds not enter the refrigerant cycle during
installation work. Foreign matter could damage
internal components or cause blockages.
• If air filters are required on this unit, do NOT operate
the unit without the air filter set in place. If the air filter
is not installed, dust may accumulate and breakdown
may result.
• Do NOT install the unit in a location where animals
and plants can come in direct contact with the outlet
air and become adversely aected.
• Be sure the condensate hose discharges water
properly. If connected incorrectly, leaks can occur.
• Do NOT install the unit with any downward slope to
the side of the condensate pipe. If you do, you may
have drain water flowing back which may cause leaks.
• Do NOT install the unit in any place where oil can
seep into the units, such as a kitchen in restaurants,
and so forth. For these locations or social venues,
use specialized units with oil-resistant features built
into them. In addition, use a specialized ceiling fan
designed for restaurant use. These specialized oil-
resistant units can be ordered for such applications.
However, in places where large quantities of oil can
splash onto the unit, such as a factory, even the
specialized units cannot be used. These products
should not be installed in such locations.
• Do NOT install this unit in any place where silicon
gases can coalesce. If the silicon gas comes into
contact with the surface of the heat exchanger, the
finned surfaces repel water. As a result, moisture can
enter from the condensate pan into the electrical box,
possibly causing electrical failures.
• Do not place any flammable items or anything that
can cause a fire on or around the outdoor unit. It may
cause a fire.
• During the test run, check the unit’s operation
temperature. If the unit is used in an environment
where the temperature exceeds the operation
boundary, it may cause severe damage. Check the
Working Range in the manual.
• The A-weighted emission sound pressure level does
not exceed 70 dB (A).
Installation Precautions
WARNING
To reduce the risk of serious injury or death, the following
installation precautions must be followed.
• When installing the unit into:
○A wall: Make sure the wall is strong enough to hold
the unit’s weight. It may be necessary to construct
a strong wood or metal frame to provide added
support.
○A room: Properly insulate any refrigerant piping
run inside a room to prevent "condensation" that
can cause dripping and water damage to wall and
floors.
○Damp or uneven areas: Use a raised concrete pad
or concrete blocks to provide a solid, level foun-
dation for the unit to prevent water damage and
abnormal vibration.
○An area with high winds: Securely anchor the
outdoor unit down with bolts and a metal frame.
Provide a suitable air bale.
○A snowy area: Install the outdoor unit on a raised
platform that is higher than the average snow lev-
el. Provide the snow protection hoods.

1. Safety Summary
3A16381E84N-rev.1
• Do NOT install the unit in the following places. Doing
so can result in an explosion, fire, deformation,
corrosion, or product failure.
○Explosive or flammable atmosphere
○Where a fire, oil, steam or powder can directly
enter the unit, such as nearby or above a kitchen
stove.
○Where oil (including machinery oil) may be pres-
ent.
○Where corrosive gases such as chlorine, bromine,
or sulfide can accumulate, such as near a hot tub
or a hot spring.
○Where dense, salt-laden airflow is heavy, such as in
coastal regions.
○Where the air quality is of high acidity.
○Where harmful gases can be generated from de-
composition.
• Do NOT position the condensate pipe for the indoor
unit near any sanitary sewers where corrosive gases
may be present. If you do, toxic gases can seep into
breathable air spaces and can cause respiratory
injuries. If the condensate pipe is installed incorrectly,
water leakage and damage to the ceiling, floor,
furniture, or other possessions may result. If the
condensate pipe becomes clogged, water may drip
from the indoor unit. Do NOT install the indoor unit
where such dripping can cause moisture damage or at
uneven locations.
• During transportation, do NOT allow the backrest of
the forkli make contact with the unit, otherwise, it
may cause damage to the heat exchanger and also
may cause injury when stopped or started suddenly.
• Before performing any brazing work, be sure that
there are no flammable materials or open flames
nearby.
• Remove gas inside the closing pipe when the brazing
work is performed. If the brazing filler metal is melted
with remaining gas inside, the pipes will be blown o
and it may cause injury.
• Be sure to use nitrogen gas for the airtight test. If
other gases such as oxygen gas, acetylene gas or
fluorocarbon gas are accidentally used, it may cause
an explosion or gas intoxication.
• Perform a test run to ensure normal operation. Safety
guards, shields, barriers, covers, and protective
devices must be in place while the compressor/unit
is operating. During the test run, keep fingers and
clothing away from any moving parts.
• Do NOT install the indoor unit anywhere discharge
airflow can pass directly toward nearby heating
equipment (space heaters). It may interfere with the
combustion process in these units.
• When the indoor unit is operating with heating
equipment, ventilate the room suiciently. Any leaked
refrigerant gas that happens to come into contact with
any heat source can become toxic on contact and can
cause suocation in the immediate area.
• Do NOT install this system in close proximity to septic
sewer lines where flammable and toxic gases can
coalesce.
CAUTION
To reduce the risk of minor or moderate injury, the
following installation precautions must be followed.
• Proper handling of this unit requires two people. Safe
handling and installation of the indoor unit requires
the strength of two people. Mounting the unit alone
may cause injury due to a fall of the unit. Although the
unit may be girded with plastic bands, do NOT use it
for transportation. Avoid contact with finned surfaces
of the heat exchanger as sharp edges can cause severe
injury to hands and fingers. Use appropriate work
gloves for the job.
NOTICE
Take the following precautions to reduce the risk of
property damage.
• The optional decorative panel can become deformed
if the positioning of the indoor unit's suspension
brackets is not stable or level. Condensation can
accumulate in low spots as a result due to escaping air
through any resulting gaps between the indoor unit
and the decorative panel.
• Check to ensure that the condensate hose discharges
moisture properly. If connected incorrectly, it can
result in leakage and cause damage to furniture.
• Make sure to use the factory-supplied condensate hose
and hose clamp. Non-factory supplied condensate
hose and hose clamp can cause water leakage.
• Do NOT bend or twist the factory-supplied condensate
hose. This could compromise the seal and result in
water leakage.
• Do NOT apply excessive force to the condensate
pipe connection. This can also compromise the seal
properties of the connection.
