Panasonic CS-Z25TKEW, CS-Z35TKEW, CS-Z42TKEW, CS-Z50TKEW, CS-Z71TKEW Service Manual

...

Order No: PAPAMY1701023CE

Indoor Unit Outdoor Unit CS-Z20TKEW CS-Z25TKEW CS-Z35TKEW CS-Z42TKEW CS-Z50TKEW CS-Z71TKEW

CS-XZ20TKEW CS-XZ25TKEW CS-XZ35TKEW CS-XZ50TKEW

CU-Z20TKE CU-Z25TKE CU-Z35TKE CU-Z42TKE CU-Z50TKE CU-Z71TKE CU-Z20TKE CU-Z25TKE CU-Z35TKE CU-Z50TKE

Destination

Europe

Turkey

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.

WARNING

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.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

R32 REFRIGERANT – This Air Conditioner contains and operates with refrigerant R32.

THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.

Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product.

CAUTION

Before performing any of the electrical installation works, please verify on which of the intended connection use. Generally there are 2 types of indoor-outdoor connections:

A Single Connection (Single Indoor Unit connects with Single Outdoor Unit)

○

B Multiple Connection (Multiple Indoor Unit connect with Single Outdoor Unit)

○

Both connections have different connecting methods. Any mismatch connections will result in malfunctions. The following illustration demonstrates the correct electrical works for both type.

A (Single Connection)

○

Terminals on the outdoor unit

Colour of wires (connection cable)

Terminals on the indoor unit

(Power supply cord)

Terminals on the isolating devices (Disconnecting means)

Please refer to the provided Installation Instructions for the detailed procedures for connecting cables to Indoor Unit.

L 1 N

(L) (N)

32S1

Terminals on the outdoor unit

Colour of wires (connection cable)

Terminals on the indoor unit

(Power supply cord)

Terminals on the isolating devices (Disconnecting means)

B (Multiple Connection)

○

L 1 N S1

Connection for multi inverter model

(Outdoor power supply)

