Panasonic CS-HZ25WKE User manual

© Panasonic Corporation 2020
Order No: PAPAMY2008020CE
Indoor Unit Outdoor Unit
CS-HZ25WKE
CS-HZ35WKE
CS-HZ25WKE-5
CU-HZ25WKE
CU-HZ35WKE
CU-HZ25WKE-5
Destination
North Europe
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
CAUTION
R32 REFRIGERANT – This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation,
maintenance and/or service of this product.

2
TABLE OF CONTENTS
PAGE PAGE
1.Safety Precautions .............................................3
2.Precaution for Using R32 Refrigerant ..............5
3.Specification .....................................................10
4.Features.............................................................16
5.Location of Controls and Components..........17
5.1Indoor Unit ..................................................17
5.2Outdoor Unit ...............................................17
5.3Remote Control ..........................................17
6.Dimensions .......................................................18
6.1Indoor Unit ..................................................18
6.2Outdoor Unit ...............................................19
7.Refrigeration Cycle Diagram ...........................20
8.Block Diagram ..................................................21
8.1Indoor Power Supply Connection...............21
8.2Outdoor Power Supply Connection............22
9.Wiring Connection Diagram ............................23
9.1Indoor Unit ..................................................23
9.2Outdoor Unit ...............................................24
10.Electronic Circuit Diagram ..............................25
10.1Indoor Unit ..................................................25
10.2Outdoor Unit ...............................................26
11.Printed Circuit Board .......................................27
11.1Indoor Unit ..................................................27
11.2Outdoor Unit ...............................................29
12.Installation Instruction.....................................30
12.1Select the Best Location.............................30
12.2Indoor Unit ..................................................31
12.3Outdoor Unit ...............................................37
13.Installation and Servicing Air Conditioner
using R32 ..........................................................44
13.1About R32 Refrigerant................................44
13.2Characteristics of R32 Refrigerant .............44
13.3Refrigerant piping installation • Tools used in
services ......................................................46
13.4New installation, Relocation, Repairing of
Refrigerant Cycle System The Procedures....
....................................................................50
13.5Piping installation of R32............................51
13.6Installation, Relocation, and Service ..........52
13.7Repairing of refrigerant cycle / Brazing point .
....................................................................56
13.8<Reference> Analysis method for no error
code, no cooling / no warming....................62
14.Operation Control.............................................64
14.1Basic Function ............................................64
14.2Indoor Fan Motor Operation .......................65
14.3Outdoor Fan Motor Operation ....................66
14.4Airflow Direction..........................................67
14.5Quiet Operation (Cooling Mode/Cooling Area
of Dry Mode)...............................................68
14.6Quiet Operation (Heating) ..........................69
14.7Powerful Mode Operation...........................69
14.8Timer Control..............................................69
14.9Auto Restart Control...................................70
14.10Indication Panel ..........................................70
14.11+8/15°C Heat Operation .............................71
14.12nanoe™X Operation ...................................72
14.13Wireless LAN Control .................................74
15.Protection Control............................................77
15.1Protection Control for All Operations..........77
15.2Protection Control for Cooling & Soft Dry
Operation....................................................79
15.3Protection Control for Heating Operation ...80
16.Servicing Mode .................................................81
16.1Auto OFF/ON Button ..................................81
16.2Heat Only Operation...................................82
16.3Remote Control Button...............................83
17.Troubleshooting Guide....................................92
17.1Refrigeration Cycle System........................92
17.2Breakdown Self Diagnosis Function...........94
17.3Error Code Table ........................................95
17.4Self-diagnosis Method................................97
18.Disassembly and Assembly Instructions ... 125
18.1Indoor Unit ............................................... 125
18.2Outdoor Electronic Controller Removal
Procedure ................................................ 131
18.3To Set Panasonic Comfort Cloud App. After
Replace Main Printed Circuit Board and
Wireless LAN Module .............................. 132
19.Technical Data ............................................... 144
19.1Cool Mode Performance Data................. 144
19.2Heat Mode Performance Data................. 145
20.Service Data ................................................... 146
20.1Cool Mode Outdoor Air Temperature
Characteristic........................................... 146
20.2Heat Mode Outdoor Air Temperature
Characteristic........................................... 148
20.3Piping Length Correction Factor.............. 150
21.Exploded View and Replacement Parts List......
......................................................................... 151
21.1Indoor Unit ............................................... 151
21.2Outdoor Unit ............................................ 154
Specifications, designs and contents in this Service Manual are subject to change without notice.

