Hitachi RPIZ-0.8HNATN1Q Instruction Manual

Low-Height
Ceiling
Ducted Type
This manual is exclusively prepared for
R410A indoor unit. Please read this manual
in conjunction with corresponding manual for
outdoor unit.
RPIZ-0.8HNATN1Q RPIZ-1.0HNATN1Q
RPIZ-1.3HNATN1Q RPIZ-1.5HNATN1Q
RPIZ-1.8HNATN1Q RPIZ-2.0HNATN1Q
RPIZ-2.3HNATN1Q RPIZ-2.5HNATN1Q
Models: 0.8~1.3
Model: 1.5
Models: 1.8~2.5
P01975Q
ORIGINAL INSTRUCTIONS

Declaration of Conformity
(Manufacturer’s Declaration)
Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.
Add.: No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao,China
declares under its sole responsibility that the air conditioning models to which this declaration relates:
RPIZ-0.8~2.5HNATN1Q
are in conformity with the following standard(s) or other normative document(s), provided that these
are used in accordance with our instructions:
following the provisions of:
Directives, as amended.
Manufacturing number and manufacturing year: refer to model Nameplate.
Notes:
This declaration becomes invalid, if technical or operational modifications are introduced
without the manufacturer's consent.
Johnson Controls Hitachi Air Conditioning Europe SAS is authorized to compile technical file or
relevant technical documentation.
Address : Rue de Lombardie, Parc Aktiland II – 69800 Saint Priest, France
EN 60335-1
EN60335-2-40
EN 62233
EN 55014-1
EN IEC 61000-3-2
EN 61000-3-3
EN 55014-2
2006/42/EC
2014/30/EU
2012/19/EU
2011/65/EU
2014/35/EU
1907/2006/EC
Name, Surname :
Position/ Title
Date
: Director
: Aug. 17, 2021

Dear user:
Thank you for choosing and using our product. To better understand and use this product, please be sure to read and
observe the following related issues before use.
This manual should be considered as a permanent part of the air conditioning equipment. Please keep it properly.
This manual describes and introduces this heat pump air conditioner in a unified manner, so it's applicable for your and
other air conditioners.
Hitachi pursues a policy of continuous improvement in design and performance of products. The right is therefore
reserved to change specifications without notice.
Our company shall not be held responsible for any occasional damage to the air conditioner that arises during its
operation in specific environment. This air conditioner is designed for standard air conditioning only. Do not use it for
other purposes such as drying cloth, refrigerating foods or for any other cooling or heating processes. Please don't
install the air conditioner in the following environments. Otherwise, fire, machine deformation or failure may arise.
*Places with spatter of oil (including machine oil).
Places with inflammable gases.
*
*Places with sulfurated gases or silicon (e.g. hot spring, etc.).
Coastal areas with much salt or places exposed to strong acids
or bases that may cause corrosion to machine.
●
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IMPORTANT NOTICE
Signal words (DANGER, WARNING and CAUTION) are used to indicate hazard seriousness. Definitions of the
hazard levels are provided below with respective signal words.
Do not have the air outlet directly faced towards animals or plants, since this may bring about an adverse effect
thereon.
The installation and service engineering have to comply with local standards, laws and regulations.
As an "appliance inaccessible to the public", the installation height of indoor unit of the air conditioner shall be at least
2.5m.
This air conditioner can only be installed by dealers or professionals. The installation by user may lead to water
leakage, electric shock or fire.
In case of any question, please consult the dealer or the service center designated by our company.
●
*
CAUTION
●
DANGER
WARNING
NOTE
: Immediate hazard that WILL result in severe personal injury or death.
: Hazards or unsafe practices that COULD result in severe personal injury or death.
: Hazards or unsafe practices which COULD result in minor personal injury or damage to
property damage.
: Useful information for operation and/or maintenance.
●Refer to the instruction manual for complete machine (outdoor unit) for information about the product
standards to which the indoor unit is subject.
Ⅰ

