Panasonic S-M20PY3E User manual

Model No.

Indoor Units

Type Rated Capacity 20 25 36 50 60

Indoor Units Type

Y3 4-Way Cassette 60 × 60 S-M20PY3E S-25PY3E S-36PY3E S-50PY3E S-60PY3E

(CZ-KPY4)*

* Panel (optional parts)

ENGLISH

Read through the Installation Instructions before you proceed with the installation.

In particular, you will need to read under the “IMPORTANT!” section at the top of the page.

WEB-ACXF60-40970-EN

Air Conditioner

This air conditioner uses the refrigerant R32.

INSTALLATION INSTRUCTIONS

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IMPORTANT!

Please Read Before Starting

This air conditioner must be installed by the sales dealer

or installer.

This information is provided for use only by authorized

persons.

For safe installation and trouble-free operation, you must:

•This Installation Instructions is for the indoor unit and

read the Installation Instructions of the outdoor unit as

well.

•Carefully read this instruction booklet before beginning.

•This air conditioner is required to have the remote

controller which is adaptable to nanoe™ X function.

•Follow each installation or repair step exactly as shown.

•This air conditioner shall be installed in accordance with

National Wiring Regulations.

•That compliance with national gas regulations shall be

observed.

•The product meets the technical requirements of

EN/IEC 61000-3-3.

•Pay close attention to all warning and caution notices

given in this manual.

WARNING

This symbol refers to a hazard or

unsafe practice which can result in

severe personal injury or death.

CAUTION

This symbol refers to a hazard or

unsafe practice which can result

in personal injury or product or

property damage.

If Necessary, Get Help

These instructions are all you need for most installation

sites and maintenance conditions. If you require help for a

special problem, contact our sales/service outlet or your

certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for

improper installation or maintenance service, including

failure to follow the instructions in this document.

WARNING

•Do not use means to accelerate the defrosting process or to clean, other than

those recommended by the manufacturer.

•The appliance shall be stored in a room without continuously operating ignition

sources (for example: open flames, an operating gas appliance or an operating

electric heater).

•Do not pierce or burn.

•Be aware that refrigerants may not contain an odour.

•

The following checks shall be applied to installations using flammable refrigerants.

Appliance shall be installed, operated and stored in a room with a floor area larger

than [Amin] m2.

As for [Amin], see Section “12. CHECK OF DENSITY LIMIT”.

SPECIAL PRECAUTIONS

WARNING When Wiring

WARNING

Risk of Electric Shock

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR

DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD

ATTEMPT TO WIRE THIS SYSTEM.

•Do not supply power to the unit until all wiring and tubing are completed or reconnected

and checked.

•Highly dangerous electrical voltages are used in this system. Carefully refer to

the wiring diagram and these instructions when wiring. Improper connections and

inadequate grounding can cause accidental injury or death.

•Connect all wiring tightly. Loose wiring may cause overheating at connection points and

a possible fire hazard.

•Provide a power outlet to be used exclusively for each unit.

•Provide a power outlet exclusively for each unit, and full disconnection means having

a contact separation by 3 mm in all poles must be incorporated in the fixed wiring in

accordance with the wiring rules.

•To prevent possible hazards from insulation failure, the unit must be grounded.

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•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.

•This equipment is strongly recommended to be installed with Earth Leakage Circuit

Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical

shock and fire in case of equipment breakdown or insulation breakdown.

When Transporting

•It may need two or more people to carry out the installation work.

•Be careful when picking up and moving the indoor and outdoor units. Get a partner to

help, and bend your knees when lifting to reduce strain on your back. Sharp edges or

thin aluminum fins on the air conditioner can cut your fingers.

When Storing…

WARNING

•The appliance shall be stored in a well-ventilated area where the room size

corresponds to the room area as specified for operation.

•The appliance shall be stored in a room without continuously operating open

flames (for example: an operating gas appliance) and ignition sources (for

example: an operating electric heater).

•The appliance shall be stored so as to prevent mechanical damage from occurring.

When Installing…

•Select an installation location which is rigid and strong enough to support or hold the

unit, and select a location for easy maintenance.

•In cases that require mechanical ventilation, ventilation openings shall be kept clear of

obstruction.

•An unventilated area where the appliance using flammable refrigerants is installed shall

be so constructed that should any refrigerant leak, it will not stagnate so as to create a

fire or explosion hazard.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause

dripping and water damage to walls and floors.

