Hitachi RPK-0.8HNBUSQ User manual

Models
• Wall Type
RPK-0.8HNBUSQ
RPK-1.0HNBUSQ
RPK-1.3HNBUSQ
RPK-1.5HNBUSQ
RPK-1.8HNBUSQ
RPK-2.0HNBUSQ
RPK-2.3HNBUSQ
RPK-2.5HNBUSQ
TCY22021001A Date: 4.2021
Technical Data for Indoor Unit
HITACHI
AIR CONDITIONERS
- INDOOR UNIT -

I
IMPORTANT NOTICE
●HITACHI pursues a policy of continuing improvement in design and performance of products. The right is therefore
reserved to vary specications without notice.
●HITACHI cannot anticipate every possible circumstance that might involve a potential hazard.
●This heat pump air conditioner is designed for standard air conditioning only. Do not use this heat pump air conditioner
for other purposes such as drying clothes, refrigerating foods or for any other cooling or heating process.
●The installer and system specialist shall secure safety against leakage according to local regulations or standards. The
following standards may be applicable, if local regulations are not available.
International Organization for Standardization, ISO5149 or European Standard, EN378 or Japan Standard, KHKS0010.
● No part of this manual may be reproduced without written permission.
● The following words (DANGER, WARNING and CAUTION) are used to identify levels of hazard seriousness. Denitions
for identifying hazard levels are provided below with their respective signal words.
: Immediate hazards which WILL result in severe personal injury or death.
: Hazards or unsafe practices which COULD result in severe personal injury
or death.
: Hazards or unsafe practices which COULD result in minor personal injury or
product or property damage.
: Useful information for operation and/or maintenance.
● It is assumed that this heat pump air conditioner will be operated and serviced by English speaking people.
If this is not the case, the customer should add safety, caution and operating signs in the native language.
●If you have any questions, contact your distributor or dealer of HITACHI.
● This manual gives a common description and information for this heat pump air conditioner which you operate as well as
for other models.
This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air
conditioning equipment.

II
SAFETY SUMMARY
● Use the specied non-ammable refrigerant to the outdoor unit in the refrigerant cycle. Do not charge material other than
specied refrigerant into the unit such as hydrocarbon refrigerants (propane or etc.), oxygen, ammable gases (acetylene
or etc.) or poisonous gases when installing, maintaining and moving. These ammables are extremely dangerous and
may cause an explosion, a re, and injury.
● Do not pour water into the indoor or outdoor unit. These products are equipped with electrical parts. If poured, it will
cause a serious electrical shock.
● Do not touch or adjust safety devices inside the indoor or outdoor units. If these devices are touched or readjusted, it
may cause a serious accident.
● Do not open the service cover or access panel for the indoor or outdoor units without turning OFF the main power
supply.
● Refrigerant leakage can cause di󰀩culty with breathing due to insu󰀩cient air. Turn OFF the main switch, extinguish any
naked ames and contact your service contractor, if refrigerant leakage occurs.
●The installer and system specialist shall secure safety against refrigerant leakage according to local regulations or
standards.
● Use an ELB (Electric Leakage Breaker). In the event of a fault, there is danger of an electric shock or a re if it is not
used.
● Do not install the outdoor unit where there is a high level of oil mist, ammable gases, salty air or harmful gases such as
sulphur.
● Do not use any sprays such as insecticide, lacquer, hair spray or other ammable gases within approximately one (1)
meter from the system.
●If circuit breaker or fuse is often activated, stop the system and contact your service contractor.
● Do not perform installation work, refrigerant piping work, drain piping and electrical wiring connection without referring to
our installation manual. If the instructions are not followed, it may result in a water leakage, electric shock or a re.
● Check that the ground wire is securely connected. If the unit is not correctly grounded, it lead electric shock. Do not
connect the ground wiring to gas piping, water piping, lightning conductor or ground wiring for telephone.
● Connect a fuse of specied capacity.
●Do not put any foreign material on the unit or inside the unit.
● Make sure that the outdoor unit is not covered with snow or ice, before operation.
● Before performing any brazing work, check to ensure that there is no ammable material
●around.
When using refrigerant be sure to wear leather gloves to prevent cold injuries.
● Protect the wires, electrical parts, etc. from rats or other small animals.
If not protected, rats may gnaw at unprotected parts and which may lead to a re.
● Fix the cables securely. External forces on the terminals could lead to a re.

III
SAFETY SUMMARY
● 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.
● Supply electrical power to the system to energize the oil heater for 12 hours before startup after a long shutdown.
●Do not step or put any material on the product.
●Provide a strong and correct foundation so that;
a. The outdoor unit is not on an incline.
b. Abnormal sound does not occur.
c. The outdoor unit will not fall down due to a strong wind or earthquake.
NOTES:
●It is recommended that the room be ventilated every 3 to 4 hours.
●The heating capacity of the heat pump unit is decreased according to the outdoor air temperature. Therefore, it is
recommended that auxiliary heating equipment be used in the eld when the unit is installed in a low temperature region.

