Hitachi RPIH-3.0HNAUN1Q Instruction Manual

Ceiling Ducted
Type
RPIH-3.0HNAUN1Q
RPIH-3.3HNAUN1Q
RPIH-4.0HNAUN1Q
RPIH-5.0HNAUN1Q
RPIH-6.0HNAUN1Q
RPIM-0.8HNAUN1Q
RPIM-1.0HNAUN1Q
RPIM-1.3HNAUN1Q
RPIM-1.5HNAUN1Q
RPIM-1.8HNAUN1Q
RPIM-2.0HNAUN1Q
RPIM-2.3HNAUN1Q
RPIM-2.5HNAUN1Q
RPIL-0.8HNAUN1Q
RPIL-1.0HNAUN1Q
RPIL-1.3HNAUN1Q
RPIL-1.5HNAUN1Q
RPIL-1.8HNAUN1Q
RPIL-2.0HNAUN1Q
RPIL-2.3HNAUN1Q
RPIL-2.5HNAUN1Q
RPIL-3.0HNAUN1Q
RPIL-3.3HNAUN1Q
RPIL-4.0HNAUN1Q
RPIL-5.0HNAUN1Q
RPIL-6.0HNAUN1Q
This manual is exclusively prepared for
R410A indoor unit. Please read this manual
in conjunction with corresponding manual for
outdoor unit.
P01973Q
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:
RPIH-3.0~6.0HNAUN1Q, RPIM-0.8~2.5HNAUN1Q, RPIL-0.8~6.0HNAUN1Q
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
Name, Surname :
Position/ Title
Date
: Director
: Aug. 17, 2021
EN 60335-1
EN 60335-2-40
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

i
This manual should be considered as a permanent part of the air conditioning equipment. Please keep it properly.
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.
●
Signal words (DANGER, WARNING and CAUTION) are used to indicate hazard seriousness. Definitions of the hazard levels
are provided below with respective signal words.
●
●Please don't perform installation works such as refrigerant piping connection, drain pipe connection, and wiring connection without
reading the Installation Manual. Violations may result in system leakage, electrical failure or fire.
●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.
●Refrigerant leakage may bring about oxygen deficit-induced respiratory difficulty. In case refrigerant leakage is detected,
please turn off the main switch immediately, extinguish any naked flame, and contact service dealer.
●Make sure air tightness test is performed.
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 (ELCB with an operating time of 0.1 seconds or less), or electric shock or fire may arise.
IMPORTANT NOTICE
●
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 conditioner can only be installed by dealers or professionals. The installation by users may cause water leakage,
electric shock or fire.
●
●
●
●
●
●
●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.
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.
DANGER
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.
●
●

●
●
●
●
●
●
●
●
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.
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.
●Do not stamp on the machine or place sundries thereon.
●Do not put extra materials on or in the machine.
Rooms are recommended to be ventilated once every 3-4 hours.
NOTE:
Heat pump air conditioners may malfunction under the following conditions:
*The power available from power transformer is less than or equal to the electrical power of air conditioner.
*The excessively short distance from the power cord of air conditioner to any high-power electrical equipment results in
extremely high inductive surge voltage in the power cord of air conditioner.
This air conditioner must be serviced by professional maintenance personnel.
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.
The standard operation method for the machine is described in the present manual. Please contact local
dealer when problem arises.
Our company shall not be held responsible for any consequence of the modification to machine performed
without its written consent.
WARNING
CAUTION
●
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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.