• Verify that the installed unit is level with floor and
ceiling surfaces. Any variance or inclination can
cause moisture to back up into the condensate pan,
overflow, and seepage onto ceiling or wall surfaces,
and cause damage to carpeted surfaces or furniture
below.
• Air circulation should be optimized to achieve the
best distribution pattern and not settled into isolated
pockets that can make people uncomfortable.
• Inspect the condensate pan before the onset of winter
to drain away all accumulated water in the pan.
• The heat exchanger of indoor unit overheats whenever
there is a slight amount of refrigerant circulating
during slowdown or stoppage. As a result, water in
the condensate pan evaporates and can condense on
ceiling or wall surfaces.
• Aer the drain check is completed, insert the rubber
plug again and seal the gap with a silicon sealant.
• Clean up the site when finished, remembering to
check that no metal scraps or bits of wiring have been
le inside the unit being installed.

1. Safety Summary
A16381E84N-rev.1 4
• Do NOT install the decorative panel with motion
sensor and radiation sensor or motion sensor kit in the
following places. It may cause failure or deterioration
of the sensor.
○Ambient temperature changes drastically.
○Where excessive force or vibration is applied to the
sensor.
○Where static electricity or electromagnetic waves
may generate.
○Where interference of infrared light such as glasses
or mist are in the detecting area.
○Where the lens for sensor is exposed to high tem-
perature and humidity for a long time.
○Where fluid and corrosive gas exist.
○Where direct lights such as sunlight or headlights
aect the sensor.
○Where hot air from a heater, etc. aects directly to
the sensor.
○Where the air flow returns to the sensor by hitting
obstacles such as a shelf, locker, etc.
○Where the blower devices such as ceiling fan, ven-
tilating fan, etc. aect the air flow from the indoor
unit.
○Where weather aects directly the surface of the
sensor.
○Where the lens surface may smudge or be dam-
aged such as a dusty environment.
Detecting function will decrease if the lens for sen-
sor smudges.
In this case, wipe o smudges using a cotton swab
soaked with alcohol (Isopropyl alcohol is recom-
mended.) or a so cloth. (When wiping o smudg-
es on the lens for sensor, do NOT apply excessive
force. If excessive force is applied, the resin lens
may be damaged and this may cause malfunctions
such as misdetection or undetectable motion.)
• When using the remote control thermo function,
consider the following points when selecting the
installation location.
○Where the average temperature of the room can be
detected
○Where there is no direct sunlight
○Where there is no heat source nearby
○Where hot/cold air from the outdoors, or a dra
from elsewhere (such as air vents, diusers or
grilles) can aect air circulation.
• When installing the wired controller in the following
locations with poor temperature distribution, install
remote sensors.
○Where the unit is exposed to direct sunshine or
direct light.
○Where the unit is in close proximity to a heat
source.
○Where hot/cold air from the outdoors, or a dra
from elsewhere (such as air vents, diusers or
grilles) can aect air circulation.
○In areas with poor air circulation and ventilation.
• When a wireless controller is used, locate at a distance
of at least 3 m between the indoor unit and electric
lighting. If not, the receiver part of the unit may have
diiculty receiving operation commands.
Refrigerant Precautions
WARNING
To reduce the risk of serious injury or death, the following
refrigerant precautions must be followed.
• As originally manufactured, this unit contains
refrigerant charged by Hitachi-Johnson Controls
Air Conditioning. Hitachi-Johnson Controls Air
Conditioning uses only refrigerants that have been
approved for use in the unit’s intended home country
or market. Hitachi-Johnson Controls Air Conditioning
distributors similarly are only authorized to provide
refrigerants that have been approved for use in the
countries or markets they serve. The refrigerant used
in this unit is identified on the unit’s faceplate and/or
in the associated manuals. Any additions of refrigerant
into this unit must comply with the country’s
requirements with regard to refrigerant use and
should be obtained from Hitachi-Johnson Controls Air
Conditioning distributors. Use of any non-approved
refrigerant substitutes will void the warranty and will
increase the potential risk of injury or death.
• To avoid the possibility of dierent refrigerant or
refrigerant oil being introduced into the cycle, the
sizes of the charging connections have been changed
from R407C type and R22 type. It is necessary to
prepare the following tools listed in "Necessary Tools
and Instruments List for Installation" in the Installation
and Maintenance Manual before performing the
installation work. Use refrigerant pipes and joints
which are approved for use with R410A.
• The refrigerant R410A is adopted. The refrigerant
oil tends to be aected by foreign matters such as
moisture, oxide film, (or fat). Perform the installation
work with care to prevent moisture, dust, or dierent
refrigerant from entering the refrigerant cycle. Foreign
matter can be introduced into the cycle from such
parts as expansion valve and the operation may be
unavailable.
• The outdoor unit shall only be connected to indoor
units suitable for the same refrigerant (R410A).
• The design pressure for this product is 4.15 MPa.
The pressure of the refrigerant R410A is 1.4 times
higher than that of the refrigerant R22. Therefore, the
refrigerant piping for R410A must be thicker than that
for R22. Make sure to use the specified refrigerant
piping. If not, the refrigerant piping may rupture due
to an excessive refrigerant pressure. Besides, pay
attention to the piping thickness when using copper
refrigerant piping. The thickness of copper refrigerant
piping diers depending on its material.
• The maximum operating pressure is 4.15 MPa. This
maximum operating pressure shall be considered
when connecting the outdoor unit to correlated indoor
units.

1. Safety Summary
5A16381E84N-rev.1
• When installing the unit, and connecting refrigerant
piping, keep all piping runs as short as possible,
and make sure to securely connect the refrigerant
piping before the compressor starts operating. If
the refrigerant piping is not connected and the
compressor activates with the stop valve opened, the
refrigerant cycle will become subjected to extremely
high pressure, which can cause an explosion or fire.
• If installed in a small room, take measures to prevent
the refrigerant from exceeding the maximum
allowable concentration in the event that refrigerant
gases should escape. The installation should meet the
requirements in each regional regulation. If refrigerant
gas leaks during the installation work, ventilate the
room immediately.
