TOSHIBA MMU-AP0 154SH-E, 184SH-E, 244SH-E air conditioner Installation Manual

+00EH99880399_01EN.book Page 1 Monday, April 4, 2011 11:24 AM

AIR CONDITIONER (MULTI TYPE)

Installation Manual

Indoor Unit

Model name:

1-Way Cassette Type

MMU-AP0154SH-E

MMU-AP0184SH-E

MMU-AP0244SH-E

Installation Manual

English


SMMS 1-Way Cassette SH Type

Original instruction

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.

Contents

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

2 Accessory Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Selection of Installation Place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Drain Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

8 Applicable Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9 Test Run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

12 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22


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Thank you for purchasing this Toshiba air conditioner.

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 with the outdoor unit to the user, and ask the user to keep them in a safe place for future reference.

Generic Denomination: Air Conditioner

Definition of Qualified Installer or Qualified Service Person

The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.

A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the following table.

Agent

Qualified installer

Qualified service person

Qualifications and knowledge which the agent must have

• The qualified installer is a person who installs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation 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 qualified installer who is allowed to do the electrical work involved in installation, relocation and removal has the qualifications 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 made by Toshiba Carrier Corporation 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 qualified installer who is allowed to do the refrigerant handling and piping work involved in installation, relocation and removal has the qualifications 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 made by

Toshiba Carrier Corporation 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 qualified installer who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation 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 qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation 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 qualified service person who is allowed to do the electrical work involved in installation, repair, relocation and removal has the qualifications 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 made by Toshiba Carrier Corporation 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 qualified service person who is allowed to do the refrigerant handling and piping work involved in installation, repair, relocation and removal has the qualifications 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 made by Toshiba Carrier Corporation 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 qualified service person who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation 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.

1-EN 2-EN




Definition 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 following table.

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

Work undertaken Protective gear worn

All types of work

Electrical-related work

Protective gloves

‘Safety’ working clothing

Gloves to provide protection for electricians and from heat

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 and from heat



Warning indications on the air conditioner unit

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 fins of the unit.

Doing so may result in injury.

CAUTION

Do not touch the aluminium fins 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.

3-EN

– 2 –

EN

4-EN





– 3 –


1

Precautions for Safety

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 qualified installer or service person is allowed to do installation work. Inappropriate installation may result in water leakage, electric shock or fire.

• Do not use any refrigerant different from the one specified 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 qualified installer(*1) or qualified 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.

• 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 qualified installer(*1) or qualified 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 fin of the unit. You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves and safety work clothing, and then proceed.

• Do not climb onto or place objects on top of the outdoor unit. You may fall or the objects may fall off of the outdoor unit and result in injury.

• 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 filter 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.

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 flammable gas leaks are possible. If the gas leak and accumulate around the unit, it may ignite and cause a fire.

• 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.

• Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure themselves or receive electric shocks if they poke their fingers 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 specified 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 fire, 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 flare nut with a torque wrench in the specified manner. Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

• After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into the room and flows near a fire 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 qualified installer(*1) or qualified 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 unqualified individual since failure to carry out the work properly may result in electric shocks and / or electrical leaks.

• To connect the electrical wires, repair the electrical parts or undertake other electrical jobs, wear gloves to provide protection for electricians and from heat, 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 specifications in the Installation Manual and the stipulations in the local regulations and laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage, smoking and / or a fire.

• 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 specifications 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 fire.

• 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.

5-EN 6-EN




Test run

• Before operating the air conditioner after having completed the work, check that the electrical parts 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 first 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 qualified service person. Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until qualified service person 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 finished, use an insulation tester set (500 V Megger) to check the resistance is 1 M

Ω 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.

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 qualified service person(*1) to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed.

Relocation

• Only a qualified installer(*1) or qualified service person(*1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, 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.

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.

To Disconnect the Appliance from Main Power Supply.

• This appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm.

The installation fuse (all types can be used) must be used for the power supply line of this conditioner.

(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”



2

Accessory Parts

Part name Q’ty Shape

Installation Manual

CD-ROM

Installation pattern

Installation gauge

1

1

1

1

This manual

—

—

Pattern fixing screw

Heat insulating pipe

Washer

Hose band

8

1

4

2

M5 × 16L

M10 × Ø34

Usage

(Hand over to customers)

(For other languages that do not appear in this Installation Manual, please refer to the enclosed CD-R.)

Installation Manual

For check of ceiling opening and the unit position

For check of ceiling opening and the unit position

(Unit with installation pattern)

For mounting of pattern

For insulating pipe connecting section

For hanging-up of unit

For connecting drain pipe

Flexible hose 1 For adjustment of drain pipe centering

Heat insulator 1 For insulation drain connecting section

Heat insulator

Heat insulator

1

1

For sealing of pipe connecting port (With slit)

For sealing of pipe connecting port (Without slit)

Separate sold parts

The Ceiling panel and remote controller are sold separately. For the installation of these products, follow the

Installation Manuals supplied with them.

EN

8-EN 7-EN

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– 5 –


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 fins and copper pipes) and other parts to become corroded.

• 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 filters 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 fixtures where the flow of the blown air will be disrupted (a disruption of the air flow 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 fluctuate, 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 fluorescent 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 liquefied carbonic acid cooling or in chemical plants.

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

(Condensation may occur as a result.)

• Locations where special sprays are used frequently.

Installation under high-humidity atmosphere

REQUIREMENT

If installing an air conditioner at a place such as the following place where temperature inside of the ceiling is 30 °C or higher and relative humidity is 80 % or higher, dewing may occur at outer surface of the indoor unit and dew may drip down. Therefore be sure to attach the heat insulator to four sides and ceiling surface of the indoor unit.

• Place where much heat is generated in the room such as a kitchen

• Place where inside of the ceiling is used as an intake of fresh air

• Place where heat from ceiling of the roof is insufficiently insulated

Shape of additional heat insulator (Use heat insulator with 10-mm or more thick)

Attached surface

Ceiling surface of unit

Front / rear surface

Left side surface

Right side surface

Size (mm)

1000 × 710

1000 × 210

730 × 210

730 × 210

Q’ty

1

2

1

1

Remarks

—

—

Slits for hanging hook are necessary.

Slits for pipe and hanging hook are necessary.

Installation space

Reserve sufficient space required for installation or service work.

Obstacle

1000 or more


200 or more

(Unit: mm)

9-EN 10-EN




Filter cleaning sign term setting

The lighting term setup of the filter sign (Notification of filter cleaning) of the remote controller can be changed according to the condition of installation.

For setup method, refer to “Filter sign setting” in the Applicable controls of this Manual.

Ceiling height

The installable ceiling height of the air conditioner is within 4.2 m. If the height exceeds 4.2 m, distribution of the air volume becomes poor.

If the ceiling height exceeds the standard value (Factory default) in the following table, hot air is difficult to arrive at floor. Therefore it is necessary to set a high ceiling.

For setting method of the high ceiling, refer to Applicable control “Installing indoor unit on high ceiling” of this manual.

