Panasonic CS-DZ25VKE, CS-PZ50VKE, CS-PZ25VKE, CS-DZ35VKE, CS-UZ35VKE Service Manual

...

Order No: PAPAMY1901021CE

Indoor Unit Outdoor Unit

R32

REFRIGERANT

R32

REFRIGERANT

FAN SPEED

CS-DZ25VKE CS-DZ35VKE CS-DZ50VKE

CS-PZ25VKE CS-PZ35VKE

CS-PZ50VKE CS-UZ25VKE CS-UZ35VKE CS-UZ50VKE

CU-DZ25VKE CU-DZ35VKE CU-DZ50VKE

CU-PZ25VKE CU-PZ35VKE

CU-PZ50VKE CU-UZ25VKE CU-UZ35VKE CU-UZ50VKE

Destination

Europe

Turkey

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.

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.

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

R32 REFRIGERANT

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.

– This Air Conditioner contains and operates with refrigerant R32.

IMPORTANT SAFETY NOTICE

PRECAUTION OF LOW TEMPERATURE

CAUTION

TABLE OF CONTENTS

PAGE PAGE

1. Safety Precautions ............................................. 3

2. Precaution for Using R32 Refrigerant .............. 6

3. Specifications ................................................... 11

4. Features ............................................................. 29

5. Location of Controls and Components .......... 30

5.1 Indoor Unit .................................................. 30

5.2 Outdoor Unit ............................................... 30

5.3 Remote Control .......................................... 30

6. Dimensions ....................................................... 31

6.1 Indoor Unit & Remote Control .................... 31

6.2 Outdoor Unit ............................................... 33

7. Refrigeration Cycle Diagram ........................... 35

8. Block Diagram .................................................. 36

8.1 CS-DZ25VKE CU-DZ25VKE

CS-DZ35VKE CU-DZ35VKE CS-PZ25VKE CU-PZ25VKE CS-PZ35VKE CU-PZ35VKE CS-UZ25VKE CU-UZ25VKE

CS-UZ35VKE CU-UZ35VKE ..................... 36

8.2 CS-DZ50VKE CU-DZ50VKE

CS-PZ50VKE CU-PZ50VKE

CS-UZ50VKE CU-UZ50VKE ..................... 37

9. Wiring Connection Diagram ............................ 38

9.1 Indoor Unit .................................................. 38

9.2 Outdoor Unit ............................................... 40

10. Electronic Circuit Diagram .............................. 42

10.1 Indoor Unit .................................................. 42

10.2 Outdoor Unit ............................................... 44

11. Printed Circuit Board ....................................... 46

11.1 Indoor Unit .................................................. 46

11.2 Outdoor Unit ............................................... 49

12. Installation Instruction ..................................... 51

12.1 Select the Best Location ............................. 51

12.2 Indoor Unit .................................................. 52

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

13. Installation and Servicing Air Conditioner

using R32 .......................................................... 62

13.1 About R32 Refrigerant ................................ 62

13.2 Characteristics of R32 Refrigerant ............. 62

13.3 Refrigerant piping installation • Tools used

in services ................................................... 64

13.4 New installation, Relocation,

Repairing of Refrigerant Cycle System

The Procedures .......................................... 68

13.5 Piping installation of R32 ............................ 69

13.6 Installation, Relocation, and Service .......... 70

13.7 Repairing of refrigerant cycle /

Brazing point ............................................... 74

13.8 <Reference> Analysis method for no error

code, no cooling / no warming .................... 80

14. Operation Control .............................................82

14.1 Basic Function ............................................82

14.2 Indoor Fan Motor Operation .......................83

14.3 Outdoor Fan Motor Operation ....................84

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

14.5 Timer Control ..............................................86

14.6 Sleep Mode Operation ...............................87

14.7 Random Auto Restart Control ....................88

14.8 Indication Panel ..........................................88

14.9 Quiet Operation (Cooling Mode/Cooling

Area of Dry Mode) ......................................88

14.10 Quiet Operation (Heating) ..........................89

14.11 Powerful Mode Operation ...........................89

15. Protection Control ............................................90

15.1 Protection Control for All Operations ..........90

15.2 Protection Control for Cooling & Soft Dry

Operation ....................................................92

15.3 Protection Control for Heating Operation ...93

16. Servicing Mode .................................................95

16.1 Auto OFF/ON Button ..................................95

16.2 Heat Only Operation ...................................96

16.3 Remote Control Button ...............................97

17. Troubleshooting Guide ................................. 100

17.1 Refrigeration Cycle System ..................... 100

17.2 Relationship Between the Condition of the Air Conditioner and Pressure and Electric

Current ..................................................... 101

17.3 Breakdown Self Diagnosis Function ........ 102

17.4 Error Codes Table ................................... 103

17.5 Self-diagnosis Method ............................. 105

18. Disassembly and Assembly Instructions ... 133

18.1 CS-DZ25VKE CS-DZ35VKE CS-PZ25VKE CS-PZ35VKE

CS-UZ25VKE CS-UZ35VKE .................. 133

18.2 CS-DZ50VKE CS-PZ50VKE

CS-UZ50VKE .......................................... 138

18.3 Outdoor Electronic Controller Removal

Procedure ................................................ 143

19. Technical Data ............................................... 145

19.1 Cool Mode Performance Data ................. 145

19.2 Heat Mode Performance Data ................. 147

20. Service Data ................................................... 149

20.1 Cool Mode Outdoor Air Temperature

Characteristic ........................................... 149

20.2 Heat Mode Outdoor Air Temperature