123

TABLE OF CONTENTS

PAGE PAGE

1. Safety Precautions ............................................. 5

2. Precaution for Using R32 Refrigerant .............. 8

3. Specifications ................................................... 12

4. Features ............................................................ 23

5. Location of Controls and Components .......... 24

5.1 Indoor Unit .................................................. 24

5.2 Outdoor Unit ............................................... 24

5.3 Remote Control .......................................... 24

6. Dimensions ....................................................... 25

6.1 Indoor Unit .................................................. 25

6.2 Outdoor Unit ............................................... 27

7. Refrigeration Cycle Diagram ........................... 29

7.1 CS-Z20TKEW CU-Z20TKE

CS-Z25TKEW CU-Z25TKE CS-Z35TKEW CU-Z35TKE CS-Z42TKEW CU-Z42TKE CS-XZ20TKEW CU-Z20TKE CS-XZ25TKEW CU-Z25TKE

CS-XZ35TKEW CU-Z35TKE ..................... 29

7.2 CS-Z50TKEW CU-Z50TKE

CS-Z71TKEW CU-Z71TKE

CS-XZ50TKEW CU-Z50TKE ..................... 30

8. Block Diagram .................................................. 31

8.1 CS-Z20TKEW CU-Z20TKE

CS-XZ20TKEW CU-Z20TKE ..................... 31

8.2 CS-Z25TKEW CU-Z25TKE

CS-Z35TKEW CU-Z35TKE CS-Z50TKEW CU-Z50TKE CS-Z71TKEW CU-Z71TKE CS-XZ25TKEW CU-Z25TKE CS-XZ35TKEW CU-Z35TKE

CS-XZ50TKEW CU-Z50TKE ..................... 32

8.3 CS-Z42TKEW CU-Z42TKE ........................ 33

9. Wiring Connection Diagram ............................ 34

9.1 Indoor Unit .................................................. 34

9.2 Outdoor Unit ............................................... 35

10. Electronic Circuit Diagram .............................. 38

10.1 Indoor Unit .................................................. 38

10.2 Outdoor Unit ............................................... 39

11. Printed Circuit Board ....................................... 42

11.1 Indoor Unit .................................................. 42

11.2 Outdoor Unit ............................................... 46

12. Installation Instruction ..................................... 49

12.1 Select the Best Location ............................ 49

12.2 Indoor Unit .................................................. 50

12.3 Outdoor Unit ............................................... 57

13. Installation and Servicing Air Conditioner

using R32 .......................................................... 61

13.1 About R32 Refrigerant ............................... 61

13.2 Characteristics of R32 Refrigerant ............. 61

13.3 Refrigerant piping installation • Tools used

in services .................................................. 63

13.4 New installation, Relocation, Repairing of

Refrigerant Cycle System The

Procedures ................................................. 67

13.5 Piping installation of R32 ............................ 68

13.6 Installation, Relocation, and Service .......... 69

13.7 Repairing of refrigerant cycle / Brazing

point ............................................................ 73

13.8 <Reference> Analysis method for no error

code, no cooling / no warming ................... 79

14. Operation Control ............................................. 81

14.1 Basic Function ............................................ 81

14.2 Indoor Fan Motor Operation ....................... 82

14.3 Outdoor Fan Motor Operation .................... 83

14.4 Airflow Direction ......................................... 84

14.5 Quiet Operation (Cooling Mode/Cooling

Area of Dry Mode) ...................................... 87

14.6 Quiet Operation (Heating) .......................... 87

14.7 Powerful Mode Operation .......................... 87

14.8 Timer Control .............................................. 88

14.9 Sleep Mode Operation ............................... 88

14.10 Auto Restart Control ................................... 88



14.11 Indication Panel .......................................... 89

14.12 nanoe Operation ......................................... 89

14.13 Mild Dry Cooling Operation ........................ 91

14.14 ECONAVI Operation .................................. 91

15. Operation Control (For Multi Split

Connection) ...................................................... 99

15.1 Cooling operation ....................................... 99

15.2 Soft Dry Operation ...................................... 99

15.3 Heating Operation ...................................... 99

15.4 Automatic Operation ................................ 100

15.5 Indoor Fan Motor Operation ..................... 100

15.6 Powerful Mode Operation ........................ 100

15.7 Auto Restart Control ................................. 100

15.8 Indication Panel ........................................ 100

15.9 Mild Dry Cooling Operation ...................... 100

16. Protection Control .......................................... 101

16.1 Protection Control for All Operations ........ 101

16.2 Protection Control for Cooling & Soft Dry

Operation .................................................. 103

16.3 Protection Control for Heating

Operation .................................................. 104

17. Servicing Mode ............................................... 106

17.1 Auto OFF/ON Button ................................ 106

17.2 Heat Only Operation ................................ 107

17.3 Remote Control Button ............................. 108

18. Troubleshooting Guide .................................. 111

18.1 Refrigeration Cycle System ...................... 111

18.2 Breakdown Self Diagnosis Function ........ 113

18.3 Error Codes Table .................................... 114

18.4 Self-diagnosis Method .............................. 116



19.

 Disassembly and Assembly Instructions ....144

19.1 CS-Z20TKEW CS-Z25TKEW

CS-Z35TKEW CS-Z42TKEW CS-XZ20TKEW CS-XZ25TKEW

CS-XZ35TKEW ........................................144

19.2 CS-Z50TKEW CS-Z71TKEW

CS-XZ50TKEW ........................................151

19.3 Outdoor Electronic Controller Removal

Procedure .................................................158

20. Technical Data ................................................161

20.1 Cool Mode Performance Data ..................161

20.2 Heat Mode Performance Data ..................163

21. Service Data ....................................................165

21.1 Cool Mode Outdoor Air Temperature

Characteristic ............................................165

21.2 Heat Mode Outdoor Air Temperature

Characteristic ............................................171

21.3 Piping Length Correction Factor ...............177

22. Exploded View and Replacement Parts

List ...................................................................179

22.1 Indoor Unit ................................................179

22.2 Outdoor Unit .............................................189



1. Safety Precautions

 Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the

power plug and main circuit for the model 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 or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

WARNING

CAUTION

 The items to be followed are classified by the symbols:

 Explanation of symbols displayed on the indoor unit or outdoor unit.

WARNING

CAUTION

 Carry out test run to confirm that no abnormality occurs after the servicing. 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.

This indication shows the possibility of causing death or serious injury.

This indication shows the possibility of causing injury or damage to properties.

This symbol denotes item that is PROHIBITTED from doing.

This symbol shows that this equipment uses a flammable refrigerant. If the refrigerant is leaked, together with an external ignition source, there is a possibility of ignition.

This symbol shows that the Operation Manual should be read carefully.

This symbol shows that a service personnel should be handling this equipment with reference to the Installation Manual.

This symbol shows that there is information included in the Operation Manual and/or Installation Manual.

WARNING

Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Any

1. unfit method or using incompatible material may cause product damage, burst and serious injury.

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child

2. may climb up to outdoor unit and cross over the handrail causing an accident.

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.

The appliance shall be stored in a well ventilated room with floor area larger than A min (m continuously operating ignition sources.

4. Keep away from open flames, any operating gas appliances or any operating electric heater. Else, it may explode and cause

injury or death.

5. Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.

6. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

7. Do not sit or step on the unit, you may fall down accidentally.

The appliance shall be installed, and/or operated in a room with floor area larger than A min (m

from ignition sources, such as heat/sparks/open flame, or, hazardous areas, such as gas appliances, gas cooking, reticulated gas supply systems, or electric cooking appliances, etc.

9. Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.

When installing or relocating air conditioner, do not let any substance other than the specified refrigerant, eg. air etc mix into

10.

refrigeration cycle (piping). Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.

Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, flame, sparks, or other sources of

11.

ignition. Else, it may explode and cause injury or death.

12. Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.

) [refer Table A] and without any

) [refer Table A] and keep away

WARNING

Do not perform flare connection inside a building or dwelling or room, when joining the heat exchanger of indoor unit with interconnecting piping. Refrigerant connection inside a building or dwelling or room must be made by brazing or welding. Joint

13. connection of indoor unit by flaring method can only be made at outdoor or at outside of a building or dwelling or room. Flare

connection may cause gas leak and flammable atmosphere.

 For R32 model, use piping, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut and

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

 Thickness or 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.

Engage authorized dealer or specialist for installation and servicing. If installation or servicing done by the user is defective, it will cause water leakage, electrical shock or fire.

For refrigeration system work, Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire.

Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

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.

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.

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.

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 heat-up or fire at connection point of terminal, fire or electrical shock.

This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD), with sensitivity of 30mA at 0.1 sec or less. Otherwise, it may cause electrical shock and fire in case of equipment breakdown or insulation breakdown.

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.

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.

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.

After completion of installation or service, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

27. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.

28. Be aware that refrigerants may not contain an odour.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and

29. telephone. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.

30. Do not modify the machine, part, material during repairing service.

31. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

32. Do not wrench the fasten terminal. Pull it out or insert it straightly.

33. Must not use other parts except original parts describe in catalog and manual.

CAUTION

Do not install the unit in a place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding

1. 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.

Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts.

3. 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.

CAUTION

5. Do not touch the sharp aluminium fin, sharp parts may cause injury.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the

6. furniture.

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.

Power supply connection to the room air conditioner. Use power supply cord 3 × 1.5 mm 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 (3/4 ~ 1.75HP), 16A (2.0HP), 20A (2.5HP) 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 (3/4 ~ 2.25HP), 20A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap.

9. Installation or servicing work: It may need two people to carry out the installation or servicing work.

Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F

(370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

Do not touch the sharp aluminum fins or edges of metal parts.

11.

If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury.

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

12. break and cause refrigerant gas leakage.

13. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.

(3/4 ~ 1.75HP), 3 × 2.5 mm2 (2.0 ~ 2.5HP) type designation 60245 IEC 57 or heavier cord.

2. Precaution for Using R32 Refrigerant

 The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.