4
4
4
4
4
Unit Description
Part Name
3.1 Indoor Unit
3.2 Remote Control
Before Operation
Operation Mode
Auto Control
Cleaning of Filter
7.1 Removing Filter
7.2 Cleaning Filter
7.3 Resetting Filter Indicator
8.1 If Trouble Still Remains
8.2 No Operation
8.3 Not Cooling or Heating Well
8.4 This is Not Abnormal

5
5
6
6
6
6
6
7
7
9
9
10
11
12
12
12
13
13
13
14
15
14
Section 2 Installation & Maintenance Manual
Wiring for Static Pressure
Protection and Control Devices
Field Operation

11.3 1.5
2.3
2.0
3.3
3.0 4.0
0.8
Do not have the indoor unit or outdoor unit
exposed to water. All these parts are designed
with electronic components that may cause
short circuit when exposed to water.
If the indoor switchboard or fuse is frequently
cut off, please take the air-conditioning system
out of service and contact our agency.
Unit Description
This heat-pump type air conditioning unit can consist
of one outdoor unit and several indoor units. Detailed
configurations are stated in the corresponding
installation & maintenance manual for outdoor unit.
This heat-pump type air conditioner is applicable for
refrigeration, heating, dehumidification and air supply,
etc. These features are controlled with a remote
control (optional).
3. Part Name
3.1 Indoor Unit
Refer to Fig. 3.1 "Ceiling Ducted Indoor Unit"
3.2 Remote Control
Refer to the remote control instruction manual for
operation details.
Table 2.1 Capacities of Indoor Units
Nominal Capacity (HP)
Indoor Unit
Ceiling
Ducted Type
1.8
5.0 6.0
2.5

Models: 0.8~2.5
Models: 3.0~6.0
Fig. 3.1 Ceiling Ducted Indoor Unit

Refer to the instruction manual for the wired control
used with the machine.
The units that have been left unused for a long period of
time shall be electrified for more than 12 hours before
startup. Do not start the machine immediately after
power-on since this may cause damage to compressor
due to inadequate warm-up of lubricating oil.
Please check if the outdoor unit is covered with ice or
snow. If yes, please remove the ice or snow with warm
water. However, the water temperature shall not exceed
50°C since this may cause damage to plastic parts.
Turn off the main power supply if the machine is
expected to be left unused for more than 3 months,
because the oil heater band consumes power even if
the compressor is not in service. You are
recommended to entrust maintenance personnel to
check the unit before startup.
5. Operation Mode
6. Auto Control
This system is designed with the following features.
NOTE
Please keep the main power supply ON unless the
system is left unused for long. By doing so, the drainage
pump (if any) starts to function when the level of
accumulated water in machine exceeds the predefined
level.
To protect the compressor, it is prevented for at least
3 minutes from functioning after its stop. The
compressor automatically gets started in 3 minutes.
Three-Minute Stop Protection
Three-Minute Operation Protection
Ensure the compressor runs at least for 3 minutes (if
the compressor runs for less than 3 minutes, it can't
stop unless 3 minutes elapse even if all indoor
temperatures reach the set values). However, the
compressor that runs for less than 3 minutes can be
brought out of service with the remote control.
Oil Return Operation
When an indoor unit is out of service for more than 2
hours during refrigeration, it will run for a few minutes
automatically to prevent the detention of refrigeration
oil in the indoor unit in stopped state.
3
Freeze Protection during Refrigeration
When the outlet air temperature of indoor unit is
excessively low, refrigeration may be automatically
switched to air supply mode, in which the unit runs for
a period of time to avoid frosting on indoor heat
exchanger.
Cold Air Prevention
To prevent the output of cold air from indoor unit in
heating mode, the fan runs at low speed. The fan
speed is set based on outlet air temperature of indoor
unit.
Control of Indoor Fan during Defrosting
The indoor fan is out of service during automatic
defrosting of outdoor unit.
Surplus Heat Output from Indoor Unit
Upon completion of heating, the indoor fan will keep
on running at low speed for approx. 2 minutes to
reduce the temperature of machine body.
Automatic Defrosting
Press "Run/Stop" key to stop heating. The outdoor
unit can automatically detect frost and automatically
perform defrosting for up to 10 minutes.
Overload Protection
Heating stops when outdoor temperature is
excessively high during heating. The heating
resumes when the outdoor temperature drops to a
certain level.
NOTE
If the unit stops due to power breakdown, the
system will not automatically get into service even
if power supply is restored.
Please restart the unit from Step 1. The settings
will not get lost in the case of extremely short
power-off time (within 2 seconds). The system will
come into operation automatically in approx. 3
minutes.
4. Before Operation

