Toshiba MCY-MAP0604HT8, MCY-MAP0604HT7, MCY-MAP0804HT7, MCY-MAP0804HT8 Installation Manual

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AIR CONDITIONER (MULTI TYPE)

Installation Manual

Outdoor Unit

Model name:

MCY-MAP0604HT8 MCY-MAP0804HT8 MCY-MAP0604HT7 MCY-MAP0804HT7

For commercial use

Para uso comercial

Para utilização comercial

商业用途

Installation Manual 1

English

Manual de instalación 31

Manual de instalação 61

安装说明书 91

Español

Português

简体中文

Outdoor Unit

WARNING

Installation Manual

–1–

Outdoor Unit

Installation Manual

Original instruction

ADOPTION OF NEW REFRIGERANT

This Air Conditioner uses R410A an environmentally friendly refrigerant.

Contents

1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Installation of new refrigerant air conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Electric wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7 Address setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8 Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1 Precautions for safety

General

• Before starting to install the air conditioner, read through the Installation Manual carefully, and follow its instructions to install the air conditioner. Otherwise, falling down of the unit may occur, or the unit may cause noise, vibration or water leakage.

• Only a qualified installer(*1) or qualified service person(*1) is allowed to do installation work. If installation is carried out by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and / or vibration may result.

• If using separately sold products, make sure to use Toshiba specified products only. Using unspecified products may cause fire, electric shock, water leak or other failure.

• Before opening the 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 service panel of the outdoor unit and do the work required.

• Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breakers for both the indoor and outdoor units to the OFF position. Otherwise, electric shock 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 outdoor 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 working at height, put a sign in place so that no-one will approach the work location before proceeding with the work. Parts or other objects may fall from above, possibly injuring a person below. Also, be sure that workers put on helmets.

• When 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.

• When 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.

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

• You shall ensure that the air conditioner is transported in stable condition. If you find any part of the product broken, contact your dealer.

• Do not disassemble, modify, repair or move the product yourself. Doing so may cause fire, electric shock, injury or water leaks. Ask a qualified installer or qualified service person to do any repairs or to move the product.

Selection of installation location

• If you install the unit in a small room, take appropriate measures to prevent the refrigerant from exceeding the limit concentration even if it leaks. Consult the dealer from whom you purchased the air conditioner when you implement the measures. Accumulation of highly concentrated refrigerant may cause an oxygen deficiency accident.

• Do not install in a location where flammable gas may leaks are possible. If the gas should leak and accumulate around the unit, it may ignite and cause a fire.

• When transporting the air conditioner, wear shoes with protective toe caps, protective gloves and other protective clothing.

• When transporting 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.

• Places where the operation sound of the outdoor unit may cause a disturbance. (Especially at the boundary line with a neighbour, install the air conditioner while considering the noise.)

Installation

• 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 failure.

• The designated bolts (M10) and nuts (M10) for securing the outdoor unit must be used when installing the unit.

• Install the outdoor unit property in a location that is durable enough to support the weight of the outdoor unit. Insufficient durability may cause the outdoor unit to fall, which may result in injury.

• Install the unit in the prescribed manner for protection against strong wind and earthquake. Incorrect installation may result in the unit falling down, or other accidents.

• Be sure to fix the screws back which have been removed for installation or other purposes.

1-EN 2-EN

Outdoor Unit

CAUTION

Installation Manual

Outdoor Unit

Installation Manual

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.

• Ventilate the air if the refrigerant gas leaks during installation. If the leaked refrigerant gas comes into contact with fire, toxic gas may be produced.

• 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.

• 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 be generated.

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.

• When connecting the electrical wires, repairing the electrical parts or undertaking 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.

• When executing address setting, test run, or troubleshooting through the checking window on the electrical control box, put on insulated heat-proof gloves, insulated shoes and other clothing to provide protection from electric shock. Otherwise you may receive an electric shock.

• 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.

• Check that the product is properly earthed. (grounding work) Incomplete earthing may cause electric shock.

• Do not connect the earth line to a gas pipe, water pipe, lightning conductor, or a telephone earth line.

• After completing the repair or relocation work, check that the ground 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 must the power cable be extended. Connection trouble in the places where the cable 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.

• Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity overflow may occur on the terminal block and may result in fire.

• When carrying out electric connection, use the wire specified in the Installation Manual and connect and fix the wires securely to prevent them applying external force to the terminals. Improper connection or fixing may result in fire.

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 first conducting these checks.

• When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of burning, abnormal sounds are heard, 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 failure.

• After the work has finished, be sure to use an insulation tester set (500 V Megger) to check the resistance is 2 M 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 you have discovered that 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.

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

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 suck ed in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in rupture, injury or other trouble.

• Never recover the refrigerant into the outdoor unit. Be sure to use a refrigerant recovery machine to recover the refrigerant when moving or repairing. It is impossible to recover the refrigerant into the outdoor unit. Refrigerant recovery into the outdoor unit may result in serious accidents such as explosion of the unit, injury or other accidents.

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

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, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.

• 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 type can be used) must be used for the power supply line of this conditioner.

3-EN 4-EN

–2–

Outdoor Unit

NOTE

Installation Manual

–3–

Outdoor Unit

Installation Manual

2 Accessory parts

Part name Q’ty Shape Usage

Owner’s Manual 1 Hand this directly to the customer.

Installation Manual 1 Hand this directly to the customer.

Drain nipple 1

Waterproof rubber cap 1

Protective bush 1 For protecting wires (pipe cover)

Guard material for passage part

Joint pipe (Ø19.1 - Ø22.2) 1

Joint socket (Ø15.9 - Ø22.2) 1

• Before installing the unit, check that the unit has the correct model name to prevent the wrong unit from being installed in the wrong place.

• Before proceeding to weld the refrigerant pipe, be sure to pass nitrogen through the pipe.

• Before installing the indoor units, read the instructions in the installation manual provided with the indoor units.

• Before installing a branch pipe, read the instructions in the installation manual provided with the branch pipe kit.

1 For protecting passage part (pipe cover)

For the pipe inside the outdoor unit (MCY-MAP0804HT8 / HT7 only)

3 Installation of new refrigerant air

conditioner

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

• R410A refrigerant is vulnerable to impurities such as water, oxidizing membranes, or oils because the pressure of R410A refrigerant is higher than that of the former refrigerant by approximately 1.6 times. As well as the adoption of the new refrigerant, the refrigerating oil has been also changed. Therefore, pay attention so that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle of the new refrigerant air conditioner during installation.

• To prevent mixing of refrigerant or refrigerating oil, the size of the charge port of the main unit or connecting section of the installation tool differs to that of an air conditioner for the former refrigerant. Accordingly, exclusive tools are required for the new refrigerant (R410A) as shown below.

• For connecting pipes, use new and clean piping materials so that water or dust does not enter.

 Required tools and cautions on handling

It is necessary to prepare the tools and parts for installation as described below. The tools and parts which will be newly prepared in the following items should be restricted to exclusive use.

Explanation of symbols

: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.) : Former tool is available.

Gauge manifold Charging hose Exclusive to R410A Charging cylinder Charging refrigerant Unusable (Use the Refrigerant charging balance.) Gas leak detector Checking gas leak Exclusive to R410A

Vacuum pump Vacuum drying

Vacuum pump with counterflow Vacuum drying R22 (Existing article) Flare tool Flare processing of pipes Usable by adjusting size Bender Bending processing of pipes R22 (Existing article) Refrigerant recovery device Recovering refrigerant Exclusive to R410A Torque wrench Tightening flare nut Exclusive to Ø12.7 mm and Ø15.9 mm Pipe cutter Cutting pipes R22 (Existing article)

Refrigerant canister Charging refrigerant

Welding machine / Nitrogen gas cylinder

Refrigerant charging balance Charging refrigerant R22 (Existing article)

Used tools Usage Proper use of tools / parts

Vacuuming, charging refrigerant and operation check

Welding of pipes R22 (Existing article)

Exclusive to R410A

Usable if a counter-flow preventive adapter is attached

Exclusive to R410A Enter the refrigerate name for identification

5-EN 6-EN

Outdoor Unit

WARNING

CAUTION

WARNING

CAUTION

Installation Manual

Outdoor Unit

Installation Manual

4 Installation conditions

 Before installation

Be sure to prepare to the following items before installation.