CAUTION

Keep the fire alarm and the air outlet at least 1.5 m away from the unit.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the

outdoor unit. This prevents water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable

air baffle.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide

snow vents.

…At least 2.2 m

Installation height for indoor unit shall be at least 2.2 m.

…In laundry rooms

Do not install in laundry rooms. Indoor unit is not drip proof.

When Connecting Refrigerant Tubing

Pay particular attention to refrigerant leakages.

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WARNING

•

When performing piping work, do not mix air except for specified refrigerant in

refrigeration cycle. It causes capacity down, and risk of explosion and injury due to

high tension inside the refrigerant cycle.

•If the refrigerant comes in contact with a flame, it produces toxic gases and fire.

•Do not add or replace refrigerant other than specified type. It may cause product

damage, burst and injury, etc.

•Ventilate the room immediately in the event of a refrigerant gas leakage during

installation. Be careful not to allow contact of the refrigerant gas with a flame as this will

cause the generation of toxic gases and fire.

•Keep all tubing runs as short as possible.

•Use the flare method for connecting tubing.

•Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before

connecting them, then tighten the nut with a torque wrench for a leak-free connection.

•Check carefully for leaks before starting the test run.

•Do not leak refrigerant while piping work for an installation or re-installation, and while

repairing refrigeration parts.

Handle liquid refrigerant carefully as it may cause frostbite.

•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.

•Electronic leak detectors may be used to detect refrigerant leaks 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 lower flammable limit

(LFL) of the refrigerant and shall be calibrated to the refrigerant employed and the

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

•Leak detection fluids are suitable for use with most refrigerants 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.

When Servicing

•Contact the sales dealer or service dealer for a repair.

•Be sure to turn off the power before servicing.

•Turn the power OFF at the main power box (mains), wait at least 5 minutes until it

is discharged, then open the unit to check or repair electrical parts and wiring.

•Keep your fingers and clothing away from any moving parts.

•Clean up the site after you finish, remembering to check that no metal scraps or bits of

wiring have been left inside the unit.

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WARNING

•This product must not be modified or disassembled under any circumstances.

Modified or disassembled unit may cause fire, electric shock or injury.

•Do not clean inside the indoor and outdoor units by users. Engage authorized

dealer or specialist for cleaning.

•In case of malfunction of this appliance, do not repair by yourself. Contact the

sales dealer or service dealer for a repair and disposal.

CAUTION

•Ventilate any enclosed areas when installing or testing the refrigeration system.

Leaked refrigerant gas, on contact with fire or heat, can produce dangerously toxic

gases.

•Confirm after installation that no refrigerant gas is leaking. If the gas comes in

contact with a burning stove, gas water heater, electric room heater or other heat

source, it can cause the generation of toxic gases and fire.

Others

When disposal of the product, do follow the precautions referring to Section “Recovery”

in the installation instructions supplied with the outdoor unit and comply with national

regulations.

WARNING

•Do not sit or step on the unit. You may fall down accidentally.

CAUTION

•Do not touch the air inlet or the sharp aluminum fins of the outdoor unit.

You may get injured.

•Do not stick any object into the FAN CASE.

You may be injured and the unit may be damaged.

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SERVICING

CAUTION

•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.

•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, (2) to (6) shall be completed prior to conducting work on

the system.

(1) Work shall be undertaken under a controlled procedure so as to minimise the risk

of a flammable gas or vapour being present while the work is being performed.

(2) All maintenance staff and others working in the local area shall be instructed on

the nature of work being carried out. Work in confined spaces shall be avoided.

The area around the workspace shall be sectioned off. Ensure that the conditions

within the area have been made safe by control of flammable material.

(3) The area shall be checked with an appropriate refrigerant detector prior to and

during work, to ensure the technician is aware of potentially toxic or flammable

atmospheres. Ensure that the leak detection equipment being used is suitable

for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or

intrinsically safe.

(4) If any hot work is to be conducted on the refrigerating equipment or any

associated parts, appropriate fire extinguishing equipment shall be available to

hand. Have a dry powder or CO2fire extinguisher adjacent to the charging area.

(5) No person carrying out work in relation to a refrigerating system which involves

exposing any pipe work shall use any sources of ignition in such a manner

that it may lead to the risk of fire or explosion. All possible ignition sources,

including cigarette smoking, should be kept sufficiently far away from the site

of installation, repairing, removing and disposal, during which 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.

