Panasonic CS-TZ20ZKEW Air Conditioner Instruction Manual

Panasonic CS-TZ20ZKEW Air Conditioner

Product Information

Specifications

• Model No. Indoor Unit: CS-TZ20ZKEW, CS-TZ25ZKEW, CS-TZ35ZKEW, CS-TZ42ZKEW, CS-TZ50ZKEW, CS-RZ25ZKEW, CS-RZ35ZKEW, CS-RZ50ZKEW, CS-MTZ16ZKE
• Model No. Outdoor Unit Single Split: CU-TZ20ZKE, CU-TZ25ZKE, CU-TZ35ZKE, CU-TZ42ZKE, CU-TZ50ZKE, CU-RZ25ZKE, CU-RZ35ZKE, CU-RZ50ZKE
• Model No. Multi Split: CU-2Z35TBE, CU-2Z41TBE, CU-2Z50TBE, CU-3Z52TBE, CU-3Z68TBE, CU-4Z68TBE, CU-4Z80TBE, CU-5Z90TBE, CU-2TZ41TBE, CU-2TZ50TBE, CU-3TZ52TBE

A new built-in Network Adaptor that allows you to control your heat pump from anywhere.

• Flexibility to connect Single Split System or Multi Split System Air Conditioner to suit your needs.
• For complete product features, please refer to the catalog.

Product Usage Instructions

Quick Guide

1. Inserting the batteries:
   • Press CLOCK, then press to set the time.
   • Pull out the back cover of the remote control.
   • Insert AAA or R03 batteries.
   • Close the cover.
2. Clock setting:
   • Press to confirm.

Basic operation

1. Press to start/stop the operation.
2. Press to select the desired mode (AUTO, DRY, HEAT, COOL).
3. Press TEMP UP or TEMP DOWN to select the desired temperature.

FAQ

Q: Can children use this appliance?
A: This appliance can be used by children aged 8 years and above and persons with reduced physical, sensory, or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning the use of the appliance in a safe way and understand the hazards involved. However, children should not play with the appliance, and cleaning and user maintenance should not be done by children without supervision.

Model

Model No

Indoor Unit

• CS-TZ20ZKEW
• CS-TZ25ZKEW
• CS-TZ35ZKEW
• CS-TZ42ZKEW
• CS-TZ50ZKEW
• CS-RZ25ZKEW
• CS-RZ35ZKEW
• CS-RZ50ZKEW
• CS-MTZ16ZKE
  

Outdoor Unit

Single Split

• CU-TZ20ZKE
• CU-TZ25ZKE
• CU-TZ35ZKE
• CU-TZ42ZKE
• CU-TZ50ZKE
• CU-RZ25ZKE
• CU-RZ35ZKE
• CU-RZ50ZKE

Multi Split

• CU-2Z35TBE
• CU-2Z41TBE
• CU-2Z50TBE
• CU-3Z52TBE
• CU-3Z68TBE
• CU-4Z68TBE
• CU-4Z80TBE
• CU-5Z90TBE
• CU-2TZ41TBE
• CU-2TZ50TBE
• CU-3TZ52TBE

Before operating the unit, please read these operating instructions thoroughly and keep them for future reference. Before installation, the installer should:

• Read the Installation Instructions, then request the customer keep them for future reference.
• Remove the remote control packed with the indoor unit.

Quick Guide

A new built-in Network Adaptor that allows you to control your heat pump from anywhere.

• Flexibility to connect Single Split System or Multi Split System Air Conditioner to suit your needs.
• For complete product features, please refer to catalog.

Inserting the batteries

1. Pull out the back cover of remote control.
2. Insert AAA or R03 batteries.
3. Close the cover.

A. Clock setting

1. Press , then press to set the time.
   • Press CLOCK for approximately 5 seconds to show the time as 12-hour (am/pm) or 24-hour.
2. Press to confirm.

