Attachment -2_ 40VC-8S-TEE -Indoor Unit _Installation manual (1).pdf

1114654502

Installation Manual 1 English

Manuel d’installation 28 Français

Manual de instalación 55 Español

Manual de instalação 82 Português

VRF Underceiling air conditioner Model name:

40VC____S-8S-TEE

Notice: is committed to continuously improving its products to ensure the highest quality and reliability standards, and to meet local regulations and market requirements. All features and specifica-tions are subject to change without prior notice.

Installation Manual

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Contents

1 Precautions for safety

2 Accessory parts

3 Selection of installation place

4 Installation

5 Drain piping

6 Refrigerant piping

7 Electrical connection

8 Applicable controls

9 Test run

10 Maintenance

11 Troubleshooting

12 Specifi cations

Please read this Installation Manual carefully before installing the Air Conditioner.

• This Manual describes the installation method of the indoor unit.

• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.

ADOPTION OF NEW REFRIGERANT

This Air Conditioner uses R410A an environmentally friendly refrigerant.

Original instruction

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EN

Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.

After completing the installation work, hand over this Installation Manual as well as the Owner’s Manual provided to the user, and ask the user to keep them in a safe place for future reference.

Generic Denomination: Air Conditioner

Defi nition of Qualifi ed Installer or Qualifi ed Service Person The air conditioner must be installed, maintained, repaired and removed by a qualifi ed installer or qualifi ed service person. When any of these jobs is to be done, ask a qualifi ed installer or qualifi ed service person to do them for you. A qualifi ed installer or qualifi ed service person is an agent who has the qualifi cations and knowledge described in the table below.

Work undertaken Protective gear worn All types of work Protective gloves ‘Safety’ working clothing

Electrical-related work Gloves to provide protection for electricians Insulating shoes Clothing to provide protection from electric shock

Work done at heights (50 cm or more) Helmets for use in industry

Transportation of heavy objects Shoes with additional protective toe cap

Repair of outdoor unit Gloves to provide protection for electricians

Agent Qualifi cations and knowledge which the agent must have

Qualifi ed installer

• The qualifi ed installer is a person who installs, maintains, relocates and removes the air conditioners. He or she has been trained to install, maintain, relocate and remove the air conditioners or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations.• The qualifi ed installer who is allowed to do the electrical work involved in installation, relocation and removal has the qualifi cations pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.• The qualifi ed installer who is allowed to do the refrigerant handling and piping work involved in installation, relocation and removal has the qualifi cations pertaining to this refrigerant handling and piping work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.• The qualifi ed installer who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

Qualifi ed service person

• The qualifi ed service person is a person who installs, repairs, maintains, relocates and removes the air conditioners. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations.• The qualifi ed service person who is allowed to do the electrical work involved in installation, repair, relocation and removal has the qualifi cations pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.• The qualifi ed service person who is allowed to do the refrigerant handling and piping work involved in installation, repair, relocation and removal has the qualifi cations pertaining to this refrigerant handling and piping work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.• The qualifi ed service person who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

Defi nition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing.

In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.

Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries.

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■Warning indications on the air conditioner unit 1 Precautions for safety Warning indication Description

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect all remote electric power supplies before servicing.

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect all remote electric power supplies before servicing.

WARNING

Moving parts.

Do not operate unit with grille removed.

Stop the unit before the servicing.

WARNING

Moving parts.

Do not operate unit with grille removed.

Stop the unit before the servicing.

CAUTION

High temperature parts.

You might get burned when removing this panel.

CAUTION

High temperature parts.

You might get burned when removing this panel.

CAUTION

Do not touch the aluminum fi ns of the unit.

Doing so may result in injury.

CAUTION

Do not touch the aluminium fi ns of the unit.

Doing so may result in injury.

CAUTION

BURST HAZARD

Open the service valves before the operation, otherwise there might be the burst.

CAUTION

BURST HAZARD

Open the service valves before the operation, otherwise there might be the burst.

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

WARNING

General

• Before starting to install the air conditioner, read through the

Installation Manual carefully, and follow its instructions to install the air conditioner.

• Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to do installation work. Inappropriate installation may result in water leakage, electric shock or fi re.

• Do not use any refrigerant different from the one specifi ed for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

• Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts. Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to remove the intake grille of the indoor unit or service panel of the outdoor unit and do the work required.

• Before carrying out the installation, maintenance, repair or removal work, set the circuit breaker to the OFF position.

Otherwise, electric shocks may result.

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• Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal work is being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake.

• Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to undertake work at heights using a stand of 50 cm or more or to remove the intake grille of the indoor unit to undertake work.