List of installable ceiling height

Model name MMU-

Standard (Factory defult)

High ceiling 1

High ceiling 3

AP015, 018

3.5

4.0

4.2

AP024

3.8

4.0

4.2

(Unit: m)

SET DATA

0000

0001

0003

Corresponded to the installation conditions, lighting time of filter sign of the remote controller (Notification of filter cleaning) can be changed.

If temperature does not rise easily due to installation place or room structure, the detection temperature of heating can be raised.

For setting method, refer to Applicable control “Filter sign setting” and “To secure better effect of heating” of this

manual.

Wireless remote controller

The sensor of indoor unit with wireless remote controller can receive a signal within approx. 8 m. Based upon it, determine a place where the remote controller is operated and the installation place of the indoor unit.

• To prevent a malfunction, select a place where is not influenced by a florescent light or direct sunlight.

• Two or more (Up to 6 units) indoor units with wireless remote controller can be installed in the same room.

A p p ro x. 8

m

11-EN



4

Installation

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.

• To move the indoor unit, hold the hooking brackets (4 positions) only.

Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, resin parts or other parts).

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

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

External dimensions

Wire intake (Knockout hole)

(Unit: mm)

112

Fresh air intake (Ø92 knockout hole)

Ø112 (4-tapping screw under-hole)

C/L

252 248

Drain pipe connecting port (Be sure to connect the attached flexible hose.)

72

Wire intake

C/L

20

1060 Hanging bolt pitch

1190 Ceiling opening size

1230 Panel external size

1000 Unit external size

706

20

94

154

Refrigerant pipe connecting port

Gas side B

Refrigerant pipe connecting port

Liquid side A

Hanging bolt M10 or W3/8 (Local supply)

– 6 –

Lower surface of ceiling

Model name MMU-

AP015, AP018 type

AP024 type

Ceiling panel (Sold separately)

A

Ø6.4

Ø9.5

B

Ø12.7

Ø15.9

For front air discharge unit (Sold separately) knockout hole

EN

12-EN




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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.

• When a ceiling already exists, lay the drain pipe, refrigerant pipe, control wires, and remote controller wires to their connection locations before hanging the indoor unit.

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

Hanging bolt

Nut

Washer

M10 or W3/8

M10 or W3/8

M10

4 pieces

12 pieces

8 pieces

Using the installation pattern (Accessory)

The installation pattern is attached inside of the package cap.

<For existing ceiling>

Use the installation pattern for positioning of the ceiling opening hole and the hanging bolt.

<For new ceiling>

Use the installation pattern for positioning of the opening hole to frame a new ceiling.

• Install the indoor unit after installation of the hanging bolts.

• Attach the installation pattern to the indoor unit with the attached installation pattern fixing screws (M5 ×

16L: 4 pieces). (Screwing to installation brackets of the ceiling panel)

• Open a hole along the outside dimension of the installation pattern to frame a ceiling.

Indoor unit

Installation of hanging bolt

Use M10 hanging bolts (4 pcs, to be local procure).

Matching to the existing structure, set pitch according to size in the unit external view as shown below.

New concrete slab

Install the bolts with insert brackets or anchor bolts.

(Blade type bracket)

(Slide type bracket)

Rubber

Anchor bolt

(Pipe hanging anchor bolt)

Steel flame 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.

Installation of indoor unit

Treatment of ceiling

The ceiling differs according to structure of building.

For details, consult your constructor or interior finish contractor.

In the process after the ceiling board has been removed, it is important to reinforce ceiling foundation

(frame) and to keep horizontal level of installed ceiling correctly in order to prevent vibration of ceiling board.

• Attach the nuts and the M10 flat washers to the hanging bolt.

• Put washers at up and down of the hanging bracket of the indoor unit to hang down the indoor unit.

• Check that four sides are horizontal with a level gauge. (Horizontal degree: Within 5 mm)

Hanging bolt

(W3/8 or M10)

M10 flat washer

(Accessory)

Nut

(W3/8 or M10)

Nut

(W3/8 or M10)

M10 flat washer

(Accessory)

• Detach the installation gauge (accessory) from the installation pattern.

• Check and adjust the positional relation between the indoor unit and ceiling opening hole with the installation gauge, and hanging-up height of the indoor unit. (How to use the installation gauge is printed on the gauge.)

(1)Check lower side of the indoor unit locates at position 17 to 22 mm higher than bottom surface of the ceiling board. (4 corners)

(2)Check clearance between the side of the indoor unit and the ceiling board is 25 mm. (Both left / right)

(3)Check clearance between the front side (piping side) of the indoor unit and the ceiling board is 87.5 mm.

• Size of the side face (longitudinal) of the indoor unit differs according to position. The unit size must be measured at outside of the hanging hooks with the installation gauge.

Installation pattern

(Attached)

Pattern fixing screw M5 × 16L (Attached)

This screw is exclusive to fix the installation pattern.

To install the ceiling panel, use the exclusive mounting screw attached to the ceiling panel (sold separately).

Level gauge


Indoor unit

Hanging hook

Installation gauge

(2)

(1)

(3)

Ceiling panel

CAUTION

Before installation of the indoor unit, remove the protective tape for transportation. If driving the indoor unit with protective tape, abnormal sound may be generated.

Protective tape for transportation

13-EN 14-EN



Installation of ceiling panel

(sold separately)

Install the ceiling panel according to Installation

Manual attached with it after piping / wiring work has completed.

Check that installation of indoor unit and ceiling opening part is correct, and then install it.

REQUIREMENT

• Joint the connecting sections of ceiling panel, ceiling surface, ceiling panel and indoor unit closely.

Any gap between them will cause air leakage and the generate condensation or water leakage.

• Remove the adjust cover (left and right) of the ceiling panel, and then install the ceiling panel onto the indoor unit.

Installation of remote

controller (Sold separately)

For installation of the wired 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.

15-EN

Installation Manual Installation Manual


5

Drain Piping

CAUTION

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

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

Piping / heat insulating

material

Require the following materials for piping and heat insulating at site.

Piping

Heat insulator

Hard vinyl chloride pipe VP25

(Outer dia.: Ø32 mm)

Foam polyethylene:

Thickness 10 mm or more

Flexible hose

Use the attached flexible hose to adjust center discrepancy of the hard vinyl chloride pipe or to adjust the angle.

• Do not use the flexible hose as stretched, or do not deform it more extent than that in the following figure.

• Fix the soft end of the flexible hose with the attached hose band.

• Use the flexible hose on a horizontal level.

NO GOOD OK

Upper side

Max

45° Side face

Riser (Trap)

Max

45°

Side face Side face

90° Bend

REQUIREMENT

• Perform heat insulation of the drain pipes of the indoor unit.

• Perform heat insulation of the connecting part with the indoor unit.

An incomplete heat insulation causes dew drop.

• Set the drain pipe with downward slope (1/100 or more), and do not make swelling or trap on the piping.

It may cause an abnormal sound.

• For length of the traversing drain pipe, restrict to 20 m or less.

In case of a long pipe, provide support brackets with interval of 1.5 - 2 m in order to prevent waving.