3
1. Safety Precautions
Read the following “SAFETY PRECAUTIONS” carefully before installation.
Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and
main circuit for the model to be installed.
The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause
harm or damage, and the seriousness is classified by the following indications.
WARNING This indication shows the possibility of causing death or serious injury.
CAUTION This indication shows the possibility of causing injury or damage to properties only.
The items to be followed are classified by the symbols:
Symbol with white background denotes item that is PROHIBITED.
Symbol with dark background denotes item that must be carried out.
Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the
operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating
instructions for future reference.
WARNING
1. Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Any
unfit method or using incompatible material may cause product damage, burst and serious injury.
2. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child
may climb up to outdoor unit and cross over the handrail causing an accident.
3. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet
with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
4. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.
5. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
6. Do not sit or step on the unit, you may fall down accidentally.
7. Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
8.
When installing or relocating air conditioner, do not let any substance other than the specified refrigerant, eg. air etc mix into
refrigeration cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion,
injury etc.
9. Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, flame, sparks, or other sources of
ignition. Else, it may explode and cause injury or death.
10. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
11.
For R32 model, use piping, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut
and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.
Thickness for copper pipes used with R32 must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.
It is desirable that the amount of residual oil less than 40 mg/10 m.
12. Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage,
electrical shock or fire.
13. For refrigeration system work, Install according to this installation instructions strictly. If installation is defective, it will cause
water leakage, electrical shock or fire.
14. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire
or electrical shock.
15. Install at a strong and firm location which is able to withstand weight of the set. If the strength is not enough or installation is not
properly done, the set will drop and cause injury.
16.
For electrical work, follow the national regulation, legistration and this installation instructions. An independent circuit and single
outlet must be used. If electrical circuit capacity is not enough or defect found in the electrical work, it will cause electrical shock
or fire.
17.
Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to
instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable
so that no external force will have impact on the terminal. If connection or fixing is not perfect, it will cause heat up or fire at the
connection.

4
WARNING
18. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly,
it will cause fire or electrical shock.
19.
This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device
(RCD), with sensitivity of 30mA at 0.1sec or less. Otherwise, it may cause electrical shock and fire in case of equipment
breakdown or insulation breakdown.
20.
During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without fixing
refrigeration piping and valves at opened position will cause suck-in of air, abnormal high pressure in refrigeration cycle and
result in explosion, injury etc.
21.
During pump down operation, stop the compressor before removing the refrigeration piping. Removal of refrigeration piping
while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and
result in explosion, injury etc.
22. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the
flare may break and cause refrigerant gas leakage.
23. After completion of installation, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant
contacts with fire.
24. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.
25. Be aware that refrigerants may not contain an odour.
26. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and
telephone. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.
CAUTION
1. Do not install the unit in a place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding
of the unit, it may cause fire.
2. Prevent liquid or vapor from entering sumps or sewers since vapor is heavier than air and may form suffocating atmospheres.
3. Do not release refrigerant during piping work for installation, re-installation and during repairing refrigeration parts. Take care of
the liquid refrigerant, it may cause frostbite.
4. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
5. Do not touch the sharp aluminium fin, sharp parts may cause injury.
6. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and
damage the furniture.
7. Select an installation location which is easy for maintenance. Incorrect installation, service or repair of this air conditioner may
increase the risk of rupture and this may result in loss damage or injury and/or property.
8.
Power supply connection to the room air conditioner.
Use power supply cord 3 × 1.5 mm2type designation 60245 IEC 57 or heavier cord.
Connect the power supply cord of the air conditioner to the mains using one of the following method.
Power supply point should be in easily accessible place for power disconnection in case of emergency.
In some countries, permanent connection of this air conditioner to the power supply is prohibited.
1) Power supply connection to the receptacle using power plug.
Use an approved 15/16A power plug with earth pin for the connection to the socket.
2) Power supply connection to a circuit breaker for the permanent connection.
Use an approved 16A circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm
contact gap.
9. Installation work.
It may need two people to carry out the installation work.
10. Keep any required ventilation openings clear of obstruction.