B. Basic operation

1. Press to start/stop the operation.

   • When the unit is ON, disappears from the remote control display.

2. Press to select the desired mode.

3. Press TEMP UP, TEMP DOWN to select the desired temperature.
   Selection range: 16.0 °C ~ 30.0 °C / 60 °F ~ 86 °F.

   • Press for approximately 10 seconds to show the temperature as °C or °F.

Accessories

• Remote control
• AAA or R03 batteries × 2
• Remote control holder
• Screws for remote control holder × 2

The illustrations in this manual are for explanation purposes only and may differ from the actual unit. They are subject to change without notice.

Safety Precautions

To prevent personal injury, injury to others or property damage, please comply with the following:

Incorrect operation due to failure to follow the instructions below may cause harm or damage, the seriousness of which is classified as below:

• This appliance is not intended for accessibility by the general public.
• WARNING This sign warns of death or serious injury.
• CAUTION This sign warns of injury or damage to property.

The instructions to be followed are classified by the following symbols:

WARNING

Indoor unit and outdoor unit

• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be done by children without supervision.
• Please consult an authorized dealer or specialist to clean the internal parts, repair, install, remove, disassemble and reinstall the unit. Improper installation and handling will cause leakage, electric shock or fire.
• Confirm with authorized dealer or specialist on usage of any specified refrigerant type. Using refrigerant type other than the specified may cause product damage, burst injury etc.
• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• Any unfit method or using incompatible material may cause product damage, burst and serious injury.
• Do not install the unit in a potentially explosive or flammable atmosphere.
• Failure to do so could result in fire.
• Do not insert your fingers or other objects into the air conditioner indoor or outdoor unit, rotating parts may cause injury.
• Do not touch the outdoor unit during lightning, it may cause electric shock.
• Do not expose yourself directly to cold air for a long period to avoid excess cooling.
• Do not sit or step on the unit, you may fall down accidentally.

Remote control
Do not allow infants and small children to play with the remote control to prevent them from accidentally swallowing the batteries.

Power supply
Do not use a modified cord, joint cord, extension cord or unspecified cord to prevent overheating and fire.

To prevent overheating, fire or electric shock:

• • Do not share the same power outlet with other equipment.
  • Do not operate with wet hands.
  • Do not overbend the power supply cord.
  • Do not operate or stop the unit by inserting or pulling out the power plug.

• If the supply cord is damaged, it must be replaced by the manufacturer, service agent or similarly qualified persons to avoid a hazard.

• It is strongly recommended to be installed with an Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD) to prevent electric shock or fire.

To prevent overheating, fire or electric shock:

• Insert the power plug properly.
• Dust on the power plug should be periodically wiped with a dry cloth.
• Stop using the product if any abnormality/failure occurs and disconnect the power plug or turn off the power switch and breaker.
  • (Risk of smoke/fire/electric shock)
  • Examples of abnormality/failure
• The ELCB trips frequently.
• A burning smell is observed.
• Abnormal noise or vibration of the unit is observed.
• Water leaks from the indoor unit.
• The power cord or plug becomes abnormally hot.
• Fan speed cannot be controlled.
• The unit stops running immediately even if it is switched on for operation.
• The fan does not stop even if the operation is stopped.
• Contact your local dealer immediately for maintenance/repair.
• This equipment must be earthed to prevent electrical shock or fire.
• Prevent electric shock by switching off the power supply and unplug:
  • Before cleaning or servicing,
  • When extended non-use, or
  • During abnormally strong lightning activity.

CAUTION

Indoor unit and outdoor unit

• Do not wash the indoor unit with water, benzene, thinner, or scouring powder to avoid damage or corrosion of the unit.

• Do not use it for the preservation of precise equipment, food, animals, plants, artwork, or other objects. This may cause quality deterioration, etc.

• Do not use any combustible equipment in front of the airflow outlet to avoid fire propagation.

• Do not expose plants or pets directly to airflow to avoid injury, etc.