• The refrigerant system may be damaged if the slope of
the piping connection kit exceeds +15˚.
• Tighten the flare nut with a torque wrench in the
specified manner. Do NOT apply excessive force to the
flare nut when tightening. If you do, the flare nut can
crack and refrigerant leakage may occur.
• When maintaining, relocating, and disposing of
the unit, dismantle the refrigerant piping aer the
compressor stops.
• When pipes are removed from under the piping cover,
aer the insulation work is completed, cover the gap
between the piping cover and pipes using a packing
material (field-supplied). If the gap is not covered,
the unit may be damaged if snow, rain water or small
animals enter the unit.
• Do NOT apply excessive force to the spindle valve
at the end of opening. Otherwise, the spindle valve
flies out due to refrigerant pressure. At the test run,
fully open the gas and liquid valves. Otherwise,
these devices will be damaged. (It is closed before
shipment.)
• Before installation is complete, make sure that the
refrigerant leak test has been performed. If refrigerant
gases escape into the air, turn o the main switch,
extinguish any open flames and contact your service
contractor. Refrigerant (Fluorocarbon) for this unit
is odorless. If the refrigerant should leak and come
into contact with open flames, toxic gas could be
generated. Also, because the fluorocarbons are
heavier than air, they settle to the floor, which could
cause asphyxiation.
• If refrigerant gas should leak, turn o all heating
equipment and ventilate the room immediately.
Mop down or vacuum floor areas of residual toxic
particulate.
• This product contains fluorinated greenhouse gases
that its functioning relies upon. Do NOT vent into the
atmosphere.
Refrigerant type: R410A
For mass of charged refrigerant, refer to chapter 7.
GWP*1: 2090
*1. GWP=global warming potential
Electrical Precautions
WARNING
To reduce the risk of serious injury or death, the following
electrical precautions must be followed.
• This air conditioning system shall be installed in
accordance with national wiring regulations.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections
and inadequate grounding can cause serious injury or
death.
• Means for disconnection from the supply mains, which
have a contact separation in all poles that provide
full disconnection under over voltage category III
conditions, must be incorporated in the fixed wiring in
accordance with the wiring rules.
• Be sure to use the dedicated circuit and perform all
electrical work in strict accordance with this manual
and all relevant regulatory standards.
• This air conditioning system is not intended for use by
persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision or instruction concerning use of the air
conditioning system by a person responsible for their
safety.
○Supervise children to ensure they do not play with
the unit.
○If the power supply wiring is damaged, it must be
replaced by the manufacturer, its service agent
or similarly qualified persons in order to avoid a
hazard.
• Do NOT open the service cover or access panel to
indoor or outdoor units without turning o the main
power supply. Before servicing, open and tag all
disconnect switches. Never assume electrical power is
disconnected. Check with a multimeter.
• Turn o all power at the main power source before
performing maintenance work. Failure to do so can
result in damage to internal components with severe
or fatal electrical shock.
• Do NOT operate indoor units with the electrical box
and switch panel open and exposed. Incidental
contact with energized components can prove fatal.
• Insulate all electrical components and connections
from exposure to moisture. Failure to do so can result
in an electrical short circuit and fire.
• Do NOT tamper with or attempt to "repair" electrical
wiring or connections. Call your installer or electrical
contractor. Serious or fatal injury can occur.
• Only use electrical protection equipment and tools
suited for this installation.
• The Main Fuse shall be replaced by the professional
person.
• Use an exclusive power supply for the air conditioner
at the unit’s rated voltage.
• Use the specified cables between units.

1. Safety Summary
A16381E84N-rev.1 6
• Be sure to install circuit breakers such as an earth
leakage circuit breaker (ELB)/ground fault interrupter
(GFCI), isolating switch, molded case circuit breaker
and so on), with the specified capacity. Ensure
that the wiring terminals are tightened securely
to recommended torque specifications. If a circuit
breaker or fuse is frequently activated, shut down the
system and contact your service contractor.
• Shut down at the main power supply if the ELB (GFCI)
activates frequently. Contact your distributor or
contractor immediately. Failure to act accordingly can
result in serious injury and damage to the unit.
• Clamp electrical wires securely with a cable band
aer all wiring is connected to the terminal block. In
addition, run wires securely through the wiring access
channel or the electrical conduit.
• When installing the power lines, do NOT apply tension
to the cables. Secure the suspended cables at regular
intervals, but not too tightly.
• Make sure that the terminals do NOT come into
contact with the surface of electrical box. If the
terminals are too close to the surface, it may lead to
failures at the terminal connection.
• Aer stopping operation, be sure to wait at least five
minutes before turning o the main power switch.
Otherwise, water leakage or electrical breakdown
may result. Disconnect the power supply completely
before attempting any maintenance for electrical
parts. Confirm that no residual voltage is present aer
disconnecting the power supply.
• Residual voltage can cause electric shock. At all times,
check for residual voltage aer disconnecting from the
power source before starting work on the unit.
• The installation of a residual current device (RCD)
having a rated residual operating current not
exceeding 30 mA is advisable.
• Do NOT clean with, or pour water onto the controller
as it could cause an electric shock and/or damage the
unit. Do NOT use strong detergent such as a solvent.
Clean with a so cloth.
• Check that the earth (ground) wiring is securely
connected. Do NOT connect ground wiring to gas
piping, water piping, lightning conductor, or telephone
ground wiring.
• Do NOT run the relay wiring for the motion sensor
and power supply wiring in parallel. Electromagnetic
Interference (EMI) may cause malfunction of the
sensor. (Only for indoor unit with motion sensor)
• The polarity of the input terminals is important, so be
sure to match the polarity when using contacts that
have polarity.
• Before installing the controller or remote devices,
ensure the indoor and outdoor unit operation has
been stopped. Further, be sure to wait at least five
minutes before turning o the main power switch to
the indoor or outdoor units. Otherwise, water leakage
or electrical breakdown may result.
• Do NOT install the wired controller in the high-
temperature and humidity location.
• When connecting the controller cabling to the units,
do NOT touch or adjust any safety devices inside
the indoor or outdoor units. All safety features,
disengagement, and interlocks must be in place and
functioning correctly before the equipment is put into
operation. If these devices are improperly adjusted
or tampered with in any way, a serious accident can
occur. Never bypass any safety device or switch.