(6) 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.

(7) 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 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.

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•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 suitably protected against

being so corroded.

(8) Repair and maintenance to electrical components shall include initial safety

checks and component inspection procedures. 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.

This shall be reported to the owner of the equipment so all parties are advised.

Initial safety checks shall include:

•That capacitors are discharged. This shall be done in a safe manner to avoid

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.

•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.

•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.

•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.

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REMOVAL AND EVACUATION

CAUTION

•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 Oxygen free nitrogen (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 potential ignition

sources and there is ventilation available.

CHARGING PROCEDURES

NOTE:

Refer to the Installation Instructions attached to the outdoor unit.

DECOMMISSIONING

CAUTION

•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.

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•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 overfill cylinders. (No more than 80% volume liquid charge).

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

j) When the cylinders have been filled correctly and the process completed, make

sure that the cylinders and the equipment are removed from site promptly and

all isolation valves on the equipment are closed off.

k) Recovered refrigerant shall not be charged into another 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.

RECOVERY

NOTE:

Refer to the Installation Instructions attached to the outdoor unit.

NOTICE

The English text is the original instructions. Other languages are translations of the original instructions.

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IMPORTANT ........................2

Please Read Before Starting

1. GENERAL ......................11

1-1. Tools Required for Installation (not

supplied)

1-2. Accessories Supplied with Unit

1-3. Type of Copper Tube and Insulation

Material

1-4. Additional Materials Required for

Installation

2. SELECTING THE INSTALLATION

SITE...........................13

2-1. Indoor Unit

3. HOW TO INSTALL THE INDOOR

UNIT ..........................14

3-1. Preparation for Suspending

3-2. Suspending the Indoor Unit

3-3. Placing the Unit Inside the Ceiling

3-4. How to Process Tubing

3-5. Installing the Drain Pipe

3-6. Important Note for Wiring 4-Way Cassette

60 × 60 Type

4. ELECTRICAL WIRING ............21

4-1. General Precautions on Wiring

4-2. Wire Length and Wire Diameter for Power

Supply System

4-3. Wiring System Diagrams

5. HOW TO PROCESS TUBING .......34

5-1. Connecting the Refrigerant Tubing

5-2. Connecting Tubing Between Indoor and

Outdoor Units

5-3. Insulating the Refrigerant Tubing

5-4. Taping the Tubes

5-5. Finishing the Installation

6. HOW TO INSTALL THE TIMER REMOTE

CONTROLLER OR HIGH-SPEC WIRED

REMOTE CONTROLLER (OPTIONAL

PART) .........................38

NOTE

Refer to the Installation Instructions attached

to the optional Timer Remote Controller or

optional High-spec Wired Remote Controller.

7. HOW TO INSTALL THE PANEL FOR

CASSETTE .....................39

7-1. Preparation for Panel for Cassette

Installation

7-2. How to Install the Panel for Cassette

7-3. Others

8. HOW TO INSTALL WIRELESS REMOTE

CONTROLLER ..................46

NOTE

Refer to the Installation Instructions attached to

the optional Wireless Remote Controller.

9. TEST RUN......................47

9-1. Precautions

9-2. Test Run Procedure

9-3. Items to Check Before the Test Run

9-4. Check the Combination (wiring) of Indoor

and Outdoor Units

9-5. Address Setting : 2-LINE CONNECTION

9-6. Address Setting : 3-LINE CONNECTION

9-7. Auto Address Setting Using the Remote

Controller

9-8. How to Set Refrigerant System Address

(Only outdoor PZ2 and PZH2 series)

9-9. Checking the Indoor Unit Addresses

9-10. Test Run Using the Remote Controller

9-11. Main-Sub Remote Controller Control

10. CHECKLIST AFTER INSTALLATION

WORK .........................70

11. APPENDIX .....................71

■Care and Cleaning

■Troubleshooting

■Tips for Energy Saving

Important Information Regarding

The Refrigerant Used ............74

NOTE

Refer to the Installation Instructions attached to

the outdoor unit.

12. CHECK OF DENSITY LIMIT........75

SUPPLEMENT .....................76

INSTALLATION INSTRUCTION

SUPPLEMENT .....................79

Page Page

CONTENTS

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