However, pay careful attention to the following points:

WARNING

Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are special. (See “2.1. Special tools for R32 (R410A)”.)

1. Especially, when replacing a refrigerant R22 model with a new refrigerant R32 model, always replace the conventional piping and flare

nuts with the R32 and R410A piping and flare nuts on the outdoor unit side. For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used.

Models that use refrigerant R32 and R410A have a different charging port thread diameter to prevent erroneous charging with refrigerant

R22 and for safety. Therefore, check beforehand. [The charging port thread diameter for R32 and R410A is 12.7 mm (1/2 inch).]

Be more careful than R22 so that foreign matter (oil, water, etc.) does not enter the piping.

3. Also, when storing the piping, securely seal the opening by pinching, taping, etc. (Handling of R32 is similar to R410A.)

CAUTION

Installation (Space)

 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.  Always contact to local municipal offices for proper handling.  Interconnecting refrigerant pipework, i.e. pipework external to the unitary components, should be marked with a Class label (see

Figure 9.1 of Code of Practice) every two metres where the pipework is visible. This includes pipework located in a ceiling space or any void which a person may access for maintenance or repair work within that space.

Servicing

2-1. Service personnel  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. 2-2. Work  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 #2-2 to #2-8 must be followed before conducting work on the system.  Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while

the work is being performed.  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.  Wear appropriate protective equipment, including respiratory protection, as conditions warrant.  Ensure that the conditions within the area have been made safe by limit of use of any flammable material. Keep all sources of

ignition and hot metal surfaces away. 2-3. 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 downwind of the leaking/spill, isolate immediate hazard area and keep

unauthorized personnel out. 2-4. 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 CO

fire extinguisher adjacent to the charging area.

CAUTION

2-5. 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. 2-6. 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.

2-7. 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 charge size 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. 2-8. 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.

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.

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. 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.

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.

CAUTION

Leak detection methods  Electronic leak detectors shall 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

10.

employed and the appropriate percentage of gas (25 % maximum) is confirmed.

 Leak detection fluids are suitable for use with most refrigerants but 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. Oxygen free nitrogen (OFN) shall then be purged through the system both before and during the brazing process.

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 again 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 “flushed” with OFN to render the unit safe.  This process may need to be repeated several times.  Compressed air or oxygen shall not be used for this task.  Flushing 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 ignition sources and there is ventilation available.

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 upright.

- 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.

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

reclaimed refrigerant.

 It is essential that electrical power is available before the task is commenced.

Become familiar with the equipment and its operation.

Isolate system electrically.

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.

Pump down refrigerant system, if possible.

If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.

Make sure that cylinder is situated on the scales before recovery takes place.

Start the recovery machine and operate in accordance with manufacturer’s instructions.

g) h)

Do not over fill cylinders. (No more than 80 % volume liquid charge).

Do not exceed the maximum working pressure of the cylinder, even temporarily. 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.

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.

CAUTION

Labelling  Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant.

11.

 The label shall be dated and signed.  Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.

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 flammable refrigerants.  In addition, a set of calibrated weighing scales shall be available and in good working order.

12.

 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.

3. Specifications

Model

Performance Test Condition EUROVENT EUROVENT

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 2.15 – – 2.45 –

Input Power W 240 450 555 240 520 790

Annual Consumption kWh – 225 – – 260 –

EER

Cooling

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Heating

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Low Temp. : Capacity (kW) / I.Power (W) / COP 2.90 / 870 / 3.33 3.62 / 1.12k / 3.23

Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 2.38 / 880 / 2.70 2.95 / 1.15k / 2.57

Max Current (A) / Max Input Power (W) 4.40 / 990 5.6 / 1.26k

Pdesign kW 2.1 2.5

SEER (W/W) 7.5 8.5

Annual

Consumption

Class A++ A+++

Power Factor % – 91 – – 92 –

Capacity

Running Current A – 2.80 – – 3.25 –

Input Power W 180 620 990 180 710 1.26k

COP

Pdesign kW 2.1 2.7

Tbivalent °C -10 -10

SCOP (W/W) 4.7 5.1

Annual

Consumption

Class A++ A+++

Power Factor % – 96 – – 95 –

Starting Current (A) 2.80 3.25

Indoor CS-Z20TKEW / CS-XZ20TKEW CS-Z25TKEW / CS-XZ25TKEW

Outdoor CU-Z20TKE CU-Z25TKE

Phase, Hz Single, 50 Single, 50

V 230 230

kW 0.75 2.05 2.40 0.85 2.50 3.20

BTU/h 2560 6990 8180 2900 8530 10900

Kcal/h 650 1760 2060 730 2150 2750

W/W 3.13 4.56 4.32 3.54 4.81 4.05

BTU/hW 10.67 15.53 14.74 12.08 16.40 13.80

Kcal/hW 2.71 3.91 3.71 3.04 4.13 3.48

kWh 98 103

dB-A 37 / 24 / 19 39 / 25 / 19

Power Level dB 53 / – 55 / –

dB-A 45 / – 46 / –

Power Level dB 60 / – 61 / –

kW 0.70 2.80 4.00 0.80 3.40 5.00

BTU/h 2390 9550 13600 2730 11600 17100

Kcal/h 600 2410 3440 690 2920 4300

W/W 3.89 4.52 4.04 4.44 4.79 3.97

BTU/hW 13.28 15.40 13.74 15.17 16.34 13.57

Kcal/hW 3.33 3.89 3.47 3.83 4.11 3.41

kWh 626 741

dB-A 38 / 25 / 19 41 / 27 / 19

Power Level dB 54 / – 57 / –

dB-A 46 / – 47 / –

Power Level dB 61 / – 62 / –

Model

Indoor CS-Z20TKEW / CS-XZ20TKEW CS-Z25TKEW / CS-XZ25TKEW

Outdoor CU-Z20TKE CU-Z25TKE

Type Hermetic Motor (Rotary) Hermetic Motor (Rotary)

Compressor

Motor Type Brushless (6 poles) Brushless (4 poles)