• Do not touch the sharp aluminum fin, sharp parts may cause injury.

• Do not switch ON the indoor unit when waxing the floor. After waxing, aerate the room properly before operating the unit.

• Do not install the unit in oily and smoky areas to prevent damage to the unit.

• Do not dismantle the unit for cleaning purposes to avoid injury.

• Do not step onto an unstable bench when cleaning the unit to avoid injury.

• Do not place a vase or water container on the unit. Water may enter the unit and degrade the insulation. This may cause an electric shock.

• Do not open windows or doors for a long time during operation, it may lead to inefficient power usage and uncomfortable temperature changes.
  Prevent water leakage by ensuring the drainage pipe is:

  • Connected properly,
  • Kept clear of gutters and containers, or
  • Not immersed in water

• After a long period of use or use with any combustible equipment, aerate the room regularly.

• After a long period of use, make sure the installation rack does not deteriorate to prevent the unit from falling.

Remote control
Do not use rechargeable (Ni-Cd) batteries. It may damage the remote control.

To prevent malfunction or damage of the remote control:

• Remove the batteries if the unit is not going to be used for a long period of time.
• New batteries of the same type must be inserted following the polarity stated.

Power supply
Do not disconnect the plug by pulling the cord to prevent electric shock.

WARNING
This appliance is filled with R32 (mildly flammable refrigerant).

If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire.

Indoor unit and outdoor unit

• The appliance shall be installed, and/or operated in a room with floor area larger than Amin (m²) and keep away 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. (Refer to Table A of Installation instructions table for Amin (m²))
• Be aware that refrigerant may not contain an odor, highly recommended to ensure suitable flammable refrigerant gas detectors are present, operating and able to warn of a leak.
• Keep any required ventilation openings clear of obstruction.
• 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.

Precaution for using R32 refrigerant
The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.

• Since the working pressure is higher than that of refrigerant R22 models, some of the piping 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 nuts on the outdoor unit side, and a pipe can be used.
• The mixing of different refrigerants within a system is prohibited. Models that use refrigerant R32 and R410A have different charging port thread diameters to prevent erroneous charging with refrigerant R22 and for safety.
• Therefore, check beforehand. [The charging port thread diameter for R32 and R410A is 1/2 inch.]
• Must always ensure that foreign matter (oil, water, etc.) does not enter the piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc. (Handling of R32 is similar to R410A.)
• The operation, maintenance, repair, and refrigerant recovery should be carried out by trained and certified personnel in the use of flammable refrigerants and as recommended by the manufacturer. Any personnel conducting an operation, servicing, or maintenance on a system or associated parts of the equipment should be trained and certified.
• Any part of the refrigerating circuit (evaporators, air coolers, AHU, condensers, or liquid receivers) or piping should not be located in the proximity of heat sources, open flames, operating gas appliances 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 year, where as required by national regulations, to ensure their correct functioning.
• A logbook shall be maintained. The results of these checks shall be recorded in the logbook.
• 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, 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 requirements of trained and certified personnel are indicated below:
  • Knowledge of legislation, regulations, and standards relating to flammable refrigerants; and,
  • Detailed knowledge of and skills in handling flammable refrigerants, personal protective equipment, refrigerant leakage prevention, handling of cylinders, charging, leak detection, recovery and disposal; and,
  • Able to understand and to apply in practice the requirements in the national legislation, regulations, and Standards; and,
  • Continuously undergo regular and further training to maintain this expertise.
  • Air-conditioner piping in the occupied space shall be installed in such a way as to protect against accidental damage in operation and service.
  • 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 of water collecting and freezing in relief pipes or the accumulation of dirt and debris).
  • Expansion and contraction of long-run piping in refrigerating systems shall be designed and installed securely (mounted and guarded) to minimize the likelihood of hydraulic shock damaging the system.
  • 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 per year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure (>1.04 MPa, max 4.15 MPa). No leak shall be detected.

