Hitachi air365 Max Series Instruction Manual

–
INSTALLATION
& MAINTENANCE
MANUAL
–
INVERTER-DRIVEN
AIR CONDITIONERS
SET FREE Max SERIES
OUTDOOR UNITS
MODELS
<BASE UNITS>
COOLING ONLY
(Standard Type)
RAS-080CNCCLW TO RAS-300CNCCLW
EN INSTALLATION & MAINTENANCE MANUAL
A1638IN3TL
Original Instructions Scan the code to get the electronic manual.

Models
i
Models
Applicable Models
HP Cooling Only HP Cooling Only
8HP RAS-080CNCCLW 20HP RAS-200CNCCLW
10HP RAS-100CNCCLW 22HP RAS-220CNCCLW
12HP RAS-120CNCCLW 24HP RAS-240CNCCLW
14HP RAS-140CNCCLW 26HP RAS-260CNCCLW
16HP RAS-160CNCCLW 28HP RAS-280CNCCLW
18HP RAS-180CNCCLW 30HP RAS-300CNCCLW
Unit Nomenclature
RAS - 080 C N C C L W
W
Production Location:
Wuhu, China
L
C
C
C: SET FREE “C” Series
NRefrigerant Type: R410A
CC: Cooling Only System
(2 Pipes System)
080 System Capacity
(e.g., 080 = 8 HP, H20 =120 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
(Standard Type)
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
0
10
15
20
25
30
35
40
45
48
50
52
55
15 20 2523
< Cooling Operation >
Temperature DB: Dry Bulb
WB: Wet Bulb
Cooling
Operation
Indoor
Air Inlet
Temperature
15 to 23°C WB
Outdoor
Air Inlet
Temperature
10 to
48 (52
*1
) °C DB
*1. The maximum operating temperature for
cooling operation of the Cooling Only type is
48 °C (52 °C).
The temperatures in parenthesis indicate the
temporary maximum operating temperatures.
• 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 48 °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.
• 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 affected 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

IMPORTANT NOTICE
ii
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.
• The operational range differs 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...Chapter 5
○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.
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.

iii
TABLE OF CONTENTS
Models.............................................................................................................................................. i
IMPORTANT NOTICE ....................................................................................................................... ii
1. Safety Summary ......................................................................................................................... 1
2. Before Installation ...................................................................................................................... 8
2.1 About This Product ................................................................................................................ 8
2.2 Line-Up of Outdoor Units..................................................................................................... 10
2.3 Combination of Indoor Unit and Outdoor Unit .................................................................. 12
2.4 Piping Connection Kit (Optional) between Outdoor Units................................................. 13
2.5 Multi-Kit (Optional) between Indoor Unit and Outdoor Unit............................................. 14
2.6 Factory-Supplied Accessories.............................................................................................. 14
3. Selection of Installation Location ............................................................................................ 16
3.1 Installation Location ............................................................................................................ 16
3.2 Service Space and Installation Area .................................................................................... 16
4. Installation Work....................................................................................................................... 19
4.1 Transportation and Handling .............................................................................................. 19
4.2 Outdoor Unit Installation .................................................................................................... 21
5. Refrigerant Piping Work ........................................................................................................... 24
5.1 Piping Materials.................................................................................................................... 24
5.2 Flaring and Joint ................................................................................................................. 26
5.3 Caution about Outdoor Unit Installation............................................................................ 27
5.4 Piping Connection Work ...................................................................................................... 28
5.5 Piping Work between Outdoor Units .........................................................................................................34
5.6 Piping Size, Piping Connection and Multi-Kit Selection..................................................... 42
5.7 Piping Branch Restrictions................................................................................................... 45
5.8 Restrictions on Height Difference between Indoor Units................................................... 46
6. Electrical Wiring........................................................................................................................ 47
6.1 General Check ...................................................................................................................... 47
6.2 Electrical Wiring for Outdoor Unit .................................................................................................. 48
6.3 Electrical Wiring Connection ............................................................................................... 49
6.4 Electrical Wiring Connection of Indoor Unit and Outdoor Unit ......................................... 52
6.5 PSW and DIP Switch Setting for Outdoor Unit.................................................................... 54
7. Air-Tight Test and Additional Refrigerant Charge.................................................................... 58
7.1 Air-Tight Test......................................................................................................................... 58
7.2 Vacuuming............................................................................................................................ 59
7.3 Additional Refrigerant Charge Calculation ......................................................................... 60
7.4 Charging Work...................................................................................................................... 61
8. Test Run..................................................................................................................................... 63
8.1 Before Test Run .................................................................................................................... 63
8.2 Test Run ................................................................................................................................ 64
9. Safety and Control Device Setting ........................................................................................... 70