Output Power W 650 700

Type Cross-Flow Fan Cross-Flow Fan

Material ASG20K1 ASG20K1

Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles)

Input Power W 44.9 44.9

Output Power W 40 40

Cool rpm 610 600

Heat rpm 610 620

Cool rpm 700 720

Heat rpm 780 860

Cool rpm 880 930

Heat rpm 960 1080

Cool rpm 1060 1140

Heat rpm 1140 1300

Cool rpm 1090 1190

Heat rpm 1170 1350

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan Propeller Fan

Material PP PP

Motor Type DC (8-poles) DC (8-poles)

Input Power W – –

Outdoor Fan

Output Power W 40 40

Speed Hi

Cool rpm 780 820

Heat rpm 700 780

Moisture Removal L/h (Pt/h) 1.3 (2.7) 1.5 (3.2)

/min (ft3/min) 5.06 (179) 4.84 (171)

/min (ft3/min) 6.03 (213) 5.98 (211)

/min (ft3/min) 7.98 (282) 7.97 (281)

/min (ft3/min) 9.90 (350) 10.00 (355)

/min (ft3/min) 10.24 (362) 10.44 (369)

/min (ft3/min) 26.9 (950) 28.7 (1015)

Indoor

Airflow

Outdoor

Airflow

QLo

SHi

Cool m

Heat m3/min (ft3/min) 5.06 (179) 5.03 (178)

Cool m

Heat m3/min (ft3/min) 6.90 (244) 7.31 (258)

Cool m

Heat m3/min (ft3/min) 8.84 (312) 9.40 (332)

Cool m

Heat m3/min (ft3/min) 10.80 (380) 11.50 (405)

Cool m

Heat m3/min (ft3/min) 11.11 (392) 11.96 (422)

Cool m

Heat m3/min (ft3/min) 26.9 (950) 28.7 (1015)

Control Device Expansion Valve Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FW50S (320) FW50S (320)

Refrigerant Type g (oz) R32, 760 (26.8) R32, 850 (30.0)

GWP 675 675

F-Gas

CO2eq (ton)

(Precharged Amount /

0.513 / 0.564 0.574 / 0.624

Maximum Charged Amount)

Height (I/D / O/D) mm (inch) 295 (11-5/8) / 542 (21-11/32) 295 (11-5/8) / 542 (21-11/32)

Dimension

Width (I/D / O/D) mm (inch) 919 (36-3/16) / 780 (30-23/32) 919 (36-3/16) / 780 (30-23/32)

Depth (I/D / O/D) mm (inch) 194 (7-21/32) / 289 (11-13/32) 194 (7-21/32) / 289 (11-13/32)

Weight Net (I/D / O/D) kg (lb) 9 (20) / 30 (66) 10 (22) / 31 (68)

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 9.52 (3/8)

Standard length m (ft) 5.0 (16.4) 5.0 (16.4)

Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 15 (49.2)

I/D & O/D Height different m (ft) 15.0 (49.2) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 10 (0.1) 10 (0.1)

Length for Additional Gas m (ft) 7.5 (24.6) 7.5 (24.6)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil Nil

Indoor

Operation

Range

Outdoor

Operation

Range

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. Standby power consumption ≤10.0w (when switched OFF by remote control, except under self protection control).

6. Specifications are subjected to change without prior notice for further improvement.

Inner Diameter mm 16.7 16.7

Length mm 650 650

Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat)

Fin Type Slit Fin Slit Fin

Row × Stage × FPI 2 × 15 × 21 2 × 15 × 21

Size (W × H × L) mm 610 × 315 × 25.4 610 × 315 × 25.4

Fin Material Aluminium Aluminium

Fin Type Corrugated Fin Corrugated Fin

Row × Stage × FPI 2 × 24 × 17 2 × 24 × 19

Size (W × H × L) mm 36.4 × 504 × 713:684 36.4 × 504 × 824.2:793.7

Material Polypropelene Polypropelene

Type One-touch One-touch

Power Supply Indoor Indoor

Thermostat Electronic Contol Electronic Contol

Protection Device Electronic Contol Electronic Contol

Dry Bulb Wet Bulb Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-Z20TKEW / CS-XZ20TKEW CS-Z25TKEW / CS-XZ25TKEW

Outdoor CU-Z20TKE CU-Z25TKE

Maximum °C 32 23 32 23

Minimum °C 16 11 16 11

Maximum °C 30 – 30 –

Minimum °C 16 – 16 –

Maximum °C 43 26 43 26

Minimum °C -10 – -10 –

Maximum °C 24 18 24 18

Minimum °C -15 -16 -15 -16

Model

Performance Test Condition EUROVENT EUROVENT

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 3.85 – – 5.50 –

Input Power W 240 830 1.05k 260 1.24k 1.57k

Annual Consumption kWh – 415 – – 620 –

EER

Cooling

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Running Current A – 4.20 – – 6.40 –

Heating

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Low Temp. : Capacity (kW) / I.Power (W) / COP 4.20 / 1.33k / 3.16 4.93 / 1.72k / 2.87

Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 3.40 / 1.38k / 2.46 4.11 / 1.73k / 2.38