◆ Airtight test

1 Before starting an airtight test, further tighten the spindle valves on the gas and liquid sides. 2 Pressurize the pipe with nitrogen gas charged from the service port to the design pressure to

conduct an airtight test.

3 After the airtight test is completed, evacuate the nitrogen gas.

◆ Air purge

• To purge air, use a vacuum pump.

• Do not use refrigerant charged in the outdoor unit to purge air. (The air purge refrigerant is not contained in the outdoor unit.)

◆ Electrical wiring

Be sure to fix the power wires, system interconnecting wires and remote controller wires with clamps so that they do not come into contact with the cabinet, etc.

◆ Earthing

Make sure that proper earthing is provided.

Improper earthing may cause an electric shock. For details on how to check earthing, contact the dealer who installed the air conditioner or a professional installation company.

 Installation location

Install the outdoor unit properly in a location that is durable enough to support the weight of the outdoor unit.

Insufficient durability may cause the outdoor unit to fall, which may result in injury. This outdoor unit has a weight of about 125 kg. Pay special attention when installing the unit onto a wall surface.

Do not install the outdoor unit in a location that is subject to combustible gas leaks.

Accumulation of combustible gas around the outdoor unit may cause a fire.

Install the outdoor unit in a location that meets the following conditions after the customer’s consent is obtained.

• A well-ventilated location free from obstacles near the air intake and air discharge

• A location that is not exposed to rain or direct sunlight

• A location that does not increase the operating noise or vibration of the outdoor unit

• A location that does not produce any drainage problems from discharged water

Do not install the outdoor unit in the following locations.

• A location with a saline atmosphere (coastal area) or one that is full of sulfide gas (hot-spring area) (Special maintenance is required.)

• A location subject to oil, vapor, oily smoke, or corrosive gases

• A location in which organic solvent is used

• A location where high-frequency equipment (including inverter equipment, private power generator, medical equipment, and communication equipment) is used (Installation in such a location may cause malfunction of the air conditioner, abnormal control or problems due to noise from such equipment.)

• A location in which the discharged air of the outdoor unit blows against the window of a neighboring house

• A location where the operating noise of the outdoor unit is transmitted

• When the outdoor unit is installed in an elevated position, be sure to secure its fixing leg.

• A location in which drain water poses any problems.

• Proper earthing can prevent charging of electricity on the outdoor unit surface due to the presence of a high frequency in the frequency converter (inverter) of the outdoor unit, as well as prevent electric shock. If the outdoor unit is not properly earthed, you may be exposed to an electric shock.

• Be sure to connect the earth wire (grounding work). Incomplete earthing can cause an electric shock. Do not connect earth wires to gas pipes, water pipes, lightning rods or earth wires for telephone wires.

◆ Test run

Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor.

Incorrect installation work may result in a malfunction or complaints from customers.

7-EN 8-EN

–4–

Outdoor Unit

CAUTION

500 mm

Strong wind

Snow shield

150 or more

The height of the obstacle should be lower than the height of the outdoor unit.

200 or more

150 or more

250 or more

The height of the obstacle should be lower than the height of the outdoor unit.

150 or more

250 or more

200 or more

500 or more

150 or

500 or more

1,000 or

1,000 or more

800 or more

Installation Manual

1. Install the outdoor unit in a location where the discharge air is not blocked.

2. When an outdoor unit is installed in a location that is always exposed to strong winds like a coast or on the high

stories of a building, secure normal fan operation by using a duct or wind shield.

3. When installing the outdoor unit in a location that is constantly exposed to strong winds such as on the upper

stairs or rooftop of a building, apply the wind-proofing measures referred to in the following examples.

1) Install the unit so that its discharge port faces the wall of the building. Keep a distance 500 mm or more between the unit and wall surface.

2) Consider the wind direction during the operational season of the air conditioner, and install the unit so that the discharge port is set at a right angle relative to the wind direction.