Characteristic ........................................... 155

20.3 Piping Length Correction Factor .............. 161

21. Exploded View and Replacement Parts

List .................................................................. 163

21.1 Indoor Unit ............................................... 163

21.2 Outdoor Unit ............................................ 169

 Specifications, designs and contents in this Service Manual are subject to change without notice.

1. Safety Precautions

 Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Confirm the type of gas used before installation.  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 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 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

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

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

Symbol with white background denotes item that is PROHIBITED.

Symbol with dark background denotes item that must be carried out.

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.

CAUTION

This symbol shows type of flammable refrigerant contained in the system.

This symbol shows that the Installation 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.

 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.

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.

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.

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

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

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

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.

 For R410A/R32 model, use piping, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut

11.

and 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.

WARNING

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

12. 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

13. 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

14.

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

15. 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

16. 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

17. 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

18. 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),

19.

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

20.

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

21.

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

22. 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

23. 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.

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

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

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

27. 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)

The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than A and without any continuously operating ignition sources.

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

death.

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

30. 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.

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

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

(m2) [refer Table A]

min

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.

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.

CAUTION

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 x 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 (1.0 ~ 1.5HP), 16A (2.0HP), 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 (1.0 ~ 2.0HP), 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.

10. Keep any required ventilation openings clear of obstruction.

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

11. (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.

12.

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

13. may break and cause refrigerant gas leakage.

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

14.

(1.0 ~ 1.5HP), 3 x 2.5 mm2 (2.0HP) 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

The appliance shall be stored, installed and operated in a well ventilated room with indoor floor area larger than A and without any continuously operating ignition source.

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

death. Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are

special.

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.

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

Ensure that foreign matter (oil, water, etc.) does not enter the piping.

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

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.

5. Any personnel conducting an operation, servicing or maintenance on a system or associated parts of the equipment should be trained

and certified.

Any part of refrigerating circuit (evaporators, air coolers, AHU, condensers or liquid receivers) or piping should not be located in the

6. proximity of heat sources, open flames, operating gas appliance or an operating electric heater.

The user/owner or their authorized representative shall regularly check the alarms, mechanical ventilation and detectors, at least once a

7. 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.

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,

10. 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. 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,

11. 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 further training to maintain this expertise.

Air-conditioner piping in the occupied space shall be installed in such a way to protect against accidental damage in operation and

12. service.

(m2) [refer Table A]

min

13. Precautions shall be taken to avoid excessive vibration or pulsation to refrigerating piping.

Ensure protection devices, refrigerating piping and fittings are well protected against adverse environmental effects (such as the danger

14. of water collecting and freezing in relief pipes or the accumulation of dirt and debris).

Expansion and contraction of long runs piping in refrigerating systems shall be designed and installed securely (mounted and guarded)

15. to minimize the likelihood hydraulic shock damaging the system.