1.5 - 2 m

Support bracket

Heat insulator

1/100 or more downward

Arched shape

NO

GOOD

Trap

• Set the collective piping as shown in the below figure.

As long as possible (100 mm)

VP25 VP25 VP25

VP30 or more

Downward slope

1/100 or more

• Do not apply force to the connecting part of the drain pipe.

• The hard vinyl-chloride pipe cannot be directly connected to the drain pipe connecting port of the indoor unit.

For connection with the drain pipe connecting port, fix the attached flexible hose with the hose band, otherwise a damage or water leak is caused on the drain pipe connecting port.

EN

16-EN

– 8 –



Drain pipe connecting port

(Hard socket)

Attached hose band

VP25 vinyl chloride pipe

(To be local procure)

Attached flexible hose

Soft socket

Socket for VP25 (To be local procure)

Hard socket

Adhesive inhibited:

Use the attached flexible hose and hose band for connecting the drain hose to the clear drain socket.

If applying the adhesive, socket will be damaged and cause water leakage.

Drain pipe connecting port

(Transparent)

Align the attached hose band to the end of hose, set the tightening position upward, and then tighten it.

Flexible hose

(Accessory)

VP25 vinyl chloride pipe (To be local procure)


– 9 –


Drain up

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

• The height of the drain pipe must be 850 mm or less from the bottom of the ceiling.

• Take the drain pipe out of the drain pipe joint with the indoor unit in 300 mm or less, and bend up the pipe vertically.

• Set downward grading immediately after raising up vertically.


When the electrical and wiring work has been completed

Pour some water by following the method shown in the following figure. Then, while performing a cooling operation, check that the water drains from the drain pipe connecting port (transparent) and that no water is leaking from the drain pipe.

When the electrical and wiring work has not been completed

• Disconnect the float switch connector (3P: red) from the connector (CN34: red) on the printed circuit board inside the electrical parts box. (Before doing this, the power must be turned off.)

• Connect a 220 V to 240 V supply voltage to (L) and (N) on the power supply terminal block. (Do not apply a 220

V to 240 V voltage to (A), (B) of the terminal block. Otherwise, the printed circuit board may be damaged.)

• Pour the water by following the method shown in the following figure. (Amount of water poured: 1500 cc to 2000 cc)

• When the power is turned on, the drain pump automatically starts running. Check whether the water is draining from the drain pipe connecting port, and check that no water is leaking from the drain pipe.

• After checking that the water drains and there are no water leaks, turn off the power, connect the float switch connector to its original location (CN34) on the printed circuit board, and return the electrical parts box to its original position.

Heat exchanger

Black

220 - 240 V, 50 Hz

220 V, 60 Hz

White

Red

Black

Pull out connector CN34

(Red) from P.C. board.

Drain pan

Insert the edge of hose into the drain pan and bend it downward.

Power supply line

300 mm or less

Socket for VP25 vinyl chloride pipe

(To be local procure)

Indoor unit

Underside of ceiling

Connecting drain pipe

• Connect a hard socket (procured locally) to the hard socket of the attached supplied flexible hose.

• Connect a drain pipe (procured locally) to the connected hard socket.

REQUIREMENT

• Connect hard vinyl chloride pipes securely using an adhesive for vinyl chloride to avoid water leakage.

• It takes some time until the adhesive is dried and hardened (refer to the manual of the adhesive). Do not apply stress to the joint with the drain pipe during this time period.

Check the draining

In the test run, check that water drain is properly performed and water does not leak from the connecting part of the pipes.

Check draining also when installed in heating period.

By using a pitcher or hose, pour water (1500 - 2000 cc) into the discharge port before installation of the ceiling panel.

Pour water gradually so that water does not spread on the motor of the drain pump.

CAUTION

Pour water gently so that it does not spread around inside the indoor unit, which may cause a malfunction.

Vessel

Float switch connector (3P)

(CN34: Red)

Pump

Water (1500 cc to 2000 cc)

17-EN 18-EN




Heat insulating process

• As shown in the figure, cover the flexible hose and hose band with the attached heat insulator up to the bottom of the indoor unit without gap.

• Cover the drain pipe seamlessly with a heat insulator to be procured locally so that it overlaps with the attached heat insulator of the drain connecting section.

Wrap the attached heat insulator seamlessly from the surface of the indoor unit.

Flexible hose

Hose band

Attached heat insulator

Heat insulator to be procured locally

Hard vinyl chloride pipe

* Direct the slits and seams of the heat insulator upward to avoid water leakage.



6

Refrigerant Piping

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 flare nut attached with the indoor unit or R410A flare nut.

Projection margin in flaring: B (Unit: mm)

Outer dia. of copper pipe

6.4, 9.5

12.7, 15.9

R410A tool used

0 to 0.5

Conventional tool used

1.0 to 1.5

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 MMU

AP015 to AP018

AP024

Pipe size (mm)

Gas side Liquid side

Ø12.7

Ø15.9

Ø6.4

Ø9.5

Flaring diameter size: A (Unit: mm)

Outer dia. of copper pipe

6.4

9.5

12.7

15.9

A

+0

–0.4

9.1

13.2

16.6

19.7

Connecting refrigerant piping

Flaring

1. Cut the pipe with a pipe cutter.

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

2. Insert a flare nut into the pipe, and flare the pipe.

Use the flare nut provided with the unit or the one used for the R410A refrigerant. The flaring dimensions for R410A are different from the ones used for the conventional R22 refrigerant. A new flare 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.

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

• The sealed gas was sealed at the atmospheric pressure so when the flare 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.

Work using double spanner

EN

20-EN 19-EN

– 10 –



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

Outer dia. of connecting pipe (mm)

6.4

9.5

12.7

15.9

Tightening torque (N•m)

14 to 18 (1.4 to 1.8 kgf•m)

33 to 42 (3.3 to 4.2 kgf•m)

50 to 62 (5.0 to 6.2 kgf•m)

63 to 77 (6.3 to 7.7 kgf•m)

• Tightening torque of flare pipe connections.

Pressure of R410A is higher than that of R22.

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

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

CAUTION

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

Airtight test / air purge, etc.

For air tightness test, adding refrigerant, refer to the

Installation Manual attached to the outdoor unit.

CAUTION

Do not supply power to the indoor unit until the airtight test and vacuuming are completed. (If the indoor unit is powered on, the pulse motor valve is fully closed, which extends the time for vacuuming.)

Open the valve fully

Open the valve of the outdoor unit fully.


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).

Indoor unit

Union

Flare nut

Heat insulation pipe

(Accessory)

Banding band

(locally procured)

Heat insulator of the pipe


– 11 –


7

Electrical Connection

WARNING

• Use the specified wires for wiring connect the

terminals. Securely fix them to prevent external forces applied to the terminals from affecting the terminals.

Incomplete connection or fixation may cause a fire or other trouble.

• Connect earth wire. (grounding work)

Incomplete grounding cause an electric shock.

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

• Appliance shall be installed in accordance with

national wiring regulations.

Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.

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.

• 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.

• After connecting wires to the terminal blocks, provide a trap and fix 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.

CAUTION

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

• Install an earth leakage breaker that is not tripped by shock waves.