NOTICE
Take the following precautions to reduce the risk of
property damage.
• Use an exclusive power supply with the rated voltage
for the controller that requires an external power
supply.
• Communication cable must be shielded twist pair
cable (0.75 mm2).
Shielded cable must be considered for applications
and routing in areas of high EMI and other sources of
potentially excessive electrical noise to reduce the
potential for communication errors. When shielded
cable is applied, proper bonding and termination of
the cable shield is required as per Hitachi-Johnson
Controls Air Conditioning guidelines. Plenum and riser
ratings for communication cables must be considered
per application and local code requirements.
• The air conditioner may not function normally in the
following instances:
○If electrical power for the air conditioner is sup-
plied from the same transformer as a device*1
referred to below.
○If the power source cables for this device*1 and the
air conditioner are located in close proximity to
each other.
*1. A device can include a li, container crane, rectifier for
electric railway, inverter power device, arc furnace, electric
furnace, large-sized induction motor and large-sized switch.
Regarding the cases mentioned above, surge voltage
may be inducted into the power supply cables for
the air conditioner due to a rapid change in power
consumption of the device and an activation of a
switch.
Check field regulations and standards before
performing electrical work in order to protect the
power supply for the air conditioner.
• Turn o and disconnect the unit from the power
source when handling the service connector. Do NOT
open the service cover or access panel to the indoor
or outdoor units without turning o the main power
supply.

2. Before Installation
7A16381E84N-rev.1
2. Before Installation
2.1 About This Product
HITACHI proudly introduces the New SET FREE "air365" series, the highly-eicient and reliable air-conditioning system.
Recently, increased numbers of buildings are requiring "Intelligent" facilities - communication networks, oice automation,
and a comfortable environment. Particularly, comfortable space is required all the day through the year in oice buildings.
This multi-split system air conditioner, SET FREE "air365" series can meet these requirements. The proven combination of the
scroll compressor and the inverter provides the best air conditioning for small/medium oice buildings.
• SYSTEM FREE System
HITACHI has developed the SYSTEM FREE system with its customers always in mind.
This system, which is unique in the world, allows the interconnection of the same indoor units for all the HITACHI systems.
This system provides the end user with greater flexibility for installation, which means that the air-conditioning systems will
integrate better with the whole of the installations that make up the building.
• Wide Product Range of Outdoor Units
Space, structure and necessary functions, in line with evolution in building design, the requirements for air conditioning have
also diversified.
• About Refrigerant
WARNING
• The design pressure for this product is 4.15 MPa. The pressure of the refrigerant R410A is 1.4 times higher
than that of the refrigerant R22. Therefore, the refrigerant piping for R410A must be thicker than that for R22.
Make sure to use the specified refrigerant piping. If not, the refrigerant piping may rupture due to an excessive
refrigerant pressure. Besides, pay attention to the piping thickness when using copper refrigerant piping. The
thickness of copper refrigerant piping diers depending on its material.
NOTICE
• The refrigerant R410A is adopted. The refrigerant oil tends to be aected by foreign matters such as moisture, oxide
film, (or fat). Perform the installation work with care to prevent moisture, dust, or dierent refrigerant from entering the
refrigerant cycle. Foreign matter can be introduced into the cycle from such parts as expansion valve and the operation
may be unavailable.
• To prevent the dierent refrigerant or refrigerant oil from being mixed into the cycle, the sizes of the charging
connections have been changed from R407C type and R22 type.
It is necessary to prepare the following tools before performing the installation work.
• Use refrigerant pipes and joints which can be used for R410A.
• Necessary Tools and Instruments List for Installation
No. Tool No. Tool No. Tool
1 Handsaw 8 Plier 16 Cutter for Wires
2 Phillips Screwdriver 9 Pipe Cutter 17 Gas Leak Detector
3 Vacuum Pump 10 Brazing Kit 18 Leveller
4 Refrigerant Gas Hose 11 Hexagon Wrench 19 Clamper for Solderless Terminals
5 Megohmmeter 12 Spanner 20 Hoist (for Indoor Unit)
6 Copper Pipe Bender 13 Weigher 21 Ammeter
7Manual Water Pump
(for Indoor Unit)
14 Charging Cylinder 22 Voltage Meter
15 Gauge Manifold 23 Wrench
Use tools and measuring instruments only for the new refrigerant R410A as they come into direct contact with the refrigerant.

2. Before Installation
A16381E84N-rev.1 8
G: Interchangeability is available with current R22 l: Only for Refrigerant R410A (No Interchangeability with R22)
5: Prohibited F: Only for Refrigerant R407C (No Interchangeability with R22)
Measuring Instrument and Tool
Interchangeability
with R22 Reason of Non-Interchangeability and Attention
(ʘ: Strictly Required) Use
R410A R407C
Refrigerant
Pipe
Pipe Cutter
Chamfering
Reamer
G G
-
Cutting Pipe
Removing Burrs
Flaring Tool
G l G •
The flaring tools for R407C are applicable to R22.
•
If using flaring tube, make dimension of tube
larger for R410A.
•
In case of material 1/2H, flaring is not available.
Flaring for Tubes
Extrusion
Adjustment Gauge
l
-
Dimensional Control
for Extruded Portion
of Tube aer Flaring
Pipe Bender
G G •
In case of material 1/2H, bending is not available.
Use elbow for bend and braze.
Bending
Expanding Tool
G G •
In case of material 1/2H, expanding of tube is not
available. Use socket for connecting tube.
Expanding Tubes
Torque Wrench
l G •
For ɸ12.7, φ15.88, spanner size is increased by
2mm.
Connection of
Flare Nut
G G •
For φ6.35, φ9.52, φ19.05, spanner size is the
same.
Brazing Tool
G G •
Perform correct brazing work. Brazing for Tubes
Nitrogen Gas
G G •
Strict Control against Contamination
(Blow nitrogen during brazing.)