Installation (Space)

• Products with flammable refrigerants shall be installed according to the minimum room area, Amin (m²) mentioned in Table A of the Installation Instructions.
• In the case of field charge, the effect on refrigerant charge caused by the different pipe lengths has to be quantified, measured and labeled.
• Must ensure the installation of pipe work shall be kept to a minimum. Avoid the use of dented pipes and do not allow acute bending.
• Must ensure that pipe is protected from physical damage.
• Must comply with national gas regulations, state municipal rules, and legislation. Notify relevant authorities under all applicable regulations.
• Must ensure mechanical connections are accessible for maintenance purposes.
• In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
• When disposal of the product, follow the precautions in #12 and comply with national regulations.

Always contact to local municipal office for proper handling.

Servicing

Service personnel

• 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 is by the room size within which the refrigerant-containing parts are installed.
• Ensure refrigerant charges not to leak.
• 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 by an industry-recognized 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.

Work

• Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. 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 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 the work being carried out.
• Avoid working in confined spaces. Always ensure away from the source, at least 2 meters of safety distance, or zoning of free space area of at least 2 meters in radius.
• Wear appropriate protective equipment, including respiratory protection, as conditions warrant.
• Keep all sources of ignition and hot metal surfaces away.

Checking for the 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. nonsparking, adequately sealed or intrinsically safe.
• In case of leakage/spillage, immediately ventilate the 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.

The presence of fire extinguisher

• If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available at hand.
• Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

No ignition sources

• No person carrying out work concerning a refrigerating system that 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. They 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, repair, removal, 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.

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.

Checks to the refrigerating equipment

• Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
• At all times the manufacturer’s maintenance and service guidelines shall be followed.
• If in doubt consult the manufacturer’s technical department for assistance.
• The following checks shall be applied to installations using flammable refrigerants.
  • The actual refrigerant charge is in accordance with the room size within which the refrigerant-containing parts are installed.
  • The ventilation machinery and outlets are operating adequately and are not obstructed.
  • If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
  • Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.
  • Refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance that 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.

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 limited to:
  • That capacitors are discharged: this shall be done safely to avoid the possibility of sparking.
  • That 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 the 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 the manufacturer may result in 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.

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

• No leaks shall be detected using detection equipment with sensitivity to detect leakage of 5g/year of refrigerant or better under a pressure of at least 0.25 times the maximum allowable pressure (>1.04 MPa, max 4.15 MPa), for example, a universal sniffer.
• Electronic leak detectors may be used to detect flammable refrigerants, but the sensitivity may not be adequate or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)
• Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
• Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate percentage of gas (25 % maximum) is confirmed.
• Leak detection fluids are also suitable for use with most refrigerants, for example, bubble method and fluorescent method agents. The use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
• If a leak is suspected, all naked flames shall be removed/extinguished.
• If a leakage of refrigerant is found that requires brazing, all of the refrigerant shall be recovered from the system, or isolated (using shut-off valves) in a part of the system remote from the leak. The precautions in #8 must be followed to remove the refrigerant.

Removal and evacuation

• When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, best practice must be followed since flammability is a consideration. The following procedure shall be adhered to: remove refrigerant -> purge the circuit with inert gas -> evacuate -> purge -> open the circuit by cutting or brazing.
• The refrigerant charge shall be recovered into the correct recovery cylinders.
• The system shall be purged with OFN to render the appliance safe.
• This process may need to be repeated several times.
• Compressed air or oxygen shall not be used for this task.
• Purging shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to the atmosphere, and finally pulling down to a vacuum.
• This process shall be repeated until no refrigerant is within the system.
• When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
• This operation is absolutely vital if brazing operations on the pipe work are to take place.
• Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and there is ventilation available.
  • OFN = oxygen-free nitrogen, a type of inert gas.