IV
CONTENT
1. Product Features of new High Wall Indoor Unit 1
1.1 Stylish design with good sense of aesthetic. 1
1.2 Optimized cabinet and refrigerant distribution for low noise. 1
1.3 Compact design for ease of installation or maintenance 1
1.4 Convenient control with wireless/wired operation 1
2. Working Range 2
3. Necessary Tools 3
4. Transportation and Handling 3
4.1 Transportation 3
4.2 Handling 3
5. Precautions during Installation 3
6. General Data 4
7. Dimensional Data 6
8. Selection Data 9
9. Component Data 12
10. Refrigerant Cycle 13
11. Electrical Data 14
12. Electrical Wiring Diagram 15
13. Optional Parts 16
14. Factory-Supplied Accessories 17
15. Installation 18
15.1 Initial Check 18
15.2 Installation 19
15.3 Mounting the Indoor Units 21
15.4 Removing Flat Panel 21
15.5 Install Flat Panel 22
16. Refrigerant Piping Work 23
16.1 Piping Materials 23
16.2 Piping Connection 23
17. Drain Piping 24
18. Electrical Wiring 25
18.1 General Check 26
18.2 Electrical Wiring Connection 26
19. Test Run 28
20. Common 28
20.1 Field Minimum Wire Sizes for Power Supply 28
20.2 Setting of Dip Switches 29
20.3 Setting the Filter Indication Interval 30

1
Product Features of new High Wall Indoor Unit
1. Product Features of new High Wall Indoor Unit
1.1 Stylish design with good sense of aesthetic.
●Simple and clear design of new panel for matching with any interior.
●LED temperature and operation mode display on front panel helps
improve user experience and sense of aesthetic, and user can see
the setting temperature easily.
1.2 Optimized cabinet and refrigerant distribution for low noise.
●Thanks to the active noise reducing technology, a max. 5dB noise is lowered
compare with the last generation.
●DC fan motor help realizes 6-step fan speed adjustment, more quiet and
e󰀩cient.
1.3 Compact design for ease of installation or
maintenance
● The unit has been designed with a at front panel and a slim
body. The front panel is easy to clean and should remain
relatively dust free.
●For 0.8 to1.3HP units, compact design unit with 815mm
width. For 1.5 to 1.8HP units, unit width is 915mm. For 2.0
to 2.5HP units, unit width is 1085mm. which can be installed
even at the narrow space among posts in the room. This
compact design allows for exible and neat installation or
maintenance work.
1.4 Convenient control with wireless/wired operation
●When each unit is controlled with the remote control switch,
wireless remote control operation is available by the built-in
receiver kit. Wired remote control operation is also available to
change instead of wireless operation.
●Signal receiving buzzer and indication lamp inform the wireless
remote control switch operation.

2
Working Range
2. Working Range
Power Supply
Working Voltage: 90% to 110% of the Rated Voltage
Voltage Imbalance: Within a 3% Deviation from Each Voltage at the Main Terminal of Outdoor Unit
Starting Voltage: Higher than 85% of the Rated Voltage
Temperature Range
The temperature ranges are given in the following table Operate within this range.
°C
Maximum Minimum
Cooling Operation Indoor 32 DB/23 WB 21 DB/15 WB
Outdoor 43 DB * -5 DB *
Heating Operation Indoor 27 DB 15 DB
Outdoor 23 DB/17WB * -20 DB/-21 WB *
DB: Dry Bulb, WB: Wet Bulb
*: The temperature may change depending on the outdoor units.

3
Necessary Tools
3. Necessary Tools
Necessary Tools and Instrument List for Installation
No. Tool No. Tool
1 Handsaw 11 Spanner
2 Screwdriver 12 Charging Cylinder
3 Vacuum Pump 13 Gauge Manifold
4 Refrigerant Gas Hose 14 Cutter for Wires
5 Megohmmeter 15 Gas Leak Detector
6 Copper Pipe Bender 16 Spirit level
7 Manual Water Pump 17 Clamper for Solderless
Terminals
8 Pipe Cutter 18 Hoist（for Indoor Unit)
9 Brazing Kit 19 Ammeter
10 Hexagon Wrench 20 Voltage Meter
NOTE
Please use tools or devices exclusively for R410A when contacting with R410A is inevitable.
Do not mix with other refrigerants.
4. Transportation and Handling
4.1 Transportation
Transport the product as close to the installation location
as practical before unpacking.
Do not put any materials on the product.
4.2 Handling
Do not put any foreign matters into the indoor unit and
check to ensure that none exists in the indoor unit before
installation and test run. Otherwise, it may lead to a re or
failure, etc.
Be careful not to damage on insulation materials on unit
surface when lifting.
5. Precautions during Installation
Do not install the indoor unit in a ammable environment to
avoid a re or explosion.
●Check to ensure that the ceiling slab is strong enough.
Otherwise, the indoor unit may fall down.
●Do not install the indoor unit outdoors. Otherwise, an
electric hazard or electric leakage will occur.
It is recommended that indoor units be installed at least
2.5 meters above the oor level.
●Please make sure the accessories are shipped along
with the indoor unit. If not, please contact the distributer.

4
General Data
6. General Data
Indoor Unit Type Wall Type
Model RPK-0.8HNBUSQ RPK-1.0HNBUSQ RPK-1.3HNBUSQ RPK-1.5HNBUSQ
Indoor Unit Power supply 
Nominal Cooling Capacity kW    
    
Nominal Heating Capacity kW  3.3  
    
Sound Pressure Level
(Overall A Scale) dB(A)    
Outer Dimensions
 mm    315
 mm 815 815 815 915
 mm    
 kg 9 9 9 
Refrigerant 
Indoor Fan
Air Flow Rate m3  






Connections Refrigerant
Piping -
Liquid Line mm    
Gas Line mm    
Condensate Drain _    
Packaging Dimensions
 mm 375 375 375 
 mm    1013
 mm 310 310 310 330
 m30.11 0.11 0.11 0.15
Standard Accessories Wall Mounting Bracket
NOTES:
1. 
Cooling Operation Conditions
Indoor Air Inlet Temperature: C DB (80°F DB)
19
Outdoor Air Inlet Temperature: 35C DB (95°F DB)
Heating Operation Conditions
Indoor Air Inlet Temperature: 
Outdoor Air Inlet Temperature: 7

 Piping Lift: 0m(0ft.)
 