1. Safety Summary
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
Is 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
NOTE
Indicates useful information
for operation and/or
maintenance.
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, serious 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 off 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 lifting 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

1. Safety Summary
2
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 off 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.
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
ve 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 software.
Follow these steps to verify that your product
model numbers have the same version of
software.
○Access the main printed circuit board in
each product.
○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 affect 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
affected.
• 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,

1. Safety Summary
3
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 foundation 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 baffle.
• 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
present.
○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
decomposition.
• 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 forklift 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 off 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 sufficiently. Any
leaked refrigerant gas that happens to come
into contact with any heat source can become

1. Safety Summary
4
toxic on contact and can cause suffocation 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.
• After 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 left inside the unit being installed.
• 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
temperature and humidity for a long time.
○Where fluid and corrosive gas exist.
○Where direct lights such as sunlight or
headlights affect the sensor.
○Where hot air from a heater, etc. affects
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, ventilating fan, etc. affect the air flow
from the indoor unit.
○Where weather affects directly the surface
of the sensor.
○Where the lens surface may smudge or be
damaged such as a dusty environment.
Detecting function will decrease if the lens
for sensor smudges.
In this case, wipe off smudges using a
cotton swab soaked with alcohol (Isopropyl
alcohol is recommended.) or a soft cloth.
(When wiping off smudges 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

1. Safety Summary
5
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 draft from elsewhere (such as air vents,
diffusers or grilles) can affect 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 draft from elsewhere (such as air vents,
diffusers or grilles) can affect 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 difficulty 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 different 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 affected by foreign
matters such as moisture, oxide film, (or fat).
Perform the installation work with care to
prevent moisture, dust, or different 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 differs 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.
• 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

1. Safety Summary
6
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 after
the compressor stops.
• When pipes are removed from under the piping
cover, after 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 off
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 off 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 refrigerant 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 off
the main power supply. Before servicing, open
and tag all disconnect switches. Never assume
electrical power is disconnected. Check with a
multimeter.
• Turn off 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.

1. Safety Summary
7
• 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.
• 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 after 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.
• After stopping operation, be sure to wait at
least five minutes before turning off 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 after
disconnecting the power supply.
• Residual voltage can cause electric shock.
At all times, check for residual voltage after
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 soft
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 off 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

2. Before Installation
8
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
supplied 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 lift, 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 off 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 off the main power supply.
2. Before Installation
2.1 About This Product
Hitachi proudly introduces the New SET FREE
"air365 Max" series, the highly-efficient and
reliable air-conditioning system. Recently,
increased numbers of buildings are requiring
"Intelligent" facilities - communication networks,
office automation, and a comfortable environment.
Particularly, comfortable space is required all the
day through the year in office buildings.
This multi-split system air conditioner, SET FREE
"air365 Max" series can meet these requirements.
The proven combination of the scroll compressor
and the inverter provides the best air conditioning
for small/medium office 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 differs depending on
its material.
NOTICE
• The refrigerant R410A is adopted. The
refrigerant oil tends to be affected by
foreign matters such as moisture, oxide
film, (or fat). Perform the installation work
with care to prevent moisture, dust, or
different 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 different 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.

2. Before Installation
9
• 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.
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 aring tools for R407C are applicable to
R22.
•
If using aring tube, make dimension of tube
larger for R410A.
•
In case of material 1/2H, aring 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