Charging procedures

• In addition to conventional charging procedures, the following requirements shall be followed.
  • Ensure that contamination of different refrigerants does not occur when using charging equipment.
  • Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
  • Cylinders shall be kept in an appropriate position according to the instructions.
  • Ensure that the refrigerating system is earthed before 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 refrigerating 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 before commissioning.
• A follow-up leak test shall be carried out before leaving the site.
• An 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, the technician must be 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 before re-use of recovered refrigerant.
• Electrical power must be 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 the 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 the cylinder is situated on the scales before recovery takes place.
  • Start the recovery machine and operate it under instructions.
  • 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 refrigerating system unless it has been cleaned and checked.
• An 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.

Labeling

• Equipment shall be labeled stating that it has been de-commissioned and emptied of refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.

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 is available.
• All cylinders to be used are designated for the recovered refrigerant and labeled 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.
• 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 the 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.

How to Use

To adjust the airflow direction

• Do not adjust the flap by hand.
• For details operation, refer “To Learn More….”

Lateral direction:

• For lateral direction, it is manually adjustable as shown.

To adjust FAN SPEED and QUIET condition

FAN SPEED:

• When FAN AUTO is selected, the fan speed is adjusted automatically according to the operation mode.
• Select the lowest fan speed to have a low-noise operation.

QUIET:

• This operation reduces airflow noise.

To enjoy a fresher and cleaner environment

• This operation provides cleaner air, moisturizes your skin and hair, and deodorizes odors in the room.
• Press nanoe™X to activate this operation, either when the unit is ON or OFF. During nanoe™X operation, the fan speed will follow the remote control setting.
• If nanoe™X is activated before the unit is turned off, the nanoe™X operation will resume when the unit is turned on. This includes when TIMER ON is set.
• Press the button again to cancel.

Multi

• When the unit is turn off, nanoe™X individual operation cannot be performed or will be stopped if other indoor units is activating HEAT mode.

To reach the desired temperature quickly

• This operation is automatically stopped after 20 minutes.
• Press the button again to cancel.

To improve humidity and moisture level (Not applicable for Multi split system)

• This operation reduces air dryness during COOL mode only.
• Press the button again to cancel.

To maximize comfort while sleeping

• This operation provides you with a comfortable environment while sleeping. It will automatically adjust the sleep pattern temperature during the activation period.
• The indoor unit indicator will dim when this operation is activated. This is not applicable if the indicator brightness has been manually dimmed.
• This operation is incorporated with the activation timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours).
• This operation can be set together with a timer. Sleep operation has the priority over OFF timer.
• This operation can be canceled by pressing the respective button until the sleep timer reaches 0.0h.

To set the timer

You can set the timer to turn on and off the unit at 2 different preset time.

• To cancel the timer, press or select the respective setting or , then press .
• If the timer has been canceled manually or due to a power failure, you can restore the timer again. Press or to select the respective setting or , then press .
• The nearest timer setting is displayed and will activate in sequence.
• The timer operation follows the clock setting on the remote control and will repeat daily when the timer has been set. For clock setting, refer to Quick Guide.

To connect to a network

• For Wireless LAN Module operation setup, please refer to Setup Instructions Web Manual.
• If the Wireless LAN LED blinks continuously and you do not want to use the app, press the Wireless LAN button to turn it off.

Note

To Learn More

• Single split system
• Multi-split system

Operation mode

• It is possible to operate the indoor units individually or simultaneously. The priority of operation is placed on the first unit that is turned on.
• During operation, HEAT and COOL modes cannot activate at the same time for different indoor units.
• The power indicator blinks to indicate the indoor unit is standing by for different operation modes.
• AUTO: The POWER indicator blinks at the initial stage.
• The unit will select an operation mode every 10 minutes depending on the setting and room temperature.
• The unit will select an operation mode every 3 hours depending on the setting, room and outdoor temperature.
• HEAT: The POWER indicator blinks at the initial stage. The unit will take some time to warm up.
• If the HEAT mode system has been locked, and other operation mode is selected, the indoor unit stops and the POWER indicator blinks.
• COOL: Provides efficient comfort cooling to suit your needs.
• DRY: Operates at low fan speed for a gentle cooling operation.