5
2. Precaution for Using R32 Refrigerant
Pay careful attention to the following precaution points and the installation work procedures:
WARNING
1.
When connecting flare at indoor side, make sure that the flare connection is used only once, if torqued up and released, the flare must
be remade. Once the flare connection was torqued up correctly and leak test was made, thoroughly clean and dry the surface to
remove oil, dirt and grease by following instructions of silicone sealant. Apply neutral cure (Alkoxy type) & ammonia-free silicone
sealant that is non-corrosive to copper & brass to the external of the flared connection to prevent the ingress of moisture on both the
gas & liquid sides. (Moisture may cause freezing and premature failure of the connection)
2.
The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than Amin (m2) [refer Table
A] and without any continuously operating ignition source. Keep away from open flames, any operating gas appliances or any
operating electric heater. Else, it may explode and cause injury or death.
3.
The mixing of different refrigerants within a system is prohibited. Models that use refrigerant R32 and R410A have a different charging
port thread diameter to prevent erroneous charging with refrigerant R22 and for safety.
Therefo
r
e, check beforehand. [The charging port thread diameter for R32 and R410A is 12.7 mm (1/2 inch).]
4. Ensure that foreign matter (oil, water, etc.) does not enter the piping.
Also, when storing the piping, securely seal the opening by pinching, taping, etc. (Handling of R32 is similar to R410A.)
5.
Operation, maintenance, repairing and refrigerant recovery should be carried out by trained and certified personnel in the use of
flammable refrigerants and as recommended by the manufacturer. Any personnel conducting an operation, servicing or maintenance
on a system or associated parts of the equipment should be trained and certified.
6. Any part of refrigerating circuit (evaporators, air coolers, AHU, condensers or liquid receivers) or piping should not be located in the
proximity of heat sources, open flames, operating gas appliance or an operating electric heater.
7. The user/owner or their authorized representative shall regularly check the alarms, mechanical ventilation and detectors, at least once
a year, where as required by national regulations, to ensure their correct functioning.
8. A logbook shall be maintained. The results of these checks shall be recorded in the logbook.
9. In case of ventilations in occupied spaces shall be checked to confirm no obstruction.
10.
Before a new refrigerating system is put into service, the person responsible for placing the system in operation should ensure that
trained and certified operating personnel are instructed on the basis of the instruction manual about the construction, supervision,
operation and maintenance of the refrigerating system, as well as the safety measures to be observed, and the properties and
handling of the refrigerant used.
11.
The general requirement of trained and certified personnel are indicated as below:
a) Knowledge of legislation, regulations and standards relating to flammable refrigerants; and,
b) Detailed knowledge of and skills in handling flammable refrigerants, personal protective equipment, refrigerant leakage prevention,
handling of cylinders, charging, leak detection, recovery and disposal; and,
c) Able to understand and to apply in practice the requirements in the national legislation, regulations and Standards; and,
d) Continuously undergo regular and furthe
r
training to maintain this expertise.
12. Air-conditioner piping in the occupied space shall be installed in such a way to protect against accidental damage in operation and
service.
13. Precautions shall be taken to avoid excessive vibration or pulsation to refrigerating piping.
14. Ensure protection devices, refrigerating piping and fittings are well protected against adverse environmental effects (such as the
danger of water collecting and freezing in relief pipes or the accumulation of di
r
t and debris).
15. Expansion and contraction of long runs piping in refrigerating systems shall be designed and installed securely (mounted and
guarded) to minimize the likelihood hydraulic shock damaging the system.
16. Protect the refrigerating system from accidental rupture due to moving furniture or reconstruction activities.
17.
To ensure no leaking, field-made refrigerant joints indoors shall be tightness tested. The test method shall have a sensitivity of 5
grams per year of refrigerant or better under a pressure of at least 0,25 times the maximum allowable pressure (>1.04MPa, max
4.15MPa). No leak shall be detected.

6
CAUTION
1.
General
Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.
Must ensure that pipe-work shall be protected from physical damage.
Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all
applicable regulations.
Must ensure mechanical connections be accessible for maintenance purposes.
In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
When disposal of the product, do follow to the precautions in #12 and comply with national regulations.
In case of field charge, the effect on refrigerant charge caused by the different pipe length has to be quantified, measured and
labeled.
Always contact to local municipal offices for proper handling.
Ensure the actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are
installed.
Ensure refrigerant charge not to leak.
Wear appropriate protective equipment, including respiratory protection, as conditions warrant.
Keep all sources of ignition and hot metal surfaces away.
2.
Servicing
2-1. Qualification of workers
Any qualified person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate
from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance
with an industry recognised assessment specification.
Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable
refrigerants.
Servicing shall be performed only as recommended by the manufacturer.
The system is inspected, regularly supervised and maintained by a trained and certified service personnel who is employed by
the person user or party responsible.
2-2. Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimised.
For repair to the refrigerating system, the precautions in #2-3 to #2-7 must be followed before conducting work on the system.
2-3. Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapour being present
while the work is being performed.
2-4. General work area
All maintenance staff and others working in the local area shall be instructed and supervised on the nature of work being carried
out.
Avoid working in confined spaces. Always ensure away from source, at least 2 meter of safety distance, or zoning of free space
area of at least 2 meter in radius.
2-5. Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of
potentially flammable atmospheres.
Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non sparking, adequately
sealed or intrinsically safe.
In case of leakage/spillage happened, immediately ventilate area and stay upwind and away from spill/release.
In case of leakage/spillage happened, do notify persons down wind of the leaking/spill, isolate immediate hazard area and keep
unauthorized personnel out.
2-6. Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing
equipment shall be available at hand.
Have a dry powder or CO2fire extinguisher adjacent to the charging area.
2-7. No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has
contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
He/She must not be smoking when carrying out such work.
All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation,
repairing, removing and disposal, during which flammable refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or
ignition risks.
“No Smoking” signs shall be displayed.