• Wear protective gloves and safety work clothing during installation, servicing and removal.

• Do not touch the aluminium fi n of the unit. You may injure yourself if you do so. If the fi n must be touched for some reason, fi rst put on protective gloves and safety work clothing, and then proceed.

• Before opening the intake grille, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in injury through contact with the rotation parts. Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to remove the intake grille and do the work required.

• When work is performed at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the ladder’s instructions. Also wear a helmet for use in industry as protective gear to undertake the work.

• Before cleaning the fi lter or other parts of the outdoor unit, set the circuit breaker to OFF without fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.

• Before working at heights, put a sign in place so that no-one will approach the work location, before proceeding with the work.

Parts and other objects may fall from above, possibly injuring a person below. While carrying out the work, wear a helmet for protection from falling objects.

• The refrigerant used by this air conditioner is the R410A.

• The air conditioner must be transported in stable condition.

If any part of the product is broken, contact the dealer.

• When the air conditioner must be transported by hand, carry it by two or more people.

• Do not move or repair any unit by yourself. There is high voltage inside the unit. You may get electric shock when removing the cover and main unit.

• To transport the air conditioner, wear shoes with additional protective toe caps.

• To transport the air conditioner, do not take hold of the bands around the packing carton. You may injure yourself if the bands should break.

• This appliance is intended to be used by expert or trained users in shops, in light industry, or for commercial use by lay persons.

Selection of installation location

• When the air conditioner is installed in a small room, provide appropriate measures to ensure that the concentration of refrigerant leakage occur in the room does not exceed the critical level.

• Do not install in a location where fl ammable gas leaks are possible. If the gas leak and accumulate around the unit, it may ignite and cause a fi re.

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• Install the indoor unit at least 2.5 m above the fl oor level since otherwise the users may injure themselves or receive electric shocks if they poke their fi ngers or other objects into the indoor unit while the air conditioner is running.

• Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise it may cause imperfect combustion.

Installation

• When the indoor unit is to be suspended, the designated hanging bolts (M10 or W3/8) and nuts (M10 or W3/8) must be used.

• Install the air conditioner securely in a location where the base can sustain the weight adequately. If the strength is not enough, the unit may fall down resulting in injury.

• Follow the instructions in the Installation Manual to install the air conditioner. Failure to follow these instructions may cause the product to fall down or topple over or give rise to noise, vibration, water leakage or other trouble.

• Carry out the specifi ed installation work to guard against the possibility of high winds and earthquake. If the air conditioner is not installed appropriately, a unit may topple over or fall down, causing an accident.

• If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fi re, noxious gas may generate.

• Use forklift to carry in the air conditioner units and use winch or hoist at installation of them.

Refrigerant piping

• Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is operated with the valve open and without refrigerant pipe, the compressor sucks air and the refrigeration cycles is over pressurized, which may cause a injury.

• Tighten the fl are nut with a torque wrench in the specifi ed manner. Excessive tighten of the fl are nut may cause a crack in the fl are nut after a long period, which may result in refrigerant leakage.

• After the installation work, confi rm that refrigerant gas does not leak. If refrigerant gas leaks into the room and fl ows near a fi re source, such as a cooking range, noxious gas may be generated.

• When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction.

• Nitrogen gas must be used for the airtight test.

• The charge hose must be connected in such a way that it is not slack.

Electrical wiring

• Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to carry out the electrical work of the air conditioner.

Under no circumstances must this work be done by an unqualifi ed individual since failure to carry out the work properly may result in electric shocks and/or electrical leaks.

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• To connect the electrical wires, repair the electrical parts or undertake other electrical jobs, wear gloves to provide protection for electricians, insulating shoes and clothing to provide protection from electric shocks. Failure to wear this protective gear may result in electric shocks.

• Use wiring that meets the specifi cations in the Installation Manual and the stipulations in the local regulations and laws.

Use of wiring which does not meet the specifi cations may give rise to electric shocks, electrical leakage, smoking and/or a fi re.

• Connect earth wire. (Grounding work)

• Incomplete grounding causes an electric shock.

• Do not connect earth wires to gas pipes, water pipes, and lightning conductor or telephone earth wires.

• After completing the repair or relocation work, check that the earth wires are connected properly.

• Install a circuit breaker that meets the specifi cations in the installation manual and the stipulations in the local regulations and laws.

• Install the circuit breaker where it can be easily accessed by the agent.

• When installing the circuit breaker outdoors, install one which is designed to be used outdoors.

• Under no circumstances the power wire must not be extended.

Connection trouble in the places where the wire is extended may give rise to smoking and/or a fi re.