Energy-saving temperature setting

You may save energy when operating the unit within the recommended temperature range.

• HEAT: 20.0 °C ~ 24.0 °C / 68 °F ~ 75 °F.
• COOL: 26.0 °C ~ 28.0 °C / 79 °F ~ 82 °F.

Air flow direction

• In COOL/DRY mode:

  • The horizontal flap swings up/down automatically.
  • Once the temperature is achieved, the horizontal flap is fixed at the upper position.

• In HEAT mode:
  The horizontal flap fixed at the predetermined position.

• In COOL/DRY mode:
  The horizontal fl ap swings up/down automatically.

• In HEAT mode:
  The horizontal flap is fixed to the upper position when the discharge air temperature is cold. The horizontal flap swings down automatically when the discharge air temperature is warm.

In MILD DRY (Not applicable for Multi split system):
When the vertical airflow direction is set to AUTO, it stops at a lower position to avoid cold air contact. However, you can adjust the flap direction manually.

Auto restart control
When power is resumed after a power failure, the operation will restart automatically with the last operation mode and airflow direction.

• This control is not applicable when TIMER is set.

Operating conditions

Use this air conditioner in the temperature range indicated in the table.

Temperature °C (°F)

| Indoor| Single split outdoor unit 1| Multi-split outdoor unit 2
---|---|---|---
DBT| WBT| DBT| WBT| DBT| WBT

COOL

| Max.| 32 (89.6)| 23 (73.4)| 43 (109.4)| 26 (78.8)| 46 (114.8)| 26 (78.8)
Min.| 16 (60.8)| 11 (51.8)| -10 (14.0)| –| -10 (14.0)| –

HEAT

| Max.| 30 (86.0)| –| 24 (75.2)| 18 (64.4)| 24 (75.2)| 18 (64.4)
Min.| 16 (60.8)| –| -15 (5.0)| -16 (3.2)| -15 (5.0)| -16 (3.2)

• DBT: Dry bulb temperature,
• WBT: Wet bulb temperature

1. CU-TZ20ZKE, CU-TZ25ZKE, CU-TZ35ZKE, CU-TZ42ZKE, CU-TZ50ZKE, CU-RZ25ZKE, CU-RZ35ZKE, CU-RZ50ZKE
2. CU-2Z35TBE, CU-2Z41TBE, CU-2Z50TBE, CU-3Z52TBE, CU-3Z68TBE, CU-4Z68TBE, CU-4Z80TBE, CU-5Z90TBE, CU-2TZ41TBE, CU-2TZ50TBE, CU-3TZ52TBE

Cleaning the Air Conditioner

Cleaning has to be carried out at regular intervals to ensure the unit is at optimal performance. A dirty unit may cause malfunction and you may retrieve “H 99” error code. Consult an authorised dealer.

• Before cleaning, switch off the power supply and unplug the unit.
• Do not touch the aluminum fin as the sharp parts may cause injury.
• Do not use benzine, thinner, or scouring powder.
• Use soap ( pH 7) or neutral household detergent only.
• Do not use water hotter than 40 °C / 104 °F.

Indoor unit

• Do handle the unit surface with care to avoid scratches by sharp or rough items (e.g. fingernails, tools, rings, etc). Wipe the unit gently with a soft damp cloth.
• The coils and fans should be cleaned periodically by an authorized dealer.

Front panel
Wash gently and dry.

How to remove the front panel

Close it securely

Indoor unit

Outdoor unit

• Clean the debris that surrounds the unit.
• Clear any blockage from the drain pipe.

Air filters

Once every 2 weeks

• Wash/rinse the filters gently with water to avoid damaging the surface.
• Dry the filters thoroughly under a shade, away from fire or direct sunlight.
• Replace any damaged filters.