●
●
●
●
●Refrigerant R410A is non-flammable, non-toxic, and odorless, and may produce toxic gases when exposed to open
flame. Since this refrigerant gas is heavier than air, it may result in lack of oxygen, thereby leading to breathing
difficulties when the area near the ground is filled with this gas. If that's the case, please turn off the main switch
immediately, cut off the power supply, and open the doors and windows for ventilation. Put out any open flame, and
contact your service dealer. Performing leak detection and gas tightness test with oxygen, acetylene or other
flammable and toxic gases may cause explosion, so nitrogen is recommended for this test.
●The standards for safe refrigerant leakage in construction and system operation are determined based on local
regulations or standards.
●Use ELB with medium or higher sensing speed (ELB with an operating time of 0.1 seconds or less), or electric
shock or fire may arise.
●For installation, the refrigerant piping must be firmly connected before the operation of compressor. For repair, the
refrigerant piping must be moved, handled and removed after the stop of compressor.
●Please don't short-circuit the protective device (e.g., the pressure switch, etc.) during operation, since this may
cause fire or explosion.
●
●
●
●
●
●
●
●
●
Do not use any sprays such as insecticide, lacquer, hair spray or other flammable gases within approximately one (1)
meter from the system.
If the earth leakage breaker (ELB) is frequently activated, please stop the system and contact your local dealer or
customer services.
Make sure the ground wire is securely connected. The improper grounding of machine may lead to electrical failure.
Please don't connect the ground wire to gas pipes, tap water pipes, lightning rods or phone ground wires.
Make sure there are no flammable materials around during brazing operation. Please wear leather gloves to prevent
frostbite when filling refrigerant.
Prevent rats or other small animals damaging the wiring and electrical components. Bitten unprotected parts may
cause a fire.
Firmly fix the connection wires. The external force of terminal may result in looseness of terminal that may cause a
fire.
Make sure the air conditioner is installed with enough strength of fixation; otherwise, the air conditioner may fall or
topple over, which may bring about machine damage or personal injury.
Please follow the installation instructions and related regulations and standards for electrical construction; otherwise,
electrical failure or fire may occur due to inadequate capacity or inconsistent specifications.
Never fail to use specified wiring and select correct wiring, since failure to do so may cause electrical failure or fire.
Please make sure the outdoor unit is not covered with snow or ice before use.
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
The A-weighted emission sound pressure don't exceed 70 dB(A) .
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
●
本空调维修保养只能由专业人员进行。
●
Please don't perform installation works such as refrigerant piping connection, drain pipe connection, and wiring
connection. Violations may result in system leakage, electrical failure or fire. In the case of fire, please turn off the
power immediately; please don't touch electrical parts with the hands, or electric shock may arise.
Do not pour water into the indoor or outdoor unit. This machine is an electric product that may develop serious
electric failure when exposed to water.
Do not open the service cover of indoor or outdoor units without turning OFF the main power supply; otherwise, this
may bring about serious safety accident.
Do not touch or adjust safety devices inside the indoor or outdoor units. If they are touched or readjusted, serious
accident may arise.
DANGER
WARNING
Ⅱ
●
●
●
●Please turn off power supply as soon as possible when a fire breaks out.
●Please don't touch electrical components since this may result in electric shock.

CHECKING PRODUCT RECEIVED
●
●
Upon receipt of this product, check it for any shipping damage.
Claims for damage, either apparent or concealed, should be filed immediately with the shipping company.
Check the model number, electrical parameters (power supply, voltage, and frequency) and accessories to
determine if they are correct. Please contact your local dealer in case of problem.
Our company shall not be held responsible for any consequence arising from the modification to equipment
without our written consent.
Ⅲ
ⅠⅠⅠ
IMPORTANT NOTICE
Correct Disposal of this product
This marking indicates that this product should not be disposed with other
household wastes. To prevent possible harm to the environment or human
health from uncontrolled waste disposal, recycle it responsibly to promote the
sustainable reuse of material resources. To return your used device, please use
the return and collection systems or contact the retailer where the product was
purchased. They can take this product for environmentally safe recycling.

7
7
7
3
1
1
1
2
1
1
1
1
TABLE OF CONTENTS
1.Safety Precautions
Installation of Indoor Unit
4.1 Factory-Supplied Accessories
4.2 Initial Check
4.3 Installation
Refrigerant Piping Work
5.1 Piping Materials
5.2 Piping Connection
8.Test Run
9.Protection and Control Devices
10.Field Operation
Electrical Wiring
7.1 General Check
7.2 Wiring
7.3 Field Wire Size for
Power Source Line
4
4
5
6
9
9
10
10
2.
4.
5.
6.Drain Pipe
Tools & Instruments for Installation
Transportation & Handling
3.1 Transportation
3.2 Handling of Indoor Unit
3.
7.
10.1 Setting of DIP Switch
10.2 Setting of Fan Speed 10
8