• Electrical wiring work shall be conducted according to law and regulation in the community and installation manual. Failure to do so may result in electrocution or short circuit.

Test run

• Before operating the air conditioner after having completed the work, check that the electrical control box cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position. You may receive an electric shock if the power is turned on without fi rst conducting these checks.

• If there is any kind of trouble (such as an error display has appeared, smell of burning, abnormal sounds, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualifi ed service person (*1). Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until qualifi ed service person (*1) arrives.

Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks or other trouble.

• After the work has fi nished, use an insulation tester set (500 V Megger) to check the resistance is 1 MΩ or more between the charge section and the non-charge metal section (Earth section).

If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.

• Upon completion of the installation work, check for refrigerant leaks and check the insulation resistance and water drainage.

Then conduct a test run to check that the air conditioner is operating properly.

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CAUTION

New refrigerant air conditioner installation

• This air conditioner adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.

• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is approx.

1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also been changed.

Therefore, do not let water, dust, former refrigerant, or refrigerating oil enter the refrigerating cycle during installation work.

• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the main unit and installation tools are changed from those for the conventional refrigerant.

• Accordingly the exclusive tools are required for the new refrigerant (R410A).

• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.

(*1) Refer to the “Defi nition of Qualifi ed Installer or Qualifi ed Service Person.”

Explanations given to user

• Upon completion of the installation work, tell the user where the circuit breaker is located. If the user does not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble has occurred in the air conditioner.

• If the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualifi ed service person (*1) to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed.

• After the installation work, follow the Owner’s Manual to explain to the customer how to use and maintain the unit.

Relocation

• Only a qualifi ed installer (*1) or qualifi ed service person (*1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualifi ed individual since a fi re, electric shocks, injury, water leakage, noise and/or vibration may result.

• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe.

Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air or other gas to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in rupture, injury or other trouble.

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2 Accessory parts 3 Selection of installation place Avoid installing in the following places.

Select a location for the indoor unit where the cool or warm air will circulate evenly.

Avoid installation in the following kinds of locations.

• Saline area (coastal area).

• Locations with acidic or alkaline atmospheres (such as areas with hot springs, factories where chemicals or pharmaceuticals are made and places where the exhaust air from combustion appliances will be sucked into the unit).

Doing so may cause the heat exchanger (its aluminum fi ns and copper pipes) and other parts to become corroded.

• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of the air conditioner, it may spontaneously combust and start a fi re.

• Locations with atmospheres with mist of cutting oil or other types of machine oil.

Doing so may cause the heat exchanger to become corroded, mists caused by the blockage of the heat exchanger to be generated, the plastic parts to be damaged, the heat insulators to peel off, and other such problems to result.

• Locations where vapors from food oils are formed (such as kitchens where food oils are used).

Blocked fi lters may cause the air conditioner’s performance to deteriorate, condensation to form, the plastic parts to be damaged, and other such problems to result.

• Locations near obstructions such as ventilation openings or lighting fi xtures where the fl ow of the blown air will be disrupted (a disruption of the air fl ow may cause the air conditioner’s performance to deteriorate or the unit to shut down).

• Locations where an in-house power generator is used for the power supply.

The power line frequency and voltage may fl uctuate, and the air conditioner may not work properly as a result.

• On truck cranes, ships or other moving conveyances.

• The air conditioner must not be used for special applications (such as for storing food, plants, precision instruments or art works).

(The quality of the items stored may be degraded.)

• Locations where high frequencies are generated (by inverter equipment, in-house power generators, medical equipment or communication equipment).

(Malfunctioning or control trouble in the air conditioner or noise may adversely affect the equipment’s operation.)

• Locations where there is anything under the unit installed that would be compromised by wetness.

(If the drain has become blocked or when the humidity is over 80 %, condensation from the indoor unit will drip, possibly causing damage to anything underneath.)

• In the case of the wireless type of system, rooms with the inverter type of fl uorescent lighting or locations exposed to direct sunlight.

(The signals from the wireless remote controller may not be sensed.)

• Locations where organic solvents are being used.

• The air conditioner cannot be used for liquefi ed carbonic acid cooling or in chemical plants.

• Location near doors or windows where the air conditioner may come into contact with high-temperature, high-humidity outdoor air.

(Condensation may occur as a result.)

• Locations where special sprays are used frequently.