If an earth leakage breaker is not installed, an electric shock may be caused.

• Use the cord clamps attached to the product.

• Do not damage or scratch the conductive core and inner insulator of power and inter-connecting wires when peeling them.

• Use the power cord and Inter-connecting wire of specified thickness, type, and protective devices required.

• Do not connect 220 V – 240 V power to the terminal blocks (

U

1

,

U

2

,

A

,

B

) for control wiring. (Otherwise, the system will fail.)

• Do not damage or scratch the conductive core and inner insulator of power and inter-connecting wires when peeling them.

• 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.

Power supply wire and

communication wires specifications

Power supply wire and communication wires are procured locally.

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

For specifications 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 specification: Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.

21-EN 22-EN




▼ Power supply

Power supply

220 V – 240 V ~, 50 Hz

220 V ~, 60 Hz

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 mm

2

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)

Central control line wiring (2-core shield wire)

Wire size

Wire size

(Up to 1000 m) 1.25 mm²

(Up to 2000 m) 2.0 mm²

(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 controller wiring and group remote controllers wiring.

Remote controller wiring, remote controller inter-unit wiring

Wire size: 0.5 mm² to 2.0 mm²

Total wire length of remote controller wiring and remote controller inter-unit wiring = L + L1 + L2 + … Ln

In case of wired type only

In case of wireless type included

Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln

Up to 500 m

Up to 400 m

Up to 200 m

CAUTION

The remote controller wire (Communication line) and AC 220 – 240 V wires cannot be parallel to contact each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise or other factor.

Indoor unit

Remote controller wiring

L

Remote controller

Indoor unit

L1 L2

Remote controller inter-unit wiring

Indoor unit

Ln

(Max. 8 units)

Indoor unit



Wiring between indoor and outdoor units

NOTE

An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically the header unit.

▼ Wiring example

Outdoor Power supply

380 V - 415 V ~, 50 Hz

380 V ~, 60 Hz

Outdoor Power supply

380 V - 415 V ~, 50 Hz

380 V ~, 60 Hz

Circuit breaker Circuit breaker

Earth terminal

L1 L2 L3 N

Header outdoor unit

U1 U2 U3 U4 U5 U6

Earth terminal

L1 L2 L3 N

Follower outdoor unit

U1 U2 U3 U4 U5 U6

Control wiring between outdoor units

Control wiring between indoor and outdoor units

Control wiring between indoor units

Indoor unit

Earth

L N U1 U2 A B

Indoor unit

Earth

L N U1 U2 A B

Indoor unit

Earth

L N U1 U2 A B

Indoor unit

Earth

L N U1 U2 A B

Indoor power supply

220 V - 240 V ~, 50 Hz

220 V ~, 60 Hz

A B

Remote controller

Circuit breaker,

Power switch

Pull box Pull box

A B

Remote controller

Pull box

A B

Remote controller

Group control

23-EN

– 12 –

EN

24-EN




– 13 –


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 or other purpose.

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

• Remove the cover of the electrical control box.

• Slit film of the bushing attached to the wire intake, and then pass wires through the slit.

* To take in wires from the rear side, drill a knockout hole and exchange the bushing at side face.

For the hole remained opened by removing the bushing, adhere the attached heat insulator (without slit) from inside to close the hole.

• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.

(Do not apply tension to the connecting section of the terminal block.)

• Mount the cover of the electrical control box without pinching wires.

• Seal the wire connecting port with the attached heat insulator for sealing of wire connecting port.

(Otherwise dewing may be caused.)

Treating of wiring connecting port

Seal the wire connecting port with heat insulator as shown on the figure.

If sealing is insufficient, dewing is caused in the Electrical control box.

▼ Seal at wire intake

Adhered surface

Remote controller wiring

Strip off approx. 9 mm the wire to be connected.

▼ Wiring diagram

Terminal block for remote controller wiring of indoor unit

A

B

Remote controller wire

(Locally procured)

Slit

Terminal block

A

B

Remote controller unit

Wire intake

P.C. board

Wire intake knockout hole

(Rear side)

Terminal block

Electrical control box

Two screws

Address setup

Set up the addresses as per the Installation Manual supplied with the outdoor unit.

For power supply

Indoor / outdoor control wire and wired remote controller wire

R(L) S(N) U

1

U

2

A B

R

(L)

S

(N)


Earth line

Power supply wire

Cord clamp

Earth screw

25-EN 26-EN




8

Applicable Controls

REQUIREMENT

When the air conditioner is used for the first time, it will take some moments after the power has been turned on before the remote controller becomes available for operations: This is normal and is not indicative of trouble.

• Concerning the automatic addresses (The automatic addresses are set up by performing operations on the outdoor interface circuit board.)

While the automatic addresses are being set up, no remote controller operations can be performed. Setup takes up to 10 minutes (usually about 5 minutes).

• When the power is turned on after automatic address setup

It takes up to 10 minutes (usually about 3 minutes) for the outdoor unit to start operating after the power has been turned on.

Before the air conditioner was shipped from the factory, all units are set to [STANDARD] (factory default). If necessary, change the indoor unit settings.

The settings are changed by operating the wired remote controller.

* The settings cannot be changed by using only a wireless remote controller, simple remote controller or group control remote controller by itself so install a wired remote controller separately as well.

Basic procedure for changing

settings

Change the settings while the air conditioner is not working. (Stop the air conditioner before making

settings.)

CAUTION

Set only the CODE No. shown in the following table: Do

NOT set any other CODE No.

If a CODE No. not listed is set, it may not be possible to operate the air conditioner or other trouble with the product may result.

* The displays appearing during the setting process differ from the ones for previous remote controllers (AMT21E,

AMT31E). (There are more CODE No.)

1

3

4

6

1 5 2

1

Push and hold button and “TEMP.” button simultaneously for at least 4 seconds. After a while, the display flashes as shown in the figure. Confirm that the

CODE No. is [01].

• If the CODE No. is not [01], push button to clear the display content, and repeat the procedure from the beginning. (No operation of the remote controller is accepted for a while after button is pushed.)

(While air conditioners are operated under the group control, “ALL” is displayed first. When

is pushed, the indoor unit number displayed following “ALL” is the header unit.)

(* Display content varies with the indoor unit model.)

27-EN

– 14 –



2

Each time button is pushed, indoor unit numbers in the control group change cyclically. Select the indoor unit to change settings for.

The fan of the selected unit runs and the louvers start swinging. The indoor unit for change settings can be confirmed.

Installing indoor unit on high

ceiling

When the ceiling on which the indoor unit is to be installed is higher than 2.7 meters, the air volume must be adjusted so establish the high-ceiling setting.

• Follow to the basic operation procedure

(

1

→

2

→

3

→

4

→

5

→

6

)

• For the CODE No. in Procedure

3

, specify [5d].

• Select the SET DATA for Procedure

4

from the “List of installable ceiling height” table in this manual.

3

Specify CODE No. [ ] with “TEMP.” /

buttons.

4

Select SET DATA [ ] with “TIME” /

buttons.