Note: When in immediate contact with refrigerant, please use the installation tools and instruments dedicated to the new refrigerant.
1. Safety Precautions
Do not perform installation work, refrigerant piping
work, drain piping and electrical wiring connection
without referring to the installation manual.
Check that the ground wire is securely connected.
Connect a fuse of specified capacity.
CAUTION
Do not install the indoor unit, outdoor unit,
remote control switch and cable
within approximately 3 meters from strong
electromagnetic wave radiators such as
medical equipment.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
No. Tool
Handsaw
Screwdriver
Vacuum Pump
Refrigerant Gas Hose
Megohmmeter
Copper Pipe Bender
Water Pump
Pipe Cutter
Brazing Kit
Hexagon Wrench
Tool
Spanner
Charging Cylinder
Multi-purpose Measuring Instrument
Cutter for Wires
Gas Leak Detector
Leveller
Clamper for Solderless Terminals
Hoist (for Indoor Unit)
Ammeter
Voltage Meter
No.
3. Instructions for Transportation & Handling
Do not put any foreign material into the indoor unit and
check to ensure that none exists in the indoor unit
before the installation and test run. Otherwise, a fire or
failure, etc. may occur.
Be careful not to cause damage to insulation materials
of the unit surface when it's lifted.
2. Tools & Instruments for Installation
4. Installation of Indoor Unit
Do not install the indoor unit in a flammable
environment since this may cause fire or an
explosion.
4.1 Factory-Supplied Accessories
Check to ensure that the following accessories
are packed with indoor unit.
If any of these accessories are not packed with the unit,
please contact your dealer.
Transport the product as close to the installation
location as practical before unpacking.
3.1 Transportation
DANGER
Since the pressure of new refrigerant R410A is 1.4 times that of traditional refrigerant, its performance is susceptible
to impurities like moisture, scale and grease, etc. It's essential to remove the moisture, dust, other refrigerants or
refrigerant oils from the refrigeration system. Hence, the failure to use specified materials and tools may result in
explosion, personal injury, refrigerant leakage, electrical failure or fire.
●
●
●
Do not install the indoor unit outdoors. If installed
outdoors, an electric hazard or electric leakage will
occur.
Do not put any material on the product.
3.2 Instructions for Handling
WARNING
WARNING
CAUTION
CAUTION
Install the indoor unit as per national standard
1
CAUTION

4.2 Initial Check
Install the indoor unit in a space for easy operation
and maintenance as shown in Fig. 4.1.
Fig. 4.1 Space around Indoor Unit
●The indoor unit must be installed at an appropriate
location so that the indoor temperature can be evenly
distributed.
●There should be no obstruction of air flow at the vent.
2
●
Back
Front
Electric Box
Service Access (≥450)
Top View
Models 0.8~2.5
1. Where the ceiling
is not removable,
please arrange a
necessary service
access under the
indoor unit.
2. The service access
shall be so
arranged that the
electric box cover/
internal
components can be
removed/repaired
in a convenient
manner.
600 Min.
100
1000 Min.
140 600
600
1000 Min.
To avoid any corrosive action to the heat exchangers,
do not install the indoor unit in an acid or alkaline
environment.
●
Do not install the indoor unit in a machinery shop or
kitchen where vapor from oil or its mist flows to the
indoor unit.
Once the oil deposits on the heat exchanger, it may
impair the performance of indoor unit and cause
damage to plastic parts therein.
Pay attention to the following points when the indoor
unit is installed in a hospital or other facilities where
there are electronic waves from medical equipment, etc.
●
●
(A) Do not install the indoor unit where the
electromagnetic wave is directly radiated to the
electrical box, remote control cable or remote
control.
(B) Install the indoor unit and components as far as
practical or at least 3 meters from the electromagnetic
wave radiator.
(C) Install the remote control switch in an iron box.
Arrange the remote control cable in an iron
tube. Ground the iron box and iron tube.
(D) Install a noise filter when the power supply emits
harmful noises.
Table 4.1 Factory-Supplied Accessories
Unit:mm