Remove air filter

Attach air filter

Troubleshooting

The following symptoms do not indicate malfunction.

preliminary step to prepare for the TIMER operation after it has been set.

When the Timer is set ON, the unit may start earlier (up to 35 minutes) before the actual set time to achieve the desired temperature on time.

The POWER indicator blinks during HEAT mode with no warm air supply (and the flap is closed).| • The unit is in defrost mode (and AIR SWING has been set to AUTO).
The POWER indicator blinks, then stops blinking during COOL/DRY mode.| • The system has been locked to operate in HEAT mode only.
The TIMER indicator is always ON.| • When the Timer has been set, the Timer setting repeats daily.
Operation is delayed a few minutes after restarting.| • The delay is a protection to the unit’s compressor.
Cooling/heating capacity is reduced during the lowest fan speed setting.| • The lowest fan speed is to have a low noise operation, so cooling/heating capacity may be reduced depending on the condition. Increase the fan speed to increase the capacity.
In COOL mode, when the room temperature reaches near the set temperature, the compressor stops, then the indoor unit fan speed is reduced.| • To prevent the room humidity from rising. The indoor fan will resume running according to the set fan speed when the room temperature increases.
The indoor fan stops occasionally during the heating operation.| • To avoid unintended cooling effects.
The indoor fan stops occasionally during the automatic fan speed setting.| • This is to help remove the surrounding odor.
Airflow continues even after the operation has stopped.| • To extract the remaining heat from the indoor unit (maximum 30 seconds).
The room has a peculiar odor.| • This may be due to a damp smell emitted by the wall, carpet, furniture, or clothing.
Cracking sound during operation.| • temperature changes caused the unit to expand and contract.
Water flowing sound during operation.| • Refrigerant flow inside the unit.
Mist emerges from the indoor unit.| • During cooling operation, the discharged cold air may condense to water vapor.
The outdoor unit emits water or steam.| • During cooling operation, condensation occurs on

cold pipes and the condensed water may drip from the outdoor unit.

• During heating operation, frost formed on the outdoor unit during the deice cycle melts and is discharged as water or steam.

Discoloration of some plastic parts.| • Discoloration is subjected to the types of materials used in plastic parts. It is accelerated when exposed to heat, sunlight, UV light, or environmental factors.
Soft buzzing sound from the indoor unit during nanoe™X operation.| • It is normal when the nanoe™X generator is working. If you are concerned about the sound, cancel the nanoe™X operation.
The Wireless LAN indicator is ON when the unit is OFF.| • The unit’s wireless LAN connection with the router has been activated.

Check the following before calling for servicing.

correctly.

• Close all doors and windows.

• Clean or replace the filters.

• Clear any obstruction at the air inlet and air outlet vents.

Noisy during operation.| • Check if the unit has been installed at an incline.

• Close the front panel properly.

Remote control does not work.

(Display is dim or transmission signal is weak.)

| • Insert the batteries correctly.

• Replace weak batteries.

The unit does not work.| • Check if the circuit breaker is tripped.

• Check if timers have been set.

The unit does not receive the signal from the remote control.| • Make sure the receiver is not obstructed.

• Certain fluorescent lights may interfere with the signal transmitter. Consult an authorized dealer.

The nanoe™X indicator at the indoor unit is not ON when nanoe™X is activated.| • Use the remote control to retrieve the error code and consult an authorized dealer.

When

The remote control is missing or a malfunction has occurred

1. Raise the front panel.
2. Press AUTO OFF/ON once to use AUTO mode.
3. To operate forced COOL mode, press AUTO OFF/ON hold until you hear 1 beep, then release. (This operation shall be performed by service personnel)
4. To operate forced HEAT mode, repeat step 3. Press AUTO OFF/ON until you hear 2 beeps, then release. (This operation shall be performed by service personnel)
5. Press AUTO OFF/ON again to turn off the unit.