2. Before Installation
10
Measuring Instrument and Tool
Interchangeability
with R22 Reason of Non-Interchangeability and Attention
(ʘ: Strictly Required) Use
R410A R407C
Vacuum
Drying/
Refrigerant
Charge
Refrigerant
Cylinder
l F •
Check refrigerant cylinder color.
ʘ Liquid refrigerant charging is required
regarding zeotropic refrigerant.
Refrigerant Charging
Vacuum Pump
G G
ʘ The current ones are applicable. However,
it is required to mount a vacuum pump
adapter which can prevent reverse oil ow
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.
ʘ Do not use current ones to the dierent
refrigerant.
If used, mineral oil will ow 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.
2.2 Line-Up of Outdoor Units
Standard Type: CNCCLW
1. This outdoor unit series “CNCCLW” can build the capacity of 8 to 120 HP by combining the outdoor units
of 8 to 30 HP.
2. The combinations not indicated in the table below are unavailable.
<Base Unit>
HP 8 10 12 14 16 18
Model RAS-080CNCCLW RAS-100CNCCLW RAS-120CNCCLW RAS-140CNCCLW RAS-160CNCCLW RAS-180CNCCLW
HP 20 22 24 26 28 30
Model RAS-200CNCCLW RAS-220CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-280CNCCLW RAS-300CNCCLW
<Combination of Base Units>
HP 32 34 36 38 40 42
Model RAS-320CNCCLW RAS-340CNCCLW RAS-360CNCCLW RAS-380CNCCLW RAS-400CNCCLW RAS-420CNCCLW
Combination RAS-180CNCCLW RAS-180CNCCLW RAS-180CNCCLW RAS-220CNCCLW RAS-220CNCCLW RAS-240CNCCLW
RAS-140CNCCLW RAS-160CNCCLW RAS-180CNCCLW RAS-160CNCCLW RAS-180CNCCLW RAS-180CNCCLW
HP 44 46 48 50 52 54
Model RAS-440CNCCLW RAS-460CNCCLW RAS-480CNCCLW RAS-500CNCCLW RAS-520CNCCLW RAS-540CNCCLW
Combination RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-280CNCCLW
RAS-220CNCCLW RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW

2. Before Installation
11
HP 56 58 60 62 64 66
Model RAS-560CNCCLW RAS-580CNCCLW RAS-600CNCCLW RAS-620CNCCLW RAS-640CNCCLW RAS-660CNCCLW
Combination
RAS-280CNCCLW RAS-300CNCCLW RAS-300CNCCLW RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW
RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW RAS-220CNCCLW RAS-220CNCCLW RAS-240CNCCLW
- - - RAS-180CNCCLW RAS-180CNCCLW RAS-180CNCCLW
HP 68 70 72 74 76 78
Model RAS-680CNCCLW RAS-700CNCCLW RAS-720CNCCLW RAS-740CNCCLW RAS-760CNCCLW RAS-780CNCCLW
Combination
RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-260CNCCLW
RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW
RAS-220CNCCLW RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW
HP 80 82 84 86 88 90
Model RAS-800CNCCLW RAS-820CNCCLW RAS-840CNCCLW RAS-860CNCCLW RAS-880CNCCLW RAS-900CNCCLW
Combination
RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW RAS-300CNCCLW RAS-300CNCCLW
RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW RAS-300CNCCLW
RAS-260CNCCLW RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW
HP 92 94 96 98 100 102
Model RAS-920CNCCLW RAS-940CNCCLW RAS-960CNCCLW RAS-980CNCCLW RAS-H00CNCCLW RAS-H02CNCCLW
Combination
RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-260CNCCLW
RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW RAS-260CNCCLW
RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-260CNCCLW
RAS-220CNCCLW RAS-220CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW RAS-240CNCCLW
HP 104 106 108 110 112 114
Model RAS-H04CNCCLW RAS-H06CNCCLW RAS-H08CNCCLW RAS-H10CNCCLW RAS-H12CNCCLW RAS-H14CNCCLW
Combination
RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW
RAS-260CNCCLW RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW
RAS-260CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW RAS-280CNCCLW
RAS-260CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-260CNCCLW RAS-280CNCCLW RAS-280CNCCLW
HP 116 118 120
Model RAS-H16CNCCLW RAS-H18CNCCLW RAS-H20CNCCLW
Combination
RAS-300CNCCLW RAS-300CNCCLW RAS-300CNCCLW
RAS-300CNCCLW RAS-300CNCCLW RAS-300CNCCLW
RAS-280CNCCLW RAS-300CNCCLW RAS-300CNCCLW
RAS-280CNCCLW RAS-280CNCCLW RAS-300CNCCLW

2. Before Installation
12
2.3 Combination of Indoor Unit and Outdoor Unit
The following indoor units can be combined with the HITACHI SET FREE "air365 Max" 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 Max" series outdoor unit is listed in Tables 2.2
System Combination. Comply with the following conditions when installing the unit.
Table 2.2 System Combination - CNCCLW
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-080CNCCLW
0.6HP
(1.6kW)
20 8
50 to 200%
40m
RAS-100CNCCLW 25 10
RAS-120CNCCLW 30 60m
RAS-140CNCCLW 36
16
70m
RAS-160CNCCLW 40 80m
RAS-180CNCCLW 45
RAS-200CNCCLW 50 18
120mRAS-220CNCCLW 55 20
RAS-240CNCCLW 60 26
RAS-260CNCCLW
64
150mRAS-280CNCCLW
32
RAS-300CNCCLW
RAS-320CNCCLW
180mRAS-340CNCCLW
RAS-360CNCCLW
RAS-380CNCCLW
to
RAS-540CNCCLW
38 200mRAS-560CNCCLW 50 to 180%
RAS-580CNCCLW
to
RAS-H20CNCCLW
50 to 150%
Refer to NOTES on page 13.