16. Protect the refrigerating system from accidental rupture due to moving furniture or reconstruction activities.

To ensure no leaking, field-made refrigerant joints indoors shall be tightness tested. The test method shall have a sensitivity of 5 grams

17.

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.

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.  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.

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.  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.

 Ensure the actual refrigerant charge size is in accordance with the room size within which the refrigerant containing parts are

installed.  Ensure refrigerant charge not to leak. 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

The following leak detection methods are deemed acceptable for all refrigerant systems.

 No leaks shall be detected when using detection equipment with a capability of 10  Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need

recalibration. (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.

b) 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.

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.

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

h) i)

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

-6

Pa•m3/s or better, for example, a helium sniffer.

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

Indoor Model CS-DZ25VKE CS-DZ35VKE

Outdoor Model CU-DZ25VKE CU-DZ35VKE

Performance Test Condition EUROVENT EUROVENT

Power Supply

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

Capacity

Running Current A – 3.05 – – 4.90 –

Input Power W 250 690 910 255 1.10k 1.30k

Annual Consumption – 345 – – 550 –

EER CLASS – A – – B –

EER

Cooling

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Heating

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Low Temp. : Capacity (kW) / I.Power (W) / COP 2.61 / 910 / 2.87 3.19 / 1.12k / 2.85

Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 2.14 / 850 / 2.52 2.60 / 1.03k / 2.52

Max Current (A) / Max Input Power (W) 4.8 / 1.03k 7.0 / 1.58k

Pdesign kW 2.5 3.4

SEER (W/W) 5.8 5.6

Annual

Consumption

Class A+ A+

Power Factor % – 98 – – 98 –

Capacity

Running Current A – 3.45 – – 4.60 –

Input Power W 195 770 1.03k 195 1.04k 1.27k

COP CLASS – A – – A –

COP

Pdesign kW 1.9 2.4

Tbivalent °C -10 -10

SCOP (W/W) 4.1 4.1

Annual

Consumption

Class A+ A+

Power Factor % – 97 – – 98 –

Starting Current (A) 3.45 4.90

Phase, Hz Single, 50 Single, 50

V 230 230

kW 0.85 2.50 3.00 0.85 3.40 3.90

BTU/h 2900 8530 10200 2900 11600 13300

kcal/h 730 2150 2580 730 2920 3350

W/W 3.40 3.62 3.30 3.33 3.09 3.00

BTU/hW 11.60 12.36 11.21 11.37 10.55 10.23

kcal/hW 2.92 3.12 2.84 2.86 2.65 2.58

kWh 151 213

dB-A 37 / 26 / 20 38 / 30 / 20

Power Level dB 53 / – / – 54 / – / –

dB-A 48 / – / – 48 / – / –

Power Level dB 64 / – / – 64 / – / –

kW 0.80 3.15 3.60 0.80 3.84 4.40

BTU/h 2730 10700 12300 2730 13100 15000

kcal/h 690 2710 3100 690 3300 3780

W/W 4.10 4.09 3.50 4.10 3.69 3.46

BTU/hW 14.00 13.90 11.94 14.00 12.60 11.81

kcal/hW 3.54 3.52 3.01 3.54 3.17 2.98

kWh 649 820

dB-A 37 / 27 / 24 38 / 33 / 25

Power Level dB 53 / – / – 54 / – / –

dB-A 49 / – / – 50 / – / –

Power Level dB 64 / – / – 65 / – / –

Indoor Model CS-DZ25VKE CS-DZ35VKE

Outdoor Model CU-DZ25VKE CU-DZ35VKE

Type Hermetic Motor / Rotary Hermetic Motor / Rotary

Compressor

Motor Type Brushless (6-poles) Brushless (6-poles)

Output Power W 500 500

Type Cross-flow Fan Cross-flow Fan

Material ASG20K1 ASG20K1

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

Input Power W 47.3 47.3

Output Power W 40 40

QLo

Indoor Fan

Speed

SHi

Cool rpm 580 580

Heat rpm 710 770

Cool rpm 730 800

Heat Rpm 770 950

Cool rpm 900 960

Heat rpm 950 1050

Cool rpm 1080 1120

Heat rpm 1140 1160

Cool rpm 1130 1220

Heat rpm 1190 1230

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 820 860

Heat rpm 820 860

Moisture Removal L/h (Pt/h) 1.5 (3.2) 2.0 (4.2)