Max Current (A) / Max Input Power (W) 7.8 / 1.50k 8.5 / 1.94k

Pdesign kW 3.5 4.2

SEER (W/W) 8.5 6.9

Annual

Consumption

Class A+++ A++

Power Factor % – 94 – – 98 –

Capacity

Input Power W 180 900 1.50k 190 1.44k 1.94k

COP

Pdesign kW 3.2 3.6

Tbivalent °C -10 -10

SCOP (W/W) 5.1 4.0

Annual

Consumption

Class A+++ A+

Power Factor % – 93 – – 98 –

Starting Current (A) 4.20 6.40

Indoor CS-Z35TKEW / CS-XZ35TKEW CS-Z42TKEW

Outdoor CU-Z35TKE CU-Z42TKE

Phase, Hz Single, 50 Single, 50

V 230 230

kW 0.85 3.50 4.00 0.85 4.20 5.00

BTU/h 2900 11900 13600 2900 14300 17100

Kcal/h 730 3010 3440 730 3610 4300

W/W 3.54 4.22 3.81 3.27 3.39 3.18

BTU/hW 12.08 14.34 12.95 11.15 11.53 10.89

Kcal/hW 3.04 3.63 3.28 2.81 2.91 2.74

kWh 144 213

dB-A 42 / 28 / 19 43 / 31 / 25

Power Level dB 58 / – 59 / –

dB-A 48 / – 49 / –

Power Level dB 63 / – 64 / –

kW 0.80 4.00 5.80 0.80 5.30 6.80

BTU/h 2730 13600 19800 2730 18100 23200

Kcal/h 690 3440 4990 690 4560 5850

W/W 4.44 4.44 3.87 4.21 3.68 3.51

BTU/hW 15.17 15.11 13.20 14.37 12.57 11.96

Kcal/hW 3.83 3.82 3.33 3.63 3.17 3.02

kWh 878 1260

dB-A 43 / 33 / 19 43 / 35 / 29

Power Level dB 59 / – 59 / –

dB-A 50 / – 51 / –

Power Level dB 65 / – 66 / –

Model

Indoor CS-Z35TKEW / CS-XZ35TKEW CS-Z42TKEW

Outdoor CU-Z35TKE CU-Z42TKE

Type Hermetic Motor (Rotary) Hermetic Motor (Rotary)

Compressor

Motor Type Brushless (4 poles) Brushless (6 poles)

Output Power W 700 700

Type Cross-Flow Fan Cross-Flow Fan

Material ASG20K1 ASG20K1

Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles)

Input Power W 44.9 44.9

Output Power W 40 40

Cool rpm 600 720

Heat rpm 620 890

Cool rpm 800 870

Heat rpm 1020 1080

Cool rpm 1010 1070

Heat rpm 1210 1220

Cool rpm 1220 1270

Heat rpm 1400 1370

Cool rpm 1270 1320

Heat rpm 1450 1420

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan Propeller Fan

Material PP PP

Motor Type DC (8-poles) DC (8-poles)

Input Power W – –

Output Power W 40 40

Outdoor Fan

Speed Hi

Cool rpm 870 900

Heat rpm 890 910

Moisture Removal L/h (Pt/h) 2.0 (4.2) 2.4 (5.1)

/min (ft3/min) 4.84 (171) 5.98 (211)

/min (ft3/min) 6.74 (238) 7.40 (261)

/min (ft3/min) 8.73 (308) 9.30 (328)

/min (ft3/min) 10.70 (380) 11.20 (395)

/min (ft3/min) 11.20 (396) 11.68 (412)

/min (ft3/min) 34.4 (1215) 33.3 (1175)

Indoor Airflow

Outdoor

Airflow

QLo

SHi

Cool m

Heat m3/min (ft3/min) 5.03 (178) 7.59 (268)

Cool m

Heat m3/min (ft3/min) 8.83 (312) 9.40 (332)

Cool m

Heat m3/min (ft3/min) 10.63 (375) 10.73 (379)

Cool m

Heat m3/min (ft3/min) 12.40 (440) 12.30 (435)

Cool m

Heat m3/min (ft3/min) 12.91 (456) 12.63 (446)

Cool m

Heat m3/min (ft3/min) 35.6 (1255) 33.7 (1190)

Control Device Expansion Valve Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FW50S (320) FW50S (320)

Refrigerant Type g (oz) R32, 910 (32.1) R32, 870 (30.7)

GWP 675 675

F-Gas

CO2eq (ton)

(Precharged Amount /

0.614 / 0.665 0.587 / 0.638

Maximum Charged Amount)

Height (I/D / O/D) mm (inch) 295 (11-5/8) / 619 (24-3/8) 295 (11-5/8) / 619 (24-3/8)

Dimension

Width (I/D / O/D) mm (inch) 919 (36-3/16) / 824 (32-15/32) 919 (36-3/16) / 824 (32-15/32)

Depth (I/D / O/D) mm (inch) 194 (7-21/32) / 299 (11-25/32) 194 (7-21/32) / 299 (11-25/32)

Weight Net (I/D / O/D) kg (lb) 10 (22) / 34 (75) 10 (22) / 32 (71)

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 12.70 (1/2)

Standard length m (ft) 5.0 (16.4) 5.0 (16.4)

Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 15 (49.2)

I/D & O/D Height different m (ft) 15.0 (49.2) 15.0 (49.2)

Piping

Additional Gas Amount g/m (oz/ft) 10 (0.1) 10 (0.1)

Length for Additional Gas m (ft) 7.5 (24.6) 7.5 (24.6)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil Nil

Indoor

Operation

Range

Outdoor

Operation

Range

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. Standby power consumption ≤10.0w (when switched OFF by remote control, except under self protection control).

6. Specifications are subjected to change without prior notice for further improvement.

Inner Diameter mm 16.7 16.7

Length mm 650 650

Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat)

Fin Type Slit Fin Slit Fin

Row × Stage × FPI 2 × 15 × 21 2 × 15 × 21

Size (W × H × L) mm 610 × 315 × 25.4 610 × 315 × 25.4

Fin Material Aluminium Aluminium

Fin Type Corrugated Fin Corrugated Fin

Row × Stage × FPI 2 × 28 × 17 2 × 28 × 17

Size (W × H × L) mm 36.38 × 588 × 856.3:827.7 36.38 × 588 × 606.6

Material Polypropelene Polypropelene

Type One-touch One-touch

Power Supply Indoor Indoor

Thermostat Electronic Contol Electronic Contol

Protection Device Electronic Contol Electronic Contol

Dry Bulb Wet Bulb Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-Z35TKEW / CS-XZ35TKEW CS-Z42TKEW

Outdoor CU-Z35TKE CU-Z42TKE

Maximum °C 32 23 32 23

Minimum °C 16 11 16 11

Maximum °C 30 – 30 –

Minimum °C 16 – 16 –

Maximum °C 43 26 43 26

Minimum °C -10 – -10 –

Maximum °C 24 18 24 18

Minimum °C -15 -16 -15 -16

Model

Performance Test Condition EUROVENT EUROVENT

Power Supply

Min. Mid. Max. Min. Mid. Max.