4.3.3 Mounting the Indoor Unit
Mount the indoor unit as shown in Fig. 4.4.
Mount field-supplied parts
4-M10 or W3/8Suspension bolt
Nut
Washer
8- M10 or W3/8
8-M10 or W3/8
3
4.3.2 Connection Points of Suspension Bolts and Pipes
(1) Indicate the location of suspension bolt, and the
connection points of refrigerant pipe and drain pipe
(2) Installation dimensions are shown in Fig. 4.3.
Models 0.8~2.5
Outgoing Direction
Top View
Indoor Unit Capacity (HP)
1.5
1.8~2.5
b
a
950
1220
910
1180
mm
Fig. 4.3 Suspension Bolt
0.8~1.3 740 700
410 (Dimensions of Suspension Bolt
a (Dimensions of Suspension Bolt)
b
447
25
8
Fig. 4.4 Installation of Indoor Unit
Suspension Bolt (4-M10 or W3/8)
(Field Supplied)
Nut and Washer
(4-M10 or W3/8)
(Field Supplied)
(1) Install suspension bolts and nuts
Mount nuts to the four bolts as shown in Fig. 4.5.
Nut
Indoor Unit
Washer Nut
Approx. 50mm
a (Height of Hook)
mm
Capacity of Indoor
Unit (HP)
0.8~2.5
a
192
Fig. 4.5 Suspension Bolts and Nuts
c
c
750
1020
539
4.3 Installation
4.3.1 Suspension Bolts
(1) Select appropriate location and direction for
installation, and pay careful attention to the space for
the piping, wiring and maintenance.
(2) Cut out the area for the indoor unit in the false ceiling
and install suspension bolts, as shown in Fig. 4.2.
Fig. 4.2 Mounting the Suspension Bolts
For Concrete Slab For Steel Beam
150 to 160mm Screw in
(100 to 150kg)
Concrete
Suspension Bolt
(W3/8 or M10)
Fixing Point
I Beam
Suspension Bolt
(W3/8 or M10)
For Wooden Beam
Suspension
Wooden Rib
(60mm to 90mm
lumber)
Wo oden Beam
Nut Square Washer
Suspension Bolt
Nut
Square Washer
Support Leg

Use refrigerant R410A in the refrigerant cycle. Do not
charge oxygen, acetylene or other flammable and
poisonous gases into the refrigerant cycle when
performing a leakage test or an air-tightness test. These
gases are extremely dangerous and can cause an
explosion. It is recommended nitrogen be used for those
tests.
5. Refrigeration Piping
DANGER
5.1 Piping Materials
(1) Prepare locally-supplied copper pipes.
(2) Select clean copper pipes. Make sure there is no
dust and moisture inside. Blow the inside of the
pipes with nitrogen or dry air, to remove any dust
or foreign matters before connecting pipes.
(3) Select copper pipes based on Fig. 5.2.
4
(2) Install indoor unit
Place the left bracket on the nut and washer of
suspension bolt as shown in the figure below.
Make sure the left bracket is properly placed on
the nut and washer, and put the right bracket of
indoor unit on the nut and washer.
(The suspension bolt can be slightly shifted for the
placement of indoor unit.)
Fig. 4.6 Handling Method
4.3.4 Leveling of Indoor Unit
(1) Check to ensure the top surface is level,
and measure the max. top surface
inclination degree.
Fig. 4.7 Top Surface Inclination Degree
(2) As shown in Fig. 4.7, the rear part of indoor unit is
slightly lower than its front part (by 0~5mm) so as
to facilitate drainage.
(3) Tighten the suspension nut upon completion of
adjustment. It’s essential to apply thread locker to
prevent the nut getting loose.
Please cover the machine with plastic cloth during
installation so as to keep it clean.
Support Leg
Nut and Washer Indoor Unit
Suspension Bolt
Support Leg
5mm
Air duct is connected to indoor unit via canvas hose to
effectively isolate noise and vibration. Indoor unit is
designed with flange with hole connectible to air duct.
〈Example〉
4.3.5 Air Duct Connection
Fig. 4.8 Air Duct Connection
CAUTION
Canvas Air Duct Canvas Air Duct Plenum Chamber
Volume Damper
Plenum Chamber
Service Access Return Air Inlet
(For Fine Adjustment)
Air Outlet Level
Thermal Insulation Material
Volume Damper
Outside Air
Outside Air that Passes Filter
(With Filter)

