Panasonic CS-Z20VKEW User manual

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Operating Instructions
Air Conditioner
ACXF55-22540
Model No.
Indoor Unit Outdoor Unit
CS-Z20VKEW
CS-Z25VKEW
CS-Z35VKEW
CS-Z42VKEW
CS-Z50VKEW
CS-Z71VKEW
CS-XZ20VKEW
CS-XZ25VKEW
CS-XZ35VKEW
CS-XZ50VKEW
CS-MZ16VKE
Single Split (R32)
CU-Z20VKE
CU-Z25VKE
CU-Z35VKE
CU-Z42VKE
CU-Z50VKE
CU-Z71VKE
Multi Split (R410A)
CU-3E18PBE
CU-4E23PBE
CU-4E27PBE
CU-5E34PBE
CU-2E12SBE
CU-2E15SBE
CU-2E18SBE
CU-3E23SBE
Multi Split (R32)
CU-2Z35TBE
CU-2Z41TBE
CU-2Z50TBE
CU-3Z52TBE
CU-3Z68TBE
CU-4Z68TBE
CU-4Z80TBE
CU-5Z90TBE
Operating Instructions
Air Conditioner
2-41
Before operating the unit, please read these operating
instructions thoroughly and keep them for future reference.
The included Installation Instructions should be kept and read
by the installer before installation.
Remote control is packaged in the indoor unit and removed
by the installer before installation.
Comment utiliser l’appareil
Climatiseur
42-77
Avant d’utiliser l’appareil, veuillez lire ce mode d’emploi dans
son intégralité et conservez-le pour toute référence ultérieure.
Le manuel d’installation inclus doit être conservé et lu par
l’installateur avant l’installation.
La télécommande est emballée dans l’unité intérieure et
retirée par l’installateur avant l’installation.
Instrucciones de funcionamiento
Climatizador de aire
78-113
Antes de utilizar la unidad, sírvase leer atentamente estas
instrucciones de funcionamiento y conservarlas para futuras
consultas.
El instalador debe guardar y leer las Instrucciones de
instalación incluidas antes de la instalación.
El mando a distancia viene embalado en la unidad interior y
debe ser retirado por el instalador antes de la instalación.

2
A new built-in Network Adaptor that allows you to control
your heatpump from everywhere.
Quick Guide
Inserting the batteries
1
2
3
1Pull out the back cover
of remote control.
2
Insert AAA or R03
batteries.
3Close the cover.
AClock setting
1Press
CLOCK
and set
the time .
•Press
CLOCK
and hold for
approximately 5
seconds to show
time in 12-hour
(am/pm) or 24 hour
indication.
2Confirm
SET
.
Use remote
control within 8 m
from the remote
control receiver of
the indoor unit.
Flexibility to connect
Single Split System or
Multi Split System Air
Conditioner to suit your
needs.
For complete product features,
please refer to catalogue.
B
TIMER
OFF
TIMER
ON
B
A
B

3
English
Table of contents
Safety precautions ................... 4-16
System Overview .................... 17
How to use ......................... 18-27
Network Adaptor Q&A ........ 28-29
To learn more .......................... 30
Cleaning instructions ............... 31
Troubleshooting ................. 32-34
Information ......................... 35-36
Copyright ............................ 37-41
BBasic operation
1
Press
to start/stop the
operation.
POWER
•Please note that
the indication
is on display to
start the unit.
3Select the desired
temperature.
Up
Down
Selection range:
16.0 °C ~ 30.0 °C /
60 °F ~ 86 °F.
•Press and hold for
approximately 10 seconds
to switch the temperature
indication in °C or °F.
Thank you for purchasing Panasonic
Air Conditioner.
The illustrations in this manual are for
explanation purposes only and may differ
from the actual unit. They are subject
to change without notice for future
improvement.
Accessories
• Remote control
• AAA or R03 batteries × 2
• Remote control holder
• Screws for remote control
holder × 2
2Press
MODE
to select
the desired mode.
DRY
AUTO HEAT
COOL

4
Safety precautions
To prevent personal injury, injury to others
or property damage, please comply with the
following:
Incorrect operation due to failure to follow
instructions below may cause harm or damage,
the seriousness of which is classified as below:
This appliances 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:
This symbol denotes an
action that is PROHIBITED.
These symbols denote
actions COMPULSORY.
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 made by
children without supervision.
Please consult authorised dealer or
specialist to clean the internal parts,
repair, install, remove and reinstall the
unit. Improper installation and handling
will cause leakage, electric shock or
fire.
Confirm with authorised dealer or
specialist on usage of any specified
refrigerant type. Using refrigerant type
other than the specified may cause
product damage, burst and injury etc.
Do not use means to accelerate
the defrosting process or to clean,
other than those recommended by
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.
Indoor unit
Outdoor unit
Power supply
Remote control
Air inlet
Air inlet
Air inlet
Air inlet
Air outlet
Air outlet
Air outlet
Air outlet