Part name Q’ty Shape Usage

Installation Manual 1 This manual (Hand over to customers)

Heat insulating pipe 2 For heat insulation of pipe connecting section

Washer 4 M10 × Ø25 For holding down unit

Hose band 2 For connecting drain pipe

Drain hose 1 For connecting drain pipe

Bushing 1 For protection of edge at power taking-in port

Heat insulator 1 For heat insulation of drain hose (10 t × 190 × 190)

Heat insulator of top plate 1 For upper pipe hole of indoor unit (6 t × 120 × 160)

Banding band 6 For heat insulation of pipe connecting section (n=4) and drain hose heat insulator (n=2).

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0 102

D C

E

66109

33 85

A

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250 or more 250 or more

Approx. 8 m

Left drain pipe connecting port

Refrigerant pipe (Gas side) B (Hanging position)

Refrigerant pipe (Liquid side)

Power supply wire take-in port (knockout hole Ø40)

Signal receiving unit mounting section or m or e

■Installation space Reserve suffi cient space required for installation or service work.

■Ceiling height ■External dimensions

■In case of wireless type

If height of ceiling exceeds 3.5 m, hot air becomes diffi cult to reach the fl oor surface, and then the change of setup of high ceiling is necessary.

For the change method of high ceiling, refer to the application control, “Installing indoor unit on high ceiling” in this Manual.

▼Height list of ceiling possible to be installed

The lighting time of the fi lter sign (notifi cation of fi lter cleaning) on the remote controller can be changed according to installation conditions.

When it is diffi cult to obtain satisfactory heating due to location place of the indoor unit or the structure of the room, the detection temperature of heating can be raised.

For change the setup time, refer to the application control, “Filter sign setting” and “To secure better effect of heating” in this Manual.

Decide the position which remote controller is operated and the installation place.

And then refer to the Installation Manual of the wireless remote controller kit sold separately.

(The signal of the wireless type remote controller can be received within approx. 8 m. This distance is a criterion and varies a little according to capacity of the battery)

• To prevent malfunction, select a place where is not affected by a fl uorescent lamp or direct sunlight.

• Two wireless-type indoor units can be set in a room.

4 Installation

Model Possible installed ceiling height

015S to 027S Up to 4.0 m

036S to 056S Up to 4.3 m

Model 015S to 027S 036S to 056S SET DATA

Standard (Factory default) Up to 3.5 m Up to 3.5 m 0000

High ceiling (1) Up to 4.0 m Up to 4.3 m 0003

(Unit: mm)

Drain pipe connecting port

Remote controller wire take-in port

Remote controller wire take-in port (Knockout hole)

(H an gi ng p os iti on

Upper pipe draw-out port (knockout hole) Power supply wire take-in port

(knockout hole Ø40)

Left drain pipe draw-out port (knockout hole)

Model A B C D E 015S, 018S 950 906

351 270 353 024S, 027S 1270 1223

036S to 056S 1586 1540 376 303 378

(Unit: mm)

CAUTION

Strictly comply with the following rules to prevent damage of the indoor units and human injury.

• Do not put a heavy article on the indoor unit or let a person get on it. (Even units are packaged)

• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by necessity, use buffering cloth or other material to not damage the unit.

• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specifi ed.

• To install vibration isolation material to hanging bolts, confi rm that it does not increase the unit vibration.

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EN

CAUTION

Cushions are inserted between the side panel and hanging hook for transportation.

(In the two places shown above) Remove them before installation.

Installation pattern

Ceiling surface

Wall face

Cushion

Additional hole required when Drain-Up Kit is used (Ø100)

Pipe hole on top face (Ø100)

Back side of chassis

Backside cover Top face of chassis

Pipe hole on back side (Ø100)

Lateral side of chassis

Slide

Air intake grille fi xing knob

Hinge

Air intake grille

Side panel

Side panel fi xing screw

Slide forward.

Louver

■Installation of hanging bolt

• Consider the piping / wiring after the unit is hung to determine the location of the indoor unit installation and orientation.

• After the location of the indoor unit installation has been determined, install hanging bolts.

• For the dimensions of the hanging bolt pitches, refer to the external view and installation pattern.

Procure hanging bolts washer and nuts for installing the indoor unit (these are not supplied).

Hanging bolt M10 or W3/8 4 pieces

Nut M10 or W3/8 8 pieces

• To fasten the hanging bracket from above and below, twelve pieces of nuts are required.

How to use attached installation pattern Using the pattern, positioning of the hanging bolt and pipe hole can be performed.

The installation pattern is printed on the packing carton. Cut it off the carton.

* As an error to some degree may generate on the pattern size due to temperature and humidity, be sure to confi rm the size.

Hole for drawing out pipe from top face (Bottom View)

Lateral side of chassis

Hole for drawing out pipe from back side (Front View)

Installation of hanging bolt Use M10 hanging bolts (4 pcs, locally procured).