–5–

Outdoor Unit

Installation Manual

 Necessary space for installation

Obstacle at rear side

▼ Upper side is free

1. Single unit installation 2. Obstacles on both right and left sides

3. Serial installation of two or more units

▼ Obstacle also above unit

(Unit: mm)

When installing the unit in an area where snowfalls may be heavy, take steps to prevent the unit from being adversely affected by the fallen or accumulated snow.

• Either make the foundation higher or install a stand (which is high enough to ensure that the unit will be

above the fallen or accumulated snow) and place the unit on it.

• Attach a snow shield (locally procured).

Obstacle in front

▼ Above unit is free

1. Single unit installation 2. Serial installation of two or more units

▼ Obstacle also at the above unit

9-EN 10-EN

Outdoor Unit

150 or

1,000

or more

250 or more

1,000

or more

200 or

1,000 or more

300 or more

1,500 or more

2,000 or more

200 or more

Drain hole

Drain nipple mounting hole

Knockout hole

150

600

430

400

365

150

GOOD

Fixing leg

Foundation

GOOD

NO GOOD

Foundation

If only the end of the

fixing leg is supported,

it may deform.

Do not support the outdoor unit only with the fixing leg.

Bottom plate of outdoor unit

Support the bottom surface of the fixing leg that is in contact with and underneath the bottom plate of the outdoor unit.

Absorb vibration with vibration-proof rubber pads

15 or less

Installation Manual

Outdoor Unit

Installation Manual

Obstacles in both front and rear of unit

Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit, should be lower than the height of the outdoor unit.

▼ Standard installation

1. Single unit installation 2. Serial installation of two or more units

Serial installation in front and rear

Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit should be lower than the height of the outdoor unit.

▼ Standard installation

 Installation of outdoor unit

• Before installation, check the strength and horizontalness of the base so that abnormal sounds do not emanate.

• According to the following base diagram, fix the base firmly with the anchor bolts. (Anchor bolt, nut: M10 x 4 pairs)

• As shown in the figure below, install vibration-proof rubber pads to directly support the bottom surface of the fixing leg.

* When installing the foundation for an outdoor unit with downward piping, consider the piping work.

Set the out margin of the anchor bolt to 15 mm or less.

11-EN 12-EN

–6–

Outdoor Unit

Waterproof rubber cap

Drain nipple

Knockout hole

Waterproof rubber cap

Drain nipple

Rear

Side

Bottom

Pipe cover

Front

Installation Manual

–7–

Outdoor Unit

Installation Manual

• When water is to be drained through the drain hose, attach the following drain nipple and waterproof rubber cap, and use the drain hose (Inner diam: 16 mm) sold on the market. Also seal the knockout hole and screws securely with silicone material, etc., to prevent water from leaking. Some conditions may cause dewing or dripping of water.

• When collectively draining discharged water completely, use a drain pan.

• Please pay attention to the drain in region with snowfall and cold temperature, as it may be frozen and cause drainage problems. Punch the knockout holes on the bottom plate to improve drainability. Use a screwdriver and take off the knockout part outward.

 For reference

If a heating operation is to be continuously performed for a long time under the condition that the outdoor temperature is 0 °C or lower, draining defrosted water may be difficult due to the bottom plate freezing, resulting in trouble with the cabinet or fan. It is recommended to procure an anti-freeze heater locally in order to safely install the air conditioner. For details, contact the dealer.

5 Refrigerant piping

 Knockout of pipe cover

◆ Knockout procedure

• The indoor / outdoor connecting pipes can be connected in 4 directions. Take off the knockout of the pipe cover or bottom plate where the pipes or wires will pass through.

• Without detaching the pipe cover, tap on the knockout section a few times with the shank of a screwdriver. A knockout hole can easily be punched.

• As shown in the figure below, it is easier to punch out the knockout hole when the pipe cover is left in place rather than when the cover is removed from the unit. In knocking out the hole, the knockout section can easily be removed by hand once the bottom of the three locations where the section is joined along the guide lines is broken using a screwdriver.

• After punching out the knockout hole, remove burrs from the hole, and install the protective bush and guard material around the passage hole provided as accessories in order to protect the wires and pipes. Also be sure to attach the pipe covers after connecting the pipes. The pipe covers can be easily attached by cutting off the slits at the lower part of the covers.