Unit Side
Refrigeration Piping
(Field-Supplied)
Insulating Pipe
(Field-Supplied)
Cord Clamp
(Factory-Supplied)
Insulating Pipe
(Field-Supplied)
Fig. 5.1 Pipe Connection Points
Fig. 5.2 Pipe Diameter
Since the nut cap connected at gas pipe is designed
exclusively for R410A, the piping flaring connected
for off-factory installation is adjusted as compared
with R22 and R407C. Please perform the processing
operation based on the dimensions shown below:
(See Fig. 5.3)
Unit: mm (in.)
(2) As shown in Fig. 5.4, two spanners shall be used for
tightening the nut
Insulating Pipe
Cap the end of the pipe when the pipe is to
penetrate a hole.
Do not put pipes on the ground directly without a
cap or vinyl tape arranged at the end of the pipe.
Do not put pipes on the ground directly
Correct
Incorrect
Blocked with Tape or Plug
(4) Discharging and Charging Refrigerant
Follow the Installation & Maintenance Manual for
outdoor unit.
Excessive and inadequate refrigerant is a leading
cause of system anomaly.
Please inject the right amount of refrigerant.
Pipe Size Tightening Torque (N.m)
20
40
60
80
Φ15.88
Φ12.7
Φ9.53
Φ6.35
Outside Diameter of
Piping (a)
Outside
Diameter
of Flaring
(D)
R22, R407C
R410A
16.2
16.6
19.4
19.7
Φ12.7
(1/2)
Φ15.88
(5/8)
Fig. 5.3 Flaring
5.2 Piping Connection
Fig. 5.4 Nut tightening torque
(3) Insulate the refrigeration piping with field-
supplied insulating pipe upon completion of
refrigerant pipe connection. See Fig. 5.5.
Fig. 5.5 Insulation on Pipes
900 ±20
450
R0.4~0.8
a
D0-0.4
±20
CAUTION
CAUTION
●
●
5
(1) The connection point and diameter of piping
are shown in Figs. 5.1 and 5.2.
Unit: mm (in.)
Refrigerant
Liquid Tube
Refrigerant
Gas Tube
Drain Pipe
for Drain Pump
Indoor Unit Capacity (HP)
5
5
55
Gas Pipe Liquid Pipe
0.8~1.5
1.8~2.0
2.3~2.5

6.
Where the relative humidity of air inlet or ambient
air exceeds 80%, an auxiliary water pan shall be
fabricated at installation site and placed under
the indoor unit, as shown in Fig. 6.2.
Indoor Unit
Water Outlet
Condensate Pan
(Field-Supplied)
Fig. 6.2 Water Pan
a.Turn on the power.
b.Fill the water pan with 2L or 2.5L of water.
c. Check and ensure the water flows without
obstruction and no leakage exists. Pour 2L of
water if no water flows out of pipe end.
CAUTION
(1) The drain pipe installed shall slope down; otherwise,
the condensate may flow back and leak into the room
when the indoor unit is turned off.
(2) The drain pipe shall not be connected with sewage
pipe or other drain pipes.
(3) Where the main drain is connected to other indoor
units, each indoor unit must be higher than the main.
Select drain pipes in ample size depending on the
refrigerating capacity and quantity of indoor units.
(4) Check if water flows without obstruction following
the procedure shown below after the proper
connection of wires and drain pipes.
Drain Pipe
(1) The position of the drain pipe connection is
shown in Fig. 6.1.
(2) Prepare a polyvinyl chloride pipe with a
32mm outer diameter.
(3) Fasten the tubing to the drain hose with the
adhesive agent and the factory-supplied
clamp. The drain pipe must be performed
with a down-slope pitch of 1/25 to 1/100.
6
Fig. 6.1 Drain Pipe
(4) Insulate the drain pipe after connecting the
drain hose.
291 50~576
374~900 (Lift)
Drain Pipe (PVC Pipe, VP25)
(Field Supplied)
1/25~1/100 Down-Slope
Drain Lift Pipe (PVC Pipe,
VP25)
(Field Supplied)
Indoor Unit
Water Pan
Drain Pump
Drain Pipe (300L)
(Accessory)
Rubber Stopper
(Accessory)
Pipe Support
(Field Supplied)
90º Bend (VP25)
Field Supplied
188
380
235
25
25 25
58
58
CAUTION