Matching to the existing structure, set pitch according to size in the “External dimensions”.

■ Installation of remote controller (Sold separately)

For installation of the remote controller, follow the Installation Manual attached with the remote controller.

• Pull out the remote controller cord together with the refrigerant pipe or drain pipe.

Pass the remote controller cord through upper side of the refrigerant pipe and drain pipe.

• Do not leave the remote controller at a place exposed to the direct sunlight and near a stove.

• Operate the remote controller, confi rm that the indoor unit receives a signal surely, and then install it.

(Wireless type)

• Keep 1 m or more from the devices such as television, stereo.

(Disturbance of image or noise may generate.)

(Wireless type)

■Before installation

Indoor unit m m or le ssCeiling surface

Hanging bracket

New concrete slab Install the bolts with insert brackets or anchor bolts.

(Blade type bracket)

(Slide type bracket)

Rubber

(Pipe hanging anchor bolt)

Anchor bolt

Steel fl ame structure Use existing angles or install new support angles.

Hanging bolt

Hanging bolt Support angle

Existing concrete slab Use a hole-in anchors, hole-in plugs, or a hole-in bolts.

1 Removal of air intake grille

1) Remove the screws of air intake grille fi xing knob on a side of each fi lter.

2) Slide the air intake grille fi xing knobs (two positions) toward the arrow direction (OPEN), and then open the air intake grille.

3) With the air intake grille open, hold the hinge from above and below with one hand and take out the air intake grille with the other hand while gently pushing it. (There are two air intake grilles.)

2 Removal of side panel After removing the side panel fi xing screws (1 each at right and left), slide the side panel forward and then remove it.

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>PP< FRO

Ø100

– 11 –

Grooves

Rear cover

Opened when refrigerant pipe is taken out from the rear side Opened when only drain pipe is taken out from the rear side

Groove

Side panel (Right)

Side panel (Left side)Groove

Indoor unit

Hanging bolt (locally procured)

Ceiling surface

Hanging metal

Washer (Accessory)

Double nut (locally procured)

Nut (locally procured)

Indoor unit

Hanging bolt (locally procured)

Ceiling surface

Hanging metal

Washer (Accessory)

Double nut (locally procured)

Indoor unit

Hanging bolt (locally procured)

Washer (locally procured)

Washer (Accessory)

Double nut (locally procured)

Ceiling surface to

Washer (Accessory)

Double nut (locally procured)

Hanging bolt

■Draw-out direction of pipe / wire

Decide installation place of the unit and draw-out direction of pipe and wire.

■ Pipe knockout hole In case of taking pipe from the rear side

* Cut off the groove section with a plastic cutter.

<In case of taking pipe from right side>

* Cut off the groove section with a metal saw or plastic cutter.

<In case of taking pipe from left side> Taking pipe from left side is applied only to the drain pipe.

The refrigerant pipe cannot be taken out from the left side.

* Cut off the groove section with a metal saw or plastic cutter.

<In case of taking pipe from upper side> Taking pipe from upper side is applied only to the refrigerant pipe.

When taking out the drain pipe from the upper side, use a drain up kit sold separately.

Open the upper pipe draw-out port (Knockout hole) shown in the external dimensions.

Make the diagonally shaded hole when you do not use the Elbow Piping Kit.

Make only this knockout hole when you use the separately sold Elbow Piping Kit.

After piping, cut off the attached heat insulator of the top plate to pipe shape, and then seal the knockout hole.

■Knockout hole of power wire take-in port

Open the power wire take-in port (Knockout hole) shown in the “External dimensions” and then mount the attached bushing.

■Installation of indoor unit

◆ Preparation before holding down main unit

* Confi rm the presence of the ceiling material beforehand because the fi xing method of hanging metal when the ceiling material is set differs from that when the ceiling material is not set.

<There is ceiling material>

• Fix the hanging bracket as shown below if the ceiling is bent upwards when you fasten lower nuts to the hanging bracket.

<There is no ceiling material>

◆ Holding down of main unit

<Hanging the indoor unit directly from the ceiling> 1 Attach washer and nuts to the hanging bolt.

2 Hang the unit to the hanging bolt as shown the fi gure below.

3 As shown in the fi gure below, fi x the ceiling material securely with the double nuts.

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23-EN 24-EN – 12 –

Screw Hanging bracket

Bolts for fastening the hanging bracket (Loosen these bolts.)

Use bolts to fasten the hanging bracket.

Arched shape

Incorrect

Trap

Indoor Unit

7 to 12 mm

Adjust the length of the bolts for fastening the hanging bracket.