* Be sure to wear heavy work gloves while working.

13-EN 14-EN

Outdoor Unit

REQUIREMENT

CAUTION

Obliquity

Roughness

Warp

90°

REQUIREMENT

Joint pipe (L-shape, supplied)

Solder

Joint socket (straight, supplied)

Branch pipe

Ø22.2 pipe (locally procured)

Flare connection

Gas side ball valve Ø19.1

Installation Manual

Outdoor Unit

Installation Manual

 Optional installation parts (locally procured)

Parts name Q’ty

Refrigerant piping

Liquid side: Ø9.5 mm Gas side: Ø19.1 mm and Ø22.2 mm

Pipe insulating material

(polyethylene foam, 10 mm thick)

C Putty, PVC tape One each

Follow the instructions in the installation manual provided with the branch pipe kit and the instructions in the installation manual of the indoor unit to connect the refrigerant pipe between the branch pipe and indoor unit.

One each

 Connecting the pipe at the gas side (MCY-MAP0804HT8 / HT7

only)

• Connecting the main pipe (Ø19.1) directly to the gas valve (Ø19.1) may lower the performance.

• To connect the main pipe (Ø22.2) to the gas valve (Ø19.1), use the joint pipe (Ø19.1 - Ø22.2) and joint socket (Ø15.9

- Ø22.2) that come with the outdoor unit.

• Before welding the refrigerant pipe, be sure to pass nitrogen through the pipe to prevent oxidation inside the pipes. Failure to observe this precaution may cause the refrigerant pipe to become clogged due to oxidation scale.

 Refrigerant piping connection

Take note of these 4 important points below for piping work

1. Keep dust and moisture away from inside the connecting pipes.

2. Tightly connect the connection between pipes and the unit.

3. Evacuate the air in the connecting pipes using a VACUUM PUMP.

4. Check for gas leaks at connection points.

Flaring

1. Cut the pipe with a pipe cutter.

◆ Connection procedure

To connect at the front, sides, or back

2. Remove the burr inside of the pipe. When removing the burr, be careful so that chips do not fall into the pipe.

3. Remove the flare nuts attached to the outdoor / indoor unit, then insert them into each of the pipes.

4. Flare the pipes. See the following table for the projection margin (A) and flaring size (B).

1 Braze the supplied joint pipe to the main pipe (Ø22.2). 2 Remove the nut from the valve at the gas side, insert the nut into the supplied joint pipe, then flare

the tip of the pipe.

3 Tighten the supplied joint pipe to the valve at the gas side using a nut by the specified torque in

the same direction as removing the outdoor unit pipe.

4 Connect and braze the supplied joint socket between the main pipe (Ø22.2) and branch pipe

(Ø15.9).

To connect downward

15-EN 16-EN

Pipe A B Flare Nut

Outside

diameter

* In case of flaring for R410A with the conventional flare tool, pull the tool out approx. 0.5 mm more than that for

R22 to adjust it to the specified flare size. The copper pipe gauge is useful for adjusting the projection margin size.

Thickness

mm mm mm mm mm mm N•m kgf•m

9.5 0.8 0 to 0.5 1.0 to 1.5 13.2 22 33 to 42 3.3 to 4.2

19.1 1.2 0 to 0.5 1.0 to 1.5 24.0 36 100 to 120 10.0 to 12.0

Rigid

(clutch type)

R410A tool

Imperial

(wing nut type)

R410A tool

Width across

flat

Tighten torque

1 Cut the supplied joint pipe, then braze the main pipe (Ø22.2). 2 Remove the nut from the valve at the gas side, insert the nut into the supplied joint pipe, then flare

the tip of the pipe.

3 Tighten the supplied joint pipe to the valve at the gas side using a nut by the specified torque. 4 Connect and braze the supplied joint socket between the main pipe (Ø22.2) and branch pipe

(Ø15.9).

–8–

Outdoor Unit

CAUTION

Internally threaded side

Externally threaded side

Flare nut

Tighten with torque wrench.

Fix with wrench.