Wrap the wires with adhesive tape or other materials
and plug the wiring connection hole with seal
material to protect the product from any condensate
water or insects.
Tighten screws to the following torques.
The electrical wiring connection for indoor unit is
shown in Fig. 7.1.
(1) Connect the remote control wire to the PCB
in electrical box through the connection hole
on electrical box.
(2) Connect the power supply and earth wires to
the terminals in the electrical box.
(3) Connect the wires between the indoor unit
and the outdoor unit to the terminals in
electrical box.
WARNING
CAUTION
●
●
7.2 Electrica l Wiring Connection
7. Wiring
7
M4: 1.0~1.3 N·m
M5: 2.0~2.4 N·m
M6: 4.0~5.0 N·m
M8: 9.0~11.0 N·m
M10: 18.0~23.0 N·m
7.1 General Check
(1) Make sure that the field-selected electrical
components (main power switches, circuit
breakers, wires, conduit connectors and wire
terminals) comply with the National Electrical
Code.
(2) Check to ensure that the power supply voltage is
within ±10% of the rated voltage. The system
can’t be started in the case of excessively low
supply voltage.
(3) Check the power capacity.
(4) Ensure the ground wire is connected.
(5) Install the main switch with a space of 3.5mm or
more between phases.
(4) The power wire, communication wire and
remote controller wire outside of electric
control box should be fixed with cord
clamps, please fasten the bolts to satisfy
the requirement to tensile force.
(5) The external static pressure of this indoor
unit is 10Pa at delivery, and the 10Pa plug
(white) of motor is connected to the PCN18
terminal of substrate. To set the external
static pressure to 30Pa, please connect the
30Pa plug (red) of motor to the PCN18
terminal of substrate as shown in the figure
below.
Remove the fastening screw on electric box cover
White
Indicating the text "10Pa"
Red
Indicating the text "30Pa"
１０Ｐａ3０Ｐａ
Switching between external static pressures of 10Pa and 30Pa
Air Inlet
Air Outlet
Electric Box
●Turn OFF the main power switch to the indoor
unit and the outdoor unit and wait for at least
10 minutes before electrical wiring work or a
periodical check is performed.
●Check to ensure that the indoor fan and the
outdoor fan have stopped before electrical
wiring work or a periodical check is performed.
●Protect the wires,drain pipe, electrical parts,
etc. from rats or other small animals.
If not protected, rats may gnaw at unprotected
parts and at the worst, a fire will occur.
●Avoid any wire from contacting with
Refrigerant tube, edge of metal plate and
electrical part in the equipment, or otherwise
the wire may be damaged or even thereby
cause fire.
●ELB with intermediate induction rate (with
shorter than 0.1 second or fewer) shall be
used, or otherwise electric shock or fire may
be caused.
●Wire shall be fixed securely, since external
force imposed to the connecting terminal may
make it loose and thereby cause fire.
●Do not use the power terminal strip used for
the air conditioner to sub-connect any power
cable, but use power branch box to sub-
connect power wire at indoor unit side instead,
and be sure to calculate wire capacity, or
otherwise too low capacity may cause fire.
●The system shall not be started until all
inspections have been performed properly.

Fig. 7.1 Electrical Wiring Connection for Indoor Unit
7.3 Specifications of Power Cords for Field Connection, Electrical Parameters of Indoor Unit, and Wire Size
Note:
(1) Field wiring shall be in conformity to local laws and regulations, and all wiring operations
must be performed by qualified professionals.
(2) Refer to relevant standards for above-noted power cord size.
(3) Where power cord is connected through junction box in series, be sure to determine the
total current and choose wires based on the table above.
(4) As a minimum, the chosen power cord shall be compliant with requirements on
neoprene sheathed wire #57 as stated in IEC 60245-1, while the power cord shall be made
from copper conductor.
(5) The wiring specifications for weak-current communication circuit shall not be lower than
that for RVV(S)P shielded wires or equivalent, and the shielding layer shall be
grounded.
(6) A switch that can ensure all-pole disconnection shall be installed between power supply
and air co nditioning unit in such a manner that the contact spacing shall not be less than
3mm.
(7) Once the power cord is damaged, the dealer or the professionals from designated
maintenance department must be contacted in a timely manner for repair and
replacement.
(8) For the installation of power cord, the ground wire must be longer than the current-
carrying conductor.
junction box.
8
Models 0.8~2.5
Enlarged View of P Part
Terminal
Block (TB)
Wiring
220V-240V 50Hz
Wired
Remote
Control Wire
Communication
Cable
Power Cord
0.8
1.0~1.3
1.5
1.8~2.0
2.3~2.5
(HP)
220-240V~50Hz
Rated Current
Film Capacitor PTB
D
The View of D Direction
Communication Wire
Remote Controller Wire
Cord Clamps
Power Wire
NOTE:
◆ Tightly secure the power source wire by cord clamp inside the unit.
◆ Use shielded twisted pair for the connection of transmission wires between
the outdoor and indoor units, and the transmission wires between the indoor
units and wired controller.