/min (ft3/min) 4.90 (173) 4.90 (173)

/min (ft3/min) 6.52 (230) 7.28 (257)

/min (ft3/min) 8.41 (297) 9.00 (318)

/min (ft3/min) 10.30 (365) 10.70 (380)

/min (ft3/min) 10.84 (383) 11.81 (417)

/min (ft3/min) 30.50 (1075) 31.10 (1100)

Indoor Airflow

Outdoor

Airflow

QLo

SHi

Cool m

Heat m3/min (ft3/min) 6.30 (222) 6.95 (245)

Cool m

Heat m3/min (ft3/min) 6.95 (245) 8.90 (314)

Cool m

Heat m3/min (ft3/min) 8.95 (316) 10.03 (354)

Cool m

Heat m3/min (ft3/min) 11.00 (390) 11.20 (395)

Cool m

Heat m3/min (ft3/min) 11.49 (406) 11.92 (421)

Cool m

Heat m3/min (ft3/min) 30.50 (1075) 31.10 (1100)

Control Device Expansion Valve Expansion Valve

Refrigerant

Cycle

Refrigerant Oil cm3 Ester Oil VG74 (260) Ester Oil VG74 (260)

Refrigerant Type g (oz) R32, 580 (20.5) R32, 670 (23.7)

GWP 675 675

F-Gas

CO2eq (ton)

(Precharged Amount /

0.392 / 0.442 0.452 / 0.503

Maximum Amount)

Indoor Model CS-DZ25VKE CS-DZ35VKE

Outdoor Model CU-DZ25VKE CU-DZ35VKE

Height

(I/D / O/D)

Dimension Unit

Weight Net (I/D / O/D) kg (lb) 8 (18) / 26 (57) 8 (18) / 27 (60)

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

Indoor Operation

Outdoor Operation

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

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

3. Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor 2/1°C.

4. Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature of 20°C, outdoor -7/-8°C.

5. Standby power consumption ≤ 2.0W (when switched OFF by remote control, except under self-protection control).

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

7. If the EUROVENT Certified models can be operated under the “extra-low” temperature condition, -7°C DB and -8°C WB temperature with

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

Row × Stage × FPI 2 × 15 × 17 2 × 15 × 17

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

Row × Stage × FPI 1 × 24 × 17 1 × 24:12 × 17

Size (W × H × L) mm 18.2 × 504 × 710 36.4 × 504 × 713:684

Power Supply Indoor Indoor

Power Supply Cord Nil Nil

Thermostat Electronic Contol Electronic Contol

Protection Device Electronic Contol Electronic Contol

Range

temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)

(44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)

rated voltage 230V shall be used.

season. Other fiche data indicates in an attached sheet.

Width

(I/D / O/D)

Depth

(I/D / O/D)

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

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

Fin Type Corrugated Fin Corrugated Fin

Material Polypropelene Polypropelene

Type One-touch One-touch

Dry Bulb Wet Bulb Dry Bulb Wet Bulb

Cooling

Heating

Cooling

Heating

mm (inch) 290 (11-7/16) / 542 (21-11/32) 290 (11-7/16) / 542 (21-11/32)

mm (inch) 850 (33-15/32) / 780 (30-23/32) 850 (33-15/32) / 780 (30-23/32)

mm (inch) 199 (7-27/32) / 289 (11-13/32) 199 (7-27/32) / 289 (11-13/32)

Maximum °C (°F) 32 (89.6) 23 (73.4) 32 (89.6) 23 (73.4)

Minimum °C (°F) 16 (60.8) 11 (51.8) 16 (60.8) 11 (51.8)

Maximum °C (°F) 30 (86.0) – 30 (86.0) –

Minimum °C (°F) 16 (60.8) – 16 (60.8) –

Maximum °C (°F) 43 (109.4) 26 (78.8) 43 (109.4) 26 (78.8)

Minimum °C (°F) 5 (41.0) – 5 (41.0) –

Maximum °C (°F) 24 (75.2) 18 (64.4) 24 (75.2) 18 (64.4)

Minimum °C (°F) -15 (5.0) -16 (3.2) -15 (5.0) -16 (3.2)

Indoor Model CS-DZ50VKE

Outdoor Model CU-DZ50VKE

Performance Test Condition EUROVENT

Power Supply

Min. Mid. Max.