4
7. Cleaning of Filter
The operation of indoor unit is strictly prohibited without
filter.
Please turn off the main power supply before
removing the filter (the previous operational function
may occur).
7.1 Removing Filter
7.2 Cleaning Filter
Please clean the filter in the following steps.
Step 1
Use a dust collector or water to remove the dirt from
filter.
Never use hot water of which the temperature is above
approx. 40°C.
Step 2
Whisk the water off, and air-dry the filter in a space
exposed to no sunlight.
7.3 Resetting the Filter Indicator
Press the "Reset" key after the cleaning of
filter . The filter screen indicator "FILTER "
disappears, while the time of next cleaning of
filter is set automatically.
8.1 If Trouble Still Remains
If the trouble still remains even after checking
the following, contact your contractor and inform
them of the following items.
(1) Unit Model Name
(2) Content of Trouble
(3) Alarm Code No. on Liquid Crystal Display
8.2
8.3
8.4

Check whether the design pressure of machine is 4.15 MPa. The following tools are necessary
for the installation & construction.
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.
5
No. Tool No. Tool
Handsaw
Phillips Screwdriver
Vacuum Pump
Refrigerant Gas Hose
Megohmmeter
Copper Pipe Bender
Water Pump
Pipe Cutter
Brazing Kit
Hexagon Wrench
Spanner
Charging Cylinder
Gauge Manifold
Cutter for Wires
Gas Leak Detector
Leveller
Clamper for Solderless Terminals
Hoist (for Indoor Unit)
Ammeter
Voltage Meter
Please use vacuum pump, refrigerant pipe, charging cylinder and gauge manifold designed for
R410A. The combination with other refrigerant equipment is prohibited.

6
2.5
Install the indoor unit as per national standard.
Please contact the dealer if the accessories are not
delivered with machine.
possible

7
Models: 0.8~2.5
Back
Front
Electric Box Service Access (≥450)
Top View
Models: 3.0~6.0
Electric Box Service Access (≥450)
1. When the ceiling is
not removable, please
arrange a necessary
service access under
the indoor unit.
Back
Front
Top View
Indoor unit must be so positioned that the indoor
temperature is distributed evenly.
There should be no obstruction that blocks air
flow indoors and at air vent.
Install suspension bolts as shown in Fig. 4.2.
For Concrete Slab
150 to 160mm
Steel
Insert
(100 to150kg)
Concrete
Anchor Bolt
(W3/8 or M10)
For Steel Beam
Suspension Bolt
(W3/8 or M10)
l Beam
For Wooden Beam
Wooden Rib
(60 to 90mm square timber)
Wooden Beam Suspension Bolt
Square Washer
Nut
Nut
Square Washer
Unit: mm
Unit: mm

8
4.3.2 Suspension Bolt and Pipe
Connection Points
(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.
a (Suspension Bolt Size)
d (Suspension Bolt Size)
Top View
Indoor Unit Capacity (HP)
Unit: mm
0.8~1.5
1.8~2.5
3.0~4.0
5.0~6.0
Fig. 4.3 Suspension Bolt
4.3.3 Installation of Indoor Unit
Indoor unit is installed as shown in Fig. 4.4.
Installation of Field-Supplied Parts
Suspension Bolt
Nut
Washer
4-M10 or W3/8
8-M10 or W3/8
8-M10 or W3/8
Suspension Bolt (4-M10 or W3/8)
(Field-Supplied)
Nut and Washer
(4-M10 or W3/8)
(Field-Supplied)
Support
Leg
Fig. 4.4 Installation of Indoor Unit
(1) How to Install Suspension Bolt and Nut
Mount nuts to the four bolts as shown in Fig. 4.5.
Nut
Indoor Unit
Approx. 50mm
Washer
Nut
Fig. 4.5 Suspension Bolts and Nuts
e
f
606
856
1047
1347
582
832
1036
1336