7
CAUTION
2.
2-8. Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.
A degree of ventilation shall continue during the period that the work is carried out.
The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
2-9. Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
At all times the manufacturer’s maintenance and service guidelines shall be followed.
If in doubt consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants.
- The actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed.
- The ventilation machinery and outlets are operating adequately and are not obstructed.
- If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
- Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.
- Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which
may corrode refrigerant containing components, unless the components are constructed of materials which are inherently
resistant to being corroded or are properly protected against being so corroded.
2-10. Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.
Initial safety checks shall include but not limit to:-
- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
- That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
- That there is continuity of earth bonding.
At all times the manufacturer’s maintenance and service guidelines shall be followed.
If in doubt consult the manufacturer’s technical department for assistance.
If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily
dealt with.
If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be
used.
The owner of the equipment must be informed or reported so all parties are advised thereinafter.
3.
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to
any removal of sealed covers, etc.
If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak
detection shall be located at the most critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in
such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections,
terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of
flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer’s specifications.
NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment.
Intrinsically safe components do not have to be isolated prior to working on them.
4.
Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible
voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
The test apparatus shall be at the correct rating.
Replace components only with parts specified by the manufacturer. Unspecified parts by manufacturer may result ignition of
refrigerant in the atmosphere from a leak.
5.
Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse
environmental effects.
The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

8
CAUTION
6.
Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the searching or detection of refrigerant leaks.
A halide torch (or any other detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for all refrigerant systems.
-No leaks shall be detected when using detection equipment with a sensitivity of 5 grams per year of refrigerant or better
under a pressure of at least 0,25 times the maximum allowable pressure (>1.04MPa, max 4.15MPa) for example, a
universal sniffer.
-Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may
need re-calibration.
(Detection equipment shall be calibrated in a refrigerant-free area.)
-Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
-Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant
employed and the appropriate percentage of gas (25 % maximum) is confirmed.
-Leak detection fluids are suitable for use with most refrigerants, for example, bubble method and fluorescent method
agents. The use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and
corrode the copper pipe-work.
-If a leak is suspected, all naked flames shall be removed/extinguished.
-If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or
isolated (by means of shut off valves) in a part of the system remote from the leak. The precautions in #7 must be followed
to remove the refrigerant.
7.
Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used.
However, it is important that best practice is followed since flammability is a consideration.
The following procedure shall be adhered to:
●remove refrigerant -> ●purge the circuit with inert gas -> ●evacuate -> ●purge with inert gas ->
●open the circuit by cutting or brazing
The refrigerant charge shall be recovered into the correct recovery cylinders.
The system shall be purged with OFN to render the appliance safe. (remark: OFN = oxygen free nitrogen, type of inert gas)
This process may need to be repeated several times.
Compressed air or oxygen shall not be used for this task.
Purging shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is
achieved, then venting to atmosphere, and finally pulling down to a vacuum.
This process shall be repeated until no refrigerant is within the system.
When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
This operation is absolutely vital if brazing operations on the pipe work are to take place.
Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and there is ventilation available.
8.
Charging procedures
In addition to conventional charging procedures, the following requirements shall be followed.
- Ensure that contamination of different refrigerants does not occur when using charging equipment.
- Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
- Cylinders shall be kept in an appropriate position according to the instruction.
- Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
- Label the system when charging is complete (if not already).
- Extreme care shall be taken not to over fill the refrigeration system.
Prior to recharging the system it shall be pressure tested with OFN (refer to #7).
The system shall be leak tested on completion of charging but prior to commissioning.
A follow up leak test shall be carried out prior to leaving the site.
Electrostatic charge may accumulate and create a hazardous condition when charging and discharging the refrigerant.
To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before
charging/discharging.