Capacity

Running Current A – 6.30 – – 9.70 –

Input Power W 280 1.41k 1.95k 420 2.17k 2.90k

Annual Consumption kWh – 705 – – 1085 –

EER

Cooling

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Heating

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L)

Low Temp. : Capacity (kW) / I.Power (W) / COP 5.80 / 2.24k / 2.59 7.39 / 2.52k / 2.93

Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 4.80 / 2.10k / 2.29 6.31 / 2.50k / 2.52

Max Current (A) / Max Input Power (W) 11.1 / 2.53k 15.6 / 3.38k

Pdesign kW 5.0 7.1

SEER (W/W) 7.9 6.5

Annual

Consumption

Class A++ A++

Power Factor % – 97 – – 97 –

Capacity

Running Current A – 6.50 – – 10.30 –

Input Power W 340 1.44k 2.53k 400 2.35k 2.95k

COP

Pdesign kW 4.2 5.5

Tbivalent °C -10 -10

SCOP (W/W) 4.7 4.2

Annual

Consumption

Class A++ A+

Power Factor % – 96 – – 99 –

Starting Current (A) 6.50 10.30

Indoor CS-Z50TKEW / CS-XZ50TKEW CS-Z71TKEW

Outdoor CU-Z50TKE CU-Z71TKE

Phase, Hz Single, 50 Single, 50

V 230 230

kW 0.98 5.00 6.00 0.98 7.10 8.50

BTU/h 3340 17100 20500 3340 24200 29000

Kcal/h 840 4300 5160 840 6110 7310

W/W 3.50 3.55 3.08 2.33 3.27 2.93

BTU/hW 11.93 12.13 10.51 7.95 11.15 10.00

Kcal/hW 3.00 3.05 2.65 2.00 2.82 2.52

kWh 222 382

dB-A 44 / 37 / 30 47 / 38 / 30

Power Level dB 60 / – 63 / –

dB-A 47 / – 52 / –

Power Level dB 62 / – 66 / –

kW 0.98 5.80 8.00 0.98 8.60 10.20

BTU/h 3340 19800 27300 3340 29300 34800

Kcal/h 840 4990 6880 840 7400 8770

W/W 2.88 4.03 3.16 2.45 3.66 3.46

BTU/hW 9.82 13.75 10.79 8.35 12.47 11.80

Kcal/hW 2.47 3.47 2.72 2.10 3.15 2.97

kWh 1251 1833

dB-A 44 / 37 / 30 47 / 38 / 30

Power Level dB 60 / – 63 / –

dB-A 47 / – 54 / –

Power Level dB 62 / – 68 / –

Model

Indoor CS-Z50TKEW / CS-XZ50TKEW CS-Z71TKEW

Outdoor CU-Z50TKE CU-Z71TKE

Type Hermetic Motor (Rotary) Hermetic Motor (Rotary)

Compressor

Motor Type Brushless (4 poles) Brushless (4 poles)

Output Power W 900 1.70k

Type Cross-Flow Fan Cross-Flow Fan

Material ASG33 ASG33

Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles)

Input Power W 89.0 105.0

Output Power W 40 40

Cool rpm 730 800

Heat rpm 760 800

Cool rpm 900 950

Heat rpm 950 980

Cool rpm 1000 1080

Heat rpm 1080 1140

Cool rpm 1100 1210

Heat rpm 1210 1300

Cool rpm 1150 1320

Heat rpm 1260 1400

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan Propeller Fan

Material PP PP

Motor Type DC (8-poles) DC (8-poles)

Input Power W – –

Outdoor Fan

Output Power W 40 40

Speed Hi

Cool rpm 720 820

Heat rpm 700 880

Moisture Removal L/h (Pt/h) 2.8 (5.9) 4.1 (8.7)

/min (ft3/min) 11.89 (420) 12.09 (427)

/min (ft3/min) 15.24 (538) 14.91 (527)

/min (ft3/min) 17.21 (608) 17.35 (613)

/min (ft3/min) 19.20 (680) 19.80 (700)

/min (ft3/min) 20.17 (712) 21.87 (772)

/min (ft3/min) 39.7 (1400) 44.70 (1580)

Indoor

Airflow

Outdoor

Airflow

QLo

SHi

Cool m

Heat m3/min (ft3/min) 12.48 (441) 12.09 (427)

Cool m

Heat m3/min (ft3/min) 16.23 (573) 15.47 (546)

Cool m

Heat m3/min (ft3/min) 18.79 (664) 18.48 (653)

Cool m

Heat m3/min (ft3/min) 21.30 (750) 21.50 (760)

Cool m

Heat m3/min (ft3/min) 22.33 (789) 23.37 (825)

Cool m

Heat m3/min (ft3/min) 38.6 (1365) 45.80 (1615)

Control Device Expansion Valve Expansion Valve

Refrigeration

Cycle

Refrigerant Oil cm3 FW50S (450) FW50S (800)

Refrigerant Type g (oz) R32, 1.11k (39.2) R32, 1.37k (48.4)

GWP 675 675

F-Gas

CO2eq (ton)

(Precharged Amount /

0.749 / 0.876 0.925 / 1.262

Maximum Charged Amount)

Height (I/D / O/D) mm (inch) 302 (11-29/32) / 695 (27-3/8) 302 (11-29/32) / 695 (27-3/8)

Dimension

Width (I/D / O/D) mm (inch) 1120 (44-1/8) / 875 (34-15/32) 1120 (44-1/8) / 875 (34-15/32)

Depth (I/D / O/D) mm (inch) 236 (9-5/16) / 320 (12-5/8) 236 (9-5/16) / 320 (12-5/8)

Weight Net (I/D / O/D) kg (lb) 12 (26) / 42 (93) 13 (29) / 49 (108)

Model

Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) 6.35 (1/4) / 15.88 (5/8)

Standard length m (ft) 5.0 (16.4) 5.0 (16.4)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) 3 (9.8) ~ 30 (98.4)

I/D & O/D Height different m (ft) 15.0 (49.2) 20.0 (65.6)

Piping

Additional Gas Amount g/m (oz/ft) 15 (0.2) 25 (0.3)

Length for Additional Gas m (ft) 7.5 (24.6) 10.0 (32.8)

Drain Hose

Indoor Heat

Exchanger

Outdoor

Heat

Exchanger

Air Filter

Power Supply Cord A Nil Nil

Indoor

Operation

Range

Outdoor

Operation

Range

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. Standby power consumption ≤10.0w (when switched OFF by remote control, except under self protection control).