9
(2) Installation of 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.)
Support Leg
Nut and Washer
Suspension Bolt
Support Leg
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 locking
agent to avoid nut looseness.
Please cover the machine with plastic cloth during
installation so as to keep it clean.
4.3.5 Air Duct Connection
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>
Canvas Air Duct Canvas Air Duct Plenum Chamber
Volume Damper
Plenum Chamber
Outside Air
Service Access Return Air Inlet
(For Fine Adjustment)
Air Outlet Level
Thermal Insulation Material
Volume Damper
Outside Air that Passes Filter
Screen
(With Filter Screen)
Schedule of External Static Pressure
Factory default
Fig. 4.8 Air Duct Connection
10A
(3) Select copper pipes based on Fig. 5.2.
Model
RPIH-3.0~6.0HNAUN1Q
RPIM-0.8~2.5HNAUN1Q
RPIL-0.8~2.5HNAUN1Q
RPIL-3.0~6.0HNAUN1Q
External Static Pressure(Pa)
120(*)/90
50(*)/80
30
60
air-tightness

(N.m)
6.35
9.53
15.88
19.05
20
40
80
100
12.7 60
(mm)
10
5.2 Piping Connection
(1) Piping connection points are shown in Figs.
5.1 and 5.2.
Models 0.8~2.5
Refrigerant Liquid Tube
Refrigerant Gas Tube Drain Pipe
For Drain Pump
Drain Pipe
Models 3.0~6.0
Refrigerant Gas Tube
Refrigerant Liquid Tube
Drain Pipe
For Drain Pump
Drain Pipe
Fig. 5.1 Piping Connection Points
Note: A drain pump can be optionally ordered for these
models. The drain pipe is located as shown in Fig. 5.1 when
a pump is purchased. The drain hole at lower part is blocked
off with a rubber stopper.
5
5
55
Indoor Unit Capacity Gas Pipe Liquid Pipe
0.8~1.5
1.8~2.0
2.3~3.3
Fig. 5.2 Pipe Size
4.0~6.0
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)
Pipe Diameter (a)
Flaring
Diameter
(D)
,
Fig. 5.3 Flaring
2As shown in Fig. 5.4, two spanners shall be used for
tightening the nut.
Fig. 5.4 Nut Tightening Torque
Insulate the refrigeration piping with field-supplied
insulating pipe as shown in Fig. 5.5 upon
completion of refrigerant pipe connection.
Wire Tie (Option) Insulating Pipe (Option)
(Indoor Unit
Side)
Refrigeration Piping
(Preparation for Field
Installation)
Insulating Pipe
(Preparation for Field
Installation)
Fig. 5.5 Thermal Insulation of Pipes
Thermal Insulation
Material (Option)

11
Excessive and inadequate refrigerant is a
leading cause of system anomaly. Please
inject the right amount of refrigerant.
6. Drain Pipe
(1) See Fig. 6.1 for connection point of drain
pipe.
(2) Find a PVC pipe with an outside diameter of
32mm.
(3) Fix the PVC pipe to drain pipe through
adhesive and factory-supplied clamp. The
downward inclination of drain pipe is
1/25~1/100.
(4) Make thermal insulation after the proper
connection of drain pipe.
(When a drain pump is ordered)
Pipe Support
(Field Supplied)
90º Bend (VP25)
(Field Supplied)
Drain Lift Pipe (PVC Pipe, VP25)
(Field Supplied)
Indoor Unit Drain Pipe (L300)
(Accessory)
Water Pan
Drain Pump
Rubber Stopper
(Accessory)
Drain Pipe (PVC Pipe, VP25)
(Field Supplied)
1/25~1/100 Downward Inclination
(Lift)
(When no drain pump is ordered)
Electric Box
1/25~1/100 Downward Inclination
Thermal Insulation Material
(Field Supplied)
Drain Pipe
Thermal Insulation Material
Adhesive (Seal)
Pipe Clamp
PVC Pipe (Field Supplied)
Incorrect: Slope Up
Indoor Unit Elevated Portion
Incorrect
1/25~1/100 Downward Inclination
Connecting Drain Pipe
Shared Drain Pipe
Drain pipes shall be separated from other pipes
Correct
Fig. 6.1 Drain Pipe
Where the relative humidity of air inlet or
ambient air exceeds 80%, an auxiliary drain pan
shall be fabricated at installation site and placed
under the indoor unit, as shown in Fig. 6.2.
Indoor Unit
Auxiliary Water Pan
(Field Supplied)
Drain Outlet
Fig. 6.2 Water pan
(1)
(2)
(3)
(4)
a.
b.
C
.
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.
The drain pipe shall not be connected with sewage
pipe or other drain pipes.
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.
Check if water flows without obstruction following
the procedure shown below after the proper
connection of wires and drain pipes.
Power on.
Fill the water pan with 2L or 2.5L of water.
Check and ensure the water flows without
obstruction and no leakage exists. Pour 2L of
water if no water flows out of pipe end.