9
CAUTION
9.
Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details.
It is recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of
recovered refrigerant.
It is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:
mechanical handling equipment is available, if required, for handling refrigerant cylinders;
all personal protective equipment is available and being used correctly;
the recovery process is supervised at all times by a competent person;
recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer’s instructions.
h) Do not over fill cylinders. (No more than 80 % volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are
removed from site promptly and all isolation valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
Electrostatic charge may accumulate and create a hazardous condition when charging or discharging the refrigerant.
To avoid fire or explosion, dissipate static electricity during transfer by grounding and bonding containers and equipment before
charging/discharging.
10.
Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.
The label shall be dated and signed.
Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
11.
Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all
refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge are available.
All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the
recovery of refrigerant).
Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.
Recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall
be suitable for the recovery of concerning the equipment that is at hand and shall be suitable for the recovery of flammable
refrigerants.
In addition, a set of calibrated weighing scales shall be available and in good working order.
Hoses shall be complete with leak-free disconnect couplings and in good condition.
Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any
associated electrical components are sealed to prevent ignition in the event of a refrigerant release.
Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste
Transfer Note arranged.
Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain
that flammable refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior to returning the compressor to the suppliers.
Only electric heating to the compressor body shall be employed to accelerate this process.
When oil is drained from a system, it shall be carried out safely.

10
3. Specification
Model Indoor CS-HZ25WKE / CS-HZ25WKE-5
Outdoor CU-HZ25WKE / CU-HZ25WKE-5
Performance Test Condition EUROVENT
Power Supply Phase, Hz Single, 50
V 230
Min. Mid. Max.
Cooling
Capacity
kW 0.85 2.50 3.00
BTU/h 2900 8530 10200
kcal/h 730 2150 2580
Running Current A – 2.20 –
Input Power W 170 455 670
Annual Consumption kWh – 228 –
EER
W/W 5.00 5.49 4.48
BTU/hW 17.06 18.75 15.22
kcal/hW 4.29 4.73 3.85
ErP
Pdesign kW 2.5
SEER (W/W) 7.8
Annual Consumption kWh 112
Class A++
Power Factor % – 90 –
Indoor Noise (H / L / QLo) dB-A 44 / 25 / 20
Power Level dB 60 / - / -
Outdoor Noise (H / L / QLo) dB-A 46 / - / 43
Power Level dB 61 / - / -
Heating
Capacity
kW 0.85 3.20 7.40
BTU/h 2900 10900 25200
kcal/h 730 2750 6360
Running Current A – 2.70 –
Input Power W 165 570 2.10k
COP
W/W 5.15 5.61 3.52
BTU/hW 17.58 19.12 12.00
kcal/hW 4.42 4.82 3.03
ErP
Pdesign kW 3.0
Tbivalent °C -10
SCOP (W/W) 5.2
Annual Consumption kWh 808
Class A+++
Power Factor % – 92 –
Indoor Noise (H / L / QLo) dB-A 45 / 24 / 18
Power Level dB 61 / - / -
Outdoor Noise (H / L / QLo) dB-A 47 / - / 44
Power Level dB 62 / - / -
Low Temp. : Capacity (kW) / I.Power (W) / COP 5.36 / 1.85k / 2.90
Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 4.75 / 1.88k / 2.53
Max Current (A) / Max Input Power (W) 9.3 / 2.10k
Starting Current (A) 2.70
Compressor
Type Hermetic Motor (Rotary)
Motor Type Brushless (4 poles)
Output Power W 900

11
Model Indoor CS-HZ25WKE / CS-HZ25WKE-5
Outdoor CU-HZ25WKE / CU-HZ25WKE-5
Indoor Fan
Type Cross-Flow Fan
Material ASG33
Motor Type DC / Transistor (8-poles)
Input Power W 47.3
Output Power W 40
Speed
QLo Cool rpm 540
Heat rpm 550
Lo Cool rpm 640
Heat rpm 700
Me Cool rpm 920
Heat rpm 1000
Hi Cool rpm 1200
Heat rpm 1300
SHi Cool rpm 1270
Heat rpm 1370
Outdoor Fan
Type Propeller Fan
Material PP
Motor Type DC Motor (8-poles)
Input Power W –
Output Power W 40
Speed Hi Cool rpm 820
Heat rpm 820
Moisture Removal L/h (Pt/h) 1.5 (3.2)
Indoor Airflow
QLo Cool m3/min (ft3/min) 5.77 (204)
Heat m3/min (ft3/min) 5.90 (208)
Lo Cool m3/min (ft3/min) 7.02 (248)
Heat m3/min (ft3/min) 7.77 (274)
Me Cool m3/min (ft3/min) 10.51 (371)
Heat m3/min (ft3/min) 11.51 (407)
Hi Cool m3/min (ft3/min) 14.00 (495)
Heat m3/min (ft3/min) 15.60 (550)
SHi Cool m3/min (ft3/min) 14.88 (526)
Heat m3/min (ft3/min) 16.13 (570)
Outdoor
Airflow Hi Cool m3/min (ft3/min) 32.70 (1155)
Heat m3/min (ft3/min) 32.70 (1155)
Refrigeration
Cycle
Control Device Expansion Valve
Refrigerant Oil cm3FW50S (450)
Refrigerant Type g (oz) R32, 1.12k (39.5)
F-Gas
GWP 675
PRECHARGED AMOUNT /
MAXIMUM CHARGE AMOUNT CO2eq (ton) 0.76 / 0.92
Dimension
Height (I/D / O/D) mm (inch) 295 (11-5/8) / 622 (24-1/2)
Width (I/D / O/D) mm (inch) 870 (34-9/32) / 824 (32-15/32)
Depth (I/D / O/D) mm (inch) 230 (9-1/16) / 299 (11-25/32)
Weight Net (I/D / O/D) kg (lb) 10 (22) / 36 (79)
Piping
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height different m (ft) 10.0 (32.8)
Additional Gas Amount g/m (oz/ft) 20 (0.2)
Length for Additional Gas m (ft) 7.5 (24.6)