9. Protection & Control Devices
Indoor Unit
8. Test Run
Test run should be performed according to this Manual.
●Do not operate the system until all the check points
are cleared.
(A) Check to ensure the electrical resistance between
terminal and ground is more than 1 MΩ. If this is
not the case, do not operate the system until the
electrical leakage is found and repaired.
(B) Check to ensure the stop valves of outdoor unit are
fully opened, and then start the system.
(C) Check to ensure the switch on main power source
has been ON for more than 12 hours
to warm the compressor by heater.
Pay attention to the following items while
the system is running.
(A) Do not touch any of the parts by hand at the
discharge gas side, since the temperatures of
compressor chamber and the pipes at the
dischar ge side are higher than 90°C.
(B) Do not push the button of the AC
contactor. It will cause a serious
accident.
WARNING
●
9
Freeze Protection Temperature
Set Temperature Difference
Cut-out
Cut-in
℃
℃
℃
14
2
Capacity of Indoor Unit (HP)
Capacity of Fuse on Indoor Unit Control
Circuit A5
0
Temperature Controller on
Fan Motor of Indoor Unit
Cut-out
Cut-in
℃
℃
0.8~2.0
130±5
85±15
2.3~2.5
130±5
90±15

10. Field Operation
10.1 Setting of Dip Switches
(1) DIP switch must be set with power sources of the
indoor and outdoor units in OFF state. Otherwise,
the settings are invalid.
(2) The DIP switches are located as shown in the
figure below.
(3) 2 rotary switches and 5 dip switches are arranged
on the PCB of indoor unit, and the dip switches
must be set based on the following instructions
before test run. The system shall not be started
before the completion of dip switch setup.
(a) Numbering of indoor units (RSW1&DSW6): All
indoor units must be numbered in sequence
based on the diagram below. Outdoor units
must be numbered from "0".
(b) Refrigeration system code No. (RSW2 &
DSW5) is required to be set. All are set to
OFF before delivery.
(e) Safety reset (DSW7)
*Factory settings
Once strong current is
accidentally connected to
Terminals 1 and 2 of TB2, the
PCB fuse will be blown. In such
a case, it's essential to correct
the wiring and then to set switch
No. 1 to ON position.
Note:
Symbol " " indicates the location of DIP switch.
The position indicated in the diagram is in the
factory-set state.
The power supply shall be turned off before the
setup of DIP switch. Otherwise, the settings will be
invalid.
10
RSW1
RSW2
DSW6
DSW5
DSW4
DSW7
DSW3
Setting of Indoor Unit
DSW6 (tens digit) RSW1 (units digit)
Setting position Insert a flat head screw
driver into the slot for
setup
Ex.) Set machine No. 16
DSW6
No. 1 is ON
Set to "6"
DSW6 and RSW1 are set to "0" before delivery.
When H-LINKII is used, up to 64 indoor units can be connected.
When H-LINKII is not used, up to 16 indoor units can be connected.
Setting of Refrigerant System
DSW5 (tens digit) RSW2 (units digit)
Setting position
Insert a flat head screw
driver into the slot for
setup
Ex.) Set system No. 6
DSW5
No. 1 is OFF
Set to "6"
DSW5 and RSW2 are set to "0" before delivery.
When H-LINKII is used, up to 64 indoor units can be connected.
When H-LINKII is not used, up to 16 indoor units can be connected.
RSW2
(c) Setting of capacity code (DSW3)
This switch is used to set indoor unit capacity.
The capacity is set before delivery.
(d) Model code setting (DSW4)
The code is set before delivery.
CAUTION

P01975Q 11.2021 V01
1154118
Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.
Add.: No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China
The Company is committed to continuous product improvement. We reserve the right, therefore, to alter the product
information at any time and without prior announcement.