Half union or packed valve

Piping valve

Cap

Cover

Flare nut

Loosened

Valve at gas side

Tightened

Cap

Cover

NO GOOD

ØF

+0.04

-0.02

+0.04

-0.02

+0.04

-0.02

+0.04

-0.02

+0.03

-0.03

+0.03

-0.03

Installation Manual

–9–

Outdoor Unit

Installation Manual

 Tightening of connecting part

1. Align the centers of the connecting pipes and fully tighten the flare nut with your fingers. Then fix the nut with a wrench as shown in the figure and tighten it with a torque wrench.

2. As shown in the figure, be sure to use two wrenches to loosen or tighten the flare nut of the valve on the gas side. If you use a single wrench, the flare nut cannot be tightened to the required tightening torque. On the other hand, use a single wrench to loosen or tighten the flare nut of the valve on the liquid side.

1.Do not put the wrench on the cap or cover. The valve may break.

2.If applying excessive torque, the nut may break according to some installation conditions.

Coupling size of brazed pipe

Connected section

External size Internal size

ØC

Connected section

Standard outer dia.

of connected

copper pipe

6.35 6.35 (±0.03) 6.45 ( ) 7 6 0.06 or less 0.50

9.52 9.52 (±0.03) 9.62 ( ) 8 7 0.08 or less 0.60

12.70 12.70 (±0.03) 12.81 ( ) 9 8 0.10 or less 0.70

15.88 15.88 (±0.03) 16.00 ( ) 9 8 0.13 or less 0.80

19.05 19.05 (±0.03) 19.19 ( ) 11 10 0.15 or less 0.80

22.22 22.22 (±0.03) 22.36 ( ) 11 10 0.16 or less 0.82

External size Internal size

Standard outer dia.

(Allowable difference)

Min. depth of

insertion

CFKG

Oval value

(Unit: mm)

Min. thickness

of coupling

• After the installation work, be sure to check for gas leaks of the pipe connections with nitrogen.

• Pressure of R410A is higher than that of R22 (Approx. 1.6 times). Therefore, using a torque wrench, tighten the flare pipe connecting sections that connect the indoor / outdoor units at the specified tightening torque. Incomplete connections may cause not only a gas leak, but also trouble with the refrigeration cycle.

Do not apply refrigerant oil to the flared surface.

17-EN 18-EN

Outdoor Unit

Main pipe

Gas pipe

1st branching section

Outdoor unit

(5)

(2)

(4)

(1)

(3)

Liquid pipe

Y-shaped branching joint

(4)

Branching pipe

Branching header

(3)

Branching pipe

(2)

(4)

(3)

Indoor unit

* OD 19.1 can be used, but may lower the performance.

Out door unit capacity type Gas pipe Liquid pipe

0604 type OD 19.1 OD 9.5 0804 type OD 22.2* OD 9.5

Total capacity codes of indoor

units at downstream side

Gas pipe

Liquid

pipe

Equivalent to HP

Equivalent to

capacity

Below 2.4 Below 6.6 12.7 9.5

2.4 to below 6.4 6.6 to below 18.0 15.9 9.5

6.4 or more 18.0 or more 19.1 9.5

Capacity rank Gas pipe

Liquid

pipe

007 to 012 type 9.5 6.4 015 to 018 type 12.7 6.4 024 to 056 type 15.9 9.5

Installation Manual

Outdoor Unit

Installation Manual

 Selection of pipe materials and size

 Selection of refrigerant piping

◆ Selection of pipe material

Material: Phosphorus deoxidation seam-less pipe

◆ Capacity code of indoor and outdoor units

• For the indoor unit, the capacity code is decided at each capacity rank.

• The capacity codes of the outdoor units are decided at each capacity rank. The maximum No. of connectable indoor unit and the total value of capacity codes of the indoor units are also decided.