Prevention from
Oxidation during
Brazing
Lubrication Oil
(for Flare Surface)
l F •
Use a synthetic oil which is equivalent to the oil
used in the refrigeration cycle.
•
Synthetic oil absorbs moisture quickly.
Applying Oil to
the Flared Surface
Vacuum
Drying/
Refrigerant
Charge
Refrigerant
Cylinder
l F •
Check refrigerant cylinder color.
ʘLiquid refrigerant charging is required regarding
zeotoropic refrigerant.
Refrigerant Charging
Vacuum Pump
G G
ʘThe current ones are applicable. However, it is
required to mount a vacuum pump adapter which
can prevent reverse oil flow when a vacuum pump
stops.
Vacuum Pumping
Adapter for
Vacuum Pump
l *1
F
Manifold Valve
l F
•
No interchangeability is available due to higher
pressures when compared with R22.
ʘDo not use current ones to the dierent
refrigerant.
If used, mineral oil will flow into the cycle and
cause sludges, resulting in clogging or compressor
failure.
Connection diameter is dierent; R410A: UNF1/2,
R407C: UNF7/16.
Vacuum Pumping,
Vacuum Holding,
Refrigerant Charging
and Check of
Pressures
Charging Hose
l F
Charging Cylinder
5 5 •
Use the weight scale. -
Weight Scale
G G
-
Measuring
Instrument for
Refrigerant Charging
Refrigerant Gas
Leakage Detector
l *1
F•
The current gas leakage detector (R22) is not
applicable due to dierent detecting method.
Gas Leakage Check
*1. Interchangeability with R407C.

2. Before Installation
9A16381E84N-rev.1
2.2 Line-Up of Outdoor Units
Universal (Standard Type): For ANZ
1. This outdoor unit series “RNCCLW” can build the capacity of 8 to 64 HP by combining the outdoor units of 8 to 24 HP.
2. The combinations not indicated in the table below are unavailable.
<Base Unit>
HP 8 10 12 14 16 18
Model RAS-080RNCCLW RAS-100RNCCLW RAS-120RNCCLW RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW
HP 20 22 24
Model RAS-200RNCCLW RAS-220RNCCLW RAS-240RNCCLW
<Combination of Base Units>
HP 26 28 30 32 34 36
Model RAS-260RNCCLW RAS-280RNCCLW RAS-300RNCCLW RAS-320RNCCLW RAS-340RNCCLW RAS-360RNCCLW
Combination RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW
RAS-120RNCCLW RAS-120RNCCLW RAS-120RNCCLW RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW
HP 38 40 42 44 46 48
Model RAS-380RNCCLW RAS-400RNCCLW RAS-420RNCCLW RAS-440RNCCLW RAS-460RNCCLW RAS-480RNCCLW
Combination RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW
RAS-160RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW
HP 50 52 54 56 58 60
Model RAS-500RNCCLW RAS-520RNCCLW RAS-540RNCCLW RAS-560RNCCLW RAS-580RNCCLW RAS-600RNCCLW
Combination
RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW
RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW
RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW RAS-160RNCCLW RAS-180RNCCLW RAS-180RNCCLW
HP 62 64
Model RAS-620RNCCLW RAS-640RNCCLW
Combination
RAS-220RNCCLW RAS-240RNCCLW
RAS-220RNCCLW RAS-220RNCCLW
RAS-180RNCCLW RAS-180RNCCLW
Universal (High Eiciency Type): For ANZ
1. This outdoor unit series “RNCBLW” can build the capacity of 8 to 48 HP by combining the outdoor units of 8 to 20 HP.
2. The combinations not indicated in the table below are unavailable.
<Base Unit>
HP 8 10 12 14 16 18
Model RAS-080RNCBLW RAS-100RNCBLW RAS-120RNCBLW RAS-140RNCBLW RAS-160RNCBLW RAS-180RNCBLW
HP 20
Model RAS-200RNCBLW
<Combination of Base Units>
HP 22 24 26 28 30 32
Model RAS-220RNCBLW RAS-240RNCBLW RAS-260RNCBLW RAS-280RNCBLW RAS-300RNCBLW RAS-320RNCBLW
Combination RAS-120RNCBLW RAS-120RNCBLW RAS-140RNCBLW RAS-140RNCBLW RAS-160RNCBLW RAS-160RNCBLW
RAS-100RNCBLW RAS-120RNCBLW RAS-120RNCBLW RAS-140RNCBLW RAS-140RNCBLW RAS-160RNCBLW
HP 34 36 38 40 42 44
Model RAS-340RNCBLW RAS-360RNCBLW RAS-380RNCBLW RAS-400RNCBLW RAS-420RNCBLW RAS-440RNCBLW
Combination
RAS-180RNCBLW RAS-180RNCBLW RAS-200RNCBLW RAS-200RNCBLW RAS-140RNCBLW RAS-160RNCBLW
RAS-160RNCBLW RAS-180RNCBLW RAS-180RNCBLW RAS-200RNCBLW RAS-140RNCBLW RAS-140RNCBLW
- - - - RAS-140RNCBLW RAS-140RNCBLW
HP 46 48
Model RAS-460RNCBLW RAS-480RNCBLW
Combination
RAS-160RNCBLW RAS-160RNCBLW
RAS-160RNCBLW RAS-160RNCBLW
RAS-140RNCBLW RAS-160RNCBLW