12
Model Indoor CS-HZ25WKE / CS-HZ25WKE-5
Outdoor CU-HZ25WKE / CU-HZ25WKE-5
Drain Hose Inner Diameter mm 16
Length mm 650
Indoor Heat
Exchanger
Fin Material Aluminium (Pre Coat)
Fin Type Slit Fin
Row × Stage × FPI 2 × 17 × 21, Sub Eva × 2 : 1 × 4 × 21
Size (W × H × L) mm 636.5 × 357 × 25.4, Sub Eva × 2 : 636.5 × 73.4 × 12.7
Outdoor Heat
Exchanger
Fin Material Aluminium (Pre Coat) / Aluminium (Blue Fin)
Fin Type Corrugate Fin
Row × Stage × FPI 2 × 28 × 19
Size (W × H × L) mm 36.4 × 588 × 856.3:827.7
Air Filter Material Polypropelene
Type One-touch
Power Supply Indoor / Outdoor
Power Supply Cord A Nil
Thermostat Electronic Control
Protection Device Electronic Control
Dry Bulb Wet Bulb
Indoor
Operation
Range
Cooling Maximum °C (°F) 32 (89.6) 23 (73.4)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Heating Maximum °C (°F) 30 (86.0) –
Minimum °C (°F) 16 (60.8) –
+8/15°C
HEAT
Maximum °C (°F) 15 (59.0) –
Minimum °C (°F) 8 (46.4) –
Outdoor
Operation
Range
Cooling Maximum °C (°F) 43 (109.4) 26 (78.8)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Heating Maximum °C (°F) 24 (75.2) 18 (64.4)
Minimum °C (°F) -25 (-13.0) –
+8/15°C
HEAT
Maximum °C (°F) – –
Minimum °C (°F) -25 (-13.0) –
1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air
temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F
Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)
3. Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor 2/1°C.
4. Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor -7/-8°C.
5. Specifications are subjected to change without prior notice for further improvement.
6. Maximum heating capacity shown are the values based on powerful operation.
7. If the EUROVENT Certified models can be operated under the “extra-low” temperature condition, -7°C DB and -8°C WB temperature with
rated voltage 230V shall be used.
8. The annual consumption is calculated by multiplying the input power by an average of 500 hours per year in cooling mode.
9. SEER and SCOP classification is at 230V only in accordance with EN-14825. For heating, SCOP indicates the value of only Average heating
season.

13
Model Indoor CS-HZ35WKE
Outdoor CU-HZ35WKE
Performance Test Condition EUROVENT
Power Supply Phase, Hz Single, 50
V 230
Min. Mid. Max.
Cooling
Capacity
kW 0.85 3.50 4.00
BTU/h 2900 11900 13600
kcal/h 730 3010 3440
Running Current A – 3.70 –
Input Power W 170 830 990
Annual Consumption kWh – 415 –
EER
W/W 5.00 4.22 4.04
BTU/hW 17.06 14.34 13.74
kcal/hW 4.29 3.63 3.47
ErP
Pdesign kW 3.5
SEER (W/W) 7.6
Annual Consumption kWh 161
Class A++
Power Factor % – 98 –
Indoor Noise (H / L / QLo) dB-A 44 / 28 / 20
Power Level dB 60 / - / -
Outdoor Noise (H / L / QLo) dB-A 48 / - / 45
Power Level dB 63 / - / -
Heating
Capacity
kW 0.85 4.20 7.83
BTU/h 2900 14300 26700
kcal/h 730 3610 6730
Running Current A – 3.95 –
Input Power W 165 840 2.19k
COP
W/W 5.15 5.00 3.58
BTU/hW 17.58 17.02 12.19
kcal/hW 4.42 4.30 3.07
ErP
Pdesign kW 4.0
Tbivalent °C -10
SCOP (W/W) 5.1
Annual Consumption kWh 1098
Class A+++
Power Factor % – 92 –
Indoor Noise (H / L / QLo) dB-A 45 / 25 / 18
Power Level dB 61 / - / -
Outdoor Noise (H / L / QLo) dB-A 50 / - / 47
Power Level dB 65 / - / -
Low Temp. : Capacity (kW) / I.Power (W) / COP 5.67 / 1.93k / 2.94
Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 4.80 / 1.90k / 2.53
Max Current (A) / Max Input Power (W) 9.7 / 2.19k
Starting Current (A) 3.95
Compressor
Type Hermetic Motor (Rotary)
Motor Type Brushless (4-poles)
Output Power W 900