2. Before Installation
13
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 differs depending on the model, capacity, environment
and installation place of connected indoor units. Refer to the Technical Catalog for the selection.
• 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.
• 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.
2.4 Piping Connection Kit (Optional) between Outdoor Units
Type of Generation
Applicable System
SA, TA: for Heat Pump and
Cooling Only System
(2 Pipes)
Corresponding Outdoor Units
Capacity
[ Standard ]
21: 32 - 48 HP
22: 50 - 60 HP
31: 62 - 90 HP
40: 92 - 120 HP
Refrigerant Type
NP: R410A
Unit Type
MC: Multi Connection Kit for
Outdoor Units
MC - NP 21 SA 1
Item
Applicable Outdoor Unit
Model Remarks
Cooling Only No. of
ODU
Piping
Connection
Kit
32 - 48 2 MC-NP21SA1 for Gas: 1
for Liquid: 1
50 - 60 2 MC-NP22TA
62 - 90 3 MC-NP31TA for Gas: 2
for Liquid: 2
92 - 120 4 MC-NP40TA for Gas: 3
for Liquid: 3

2. Before Installation
14
2.5 Multi-Kit (Optional) between Indoor Unit and Outdoor Unit
Type of Generation
Applicable System
A: for Heat Pump and
Cooling Only System
(2 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
2. Multi-Kit after 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)
3. Header Branch
(Standard Type)
Total Indoor Unit HP No. of Header Branches Model
Max. 8 4 MH-NP224A
Max. 10 8 MH-NP288A
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 - 120 MW-NP2682A3
(Standard Type)
MW - NP 282 A 3
2.6 Factory-Supplied Accessories
Check to ensure that the following accessories are packed with the outdoor unit. (Refer to page 15 for NOTE.)
Table 2.3 Factory-Supplied Accessories (CNCCLW)
Accessory 8HP 10HP 12HP 14HP 16HP 18HP Remarks
Accessory
Pipe
Connection for
Refrigerant Gas Pipe ID ɸ22.4 →
OD ɸ19.05
-ID ɸ22.4 →
OD ɸ25.4
ID ɸ22.4 →
OD ɸ25.4
ID ɸ25.6 →
OD ɸ28.58
ID ɸ25.6 →
OD ɸ28.58
Connection for
Refrigerant
Liquid Pipe
- - OD ɸ9.52 →
OD ɸ12.7
OD ɸ9.52 →
OD ɸ12.7
-OD ɸ12.7 →
OD ɸ15.88
Cord Clamp For Fixing Power
Source Wire
Cable Clamp For Fixing Power
Source Wire ×2 ×2 ×2 ×2 ×2 ×2
Rubber
Bush
For Power Source Wire
Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ70 mm
For Communication
Wire Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ62 mm
For Comm. Wire Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ38 mm
Rubber cap *3 Attach to the bottom
base. ×2 ×2 ×2 ×2 ×2 ×2 *1
Packing *3 Attach to the bottom
base. ×1 ×1 ×1 ×1 ×1 ×1 *2
Screw ×3 ×3 ×3 ×3 ×3 ×3
For xing Cord
Clamp and Spare
Combination
Unit Model
Label
For Indication of
Combination Unit
Model
×3 ×3 ×3 ×3 ×3 ×3
Attach to
Outdoor Unit A
(Main Unit)
Open/Close
Indication for
Stop Valve
For Indication
of “Open” ×2 ×2 ×2 ×2 ×2 ×2
With Fixing Band
Ferrite Core White ×1 ×1 ×1 ×1 ×1 ×1