5

Push button. When the display changes from flashing to lit, the setup is completed.

• To change settings of another indoor unit, repeat from Procedure

2

.

• To change other settings of the selected indoor unit, repeat from Procedure

3

.

Use button to clear the settings. To make settings after button was pushed, repeat from

Procedure

2

.

6

When settings have been completed, push

button to determine the settings.

When button is pushed, flashes and then the display content disappears and the air conditioner enters the normal stop mode.

(While is flashing, no operation of the remote controller is accepted.)

▼ With a remote controller-less system (group

control)

Besides the switching method using the wired remote controller as a way to establish the high ceiling setting, switching is also possible by changing over the jumper block settings on the indoor P.C. board as shown in the following table.

* However, once the settings are changed, it is necessary to reset the SET DATA to 0000 that placing the jumper block back to the factory default position and rewriting the SET DATA back to 0000 with wired remote controller (sold separately).

• Change over the jumper blocks on the indoor P.C. board, and select the desired setting.

Jumper block positions (CN112, CN111 and CN110 from the left)

Jumper block position

Short

Open

SET DATA

High ceiling

MMU-

AP015

AP018

AP024

CN112 CN111 CN110

0000

3.5 m 3.8 m

CN112 CN111 CN110

0001

4.0 m

CN112 CN111 CN110

0003

4.2 m

EN

28-EN



Filter sign setting

According to the installation condition, the filter sign term (Notification of filter cleaning) can be changed.

Follow to the basic operation procedure

(

1

→

2

→

3

→

4

→

5

→

6

).


3

, specify [01].

• For the [SET DATA] in Procedure

4

, select the SET

DATA of filter sign term from the following table.

SET DATA

0000

0001

0002

0003

0004

Filter sign term

None

150 H

2500 H

(Factory default)

5000 H

10000 H

To secure better effect of

heating

When it is difficult to obtain satisfactory heating due to installation place of the indoor unit or structure of the room, the detection temperature of heating can be raised. Also use a circulator or other machinery to circulate heat air near the ceiling.

Follow to the basic operation procedure

(

1

→

2

→

3

→

4

→

5

→

6

).


3

, specify [06].

• For the set data in Procedure

4

, select the SET

DATA of shift value of detection temperature to be set up from the following table.

SET DATA

0000

0001

0002

0003

0004

0005

0006

Detection temperature shift value

No shift

+1 °C

+2 °C

(Factory default)

+3 °C

+4 °C

+5 °C

+6 °C

Installation Manual Installation Manual

Remote controller sensor

The temperature sensor of the indoor unit senses room temperature usually. Set the remote controller sensor to sense the temperature around the remote controller.

Select items following the basic operation procedure

(

1

→

2

→

3

→

4

→

5

→

6

).

• Specify [32] for the CODE No. in Procedure

3

.

• Select the following data for the SET DATA in

Procedure

4

.

0001 SET DATA

Remote controller sensor

0000

Not used

(Factory default)

Used

When flashes, the remote controller sensor is defective.

Select the SET DATA [0000] (not used) or replace the remote controller.

Group control

In a group control, a remote controller can control up to maximum 8 units.

• The wired remote controller only can control a group control. The wireless remote controller is unavailable for this control.

• For wiring procedure and wires of the individual line

(Identical refrigerant line) system, refer to “Electrical

Connection” in this Manual.

• Wiring between indoor units in a group is performed in the following procedure.

• Connect the indoor units by connecting the remote controller wires from the remote controller terminal blocks (A, B) of the indoor unit connected with a remote controller to the remote controller terminal blocks (A, B) of the other indoor unit. (Non-polarity)

• For address setup, refer to the Installation Manual attached to the outdoor unit.

– 15 –


9

Test Run

Before test run

• Before turning on the power supply, carry out the following procedure.

1) By using 500 V-megger, check that resistance of 1 M

Ω or more exists between the terminal block L to N and the earth (grounding).

If resistance of less than 1 M

Ω is detected, do not run the unit.

2) Check the valve of the outdoor unit being opened fully.

• To protect the compressor at activation time, leave power-ON for 12 hours or more before operating.

• Do not press the electromagnetic contactor to forcibly perform a test run. (This is very dangerous because the protective device does not work.)

• Before starting a test run, set addresses by following the Installation Manual supplied with the outdoor unit.

Execute a test run

• When a fan operation is to be performed for an individual indoor unit, turn off the power, short CN72 on the circuit board, and then turn the power back on. (First set the operating mode to “fan,” and then operate.) When the test run has been performed using this method, do NOT forget to release the shorting of CN72 after the test run is completed.

Operate the unit with the wired remote controller as usual.

For the procedure of the operation, refer to the Owner’s

Manual attached to the outdoor unit.

A forced test run can be executed in the following procedure even if the operation stops by thermostat-

OFF.

In order to prevent a serial operation, the forced test run is released after 60 minutes have passed and returns to the usual operation.

CAUTION

Do not use the forced test run for cases other than the test run because it applies an excessive load to the devices.

Wired remote controller

2, 4

3

1,5

1

Push button for 4 seconds or more.

[TEST] is displayed on the display part and the selection of mode in the test mode is permitted.

2

Push

3

Select the operation mode with button, [ Cool] or [ Heat].

• Do not run the air conditioner in a mode other than [ Cool] or [ Heat].

• The temperature controlling function does not work during test run.

• The detection of error is performed as usual.

4

After the test run, push stop a test run.

button to

(Display part is same as procedure 1.)

5

Push button to cancel (release from) the test run mode.

([TEST] disappears on the display and the status returns to a normal.)

29-EN 30-EN


31-EN




[

Always select

HIGH] air volume.

1

1

2, 3,

4, 5

1,6

1

Push (ON / OFF) button on the remote controller, select [ COOL] or [ HEAT] with (MODE) button, and then select

[ HIGH] with (FAN) button.

2

Cooling test run:

Set the temperature to 18 °C with (temp. setup) buttons.

Heating test run:

Set the temperature to 30 °C with (temp. setup) buttons.

3


After confirming a signal receiving sound “beep” immediately set the temperature to 19 °C with

(temp. setup) buttons.


After confirming a signal receiving sound “beep” immediately set the temperature to 29 °C with

(temp. setup) buttons.

4


After confirming a signal receiving sound “beep” immediately set the temperature to 18 °C with the temp. setup buttons.


After confirming a signal receiving sound “beep” immediately set the temperature to 30 °C with the temp. setup buttons.

5

Repeat procedures

3

→

4

→

5

→

6

.

Indicators “Operation”, “Timer”, and “Ready” in the wireless receiver section flash in approx. 10 seconds, and the air conditioner starts operation.

If any of these indicators does not flash, repeat from procedure

1

.

6

Upon completion of the test run, push

(ON / OFF) button to stop operation.

Overview of test run operations using the wireless remote controller


ON / OFF

→ 18 °C → 19 °C → 18 °C → 19 °C →

18 °C

→ 19 °C → 18 °C → (test run) → ON / OFF


ON / OFF

→ 30 °C → 29 °C → 30 °C → 29 °C →

30 °C

→ 29 °C → 30 °C → (test run) → ON / OFF



10

Maintenance

<Daily maintenance>

▼ Cleaning of air filter

If is displayed on the remote controller, maintain the air filter.