14
Model Indoor CS-HZ35WKE
Outdoor CU-HZ35WKE
Indoor Fan
Type Cross-flow Fan
Material ASG33
Motor Type DC / Transistor (8-poles)
Input Power W 47.3
Output Power W 40
Speed
QLo Cool rpm 540
Heat rpm 550
Lo Cool rpm 700
Heat rpm 720
Me Cool rpm 940
Heat rpm 1020
Hi Cool rpm 1200
Heat rpm 1300
SHi Cool rpm 1270
Heat rpm 1370
Outdoor Fan
Type Propeller Fan
Material PP
Motor Type DC Motor (8-poles)
Input Power W –
Output Power W 40
Speed Hi Cool rpm 860
Heat rpm 860
Moisture Removal L/h (Pt/h) 2.0 (4.2)
Indoor Airflow
QLo Cool m3/min (ft3/min) 5.77 (204)
Heat m3/min (ft3/min) 5.90 (208)
Lo Cool m3/min (ft3/min) 7.94 (280)
Heat m3/min (ft3/min) 8.02 (283)
Me Cool m3/min (ft3/min) 10.76 (380)
Heat m3/min (ft3/min) 11.76 (415)
Hi Cool m3/min (ft3/min) 14.00 (495)
Heat m3/min (ft3/min) 15.60 (550)
SHi Cool m3/min (ft3/min) 14.88 (526)
Heat m3/min (ft3/min) 16.13 (570)
Outdoor
Airflow Hi Cool m3/min (ft3/min) 34.40 (1215)
Heat m3/min (ft3/min) 35.60 (1255)
Refrigeration
Cycle
Control Device Expansion Valve
Refrigerant Oil cm3FW50S (450)
Refrigerant Type g (oz) R32, 1.12k (39.5)
F-Gas
GWP 675
PRECHARGED AMOUNT /
MAXIMUM CHARGE AMOUNT CO2eq (ton) 0.76 / 0.92
Dimension
Height (I/D / O/D) mm (inch) 295 (11-5/8) / 622 (24-1/2)
Width (I/D / O/D) mm (inch) 870 (34-9/32) / 824 (32-15/32)
Depth (I/D / O/D) mm (inch) 230 (9-1/16) / 299 (11-25/32)
Weight Net (I/D / O/D) kg (lb) 10 (22) / 36 (79)
Piping
Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8)
Standard length m (ft) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height different m (ft) 10.0 (32.8)
Additional Gas Amount g/m (oz/ft) 20 (0.2)
Length for Additional Gas m (ft) 7.5 (24.6)

15
Model Indoor CS-HZ35WKE
Outdoor CU-HZ35WKE
Drain Hose Inner Diameter mm 16
Length mm 650
Indoor Heat
Exchanger
Fin Material Aluminium (Pre Coat)
Fin Type Slit Fin
Row × Stage × FPI 2 × 17 × 21, Sub Eva × 2 : 1 × 4 × 21
Size (W × H × L) mm 636.5 × 357 × 25.4, Sub Eva × 2 : 636.5 × 73.4 × 12.7
Outdoor Heat
Exchanger
Fin Material Aluminium (Pre Coat)
Fin Type Corrugate Fin
Row × Stage × FPI 2 × 28 × 19
Size (W × H × L) mm 36.4 × 588 × 856.3:827.7
Air Filter Material Polypropelene
Type One-touch
Power Supply Indoor / Outdoor
Power Supply Cord A Nil
Thermostat Electronic Control
Protection Device Electronic Control
Dry Bulb Wet Bulb
Indoor
Operation
Range
Cooling Maximum °C (°F) 32 (89.6) 23 (73.4)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Heating Maximum °C (°F) 30 (86.0) –
Minimum °C (°F) 16 (60.8) –
+8/15°C
HEAT
Maximum °C (°F) 15 (59.0) –
Minimum °C (°F) 8 (46.4) –
Outdoor
Operation
Range
Cooling Maximum °C (°F) 43 (109.4) 26 (78.8)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Heating Maximum °C (°F) 24 (75.2) 18 (64.4)
Minimum °C (°F) -25 (-13.0) –
+8/15°C
HEAT
Maximum °C (°F) – –
Minimum °C (°F) -25 (-13.0) –
1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air
temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F
Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)
3. Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor 2/1°C.
4. Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor -7/-8°C.
5. Specifications are subjected to change without prior notice for further improvement.
6. Maximum heating capacity shown are the values based on powerful operation.
7. If the EUROVENT Certified models can be operated under the “extra-low” temperature condition, -7°C DB and -8°C WB temperature with
rated voltage 230V shall be used.
8. The annual consumption is calculated by multiplying the input power by an average of 500 hours per year in cooling mode.
9. SEER and SCOP classification is at 230V only in accordance with EN-14825. For heating, SCOP indicates the value of only Average heating
season.