2. Before Installation
15
Accessory 20HP 22HP 24HP 26HP 28HP 30HP Remarks
Accessory
Pipe
Connection for
Refrigerant Gas Pipe ID ɸ25.6 →
OD ɸ28.58
- - ID ɸ28.8 →
OD ɸ31.75
ID ɸ28.8 →
OD ɸ31.75
ID ɸ28.8 →
OD ɸ31.75
Connection for
Refrigerant
Liquid Pipe OD ɸ12.7 →
OD ɸ15.88
- - ID ɸ15.88 →
OD ɸ19.05
ID ɸ15.88 →
OD ɸ19.05
ID ɸ15.88 →
OD ɸ19.05
Cord Clamp For Fixing Power
Source Wire
Cable Clamp For Fixing Power
Source Wire ×2 ×2 ×2 ×2 ×2 ×2
Rubber
Bush
For Power Source Wire
Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ70 mm
For Communication
Wire Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ62 mm
For Comm. Wire Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ɸ38 mm
Rubber cap *3 Attach to the bottom
base. ×2 ×2 ×2 ×2 ×2 ×2 *1
Packing *3 Attach to the bottom
base. ×1 ×1 ×1 ×1 ×1 ×1 *2
Screw ×3 ×3 ×3 ×3 ×3 ×3
For xing Cord
Clamp and Spare
Combination
Unit Model
Label
For Indication of
Combination Unit
Model
×3 ×3 ×3 ×3 ×3 ×3
Attach to
Outdoor Unit A
(Main Unit)
Open/Close
Indication for
Stop Valve
For Indication
of “Open” ×2 ×2 ×2 ×2 ×2 ×2
With Fixing Band
Ferrite Core White ×1 ×1 ×1 ×1 ×1 ×1
NOTE:
• If any of these accessories is not packed with the unit, please contact your contractor.
*3. Attach the rubber cap and packing as shown in the figure below.
Bottom Base
*1. Attach a rubber cap. *1. Attach a rubber cap.
Bottom Base
Bottom Base
*1. Attach a rubber cap. *1. Attach a rubber cap.
*2. Attach a packing.
RAS-080 to 140CNCCLW RAS-160 to 200CNCCLW
RAS-220 to 300CNCCLW

3. Selection of Installation Location
16
3. Selection of Installation Location
WARNING
• Provide a sufficiently strong foundation. If
not, the unit may fall down and it may lead
to injuries.
• Do not install the outdoor unit where
the flammable gases may occur or leak.
Otherwise, it may cause a fire.
• If the indoor unit is installed in a small room
and the refrigerant gas leakage occurs, the
leaked refrigerant gas fills the room and it
may cause suffocation. Do not exceed the
maximum permissible concentration of the
refrigerant gas in the room. Consult with
distributor for countermeasure such as
ventilation system, etc.
3.1 Installation Location
1. Install the outdoor unit in a well dried, ventilated
environment.
2. Install the outdoor unit where it is in the shade
or it will not be exposed to direct sunshine or
direct radiation from high temperature heat
source.
3. Install the outdoor unit where the sound or the
discharge air from the outdoor unit does not
affect neighbors or surrounding ventilation. The
operating sound at the rear or right/left sides is
3 to 6dB(A) higher than the sound at the front
side indicated in the technical catalog.
4. Install the outdoor unit in a space with limited
access to general public.
5. Check to ensure that the foundation is flat, level
and sufficiently strong.
(Perform the foundation work in order to fix
firmly the outdoor unit to avoid inclining,
abnormal sound or falling down due to a strong
wind or earthquake.)
6. Do not install the outdoor unit where dust or
other contaminations could block the outdoor
heat exchanger.
7. Provide adequate drainage around the
foundation. If installing the unit on a roof or a
balcony, provide the additional drainage around
the foundation to prevent water dripping on a
person or forming ice in winter.
8. Do not install the outdoor unit where a seasonal
wind directly blows to the outdoor heat
exchanger or where strong winds through the
tall buildings directly blows to the outdoor fan.
NOTES:
• Do not install the outdoor unit where there is a
high level of oil mist, flammable gases, salty air
or harmful gases such as sulfur and an acid or
alkaline environment.
• Do not install the outdoor unit where the
electromagnetic wave is radiated directly to
the electrical box.
• Install the outdoor unit as far from the
electromagnetic wave radiator as possible, at
least 3 meters away from it.
Seasonal
Wind
Snow attaches directly
to the heat exchanger.
Provide a base which has
approximately twice the height of
forecast snow accumulation.
Air Inlet
Hood
Air Outle
t
Hood
Seasonal
Wind
3.2 Service Space and Installation Area
Make the service space when outdoor unit is
installed as follows.
If the service spaces for air inlet and outlet
are insufficient, it may cause a performance
degradation and some abnormalities due to
insufficient air intake.
Additionally, the service space is required for
facilitating the maintenance.
(Unit: mm)
Front
Side
Rear
Side
Min. 500 + h 2/2 Min. 300 + h 1/2
< Side View >
765
500
1500 h2
Min. 1500
h1