5
EnglishSafety precautions
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.
Network Adaptor (activated)
Do not use the indoor unit near to
any medical equipment or automatic
control equipment (automatic door,
wire alarms, etc.).
(Radio wave from indoor unit may
interfere with the equipment and may
cause incident due to malfunction)
Keep at least 15 cm away from the
indoor unit if you have a cardiac
pacemaker.
(Radio wave from indoor unit may
interfere with the operation of
pacemaker)
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 over bend 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 in order to avoid a hazard.
It is strongly recommended to be
installed with 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.
• Burning smell is observed.
• Abnormal noise or vibration of the unit
is observed.
• Water leaks from the indoor unit.
• 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.

6
Safety precautions
CAUTION
Indoor unit and outdoor unit
Do not wash the indoor unit with water,
benzine, thinner or scouring powder to
avoid damage or corrosion at the unit.
Do not use for 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 pet directly to
airflow to avoid injury, etc.
Do not touch the sharp
aluminium 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
purpose 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 window or door for
long time during operation, it may
lead to inefficient power usage and
uncomfortable temperature changes.
Prevent water leakage by ensuring
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 down.
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.
Network Adaptor (activated)
Check the following requirements in
advanced (At home):
• Insert the power supply thoroughly.
Ensure no dust builds up on the
power supply.
(This can cause fire due to ignition in
the power supply’s of poor contact)
• Check the status of timer activation
set by other persons.
(Unexpected run-stop operation may
cause harm to human body, pets, and
plants)
• There should be no abnormality in the
air conditioner. Even though there is a
change of wind direction, no adverse
effect on the persons nor the rooms.
(Ensure no objects that easy to fly or
drop, etc. Object fall due to wind may
cause fire, injury, etc.)

7
English
Check the following requirements
before and during operation from
outside:
• Do inform the inside person of the
air conditioner operating setting’s
condition.
(This may cause harm to human body
due to sudden changes of outside
temperature and room temperature)
- Temperature adjustment can be
operated by remote control.
- If inside the room with an infant,
physically handicapped person,
elderly person, etc. who are not
able to control the temperature by
themselves, please do not use this
application.
• Please check the setting and
operating conditions.
(Sudden change of outside-room
temperature may cause harm to
human body, pets, and plants)
Power supply
Do not disconnect the plug by pulling
the cord to prevent electric shock.
WARNING
This appliance is filled with R32
(mild 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 odour, 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.
Safety precautions

8
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 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 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.)
• Operation, maintenance, repairing
and refrigerant recovery should be
carried out by trained and certified
personnel in the use of flammable
refrigerants and as recommended
by the manufacturer. Any personnel
conducting an operation, servicing
or maintenance on a system or
associated parts of the equipment
should be trained and certified.
• Any part of refrigerating circuit
(evaporators, air coolers, AHU,
condensers or liquid receivers) or
piping should not be located in the
proximity of heat sources, open
flames, operating gas appliance or an
operating electric heater.
• The user/owner or their authorised
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 requirement of trained
and certified personnel are indicated
as below:
a) Knowledge of legislation,
regulations and standards relating
to flammable refrigerants; and,
b) Detailed knowledge of and skills in
handling flammable refrigerants,
personal protective equipment,
refrigerant leakage prevention,
handling of cylinders, charging,
leak detection, recovery and
disposal; and,
Safety precautions

9
English
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.
e) Air-conditioner piping in the
occupied space shall be installed
in such a way to protect against
accidental damage in operation
and service.
f) Precautions shall be taken to avoid
excessive vibration or pulsation to
refrigerating piping.
g) 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).
h) Expansion and contraction of
long runs piping in refrigerating
systems shall be designed and
installed securely (mounted
and guarded) to minimize the
likelihood hydraulic shock
damaging the system.
i) Protect the refrigerating system
from accidental rupture due to
moving furniture or reconstruction
activities.
j) 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.
1. Installation (Space)
• Product with flammable refrigerants,
shall be installed according to
the minimum room area, Amin
(m²) mentioned in Table A of the
Installation Instructions.
• In case of field charge, the effect
on refrigerant charge caused by
the different pipe length has to be
quantified, measured and labelled.
• Must ensure the installation of pipe-
work shall be kept to a minimum.
Avoid use dented pipe and do not
allow acute bending.
• Must ensure that pipe-work shall be
protected from physical damage.
• Must comply with national gas
regulations, state municipal rules and
legislation. Notify relevant authorities
in accordance with all applicable
regulations.
• Must ensure mechanical connections
be accessible for maintenance
purposes.
• In cases that require mechanical
ventilation, ventilation openings shall
be kept clear of obstruction.
• When disposal of the product, do
follow to the precautions in #12 and
comply with national regulations.
Always contact to local municipal
offices for proper handling.
Safety precautions