1

Push the button to stop the operation, then turn off the circuit breaker.

4

Vacuum dust with a cleaner or clean the air filter with water.

• When dirt is heavy, it is effective to wash the air filter with neutral detergent dissolved in tepid water or cool water.

– 16 –

8

1, 7

• After cleaning with water, dry the air filter completely in the shade.

5

Install the air filter.

6

Close the air intake grille.

• Close the air intake grille, slide the knobs toward you, and fix the grille securely.

• Fix the screws of air intake grille fixing knob on a side of each filter.

S lid e

2

Open the air intake grille.

• Remove the screws of air intake grille fixing knob on a side of each filter.

• Holding knobs of the air intake grille, push the grille backward (OPEN) and open the grille quietly.

S lid e

Knobs of air intake grille

Air intake grille

Air filter

3

Take out air filter.

• Push hooks of air filter and take out claw of the air intake grille. Pull the air filter toward you to take out the air filter.

Claw of air intake grille

Knobs of air intake grille

Air intake grille

Air filter

7

Turn on the circuit breaker, then push the

button on the remote controller to start the operation.

8

After cleaning, push .

display disappears.

CAUTION

• Do not start the air conditioner while leaving air filter removed.

• Push the filter reset button. ( indication will be turn off.)

Air filter

Claw of air intake grille

Hook of air filter

Hooks of air filter

EN

32-EN




▼ Periodic Maintenance

For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner.

When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended.

Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary.

As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit at least once every 3 months. Ask a professional for this cleaning / maintenance work.

Such maintenance can extend the life of the product though it involves the owner’s expense.

Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and even compressor failure.

▼ Inspection before maintenance

Following inspection must be carried out by a qualified installer or qualified service person.

Parts

Heat exchanger

Fan motor

Fan

Filter

Drain pan

Inspection method

Access from inspection opening and remove the access panel. Examine the heat exchanger if there is any clogging or damages.

Access from inspection opening and check if any abnormal noise can be heard.

Access from inspection opening and remove the access panel. Examine the fan if there are any waggles, damages or adhesive dust.

Go to installed location and check if there are any stains or breaks on the filter.

Access from inspection opening and remove the access panel. Check if there is any clogging or drain water is polluted.

– 17 –


11

Troubleshooting

Confirmation and check

When an error occurred in the air conditioner, an error code and indoor UNIT No. appear on the display part of the remote controller.

The error code is only displayed during the operation.

If the display disappears, operate the air conditioner

according to the following “Confirmation of error log” for

confirmation.

Error code Indoor UNIT No. in which an error occurred

▼ Maintenance List

Part

Heat exchanger

Unit Check (visual / auditory)

Indoor / outdoor Dust / dirt clogging, scratches

Fan motor Indoor / outdoor Sound

Filter

Fan

Air intake / discharge grilles

Drain pan

Ornamental panel, louvres

Exterior

Indoor

Indoor

Dust / dirt, breakage

• Vibration, balance

• Dust / dirt, appearance

Indoor / outdoor Dust / dirt, scratches

Indoor

Indoor

Dust / dirt clogging, drain contamination

Dust / dirt, scratches

Outdoor

• Rust, peeling of insulator

• Peeling / lift of coat

Maintenance

Wash the heat exchanger when it is clogged.

Take appropriate measures when abnormal sound is generated.

• Wash the filter with water when it is contaminated.

• Replace it when it is damaged.

• Replace the fan when vibration or balance is terrible.

• Brush or wash the fan when it is contaminated.

Fix or replace them when they are deformed or damaged.

Clean the drain pan and check the downward slope for smooth drainage.

Wash them when they are contaminated or apply repair coating.

Apply repair coating.

Confirmation of error log

When an error occurred on the air conditioner, the error log can be confirmed with the following procedure.

(The error log is stored in memory up to 4 errors.)

The log can be confirmed from both operating status and stop status.

2


3

1

1

When and buttons are pushed simultaneously for 4 seconds or more, the following display appears.

If is displayed, the mode enters in the error log mode.

• [01: Order of error log] is displayed in CODE

No..

• [Error code] is displayed in CHECK.

• [Indoor unit address in which an error occurred] is displayed in Unit No..

2

Every pushing of button used to set temperature, the error log stored in memory is displayed in order.

The numbers in CODE No. indicate CODE No.

[01] (latest)

→ [04] (oldest).

REQUIREMENT

Do not push button because all the error log of the indoor unit will be deleted.

3

After confirmation, push button to return to the usual display.

33-EN 34-EN






35-EN

Check method

On the wired remote controller, central control remote controller and the interface P.C. board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with error of the air conditioner can be found as shown in the following table.

Check code list

The following list shows each check code. Find the check contents from the list according to part to be checked.

• In case of check from indoor remote controller: See “Wired remote controller display” in the list.

• In case of check from outdoor unit: See “Outdoor unit 7-segment display” in the list.

• In case of check from AI-NET central control remote controller: See “AI-NET central control display” in the list.

• In case of check from indoor unit with a wireless remote controller: See “Sensor block display of receiving unit” in the list.

: Lighting, : Flashing, : Goes off

AI-NET: Artificial Intelligence

IPDU: Intelligent Power Drive Unit

ALT: Flashing is alternately when there are two flashing LED.

SIM: Simultaneous flashing when there are two flashing LED.


Sensor block display of receiving unit

Operation Timer Ready Flash

Check code name Judging device

Wired remote controller display

E01

E02

E03

E04

E06

E12

E15

E16

E18

E19

—

E08

E09

E10

E20

E21

E22

E23

E25

E26

E28

E31

—

—

—

Check code

Outdoor unit 7-segment display

Auxiliary code

—

—

—

— —

E06

No. of indoor units in which sensor has been normally received

— E07

E08 Duplicated indoor unit addresses

— —

—

E12

E15

—

01:Indoor / Outdoor units communication

02:Outdoor / Outdoor units communication

—

E16

—

E19

E20

E21

E22

00:Capacity over

01 ~:No. of connected units

—

00:No header

02:Two or more header units

01:Outdoor unit of other line connected

02:Indoor unit of other line connected

02:No header unit

00:Multiple number of header units

—

E23 —

E25

E26

—

No. of outdoor units which received signal normally

E28 Detected outdoor unit number

E31 Number of IPDU (*1)

42

42

42

15

15

15 d2

CF

AI-NET central control display

—

—

97

04

04

—

96

99

CF

42

42

89

97, 99

96

Communication error between indoor unit and remote controller (Detected at remote controller side)

Remote controller transmission error

Communication error between indoor unit and remote controller (Detected at indoor unit side)

Communication circuit error between indoor / outdoor unit (Detected at indoor unit side)

Decrease of No. of indoor units

Communication circuit error between indoor / outdoor unit (Detected at outdoor unit side)