Front (Unit : mm)

N (inside dimension) Ceiling surface

1.5 m to 2 m Support bracket

Heat insulator Downward slope

1/100 or more

As long as possible (Approx. 10 cm)

(Collective piping) Downward slope

1/100 or more VP30

D ra in p an

Adhesive agent prohibited

Soft socket

Attached drain hose

Attached hose band

Soft socket

VP 20 Polyvinyl chloride pipe (locally procured)

◆ Attaching the hanging bracket fi rst

Hanging bolt (locally procured) Hanging bracket fi xing board

Bolts for fastening the hanging bracket (Fasten the bolts tight.)

5 Drain piping

CAUTION

Following the Installation Manual, perform the drain piping work so that water is properly drained. Apply a heat insulation so as not to cause a dew condensation.

Inappropriate piping work may result in water leakage in the room and wet furniture.

• Provide the indoor drain piping with proper heat insulation.

• Provide the area where the pipe connects to the indoor unit with proper heat insulation. Improper heat insulation will cause condensation to form.

• The drain pipe must be sloping downward (at an angle of 1/100 or more), and do not run the pipe up and down

(arched shape) or allow it to form traps. Doing so may cause abnormal sounds.

• Restrict the length of the traversing drain pipe to 20 meters or less. For a long pipe, provide support brackets at intervals of 1.5 to 2 meters to prevent fl apping.

• Install the collective piping as shown in the following fi gure.

• Do not provide any air vents. Otherwise, the drain water will spout, causing water to leak.

• Do not allow any force to be applied to the connection area with the drain pipe.

• A hard PVC pipe cannot be connected to the drain pipe connecting port of the indoor unit. Be absolutely sure to use the fl exible hose provided for the connections with the drain pipe connecting port.

• Adhesive agents cannot be used for the drain pipe connecting port (hard socket) of the indoor unit. Be absolutely sure to secure the pipe using the hose bands provided. Use of an adhesive agent may damage the drain pipe connecting port or cause water to leak.

Drain pipe connecting port (hard socket)

■Pipe material, size and insulator The following materials for piping work and insulating process are procured locally.

Pipe material Hard vinyl chloride pipe VP20 (Nominal outer diameter Ø26 mm) Insulator Foamed polyethylene foam, thickness: 10 mm or more

Model N 015S, 018S 867 to 872

024S, 027S 1184 to 1189

036S to 056S 1501 to 1506

1 Remove the screws fastening hanging bracket onto the indoor unit.

2 Loosen the bolts fastening hanging bracket onto the indoor unit and remove the hanging bracket.

3 Adjust the length of the two bolts for fastening the hanging bracket, as shown below.

4 Fasten the hanging bracket with the hanging bolts and ensure that the bracket is level from front to back and from side to side.

5 Attach the indoor unit onto the hanging bracket and fasten it tight with the bolts and screws.

Double nut (locally procured)

Washer (Accessory)

Attached hose band

CAUTION

• The ceiling is not always level. Use the level gauge to measure the level of the ceiling in the width and depth directions. Adjust the bolts for the hanging brackets so that the level error will be within 5 mm.

• Do not lower the air discharge side and the side opposite to the selected drain pipe withdraw.

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25-EN 26-EN

Drain pipe

– 13 –

REQUIREMENT

• Fix the drain hose with the attached hose band, and set the tightening position upward.

• As the draining is the natural water draining, arrange the pipe outside of the unit on the down slope.

• If piping is performed as shown in the fi gure, drain cannot be discharged.

Drain pan

Plug

Drain pipe

Refrigerant pipe

Fit the attached hose band to the end of the hose, lay down the knob, and then tighten hose band.

Drain pan

10 to 15 mm 10 to 15 mm Attached drain hose

Confi rm that soft hose is pushed in up to the end of the drain pan.

Fit the attached hose band to the end of the hose, with both of the two knobs oriented sideways.

■ Connection of drain hose

• Insert the attached drain hose into the drain pipe connecting port on the drain pan up to the end.

• Fit the attached hose band to the end of the pipe connecting port, and then tighten it securely.

■Connecting drain pipe

NO GOOD

Drain pipe

Connect the hard vinyl chloride pipe (locally procured) to the mounted drain hose which was attached. When Plug is detached, the drain pipe is not damaged. It causes the water leak.

In case of taking pipe from the left side In case of taking pipe from the left side, exchange the plug from left to right. Push in the plug of which end is not sharp up to the end.

■Drain up When a down-gradient cannot be secured for the drain pipe, drain-up piping is possible.

• The height of the drain pipe must be 600 mm or less from the underside of the indoor unit.

• When Drain Pump Kit (sold separately) is installed, drain pipe and refrigerant pipe can only be connected from upper direction.