10
Safety precautions
2. Servicing
2-1. 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 in accordance with the room size
within which the refrigerant containing
parts are installed.
• Ensure refrigerant charge 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 in accordance with an industry
recognised assessment specification.
• Servicing shall only be performed
as recommended by the equipment
manufacturer. Maintenance and
repair requiring the assistance of
other skilled personnel shall be
carried out under the supervision of
the person competent in the use of
flammable refrigerants.
• Servicing shall be performed only as
recommended by the manufacturer.
2-2. Work
• Prior to beginning work on systems
containing flammable refrigerants,
safety checks are necessary to
ensure that the risk of ignition
is minimised. For repair to the
refrigerating system, the precautions
in #2-2 to #2-8 must be followed
before conducting work on the
system.
• Work shall be undertaken under
a controlled procedure so as to
minimize the risk of a flammable gas
or vapour 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.
Always ensure away from source, at
least 2 meter of safety distance, or
zoning of free space area of at least 2
meter in radius.
• Wear appropriate protective
equipment, including respiratory
protection, as conditions warrant.
• Keep all sources of ignition and hot
metal surfaces away.

11
English
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 down wind 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 refrigerating equipment or
any associated parts, appropriate
fire extinguishing equipment shall be
available at hand.
• Have a dry powder or CO2fire
extinguisher adjacent to the charging
area.
2-5. No ignition sources
• No person carrying out work in
relation to a refrigerating 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.
Safety precautions

12
Safety precautions
2-7. 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 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 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.

13
English
3. Repairs to sealed components
• During repairs to sealed components,
all electrical supplies shall be
disconnected from the equipment
being worked upon prior to any
removal of sealed covers, etc.
• If it is absolutely necessary to have
an electrical supply to equipment
during servicing, then a permanently
operating form of leak detection shall
be located at the most critical point
to warn of a potentially hazardous
situation.
• Particular attention shall be paid
to the following to ensure that by
working on electrical components, the
casing is not altered in such a way
that the level of protection is affected.
This shall include damage to cables,
excessive number of connections,
terminals not made to original
specification, damage to seals,
incorrect fitting of glands, etc.
• Ensure that apparatus is mounted
securely.
• Ensure that seals or sealing materials
have not degraded such that they
no longer serve the purpose of
preventing the ingress of flammable
atmospheres.
• Replacement parts shall be in
accordance with the manufacturer’s
specifications.
NOTE: The use of silicon sealant may
inhibit the effectiveness of some types
of leak detection equipment.
Intrinsically safe components do not
have to be isolated prior to working on
them.
4. Repair to intrinsically safe
components
• Do not apply any permanent inductive
or capacitance loads to the circuit
without ensuring that this will not
exceed the permissible voltage and
current permitted for the equipment
in use.
• Intrinsically safe components are
the only types that can be worked
on while live in the presence of a
flammable atmosphere.
• The test apparatus shall be at the
correct rating.
• Replace components only with
parts specified by the manufacturer.
Unspecified parts by manufacturer
may result ignition of refrigerant in the
atmosphere from a leak.
5. Cabling
• Check that cabling will not be
subject to wear, corrosion, excessive
pressure, vibration, sharp edges or
any other adverse environmental
effects.
• The check shall also take into
account the effects of aging or
continual vibration from sources such
as compressors or fans.
6. Detection of flammable
refrigerants
• Under no circumstances shall
potential sources of ignition be used
in the searching or detection of
refrigerant leaks.
• A halide torch (or any other detector
using a naked flame) shall not be
used.
Safety precautions