2. Before Installation
A16381E84N-rev.1 10
Universal (Standard Type) (380 - 415 V): For LA
1. This outdoor unit series “RNCCLW” can build the capacity of 8 to 112 HP by combining the outdoor units of 8 to 28 HP.
2. The combinations not indicated in the table below are unavailable.
<Base Unit>
HP 8 10 12 14 16 18
Model RAS-080RNCCLW RAS-100RNCCLW RAS-120RNCCLW RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW
HP 20 22 24 26 28
Model RAS-200RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-260RNCCLW RAS-280RNCCLW
<Combination of Base Units>
HP 30 32 34 36 38 40
Model RAS-300RNCCLW RAS-320RNCCLW RAS-340RNCCLW RAS-360RNCCLW RAS-380RNCCLW RAS-400RNCCLW
Combination RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW
RAS-120RNCCLW RAS-140RNCCLW RAS-160RNCCLW RAS-180RNCCLW RAS-160RNCCLW RAS-180RNCCLW
HP 42 44 46 48 50 52
Model RAS-420RNCCLW RAS-440RNCCLW RAS-460RNCCLW RAS-480RNCCLW RAS-500RNCCLW RAS-520RNCCLW
Combination RAS-240RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW RAS-260RNCCLW
RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW
HP 54 56 58 60 62 64
Model RAS-540RNCCLW RAS-560RNCCLW RAS-580RNCCLW RAS-600RNCCLW RAS-620RNCCLW RAS-640RNCCLW
Combination
RAS-280RNCCLW RAS-280RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-220RNCCLW RAS-240RNCCLW
RAS-260RNCCLW RAS-280RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW
- - RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW RAS-180RNCCLW
HP 66 68 70 72 74 76
Model RAS-660RNCCLW RAS-680RNCCLW RAS-700RNCCLW RAS-720RNCCLW RAS-740RNCCLW RAS-760RNCCLW
Combination
RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW RAS-260RNCCLW
RAS-240RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW
RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW
HP 78 80 82 84 86 88
Model RAS-780RNCCLW RAS-800RNCCLW RAS-820RNCCLW RAS-840RNCCLW RAS-860RNCCLW RAS-880RNCCLW
Combination
RAS-260RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-240RNCCLW RAS-240RNCCLW
RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-220RNCCLW RAS-240RNCCLW
RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW RAS-220RNCCLW RAS-220RNCCLW
- - - - RAS-180RNCCLW RAS-180RNCCLW
HP 90 92 94 96 98 100
Model RAS-900RNCCLW RAS-920RNCCLW RAS-940RNCCLW RAS-960RNCCLW RAS-980RNCCLW RAS-H00RNCCLW
Combination
RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW RAS-260RNCCLW
RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-260RNCCLW
RAS-240RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW
RAS-180RNCCLW RAS-220RNCCLW RAS-220RNCCLW RAS-240RNCCLW RAS-240RNCCLW RAS-240RNCCLW
HP 102 104 106 108 110 112
Model RAS-H02RNCCLW RAS-H04RNCCLW RAS-H06RNCCLW RAS-H08RNCCLW RAS-H10RNCCLW RAS-H12RNCCLW
Combination
RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-280RNCCLW
RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW RAS-280RNCCLW RAS-280RNCCLW
RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW RAS-280RNCCLW
RAS-240RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-260RNCCLW RAS-280RNCCLW

2. Before Installation
11 A16381E84N-rev.1
Universal (Standard Type) (220 V): For LA
1. This outdoor unit series “RNCCRW” can build the capacity of 8 to 112 HP by combining the outdoor units of 8 to 28 HP.
2. The combinations not indicated in the table below are unavailable.
<Base Unit>
HP 8 10 12 14 16 18
Model RAS-080RNCCRW RAS-100RNCCRW RAS-120RNCCRW RAS-140RNCCRW RAS-160RNCCRW RAS-180RNCCRW
HP 20 22 24 26 28
Model RAS-200RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-260RNCCRW RAS-280RNCCRW
<Combination of Base Units>
HP 30 32 34 36 38 40
Model RAS-300RNCCRW RAS-320RNCCRW RAS-340RNCCRW RAS-360RNCCRW RAS-380RNCCRW RAS-400RNCCRW
Combination RAS-180RNCCRW RAS-180RNCCRW RAS-180RNCCRW RAS-180RNCCRW RAS-220RNCCRW RAS-220RNCCRW
RAS-120RNCCRW RAS-140RNCCRW RAS-160RNCCRW RAS-180RNCCRW RAS-160RNCCRW RAS-180RNCCRW
HP 42 44 46 48 50 52
Model RAS-420RNCCRW RAS-440RNCCRW RAS-460RNCCRW RAS-480RNCCRW RAS-500RNCCRW RAS-520RNCCRW
Combination RAS-240RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW RAS-260RNCCRW
RAS-180RNCCRW RAS-220RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW
HP 54 56 58 60 62 64
Model RAS-540RNCCRW RAS-560RNCCRW RAS-580RNCCRW RAS-600RNCCRW RAS-620RNCCRW RAS-640RNCCRW
Combination
RAS-280RNCCRW RAS-280RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-220RNCCRW RAS-240RNCCRW
RAS-260RNCCRW RAS-280RNCCRW RAS-180RNCCRW RAS-180RNCCRW RAS-220RNCCRW RAS-220RNCCRW
- - RAS-180RNCCRW RAS-180RNCCRW RAS-180RNCCRW RAS-180RNCCRW
HP 66 68 70 72 74 76
Model RAS-660RNCCRW RAS-680RNCCRW RAS-700RNCCRW RAS-720RNCCRW RAS-740RNCCRW RAS-760RNCCRW
Combination
RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW RAS-260RNCCRW
RAS-240RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW
RAS-180RNCCRW RAS-220RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW
HP 78 80 82 84 86 88
Model RAS-780RNCCRW RAS-800RNCCRW RAS-820RNCCRW RAS-840RNCCRW RAS-860RNCCRW RAS-880RNCCRW
Combination
RAS-260RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-240RNCCRW RAS-240RNCCRW
RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-220RNCCRW RAS-240RNCCRW
RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW RAS-220RNCCRW RAS-220RNCCRW
- - - - RAS-180RNCCRW RAS-180RNCCRW
HP 90 92 94 96 98 100
Model RAS-900RNCCRW RAS-920RNCCRW RAS-940RNCCRW RAS-960RNCCRW RAS-980RNCCRW RAS-H00RNCCRW
Combination
RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW RAS-260RNCCRW
RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-260RNCCRW
RAS-240RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW
RAS-180RNCCRW RAS-220RNCCRW RAS-220RNCCRW RAS-240RNCCRW RAS-240RNCCRW RAS-240RNCCRW
HP 102 104 106 108 110 112
Model RAS-H02RNCCRW RAS-H04RNCCRW RAS-H06RNCCRW RAS-H08RNCCRW RAS-H10RNCCRW RAS-H12RNCCRW
Combination
RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-280RNCCRW
RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW RAS-280RNCCRW RAS-280RNCCRW
RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW RAS-280RNCCRW
RAS-240RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-260RNCCRW RAS-280RNCCRW

2. Before Installation
A16381E84N-rev.1 12
2.3 Combination of Indoor Unit and Outdoor Unit
The following indoor units can be combined with the HITACHI SET FREE "air365" series outdoor unit.