■Heat insulating process

• Using the attached drain hose heat insulator, lap the connecting section and the drain hose without clearance, and then tighten with two handing band so that heat insulator does not open.

• Covering the attached drain hose heat insulator, lap the heat insulator (locally procured) to the drain pipe without clearance.

* Fasten the binding bands in such a manner as to not squeeze the attached insulating material excessively.

Lap the attached heat insulation so that the one end is put on the other end at the upper side.

* Tighten the banding band so that attached heat insulator is not pushed excessively.

Lap covering connecting section between drain pan and drain hose.

Drain pan

Drain hose

Hose band Banding band

Heat insulator (locally procured)

Hose band

Attached heat insulator

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27-EN 28-EN – 14 –

Work using double spanner

Right

A

Upper Back

6 Refrigerant piping

■Take out direction of refrigerant pipe

• The refrigerant pipe connecting sections are located as shown below. (Pipes can be taken out from one of the three directions.)

• Make a pipe knockout hole, referring to the section “Pipe knockout hole”.

* When Drain Pump Kit (sold separately) is installed, a refrigerant pipe can only be taken out from upper direction.

■Connecting refrigerant piping

Flaring diameter size: A (Unit: mm)

* In case of fl aring for R410A with the conventional fl are tool, pull it out approx. 0.5 mm more than that for R22 to adjust to the specifi ed fl are size. The copper pipe gauge is useful for adjusting projection margin size.

• The sealed gas was sealed at the atmospheric pressure so when the fl are nut is removed, there will no “whooshing” sound: This is normal and is not indicative of trouble.

• Use two wrenches to connect the indoor unit pipe.

• Use the tightening torque levels as listed in the table below.

Outer dia. of connecting pipe (mm) Tightening torque (N•m)

6.4 14 to 18 (1.4 to 1.8 kgf•m)

9.5 34 to 42 (3.4 to 4.2 kgf•m)

12.7 49 to 61 (4.9 to 6.1 kgf•m)

15.9 63 to 77 (6.3 to 7.7 kgf•m)

• Tightening torque of fl are pipe connections.

Pressure of R410A is higher than that of R22.

(Approx. 1.6 times) Therefore, using a torque wrench, tighten the fl are pipe connecting sections which connect the indoor and outdoor units of the specifi ed tightening torque.

Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.

■Evacuation Perform vacuuming from the charge port of valve of the outdoor unit by using a vacuum pump.

For details, follow to the Installation Manual attached to the outdoor unit.

• Do not use the refrigerant sealed in the outdoor unit for evacuation.

REQUIREMENT

For the tools such as charge hose, use those manufactured exclusively for R410A.

Refrigerant amount to be added For addition of the refrigerant, add refrigerant “R410A” referring to the attached Installation Manual of outdoor unit.

Use a scale to charge the refrigerant of specifi ed amount.

REQUIREMENT

• Charging an excessive or too little amount of refrigerant causes a trouble of the compressor.

Charge the refrigerant of specifi ed amount.

• A personnel who charged the refrigerant should write down the pipe length and the added refrigerant amount in the F-GAS label of the outdoor unit. It is necessary to fi x the compressor and refrigeration cycle malfunction.

Open the valve fully Open the valve of the outdoor unit fully. A 4 mm-hexagonal wrench is required for opening the valve.

For details, refer to the Installation Manual attached to the outdoor unit.

Gas leak check Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section or cap of the valve.

REQUIREMENT

Use a leak detector manufactured exclusively for HFC refrigerant (R410A, R134a).

Outer dia. of copper pipe A +0 –0.4

6.4 9.1

9.5 13.2

12.7 16.6

15.9 19.7

■Permissible piping length and height difference

They vary depending on the outdoor unit. For details, refer to the Installation Manual attached to the outdoor unit.

■Pipe size

Model Pipe size (mm)

Gas side Liquid side

015S to 018S Ø12.7 Ø6.4

024S to 056S Ø15.9 Ø9.5

Flaring

1 Cut the pipe with a pipe cutter.

Remove burrs completely. (Remaining burrs may cause gas leakage.)

2 Insert a fl are nut into the pipe, and fl are the pipe.

Use the fl are nut provided with the unit or the one used for the R410A refrigerant. The fl aring dimensions for R410A are different from the ones used for the conventional R22 refrigerant. A new fl are tool manufactured for use with the R410A refrigerant is recommended, but the conventional tool can still be used if the projection margin of the copper pipe is adjusted to be as shown in the following table.