14
Safety precautions
7. The following leak detection
methods are deemed
acceptable for all refrigerant
systems
• No leaks shall be detected when
using detection equipment with a
sensitivity of 5 grams per year of
refrigerant or better under a pressure
of at least 0.25 times the maximum
allowable pressure (>1.04 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
which requires brazing, all of the
refrigerant shall be recovered from
the system, or isolated (by means
of shut off valves) in a part of the
system remote from the leak. The
precautions in #8 must be followed to
remove the refrigerant.
8. Removal and evacuation
• When breaking into the refrigerant
circuit to make repairs – or for
any other purpose – conventional
procedures shall be used. However,
it is important that best practice
is followed since flammability is
a consideration. The following
procedure shall be adhered to:
remove refrigerant -> purge the circuit
with inert gas -> evacuate -> purge
with inert gas -> open the circuit by
cutting or brazing.
• The refrigerant charge shall be
recovered into the correct recovery
cylinders.
• The system shall be purged with OFN
to render the appliance safe.
• This process may need to be
repeated several times.
• Compressed air or oxygen shall not
be used for this task.
• Purging shall be achieved by
breaking the vacuum in the system
with OFN and continuing to fill until
the working pressure is achieved,
then venting to atmosphere, and
finally pulling down to a vacuum.
• This process shall be repeated until
no refrigerant is within the system.
• When the final OFN charge is used,
the system shall be vented down to
atmospheric pressure to enable work
to take place.
• This operation is absolutely vital if
brazing operations on the pipe work
are to take place.
• Ensure that the outlet for the
vacuum pump is not close to any
potential ignition sources and there is
ventilation available.
OFN = oxygen free nitrogen,
type of inert gas.

15
English
9. 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 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 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 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.
10. Decommissioning
• Before carrying out this procedure,
it is essential that the technician
is completely familiar with the
equipment and all its details.
• It is recommended good practice that
all refrigerants are recovered safely.
• Prior to the task being carried
out, an oil and refrigerant sample
shall be taken in case analysis is
required prior to re-use of recovered
refrigerant.
• It is essential that electrical power
is available before the task is
commenced.
a) Become familiar with the
equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure
ensure that:
• mechanical handling equipment is
available, if required, for handling
refrigerant cylinders;
• all personal protective equipment
is available and being used
correctly;
• the recovery process is supervised
at all times by a competent person;
• recovery equipment and cylinders
conform to the appropriate
standards.
d) Pump down refrigerant system, if
possible.
e) If a vacuum is not possible, make
a manifold so that refrigerant can
be removed from various parts of
the system.
f) Make sure that cylinder is situated
on the scales before recovery
takes place.
g) Start the recovery machine and
operate in accordance with
instructions.
h) Do not over fill cylinders. (No more
than 80 % volume liquid charge).
Safety precautions

16
Safety precautions
i) Do not exceed the maximum
working pressure of the cylinder,
even temporarily.
j) When the cylinders have been
filled correctly and the process
completed, make sure that the
cylinders and the equipment are
removed from site promptly and all
isolation valves on the equipment
are closed off.
k) Recovered refrigerant shall not be
charged into another refrigerating
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.
11. Labelling
• Equipment shall be labelled stating
that it has been de-commissioned
and emptied of refrigerant.
• The label shall be dated and signed.
• Ensure that there are labels on the
equipment stating the equipment
contains flammable refrigerant.
12. 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.
• 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.

17
EnglishSafety precautions / System Overview
System Overview
•Requires the APP to work with a smartphone with Android 4.4 and above, or iOS 9 and
above.
However, there is no guarantee that the APP will work well with all Android OS version.
•The Network Adaptor is designed specifically as a terminal for “Panasonic Comfort Cloud”
app.
•The Wireless LAN network coverage must reach the air conditioner installation location.
Network Adaptor Wireless LAN Module (built-in)
Model DNSK-P11
Input Voltage DC 5V (From Air Conditioner Indoor Unit)
Current Consumption Tx/Rx max. 290/100 mA
Wireless LAN standard IEEE 802.11 b/g/n
Frequency range 2.4 GHz band
Encryption WPA2-PSK (TKIP/AES)
Specification
Maximum radio-frequency power transmitted in the frequency bands
Type of wireless Frequency band Max. EIRP (dBm)
WLAN 2412 - 2472 MHz 20 dBm
•Do NOT disassemble or alter this Network Adaptor in any way.
•Do NOT remove this Network Adaptor from the appliance product during operations.
•Data transmitted and received over radio waves may be intercepted and monitored.
Precaution
Panasonic
Download from app store
Network
Adaptor Router Internet Smartphone
Items you need to prepare
(purchase and subscribe separately)
Panasonic Comfort Cloud
app (free)
Indoor Unit