Minimum wall thickness for R410A application

Soft Harf Hard or Hard OD (Inch) OD (mm) Minimum wall thickness (mm)

OK OK 1/4” 6.35 0.80 OK OK 3/8” 9.52 0.80 OK OK 1/2” 12.70 0.80

OK OK 5/8” 15.88 1.00 NG * OK 3/4” 19.05 1.00 NG * OK 7/8” 22.2 1.00

Table1

Capacity code

Equivalent to

capacity

Indoor unit capacity

type

Equivalent to HP

007 type 0.8 2.2 009 type 1 2.8 012 type 1.25 3.6 015 type 1.7 4.5 018 type 2 5.6 024 type 2.5 7.1 027 type 3 8 030 type 3.2 9 036 type 4 11.2 048 type 5 14 056 type 6 16

Table2

Outdoor unit capacity

type

Capacity code

Equivalent to HP Min. (HP) Max. (HP)

No. of connectable

indoor units

0604 type 6 2 to 8 4.8 7.8 0804 type 8 2 to 8 6.4 10.4

19-EN 20-EN

Total capacity code of connectable indoor

* If the pipe size is

Ø19.0 or more, use a suitable material.

units

–10–

No.

Piping parts Name Selection of pipe size Remarks

Connecting pipe size of outdoor unit

Outdoor unit



(1)

1st branching section

Branching section



(2)

Branching section



(3)

Indoor unit

Main pipe

Branching pipe

Indoor unit connecting pipe

Pipe size between branching sections

Connecting pipe size of indoor unit

Same as connecting pipe size of the outdoor unit.

Pipe size differs based on the total capacity code value of indoor units at the downstream side. If the total value exceeds the capacity code of the outdoor unit, apply the capacity code of the outdoor unit. (See Table 1 and 2.)

Outdoor Unit

Model name

Y-shape branching joint RBM-BY55E

Model name

Branching header*1

For 4 branches RBM-HY1043E For 8 branches RBM-HY1083E

Indoor unit

Main pipe

Gas pipe

1st branching section

Outdoor unit

(5)

(2)

(4)

(1)

(3)

Liquid pipe

Y-shaped branching joint

(4)

Branching pipe

Branching header

(6)

(3)

Branching pipe

(2)

(4)

(3)

(6)

(3)

(6)

(3)

(6)

Indoor unit

PMV Kit

* OD 19.1 can be used, but may lower the performance.

Out door unit capacity type Gas pipe Liquid pipe

0604 type OD 19.1 OD 9.5 0804 type OD 22.2* OD 9.5

Total capacity codes of indoor

units at downstream side

Gas pipe

Liquid

pipe

Equivalent to HP

Equivalent to

capacity

Below 2.4 Below 6.6 12.7 9.5

2.4 to below 6.4 6.6 to below 18.0 15.9 9.5

6.4 or more 18.0 or more 19.1 9.5

Capacity rank Gas pipe

Liquid

pipe

007 to 012 type 9.5 6.4 015 to 018 type 12.7 6.4 024 to 056 type 15.9 9.5

Installation Manual

–11–

Outdoor Unit

Installation Manual

No.

Piping parts Name Selection of pipe size

Selection of branching section (Y-shaped branching joint)

Branching section

(4)

Branching section Branching header

(5)

Y-shaped branching joint

Selection of branching section (Branching header)

*1: Up to a total of 6.0 maximum equivalent to HP capacity codes is connectable to one line

after branching of header.

 Selection of refrigerant piping for quiet place (with PMV Kit)

No.

Piping parts Name Selection of pipe size Remarks

Connecting pipe size of outdoor unit

(1)

Outdoor unit



1st branching section

Main pipe

Same as connecting pipe size of the outdoor unit.

Pipe size between branching sections

21-EN 22-EN

Branching section



(2)

Branching section



(3)

Indoor unit

Branching pipe

Indoor unit connecting pipe

Connecting pipe size of indoor unit

Outdoor Unit

Model name

Y-shape branching joint RBM-BY55E

Model name

Branching header*1

For 4 branches RBM-HY1043E For 8 branches RBM-HY1083E

Indoor unit capacity type Model name

007, 009, 012 type RBM-PMV0362E 015, 018, 024 type RBM-PMV0902E

abcd

Branching pipe

Height difference between indoor and outdoor units H1

1st branching section

Outdoor unit

Branching

header

Main pipe L1

Y-shaped

branch joint

Branching pipe L2

Equivalent length corresponded to farthest piping L

Indoor unit

Height difference between indoor units H2

Equivalent length corresponded to farthest piping after 1st branching Li

Installation Manual

Outdoor Unit

Installation Manual

No.