Table 2.1 Indoor Unit Type List
Indoor Unit Type Nominal Capacity
0.4 0.6 0.7 0.8 0.9 1 1.1 1.3 1.5 1.6 1.8 2 2.3 2.5 3 3.3 3.6 4 4.5 5 6 8 10 12 16 20
1-Way Cassette ○ ○ ○ ○ ○ ○
2-Way Cassette ○ ○ ○ ○ ○ ○ ○ ○ ○
4(R)-Way Cassette ○ ○ ○ ○ ○ ○ ○ ○
AC Compact Ducted ○ ○ ○ ○ ○ ○ ○ ○
AC Low Static Ducted ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
AC M/H Static Ducted ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ {○} {○}
AC Slim/Mini Ducted ○ ○ ○ ○
All Fresh Air ○ ○ ○ ○ ○ ○
Convertible {○} {○}
DC Low Static Ducted ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
DC M/H Static Ducted ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
DX-AHU kit ○ ○ ○ ○ ○
Floor Celling ○ ○ ○ ○ ○ ○ ○ ○ ○
Floor Concealed ○ ○ ○ ○
Floor Exposed ○ ○ ○ ○
Mini 4-Way Cassette ○ ○ ○ ○ ○ ○
Total Heat Exchanger ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Wall Mounted ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○: Available, { }: India only
NOTE:
• The number of indoor units connectable to SET FREE "air365" series outdoor unit is listed in Tables 2.2 and 2.3 System
Combination.
Comply with the following conditions when installing the unit.
Table 2.2 System Combination - RNCCLW, RNCCRW (For LA)
Outdoor Unit Min. Capacity at
Individual Operation
Max. Number of
Connectable IDU
Recommended
Number of
Connectable IDU
Range of
Combination
Capacity
Total Length between
Each IDU and
Expansion Valve Kit(*)
RAS-080RNCC(L/R)W
0.6HP
(1.6kW)
20 8
50 to 200%
40m
RAS-100RNCC(L/R)W 25 10
RAS-120RNCC(L/R)W 30 60m
RAS-140RNCC(L/R)W 36
16
70m
RAS-160RNCC(L/R)W 40 80m
RAS-180RNCC(L/R)W 45
RAS-200RNCC(L/R)W 50 18
120mRAS-220RNCC(L/R)W 55 20
RAS-240RNCC(L/R)W 60 26
RAS-260RNCC(L/R)W
64
150mRAS-280RNCC(L/R)W
32
RAS-300RNCC(L/R)W
RAS-320RNCC(L/R)W
180mRAS-340RNCC(L/R)W
RAS-360RNCC(L/R)W
RAS-380RNCC(L/R)W
to
RAS-540RNCC(L/R)W
38 200mRAS-560RNCC(L/R)W 50 to 180%
RAS-580RNCC(L/R)W
to
RAS-H12RNCC(L/R)W
50 to 150%
Refer to NOTES on page 13.

2. Before Installation
13 A16381E84N-rev.1
Table 2.3 System Combination - RNCCLW, RNCBLW (For ANZ)
Outdoor Unit Min. Capacity at
Individual Operation
Max. Number of
Connectable IDU
Recommended
Number of
Connectable IDU
Range of
Combination
Capacity
Total Length between
Each IDU and
Expansion Valve Kit(*)
RAS-080RNC(B/C)LW
0.6HP
(1.6kW)
20 8
50 to 200%
40m
RAS-100RNC(B/C)LW 25 10
RAS-120RNC(B/C)LW 30 60m
RAS-140RNC(B/C)LW 36
16
70m
RAS-160RNC(B/C)LW 40 80m
RAS-180RNC(B/C)LW 45
RAS-200RNC(B/C)LW 50 18
120mRAS-220RNC(B/C)LW 55 20
RAS-240RNC(B/C)LW 60 26
RAS-260RNC(B/C)LW
64
150mRAS-280RNC(B/C)LW
32
RAS-300RNC(B/C)LW
RAS-320RNC(B/C)LW
180mRAS-340RNC(B/C)LW
RAS-360RNC(B/C)LW
RAS-380RNC(B/C)LW
to
RAS-460RNC(B/C)LW
38 200m
RAS-480RNCCLW
to
RAS-540RNCCLW
RAS-560RNCCLW
to
RAS-640RNCCLW
50 to 150%
NOTES:
• The connectable indoor unit capacity ratio can be calculated as follows.
Connectable Indoor Unit Capacity Ratio = Total Indoor Unit Capacity / Total Outdoor Unit Capacity
• For the system under which all the indoor units are supposed to operate simultaneously, the total indoor unit capacity
should be less than outdoor unit capacity. Otherwise, it may cause a decrease of operating performance and operating
limit in overload operation.
• For the system under which all the indoor units are not supposed to operate simultaneously, the total indoor unit capacity
is available up to 130%, 150%, 180% or 200% depending on the indoor unit type and capacity.
• Maximum number of connectable indoor units diers depending on the model, capacity, environment and installation
place of connected indoor units. Refer to the Technical Catalog for the selection.
• When operating the outdoor unit in cold areas with temperatures of -10°C, or under the high heating load conditions, it is
recommended that the total indoor unit capacity is less than 100% against the outdoor unit capacity and the total piping
length is less than 300m.
• The air flow volume for indoor units of 0.6 to 1.3HP is set higher than that for indoor units of 1.5HP or more. Make sure to
select appropriate indoor units when installing indoor units where cold dra may occur during heating operation.
If installing indoor units in such places, refer to the recommended number of connectable indoor units.
• Total Length between Each I.U. and Expansion Valve Kit (*): This is the summation of the piping length between each wall
mounted type without expansion valve and expansion valve kit in the refrigerant system.