Duplicated indoor unit addresses

Duplicated master remote controllers

Communication error between indoor unit MC

Automatic address start error

No indoor unit during automatic addressing

Capacity over / No. of connected indoor units

Communication error between header and follower units Indoor unit

Outdoor header units quantity error

Other line connected during automatic address

Error in number of heat storage master units

Reduction in number of heat storage units

Sending error in communication between outdoor units

Error in number of heat storage units (trouble with reception)

Duplicated follower outdoor addresses

Decrease of No. of connected outdoor units

Follower outdoor unit error

IPDU communication error

I/F

I/F

I/F

I/F

I/F

I/F

I/F

I/F

Remote controller

Remote controller

Indoor unit

Indoor unit

I/F

I/F

Indoor unit • I/F

Remote controller

Indoor unit

I/F

I/F

I/F

Indoor unit

I/F

EN

– 18 –

36-EN



37-EN


F01

F02

F03

F04

F05

F06

F07

F08

F10

F12

F13

F15

F16

F22

F23

F24

F29

F31

H01

H02

H03

H04

H05

H06

H07

H08

H14

H15

H16

H25

L03

L04

F07

F08

—

F12

F15

F16

F22

F23

F24

—

F31

—

—

—

F04

F05

F06

F13

H01

H02

H03

H04

H05

H06

H07

H08

H14

H15

H16

H25

—

L04

Check code


Auxiliary code

—

—

—

—

—

01:TE1 sensor

02:TE2 sensor

—

—

—

—

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

—

—

—

—

—

—

—

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

—

—

—

—

01:TK1 sensor error

02:TK2 sensor error

03:TK3 sensor error

04:TK4 sensor error

05:TK5 sensor error

—

—

01:TK1 oil circuit system error





—

—

—


– 19 –


44

— d7

—

96

96

1d

17

44

—

20 d7 d4

43

43

12

1C

18

43

B2

43

IF


0F

0d

93

19

A1

18

18

1b

OC

A2




ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

SIM

SIM

Check code name

Indoor unit TCJ sensor error

Indoor unit TC2 sensor error

Indoor unit TC1 sensor error

TD1 sensor error

TD2 sensor error

TE1 sensor error

TE2 sensor error

TL sensor error

TO sensor error

Indoor unit TA sensor error

TS1 sensor error

TH sensor error

Outdoor unit temp. sensor miscabling (TE, TL)

Outdoor unit pressure sensor miscabling (Pd, Ps)

TD3 sensor error

Ps sensor error

Pd sensor error

Indoor unit other error

Indoor unit EEPROM error

Compressor break down

Compressor trouble (lock)

Current detect circuit system error

Comp. 1 case thermo operation

TD1 sensor miswiring

Low pressure protective operation

Oil level down detective protection

Oil level detective temp sensor error

Comp. 2 case thermo operation


Oil level detective circuit error

SIM

SIM


Indoor unit centre unit duplicated

Outdoor unit line address duplicated


IPDU

IPDU

I/F

I/F

I/F

I/F

I/F

Judging device

IPDU

I/F

I/F

I/F

I/F

I/F

Indoor unit

I/F

IPDU

Indoor unit

Indoor unit

Indoor unit

I/F

I/F

I/F

I/F

I/F

Indoor unit

I/F

I/F

I/F

I/F

I/F

Indoor unit

I/F

38-EN






39-EN

P07

P15

P17

P18

P19

P20

P09

P10

P12

P13


L05

L06

L27

L28

L29

L30

—

P01

P03

L07

L08

L09

L10

L17

L20

L26

P04

P05

P22

P26

Check code


Auxiliary code

— —

L06 No. of indoor units with priority

—

L08

—

—

—

—

L10

—

—

—

— —

L26 Number of heat storage units connected

L27 Number of heat storage units connected

L28 —

L29 Number of IPDU (*1)

L30 Detected indoor unit address

L31

—

P03

—

—

—

P04

P05

P07

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

00:

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

P09 Detected heat storage address

P10 Detected indoor unit address

—

P13

—

—

P15

01:TS condition

02:TD condition

P17

P18

—

—

P19 Detected outdoor unit number

P20 —

P22

P26

0*:IGBT circuit

1*:Position detective circuit error

3*:Motor lock error

4*:Motor current detection

C*:TH sensor error

D*:TH sensor error

E*:Inverter DC voltage error (outdoor unit fan)

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

IC

AE bb

E2

O8

22

47

Ob

11

47


96

96

46

46

CF b6

—

11

1E

88

46

98

46

99

99

46

21

AF




SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

SIM

—

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

ALT

Check code name

Duplicated indoor units with priority (Displayed in indoor unit with priority)

Duplicated indoor units with priority (Displayed in unit other than indoor unit with priority)

Group line in individual indoor unit

Indoor unit group / Address unset

Indoor unit capacity unset

Outdoor unit capacity unset

Outdoor unit type mismatch error

Duplicated central control addresses

Too many heat storage units connected

Error in number of heat storage units connected

Too many outdoor units connected

No. of IPDU error

Indoor unit outside interlock

Extended I/C error

Indoor fan motor error

Discharge temp. TD1 error

High-pressure SW system operation

Phase missing detection / Power failure detection

Inverter DC voltage error (comp.)



Heat sink overheat error

No heat storage unit water error

Indoor unit overflow error

Indoor unit fan motor error

Outdoor liquid back detection error

Gas leak detection



4-way valve inverse error

High-pressure protective operation

1A

14

ALT

ALT

Outdoor unit fan IPDU error

Note: Ignore 0 to F displayed in “*” position.

G-TR short protection error

Judging device

I/F

I/F

Indoor unit

Indoor unit, I/F

Indoor unit

I/F

I/F

AI-NET, Indoor unit

I/F

I/F

I/F

I/F

Indoor unit

I/F

Indoor unit

I/F

IPDU

I/F

IPDU, I/F

Heat storage unit

Indoor unit

Indoor unit

I/F

I/F

I/F

I/F

I/F

I/F

IPDU

IPDU

EN

– 20 –

40-EN




– 21 –



P29

P31

—

—

—

*1 Number of IPDU

01: Comp. 1

02: Comp. 2

03: Comp. 1 + Comp. 2

04: Comp. 3

—

—

—

—

P29

Check code


Auxiliary code

01:Comp. 1 side

02:Comp. 2 side

03:Comp. 3 side

—

—

—

—

05: Comp. 1 + Comp. 3

06: Comp. 2 + Comp. 3

07: Comp. 1 + Comp. 2 + Comp. 3

08: Fan


16

47 b7

97

99




ALT

By alarm device

—

—

ALT

ALT

Check code name

Comp. position detective circuit system error

Other indoor unit error

(Group follower indoor unit error)

Error in indoor unit group

AI-NET communication system error

Duplicated network adapters

09: Comp. 1 + Fan

0A: Comp. 2 + Fan

0B: Comp. 1 + Comp. 2 + Fan

0C: Comp. 3 + Fan

0D: Comp. 1 + Comp. 3 + Fan

0E: Comp. 2 + Comp. 3 + Fan

0F: Comp. 1 + Comp. 2 + Comp. 3 + Fan

Error detected by TCC-LINK central control device

Central control device indication

C05

C06

C12

P30

—

—

—

—

Check code


Auxiliary code

—

—


—

—




—

—

— —

—

Differs according to error contents of unit with occurrence of alarm

(L20 is displayed.)