16
4. Features
Inverter Technology
oWider output power range
oEnergy saving
oMore precise temperature control
Environment Protection
oNon-ozone depletion substances refrigerant (R32)
Long Installation Piping
oLong piping up to 20 meters
Easy to use remote control
Quality Improvement
oRandom auto restart after power failure for safety restart operation
oGas leakage protection
oPrevent compressor reverse cycle
oInner protector to protect Compressor
oNoise prevention during soft dry operation
Operation Improvement
oQuiet mode to reduce the indoor/outdoor unit operating sound
oPowerful mode to reach the desired room temperature quickly
o24-hour timer setting
o+8/15°C HEAT operation is designed to provide heating at low temperature settings. It is used in houses
unoccupied during winter, for the purpose of protecting equipment or housing appliances which may be
destroyed by extreme cold weather
onanoeTMX operation provides clean air, moisturises your skin and hair, deodorizes odours in the room.
Serviceability Improvement
oBreakdown Self Diagnosis function
Communications network

17
5. Location of Controls and Components
5.1 Indoor Unit
Front panel Air Filters
Horizontal airflow direction louver
• Do not adjust by hand.
Auto OFF/ON button
Remote Control Receiver
(Maximum distances: 8m)
• Use when remote control is misplaced or
a malfunction occurs.
Vertical airflow
direction louver
• Do not adjust
by hand.
Indicator
Aluminium fin
5.2 Outdoor Unit
5.3 Remote Control
+8/15°C Heat Operation
Operation mode
Check
Timer setting
Wireless LAN ON / OFF
Temperature setting
FAN SPEED / QUIET selection
Clock setting
Airflow direction adjustment
Remote control display
POWERFUL operation
nanoe X operation OFF/ON

18
6. Dimensions
6.1 Indoor Unit
Relative position between the indoor unit and the installation plate <Front View>
<Top View
>
<Side View><Side View>
<Front View>
<Bottom View>
<Rear View>
16.4
264.1
Unit : mm
Right
piping
hole
Left
piping
hole
497.2
Indoor unit
external
dimensions
line
Installation
plate
128
439
85
137
128
432
DIS TANCE
TO PIPE
HOLE
CENTER
128 mm
DISTANCETO
PIPE HOLE
CENTER 128 mm
PIPE HOLE CENTER
PIPE HOLE
CENTER
128
241.5241.5
<Remote Control Transmitter>
59
165 (Close)
217 (Open)
69
64
<Remote Control Holder>
230
295
60
41.5
0.5±0.5
Right piping hole
Left piping hole
Air intake
direction
Air outlet
direction
60
41.5
0.5±0.5
870
5.0±25.0±2
105.8
60
119.1
60
0.5±0.5
(41-61) 590
Liquid side
Gas side

19
6.2 Outdoor Unit
<Top View
>
<Front View><Side View>
<Side View>
Anchor Bolt Pitch
330 x 540
Space necessary for
installation
100mm
100mm
1000mm
Unit : mm
3-way valve at Gas side
(Low Pressure)
2-way valve at Liquid side
(High Pressure)
22 (124) (53.4)
330
622 167
97
69
(23)
61
32
540 160
824 68.5
46 299

20
7. Refrigeration Cycle Diagram
INDOOR OUTDOOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
TANK
TEMP.
SENSOR
INTAKE
TEMP.
SENSOR
PIPE
TEMP.
SENSOR
LIQUID
SIDE
2-WAY
VALVE
3-WAY
VALVE
4-WAY
VALVE
GAS
SIDE
COOLING
HEAT EXCHANGER
(EVAPORATOR)
HEAT EXCHANGER
(CONDENSER)
HEATING
COMPRESSOR
STRAINER
EXPANSION
VALVE
DISCHARGE
MUFFLER
ACCUMLATOR