The load capacity per hour or the possibility of all indoor units simultaneous operation is unknown at the design stage, the
total capacity of combined indoor units should be not over 100% against the outdoor unit capacity.

2. Before Installation
A16381E84N-rev.1 14
2.4 CH-Box (Optional) for Heat Recovery System
• Single
Applicable System
SSX: for Heat Recovery System
(3 Pipes)
Maximum Connecatble
Indoor Unit Capacity (HP)
160: 6.0HP
280: 6.1HP to 10.0HP
Refrigerant Type
AP: R410A
Unit Type
CH: Cooling/Heating Changeover Box
CH - AP 160 SSX
Model Branch Connectable Indoor Unit
Total Capacity
Number of
Connectable Indoor
Unit *1
CH-AP160SSX 1 6.0HP or less (Max. 16kW) 1 to 7
CH-AP280SSX 1 6.1HP to 10.0HP (Max. 28kW) 1 to 8
*1. When multiple indoor units are connected to the same CH-Box, they are controlled
with the same operation mode.
• Multiple
Applicable System
SSX: for Heat Recovery System
(3 Pipes)
Multiple
Branch
04: 4 Branch
08: 8 Branch
12: 12 Branch
16: 16 Branch
Refrigerant Type
AP: R410A
Unit Type
CH: Cooling/Heating Changeover Box
CH - AP 16 MSSX
Model Branch Connectable Indoor Unit
Total Capacity
Number of
Connectable Indoor
Unit *2
CH-AP04MSSX 4 16HP or less (Max. 44.8kW) 1 to 6
CH-AP08MSSX 8 30HP or less (Max. 85kW) 1 to 6
CH-AP12MSSX 12 30HP or less (Max. 85kW) 1 to 6
CH-AP16MSSX 16 30HP or less (Max. 85kW) 1 to 6
*2. The indoor units connected to the same branch of the CH-Box are controlled with
the same operation mode.
2.5 Piping Connection Kit (Optional) between Outdoor Units
Type of Generation
Applicable System
SA, TA: for Heat Pump System
(2 Pipes)
SX, TX: for Heat Recovery System
(3 Pipes)
Corresponding Outdoor Units
Capacity
Refrigerant Type
NP: R410A
Unit Type
MC: Multi Connection Kit for
Outdoor Units
MC - NP 21 SA 1
Item
Applicable Outdoor Unit
Model Remarks
Heat Pump
No. of
ODU
For LA For ANZ
Standard
Type
Standard
Type
High
Eiciency
Type
Piping
Connec.
Kit
30 - 48 26 - 48 22 - 40 2 MC-NP21SA1 for Gas: 1
for Liquid: 1
50 - 56 - - 2 MC-NP22TA
- - 42 - 48 3 MC-NP30SA1 for Gas: 1
for Liquid: 1
58 - 84 50 - 64 - 3 MC-NP31TA
86 - 112 - - 4 MC-NP40TA for Gas: 1
for Liquid: 1
Item
Applicable Outdoor Unit
Model Remarks
Heat Recover
No. of
ODU
For LA For ANZ
Standard
Type
Standard
Type
High
Eiciency
Type
Piping
Connec.
Kit
30 - 48 26 - 48 22 - 40 2 MC-NP21SX1 for Low Press. Gas: 1
for High Press. Gas: 1
for Liquid: 1
50 - 56 - - 2 MC-NP22TX
- - 42 - 48 3 MC-NP30SX1 for Low Press. Gas: 1
for High Press. Gas: 1
for Liquid: 1
58 - 84 50 - 64 - 3 MC-NP31TX
86 - 112 - - 4 MC-NP40TX
for Low Press. Gas: 1
for High Press. Gas: 1
for Liquid: 1

2. Before Installation
15 A16381E84N-rev.1
2.6 Multi-Kit (Optional) between Indoor Unit and Outdoor Unit
Type of Generation
Applicable System
A: for Heat Pump System
(2 Pipes)
X: for Heat Recovery System
(3 Pipes)
No. of Branches
Corresponding Outdoor Unit and
Indoor Unit Capacity
Refrigerant Type
NP: R410A
Unit Type
MW: Line Branch Multi-Kit
MH: Header Branch Multi-Kit
MW - NP 282 A 3
• Heat Pump (2 Pipes)
1. Line Branch
First Branch
Outdoor Unit HP Model
8, 10 MW-NP282A3
12 - 16 MW-NP452A3
18 - 24 MW-NP692A3
26 - 54 MW-NP902A3
56 - 88 MW-NP2682A3
Outdoor Unit HP Model
8, 10 MW-NP282A3
12 - 16 MW-NP452A3
18 - 24 MW-NP692A3
26 - 54 MW-NP902A3
56 - 112 MW-NP2682A3
(Standard Type) (High Eiciency Type)
2. Multi-Kit aer First Branch
Total Indoor Unit
HP Model
<12 MW-NP282A3
12 - 17.99 MW-NP452A3
18 - 25.99 MW-NP692A3
26 - 55.99 MW-NP902A3
≥56 MW-NP2682A3
(Standard Type) (High Eiciency Type)
3. Header Branch
(Standard Type) (High Eiciency Type)
Total Indoor Unit HP No. of Header
Branches Model
Max. 8 4 MH-NP224A
Max. 10 8 MH-NP288A
• Heat Recovery (3 Pipes)
1. Line Branch
First Branch
Outdoor Unit HP Model
8, 10 MW-NP282X3
12 - 16 MW-NP452X3
18, 20 MW-NP562X3
22, 24 MW-NP692A3
26 - 54 MW-NP902A3
56 - 112 MW-NP2682X3
2. Multi-Kit aer First Branch
Total Indoor Unit
HP Model
< 5.99 MW-NP142X3
6 to 11.99 MW-NP282X3
12 - 17.99 MW-NP452X3
18 - 21.99 MW-NP562X3
22 to 25.99 MW-NP692X3
26 - 55.99 MW-NP902X3
≥ 56 MW-NP2682X3
3. Header Branch
Total Indoor Unit HP No. of Header
Branches Model
Max. 10 8 MH-NP288X