6. Specifications are subjected to change without prior notice for further improvement.

Inner Diameter mm 16.7 16.7

Length mm 650 650

Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat)

Fin Type Slit Fin Slit Fin

Row × Stage × FPI 2 × 17 × 21 2 × 17 × 21

Size (W × H × L) mm 836.5 × 357 × 25.4 836.5 × 357 × 25.4

Fin Material Aluminium Aluminium

Fin Type Corrugated Fin (Pre Coat) Corrugated Fin (Pre Coat)

Row × Stage × FPI 2 × 31 × 19 2 × 31 × 19

Size (W × H × L) mm 36.4 × 651 × 854.5:824.5 36.4 × 651 × 904.5:874.5

Material Polypropelene Polypropelene

Type One-touch One-touch

Power Supply Indoor Indoor

Thermostat Electronic Contol Electronic Contol

Protection Device Electronic Contol Electronic Contol

Dry Bulb Wet Bulb Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

Indoor CS-Z50TKEW / CS-XZ50TKEW CS-Z71TKEW

Outdoor CU-Z50TKE CU-Z71TKE

Maximum °C 32 23 32 23

Minimum °C 16 11 16 11

Maximum °C 30 – 30 –

Minimum °C 16 – 16 –

Maximum °C 43 26 43 26

Minimum °C -10 – -10 –

Maximum °C 24 18 24 18

Minimum °C -15 -16 -15 -16

 Multi Split Combination Possibility:

o A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E12SBE, CU-2E15SBE,

CU-2E18SBE.

o A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E23SBE, CU-3E18PBE.

CONNECTABLE INDOOR UNIT CU-2E12SBE CU-2E15SBE CU-2E18SBE CU-3E23SBE CU-3E18PBE

ROOM A B A B A B A B C A B C

1.6kW CS-MZ16TKE ● ● ● ● ● ● ● ● ● ● ● ●

2.0kW

2.5kW

3.5kW

Wall

4.2kW CS-Z42TKEW – – – – ● ● ● ● ● ● ● ●

5.0kW

7.1kW CS-Z71TKEW – – – – – – – – – – – –

Capacity range of connectable units

1 room maximum pipe length (m) 20 20 20 25 25

Allowable elevation (m) 10 10 10 15 15

Total allowable pipe length (m) 30 30 30 60 50

Total pipe length for maximum

Pipe length

Remarks for CU-2E12SBE / CU-2E15SBE / CU-2E18SBE

1. The total nominal cooling capacity of indoor unit that will be connected to outdoor unit must be within connectable capacity range of indoor

Remarks for CU-3E23SBE

1. The total nominal cooling capacity of indoor unit that will be connected to outdoor unit must be within connectable capacity range of indoor

chargeless length (m)

Additional gas amount over

chargeless length (g/m)

unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-2E15SBE. (Total nominal capacity of indoor units is between

3.2kW to 5.6kW)

1) Two CS-Z20TKEW only. (Total nominal cooling capacity is 4.0kW)

unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-3E23SBE. (Total nominal capacity of indoor units is between

4.8kW to 10.0kW)

1) Two CS-Z25TKEW only. (Total nominal cooling capacity is 5.0kW)

CS-Z20TKEW

CS-XZ20TKEW

CS-Z25TKEW

CS-XZ25TKEW

CS-Z35TKEW

CS-XZ35TKEW

CS-Z50TKEW

CS-XZ50TKEW

● ● ● ● ● ● ● ● ● ● ● ●

– – – – ● ● ● ● ● ● ● ●

From 3.2kW to

5.6kW

20 20 20 30 30

15 15 15 20 20

From 3.2kW to

5.6kW

From 3.2kW to

7.5kW

From 4.8kW to 10.0kW From 4.8kW to 9.0kW

Note: “●” : Available

 Multi Split Combination Possibility:

o A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23PBE, CU-4E27PBE. o A single outdoor unit enables air conditioning of up to five separate rooms for CU-5E34PBE.

CONNECTABLE INDOOR UNIT CU-4E23PBE CU-4E27PBE CU-5E34PBE

ROOM A B C D A B C D A B C D E

1.6kW CS-MZ16TKE ● ● ● ● ● ● ● ● ● ● ● ● ●

2.0kW

2.5kW

3.5kW

Wall

4.2kW CS-Z42TKEW ● ● ● ● ● ● ● ● ● ● ● ● ●

5.0kW

7.1kW CS-Z71TKEW – – – – ● ● ● ● ● ● ● ● ●

Capacity range of connectable units From 4.8kW to 11.0kW From 4.8kW to 13.6kW From 4.8kW to 17.5kW

1 room maximum pipe length (m) 25 25 25

Allowable elevation (m) 15 15 15

Total allowable pipe length (m) 70 70 80

Total pipe length for maximum

Pipe length

Remarks for CU-4E23PBE / CU-4E27PBE / CU-5E34PBE

1. The total nominal cooling capacity of indoor unit that will be connected to outdoor unit must be within connectable capacity range of indoor

chargeless length (m)

Additional gas amount over

chargeless length (g/m)

unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-4E27PBE. (Total nominal capacity of indoor units is between

4.5kW to 13.6kW)

1) Two CS-Z25TKEW only. (Total nominal cooling capacity is 5.0kW)