Capacity

Running Current A – 7.60 –

Input Power W 285 1.68k 1.89k

Annual Consumption – 840 –

EER CLASS – C –

EER

Cooling

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Running Current A – 7.10 –

Heating

ErP

Indoor Noise (H / L / QLo)

Outdoor Noise (H / L / QLo)

Low Temp. : Capacity (kW) / I.Power (W) / COP 5.43 / 2.16k / 2.51

Extr Low Temp. : Capacity (kW) / I.Power (W) / COP 4.58 / 2.09k / 2.19

Max Current (A) / Max Input Power (W) 10.7 / 2.44k

Pdesign kW 5.0

SEER (W/W) 6.0

Annual

Consumption

Class A+

Power Factor % – 96 –

Capacity

Input Power W 350 1.57k 2.44k

COP CLASS – B –

COP

Pdesign kW 4.0

Tbivalent °C -10

SCOP (W/W) 4.1

Annual

Consumption

Class A+

Power Factor % – 96 –

Starting Current (A) 7.60

Phase, Hz Single, 50

V 230

kW 0.98 5.00 5.40

BTU/h 3340 17100 18400

kcal/h 840 4300 4640

W/W 3.44 2.98 2.86

BTU/hW 11.72 10.18 9.74

kcal/hW 2.95 2.56 2.46

kWh 292

dB-A 44 / 37 / 34

Power Level dB 60 / – / –

dB-A 48 / – / –

Power Level dB 63 / – / –

kW 0.98 5.40 7.50

BTU/h 3340 18400 25600

kcal/h 840 4640 6450

W/W 2.80 3.44 3.07

BTU/hW 9.54 11.72 10.49

kcal/hW 2.40 2.96 2.64

kWh 1366

dB-A 44 / 37 / 34

Power Level dB 60 / – / –

dB-A 49 / – / –

Power Level dB 64 / – / –

Indoor Model CS-DZ50VKE

Outdoor Model CU-DZ50VKE

Type Hermetic Motor / Rotary

Compressor

Motor Type Brushless (4-poles)

Output Power W 900

Type Cross-flow Fan

Material ASG20K1

Motor Type DC (8-poles)

Input Power W 47.3

Output Power W 40

Cool rpm 900

Heat rpm 960

Cool rpm 960

Heat rpm 1030

Cool rpm 1090

Heat rpm 1170

Cool rpm 1230

Heat rpm 1320

Cool rpm 1300

Heat rpm 1370

Indoor Fan

Speed

QLo

SHi

Type Propeller Fan

Material PP

Motor Type DC (8-poles)

Input Power W –

Outdoor Fan

Output Power W 40

Speed Hi

Cool rpm 820

Heat rpm 820

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

/min (ft3/min) 8.33 (294)

/min (ft3/min) 8.93 (315)

/min (ft3/min) 10.23 (361)

/min (ft3/min) 11.60 (410)

/min (ft3/min) 12.33 (435)

/min (ft3/min) 32.7 (1155)

Indoor Airflow

Outdoor

Airflow

QLo

SHi

Cool m

Heat m3/min (ft3/min) 8.93 (315)

Cool m

Heat m3/min (ft3/min) 9.63 (340)

Cool m

Heat m3/min (ft3/min) 11.03 (389)

Cool m

Heat m3/min (ft3/min) 12.50 (440)

Cool m

Heat m3/min (ft3/min) 13.03 (460)

Cool m

Heat m3/min (ft3/min) 32.7 (1155)

Control Device Expansion Valve

Refrigerant

Cycle

Refrigerant Oil cm3 FW50S (450)

Refrigerant Type g (oz) R32, 1.14k (40.2)

GWP 675

F-Gas

CO2eq (ton)

(Precharged Amount /

Maximum Amount)

0.770 / 0.845

Indoor Model CS-DZ50VKE

Outdoor Model CU-DZ50VKE

Height

(I/D / O/D)

Dimension Unit

Weight Net (I/D / O/D) kg (lb) 9 (20) / 36 (79)

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

Standard Length m (ft) 5.0 (16.4)

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

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

Piping

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

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