—

TCC-LINK: TOSHIBA Carrier Communication Link.

Check code name

Sending error in TCC-LINK central control device

Receiving error in TCC-LINK central control device

Batch alarm of general-purpose equipment control interface

Group control follower unit error

Decrease of No. of indoor units


Judging device

IPDU

Indoor unit

AI-NET

AI-NET

AI-NET

Judging device

TCC-LINK

TCC-LINK

General-purpose equipment,

I/F

TCC-LINK

41-EN 42-EN




12

Specifications

Model

MMU-AP0154SH-E

MMU-AP0184SH-E

MMU-AP0244SH-E

* Under 70 dBA

Sound power level (dBA)

Cooling Heating

*

*

*

*

*

*

Weight (kg) Main unit (Ceiling panel)

21 (5.5)

21 (5.5)

22 (5.5)



Declaration of Conformity

Manufacturer: Toshiba Carrier Corporation

336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN

Authorized

Representative / TCF holder:

Nick Ball

Toshiba EMEA Engineering Director

Toshiba Carrier UK Ltd.

Porsham Close, Belliver Industrial Estate,

PLYMOUTH, Devon, PL6 7DB.

United Kingdom

Hereby declares that the machinery described below:

Generic Denomination: Air Conditioner

Model / type:

Commercial name:

MMU-AP0154SH-E, MMU-AP0184SH-E, MMU-AP0244SH-E

Super Modular Multi System Air Conditioner

Super Heat Recovery Multi System Air Conditioner

Mini-Super Modular Multi System Air Conditioner (MiNi-SMMS series)

Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing into national law

Complies with the provisions of the following harmonized standard:

EN 378-2: 2008+A1: 2009

NOTE

This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s consent.

EN

44-EN 43-EN

– 22 –


45-EN


Warnings on Refrigerant Leakage

Check of Concentration Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit.

The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its concentration should rise excessively. Suffocation from leakage of R410A is almost non-existent. With the recent increase in the number of high concentration buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power etc.

Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air conditioners. If a single unit of the multi conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device.The concentration is as given below.

Total amount of refrigerant (kg)

Min. volume of the indoor unit installed room (m

3

)

≤ Concentration limit (kg/m 3

)

The concentration limit of R410A which is used in multi air conditioners is 0.3 kg/m

3

.

▼ NOTE 1

If there are 2 or more refrigerating systems in a single refrigerating device, the amounts of refrigerant should be as charged in each independent device.

e.g., charged amount (10 kg)

Outdoor unit e.g., charged amount (15 kg)

Room A Room B Room C Room D Room E Room F

For the amount of charge in this example:

The possible amount of leaked refrigerant gas in rooms A, B and C is 10 kg.

The possible amount of leaked refrigerant gas in rooms D, E and F is 15 kg.

▼ NOTE 2

The standards for minimum room volume are as follows.

1) No partition (shaded portion)


– 23 –


Indoor unit

Important

2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15 % or larger than the respective floor spaces at the top or bottom of the door).

Outdoor unit

Refrigerant piping

Indoor unit

Indoor unit

Very small room

Small room

Medium room

Large room

Mechanical ventilation device - Gas leak detector

▼ NOTE 3

The minimum indoor floor area compared with the amount of refrigerant is roughly as follows:

(When the ceiling is 2.7 m high)

40 m

2 35

30

25

Range below the density limit of

0.3 kg/m

3

(countermeasures not needed)

20

15

10

Range above the density limit of 0.3 kg/m

3

(countermeasures needed)

5

0

10 20 30

Total amount of refrigerant kg


3) If an indoor unit is installed in each partitioned room and the refrigerant piping is interconnected, the smallest room of course becomes the object. But when a mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

Refrigerant piping

Outdoor unit

46-EN






47-EN

– 24 –

EN

48-EN


TOSHIBA MMU-AP0 154SH-E, 184SH-E, 244SH-E air conditioner Installation Manual

Assistant Bot

Installation Manual

Indoor Unit

Model name:

1-Way Cassette Type

Installation Manual

English

ADOPTION OF NEW REFRIGERANT

Contents

 Warning indications on the air conditioner unit

ELECTRICAL SHOCK HAZARD

BURST HAZARD

Precautions for Safety

Accessory Parts

 Separate sold parts

Selection of Installation Place

 Installation under high-humidity atmosphere

 Installation space

 Filter cleaning sign term setting

 Ceiling height

 Wireless remote controller

Installation

 External dimensions

 Installation of hanging bolt

 Installation of indoor unit

 Installation of ceiling panel

(sold separately)

 Installation of remote

controller (Sold separately)

Drain Piping

 Piping / heat insulating

material

 Flexible hose

 Drain up

 Connecting drain pipe

 Check the draining

 Heat insulating process

Refrigerant Piping

 Permissible piping length and

height difference

 Pipe size

 Connecting refrigerant piping

 Airtight test / air purge, etc.

 Open the valve fully

 Heat insulation process

Electrical Connection

 Power supply wire and

communication wires specifications

▼ Power supply

▼ Communication line

 Wiring between indoor and outdoor units

▼ Wiring example

 Wire connection

▼ Seal at wire intake

 Remote controller wiring

▼ Wiring diagram

 Address setup

Applicable Controls

 Basic procedure for changing

settings

Push and hold button and “TEMP.” button simultaneously for at least 4 seconds. After a while, the display flashes as shown in the figure. Confirm that the

CODE No. is [01].

Each time button is pushed, indoor unit numbers in the control group change cyclically. Select the indoor unit to change settings for.

The fan of the selected unit runs and the louvers start swinging. The indoor unit for change settings can be confirmed.

 Installing indoor unit on high

ceiling

Specify CODE No. [ ] with “TEMP.” /

buttons.

Select SET DATA [ ] with “TIME” /

buttons.

Push button. When the display changes from flashing to lit, the setup is completed.

When settings have been completed, push

button to determine the settings.

▼ With a remote controller-less system (group

control)

 Filter sign setting

 To secure better effect of

heating

 Remote controller sensor

Warning indications on the air conditioner unit

Separate sold parts

Installation under high-humidity atmosphere

Installation space

Filter cleaning sign term setting

Ceiling height

Wireless remote controller

External dimensions

Installation of hanging bolt

Installation of indoor unit

Installation of ceiling panel

Installation of remote

Piping / heat insulating

Flexible hose

Drain up

Connecting drain pipe

Check the draining

Heat insulating process

Permissible piping length and

Pipe size

Connecting refrigerant piping

Airtight test / air purge, etc.

Open the valve fully

Heat insulation process

Power supply wire and

Wiring between indoor and outdoor units

Wire connection

Remote controller wiring

Address setup

Basic procedure for changing

Installing indoor unit on high

Filter sign setting

To secure better effect of

Remote controller sensor

Group control

Before test run

Execute a test run

Confirmation and check

Confirmation of error log