CS-Z20TKEW

CS-XZ20TKEW

CS-Z25TKEW

CS-XZ25TKEW

CS-Z35TKEW

CS-XZ35TKEW

CS-Z50TKEW

CS-XZ50TKEW

● ● ● ● ● ● ● ● ● ● ● ● ●

40 45 45

20 20 20

Note: “●” : Available

4. Features

 Inverter Technology

o Wider output power range o Energy saving o Quick Cooling o Quick Heating o More precise temperature control

 Environment Protection

o Non-ozone depletion substances refrigerant (R32)

 Long Installation Piping

o Long piping up to 15 meters (0.75 ~ 1.75HP), 20 meters (2.0HP) and 30 meters (2.5HP) during single split

connection only

 Easy to use remote control

 Quality Improvement

o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor o Noise prevention during soft dry operation

 Operation Improvement

o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature quickly o 24-hour timer setting

 Serviceability Feature

o Activation and Deactivation Method for Heating Only Mode o Breakdown Self Diagnosis function

5. Location of Controls and Components

5.1 Indoor Unit

Horizontal airflow direction louver

Do not adjust by hand.

Human activity

sensor

Vertical airflow direction louver

Do not adjust by hand.

5.2 Outdoor Unit

Front panel

Air Filters

Aluminium fin

Indicator

POWER

TIMER

ECONAVI

nanoe

(White)

Auto OFF/ON button

Use when remote control is misplaced or a malfunction occurs.

Sunlight Sensor and Remote Control Receiver

5.3 Remote Control

ECONAVI operation

Temperature setting

Sleep mode operation

Remote control

display

Operation mode

Powerful/Quiet

operation

Check

Transmitter

OFF/ON nanoe operation

Mild dry operation

Airflow direction selection

Fan speed selection

Timer setting Clock setting

6. Dimensions

6.1 Indoor Unit

6.1.1 CS-Z20TKEW CS-Z25TKEW CS-Z35TKEW CS-Z42TKEW CS-XZ20TKEW CS-XZ25TKEW CS-XZ35TKEW

(194)

Air intake

direction

919

295

Left piping

hole

Air outlet direction

2 ±0.5

Gas side Liquid side

2 ±0.5

Right piping

6060

139149

160

194

hole

Installation plate

Indoor unit external dimensions line

(41-61)410

Relative position between the indoor unit and the installation plate <Front View>

496.6

460460

Left piping hole

128

PIPE HOLE CENTER

128mm TO PIPE HOLE CENTER

PIPE HOLE CENTER

128mm TO PIPE HOLE CENTER

128

266 266

Right piping hole

16.4

264.6

Unit: mm

6.1.2 CS-Z50TKEW CS-Z71TKEW CS-XZ50TKEW

Air intake

direction

42.6

Left piping

hole

Air outlet direction

1120

1-21-2

135

Liquid side Gas side

135

236

Right piping

hole

42.6

160

302

(41-61)

410

Relative position between the indoor unit and the installation plate <Front View>

Installation plate

Indoor unit external dimensions line

741.4

560 560

Left piping hole

266

320

270

128

266

Right piping hole

16.5

264.3

Unit: mm

6.2 Outdoor Unit

6.2.1 CU-Z20TKE CU-Z25TKE

Space necessary for

installation

100 mm

(104.7)

780

570.3

67.6

60.5104.9

100 mm

1000 mm

Anchor Bolt Pitch

570

320

Unit: mm

6.2.2 CU-Z35TKE CU-Z42TKE

Space necessary for

installation

100 mm

1000 mm

22 (124) (62.6)

824 68.7

540 160

85.5

155.2 34.3

2-way valve at Liquid side (High Pressure)

3-way valve at Gas side (Low Pressure)

542

(18)

69.5 61.6

167

330

28939

Anchor Bolt Pitch

Unit : mm

330 × 540

(20)

3-way valve at Gas side (Low Pressure)

2-way valve at Liquid si de (High Pressure)

37 299

619

6.2.3 CU-Z50TKE CU-Z71TKE

Space necessary for

installation

100 mm

(131)

875

61334.7

131

3582

Unit: mm

1000 mm

Anchor Bolt Pitch

360.5 × 613

7.7

360.5

2-way valve at Liquid side (High Pressure)

3-way valve at Gas side (Low Pressure)

695

7570.5 (25)

320

386

7. Refrigeration Cycle Diagram

7.1 CS-Z20TKEW CU-Z20TKE CS-Z25TKEW CU-Z25TKE CS-Z35TKEW CU-Z35TKE CS-Z42TKEW CU-Z42TKE CS-XZ20TKEW CU-Z20TKE CS-XZ25TKEW CU-Z25TKE CS-XZ35TKEW CU-Z35TKE

INDOOR OUTDOOR

INTAKE

AIR

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 2

PIPE

TEMP.

SENSOR 1

LIQUID

SIDE

2-WAY

VALV E

GAS

SIDE

MUFFLER

EXPANSION

VALV E

STRAINER

AIR

TEMP.

SENSOR

CONDENSER

PIPE

TEMP.

SENSOR

3-WAY

VALV E

COOLING HEATING

4-WAYS VALVE

MUFFLER

TAN K

SENSOR

COMPRESSOR

7.2 CS-Z50TKEW CU-Z50TKE CS-Z71TKEW CU-Z71TKE CS-XZ50TKEW CU-Z50TKE

INDOOR OUTDOOR

INTAKE

AIR

TEMP.

SENSOR

HEAT EXCHANGER

(EVAPORATOR)

PIPE

TEMP.

SENSOR 2

PIPE

TEMP.

SENSOR 1

LIQUID

SIDE

2-WAY VALV E

GAS

SIDE

3-WAY VALV E

MUFFLER

(Z71TKE only)

4-WAYS VALVE

EXPANSION

VALV E

STRAINER

PROCESS

PIPE

TEMP.

SENSOR

TUBE

CONDENSER

RECEIVER

AIR

TEMP.

SENSOR

COOLING HEATING

TAN K

SENSOR

COMPRESSOR

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