18
How to use
AIR SWING
To adjust airflow direction
POWERFUL:
To reach temperature quickly
•This operation stops automatically after 20 minutes.
QUIET:
To enjoy quiet operation
•This operation reduces airflow noise.
Upper direction
Lateral direction
•For AUTO, the indoor fan speed is automatically
adjusted according to the operation mode.
•To have low noise priority operation, select the
lowest fan speed .
To adjust fan speed
AUTO
FAN
•Do not adjust the flap by hand.
To switch between powerful/quiet
Indicator
POWER
TIMER
nanoe X
To enjoy freshness and cleaner environment
•This operation provides clean air, moisturises your
skin and hair, deodorizes odours in the room.
•This operation can be activated when the unit is turn
on or off by pressing the nanoe™X button. During
nanoe™X individual operation, the fan speed will be
based on remote control setting.
•If nanoe™X is activated before the unit is turn off,
nanoe™X operation will resume once the unit is turn
on, this includes to ON Timer.
TIMER
OFF
TIMER
ON
Press to restore
the remote
control to default
setting.
Not used
in normal
operations.
Press to ON/ OFF
Wireless LAN
features.
• This operation reduces air dryness during COOL mode
only.
MILD DRY
To improve humidity and moisture level
(Not applicable for Multi split system)

19
EnglishHow to use
To maximise comfort while sleeping
• This operation can be set together with timer.
Sleep operation has the priority over OFF
timer.
• This operation can be cancelled by pressing
the respective button until the sleep timer
reaches 0.0h.
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.
SLEEP
(Cancel)
This operation is incorporated with the activation
timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours).
Operating conditions
Use this air conditioner in the temperature range indicated in the table.
Temperature °C (°F) Indoor Single split outdoor unit *1Multi 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-Z20VKE, CU-Z25VKE, CU-Z35VKE, CU-Z42VKE, CU-Z50VKE, CU-Z71VKE
*2
CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, CU-2E12SBE, CU-2E15SBE, CU-2E18SBE, CU-3E23SBE,
CU-2Z35TBE, CU-2Z41TBE, CU-2Z50TBE, CU-3Z52TBE, CU-3Z68TBE, CU-4Z68TBE, CU-4Z80TBE, CU-5Z90TBE
See "To learn more..." for details.
Note
, ,
SLEEP
• Can be activated in all modes and can be
cancelled by pressing the respective button again.
• Cannot be selected at the same time.
• Cannot be activated during MILD DRY.
To set the timer
•To cancel ON or OFF timer, press
TIMER
ON
or
TIMER
OFF
to select respective or then
press
CANCEL
.
•If timer is cancelled manually or due to
power failure, you can restore the timer
again by pressing
TIMER
ON
or
TIMER
OFF
to select
respective or then press
SET
.
•The nearest timer setting will be displayed
and will activate in sequence.
•Timer operation is based on the clock set
in the remote control and repeats daily
once set. For clock setting, please refer to
Quick Guide.
2 sets of ON and OFF timers are available to turn ON or OFF the unit at different preset time.
TIMER
OFF
TIMER
ON
3
12
Select ON or OFF
timer Example: OFF at 22:00
•Each time pressed:
Cancel
TIMER
OFF
Set the time
Confirm
2
SET
1
2
3

20
App Installation
For Android user (Android 4.4 and above)
•Open
GET IT ON
Google Play
.
•Search for “Panasonic Comfort Cloud” app.
•Download and install.
For iOS user (iOS 9 and above)
•Open
Download on the
App Store
.
•Search for “Panasonic Comfort Cloud” app.
•Download and install.
Note
•The app user interface image may change for version upgrade without notification.
•There is no charge for using this application. However, other charges may be incurred for
connection and operation.
•Press to communicate with the home wireless LAN access point.
•Wireless LAN LED blinks to indicate the connection status to home access
point.
App InstallationTo connect network
Starting “Panasonic Comfort Cloud”
•For new user, select Create new Panasonic
ID to register.
•For registered user, login using your
Panasonic ID and password.
Use “Panasonic Comfort Cloud” app as an option to control the air conditioner.
Please enter your Panasonic ID and password.
Panasonic ID
Password
Password
Remember me
Forgot ID/Password
Create new Panasonic ID
View an example
Login
Login
Panasonic ID
Create New Panasonic ID
How to use
Fast blink The unit is establishing the connection.
Slow blink The unit is not securing the connection.
No blink (stays on) The unit has established the connection.
•It can establish the connection to the unit even if the unit is turned OFF.