12
Wire Clamp
●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.
●Wrap the accessory packing around the wires,
and plug the wiring connection hole with the
seal material to protect the product from any
condensate water or insects.
●Secure the cable of the remote control switch
using the cord clamp inside the electrical box.
●Tighten screws according to the following
torque.
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
Check the capacity of power source. The
system can't be started if the supply
voltage is excessively low.
7.1.
Use cord clamps to fasten the wires in
electric box.
Seal the finished wiring connection with
sealing material (with cover board).
Upon completion of wiring connection, seal
the wire interface with sealing material to
keep condensate water and insects off.
Controller Wire
Communication Wire
Fig. 7.1 Wiring Connection
LN
BA2 1
TB2
PCN2
PCN6 PCN18
TB1
N
FSCN7CN3 CN11 CN25THM1 THM2 THM3 THM5
TP
EMULATOR
THU1
Wire Clamp
Power Supply Wire
●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.

Indoor Unit
220-240V ~ 50Hz
13
7.3 Static Pressure Selection Wiring
*: Factory default
The plug printed with number "1" before delivery of
above-noted indoor unit is inserted into the socket. To
change the static pressure, insert the plug printed
with number "2". See Fig. 7.3.
Printed with Number "2"
Printed with Number "1"
Socket
Motor line
Fig. 7.3 Switching of External Static Pressure AC CONTACTOR.
Capacity of Fuse
on Indoor Unit
Control Circuit
Temperature Control
on Fan Motor of
Indoor Unit
Cut-out
Cut-in
Cut-out
Cut-in
Freeze Protection
Temperature
Set Temperature Difference
RPIM-0.8~2.5HNAUN1Q
RPIH-3.0~6.0HNAUN1Q
Static Pressure (Pa)
Plug Wording
Static Pressure (Pa)
Plug Wording
this
RPIL-0.8~2.0
HNAUN1Q
RPIL-2.3~2.5
HNAUN1Q
RPIL-3.0~4.0
HNAUN1Q
RPIL-5.0
HNAUN1Q
RPIL-6.0
HNAUN1Q
135±5
90±15
130±5
90±15
150±5
105±15
150±5
100±15
150±5
105±15
Indoor Unit
220-240V ~ 50Hz
Capacity of Fuse
on Indoor Unit
Control Circuit
Temperature Control
on Fan Motor of
Indoor Unit
Cut-out
Cut-in
Cut-out
Cut-in
Freeze Protection
Temperature
Set Temperature Difference
RPIM-0.8~1.0
HNAUN1Q
RPIM-1.3~2.0
HNAUN1Q
RPIM-2.3~2.5
HNAUN1Q
RPIH-3.0~5.0
HNAUN1Q
RPIH-6.0
HNAUN1Q
150±5
105±15
130±5
85±15
130±5
90±15
150±5
100±15
150±5
85±15