Projection margin in fl aring: B (Unit: mm)

Outer dia. of copper pipe R410A tool used Conventional tool used 6.4, 9.5

0 to 0.5 1.0 to 1.5 12.7, 15.9

B

CAUTION

Tightening with an excessive torque may crack the nut depending on installation conditions.

CAUTION

When the refrigerant pipe is long, provide support brackets at intervals of 2.5 m to 3 m to clamp the refrigerant pipe. Otherwise, abnormal sound may be generated.

Use the fl are nut attached with the indoor unit or R410A fl are nut.

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29-EN 30-EN

– 15 –

Attached banding band

Fix it with vinyl tape

Face the incision upward.

Local piping side

Attached heat insulation pipe

7 Electrical connection Heat insulation process Apply heat insulation for the pipes separately at liquid side and gas side.

• For the heat insulation to the pipes at gas side, use the material with heat-resisting temperature 120 °C or higher.

• To use the attached heat insulation pipe, apply the heat insulation to the pipe connecting section of the indoor unit securely without gap.

REQUIREMENT

• Apply the heat insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of the pipe. (The pipe exposed to the outside causes water leak.)

• Wrap heat insulator with its slits facing up (ceiling side).

■Power supply wire and communication wires specifi cations Power supply wire and communication wires are locally procured.

For the power supply specifi cations, follow to the table below. If capacity is little, it is dangerous because overheat or burnout may be caused.

For specifi cations of the power capacity of the outdoor unit and the power supply wires, refer to the Installation Manual attached to the outdoor unit.

Indoor unit power supply

• For the power supply of the indoor unit, prepare the exclusive power supply separated from that of the outdoor unit.

• Arrange the power supply, circuit breaker, and main switch of the indoor unit connected to the same outdoor unit so that they are commonly used.

• Power supply wire specifi cation: Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.

CAUTION

• If incorrect / incomplete wiring is carried out, it will cause an electrical fi re or smoke.

• Use the cord clamps attached to the product.

• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires when peeling them.

• Use the power cord and system interconnection wire of specifi ed thickness, type, and protective devices required.

• Do not connect 208V-240V power to the terminal blocks ( , , , ) for control wiring. (Otherwise, the system will fail.)

• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.

The coating may melt resulting in an accident.

REQUIREMENT

• For power supply wiring, strictly conform to the Local Regulation in each country.

• For wiring of power supply of the outdoor units, follow the Installation Manual of each outdoor unit.

• After connecting wires to the terminal blocks, provide a trap and fi x wires with the cord clamp.

• Run the refrigerant piping line and control wiring line in the same line.

• Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.

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31-EN 32-EN

Indoor unit

Remote controller

Indoor unit Indoor unit Indoor unit

R (L)

S (N)

– 16 –

EN

Electrical control box cover

P.C. board

Terminal block

Power supply wire

Power supply wire Run the power supply wire here through the clamp base and fi x it with a cord clamp.

▼Connecting power supply wire and the system interconnection wire Power supply terminal block

Interconnection wire / Remote controller terminal block

System interconnection wires Run the system interconnection wire here through the clamp base and fi x it with a cord clamp.

◆ Wire connection

REQUIREMENT

• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.

• Pass the wires through the bushing of wire connection holes of the indoor unit.

• Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing.

• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)

1 Loosen the cover mounting screws (2 positions) of the electrical control box, and then remove the cover.

2 Connect the indoor power supply wire, system interconnection wires and the remote controller wire to the terminal block of the electrical control box.

3 Tighten screws of the terminal block securely, and fi x the wires with code clamp attached to the electrical control box. (Do not apply tension to the connecting section of the terminal block.)

4 Mount the cover of the electrical control box so that it does not pinch the wires.

▼Power supply

Power supply 220V-240V ~, 50Hz 208V-230V ~, 60Hz

Power supply switch / circuit breaker or power supply wiring / fuse rating for indoor units should be selected by the accumulated total current values of the indoor units.

Power supply wiring Below 50 m 2.5 mm2

Control wiring, Central controller wiring

• 2-core with polarity wires are used for the Control wiring between indoor unit and outdoor unit and Central controller wiring.

• To prevent noise trouble, use 2-core shield wire.

• The length of the communication line means the total length of the inter-unit wire length between indoor and outdoor units added with the central control system wire length.

▼Communication line

Control wiring between indoor units, and outdoor unit (2-core shield wire) Wire size (Up to 1000 m) 1.25 mm²

(Up to 2000 m) 2.0 mm²

Central control line wiring (2-core shield wire) Wire size (Up to 1000 m) 1.25 mm²

(Up to 2000 m) 2.0 mm²

Remote controller wiring

• 2-core with non-polarity wire is used for wiring of the remote…