The indicators are too bright
To dim or restore the indicators’ brightness on the unit, press on the remote for 5 seconds.

Conducting a seasonal inspection after an extended period of non-use

• Check the batteries.
• Check that there is no obstruction around the air inlets and outlet vents.
• Use AUTO OFF/ON on the unit to select COOL or HEAT mode. For details, refer to “The remote control is missing or a malfunction has occurred” above. After 15 minutes of operation, it is normal to have the following temperature difference between the air inlet and outlet vents:
  • COOL: ≥ 8 °C / 14.4 °F
  • HEAT: ≥ 14 °C / 25.2 °F

The units will be not used for an extended period

• Activate HEAT mode for 2~3 hours to remove any moisture left in the internal parts thoroughly. This is to prevent mold growth.
• Turn off the power supply and unplug the unit.
• Remove the batteries from the remote control.

NON SERVICEABLE CRITERIA
TURN OFF THE POWER SUPPLY AND UNPLUG THE UNIT. Then consult an authorized dealer in the following conditions:

• Abnormal noise during operation.
• Water/foreign particles have entered the remote control.
• Water is leaking from the indoor unit.
• The circuit breaker switches off frequently.
• The power cord becomes unnaturally warm.
• The switches or buttons are not functioning properly.

How to retrieve error codes
If the unit stops and the TIMER indicator blinks, use the remote control to retrieve the error code.

For certain errors, you may restart the unit for limited operation if there are 4 beeps when the operation starts.

Some error codes may not be applicable to your model. Consult an authorized dealer for clarification.

Important Information

Information for Users on Collection and Disposal of Old Equipment and Used Batteries

• These symbols on the products, packaging, and/or accompanying documents mean that used electrical and electronic products and batteries must not be mixed with general household waste.

• For proper treatment, recovery, and recycling of old products and used batteries, please take them to applicable collection points under your national legislation.

• By disposing of them correctly, you will help to save valuable resources and prevent any potential negative effects on human health and the environment. For more information about collection and recycling, please contact your local authority.
  Penalties may be applicable for incorrect disposal of this waste, per national legislation.

• For Business users in the European Union and some other European countries
  If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information.
  [Information on Disposal in other Countries outside the European Union] These symbols are only valid in the European Union. If you wish to discard these items, please contact your local authority or dealer and ask for the correct method of disposal.

• Note for the battery symbol (bottom two symbol examples):
  This symbol might be used in combination with a chemical symbol. In this case, it complies with the requirement set by the Directive for the chemical involved.

  • 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 a service personnel should be handling this equipment concerning the Installation Instructions.
  • This symbol shows that the Operation Instructions should be read carefully.
  • This symbol shows that there is information included in the Operation Instructions and/or Installation Instructions.
  • This air conditioner incorporates a device that generates a biocidal product. Free radicals generated by a device incorporated in the air conditioner can inhibit pollutants, such as certain types of bacteria, viruses, and mold.
  • Active substances: Free radicals generated in situ from ambient air or water.
  • Usage: This device function can be operated ON / OFF by the “nanoe X” icon button. Do refer to “How to Use” for more detail.

Manufactured by:

• Panasonic Corporation
  1006, Oaza Kadoma, Kadoma City, Osaka 571-8501, Japan

• Importer:
  Panasonic Marketing Europe GmbH Authorized Representative in EU: Panasonic Testing Centre Winsbergring 15, 22525 Hamburg, Germany.

• Contact in the UK:
  Panasonic UK, a branch of Panasonic Marketing Europe GmbH Maxis 2, Western Road, Bracknell, Berkshire, RG12 1RT.

• Website: http://www.panasonic.com

© Panasonic Corporation 2022.

References

• Redirector | Swedish Export Media
• Panasonic Australia | Air Con | Cameras | Home Appliances
• Panasonic Testing Centre
• ManualSearch
• ear-system.de/ear-verzeichnis/sammel-und-ruecknahmestellen

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