Piping parts Name Selection of pipe size

Selection of branching section (Y-shaped branching joint)

Branching section

(4)

Branching section Branching header

(5)

PMV Kit PMV Kit

(6)

Y-shaped branching joint

Selection of branching section (Branching header)

*1: Up to a total of 6.0 maximum equivalent to HP capacity codes is connectable to one line

after branching of header.

Selection of PMV Kit

◆ Allowable length / height difference of refrigerant piping

Total extension of pipe (liquid pipe, real length) 100 m L1 + L2 + L3 + L4 + a + b + c + d + e + f + g

Farthest piping length L

Piping Length

Height Difference

*1: Furthest indoor unit from 1st branch to be named “A”.

(*1)

Max. real length of main pipe 30 m L1 Max. real length of furthest piping from 1st branching Li

(*1) Max. real length of indoor unit connecting pipe 10 m a, b, c, d, e, f, g

Height between indoor and outdoor units H1

Height between indoor units H2 10 m ―

Real length 50 m Equivalent length 60 m

Upper outdoor unit 15 m ― Lower outdoor unit 15 m ―

Allowable

value

L1 + L3 + L4 + g

20 m L3 + L4 + g

Pipes

23-EN 24-EN

–12–

Outdoor Unit

Branching pipe

Height difference between indoor and outdoor units H1

1st branching section

Outdoor unit

Branching

header

Main pipe L1

Y-shape

branch joint

Branching pipe L2

Equivalent length corresponded to farthest piping L

Indoor unit

Height difference between indoor unit and PMV Kit H2 * *Between

highest unit and lower units.

Equivalent length corresponded to farthest piping after 1st branching Li

PMV Kit

Example)

NOTE

PMV Kit

Indoor unit

NO GOOD

PMV Kit

Indoor unit

Installation Manual

◆ Allowable length / height difference of refrigerant piping for quiet places (with PMV Kit)

hi jk

–13–

Outdoor Unit

Installation Manual

Do not connect two or more indoor units to one PMV Kit. Arrange one indoor unit and one PMV Kit set to 1 by 1.

Total extension of pipe (Liquid pipe, real length)

Furthest piping length L (*1)

Piping Length

Height Difference

*1: Furthest indoor unit from 1st branch to be named “A”.

25-EN 26-EN

Max. real length of main pipe 30 m L1 Max. real length of furthest piping from

1st branching Li (*1) Max. real length of indoor unit

connecting pipe Real length between PMV KIT and

indoor unit

Height between indoor and outdoor units H1

Height between indoor unit and PMV kit H2

Real length 50 m Equivalent length 60 m

Upper outdoor unit

Lower outdoor unit

Allowable

value

100 m

2 m or more

Below 10 m

+ a + b + c + d + e + f + g+ h + i + j + k + l + m + n

15 m L3 + L4 + g + n

10 m a + h, b + i, c + j, d + k, e + l, f + m. g + n

15 m ―

10 m ―

Pipes

L1 + L2 + L3 + L4

L1 + L3 + L4 + g + n

h, i, j, k, l, m, n

Outdoor Unit

REQUIREMENT

NOTE

Main pipe

Brazed

Fully closed

Ball valve fully closed (gas side)

Outdoor unit

Service port

Packed valve fully closed (liquid side)

Ø6.4

Copper pipe

Ø6.4 Copper pipe

Nitrogen gas

Reducing valve

Gauge manifold

High pressure guage

Low pressure guage

Connected to indoor unit

REQUIREMENT

Installation Manual

 Airtight test

Before starting an airtight test, further tighten the spindle valves on the gas side and liquid side. Pressurize the pipe with nitrogen gas charged from the service port to the design pressure to conduct the airtight test. After the airtight test is completed, evacuate the nitrogen gas.

• Apply pressure from the service ports of the packed valves (or ball valves) at liquid side, discharge gas side and

suction gas side.

• An air tight test can be only performed to the service ports at liquid side, discharge gas side, and suction gas

side of the outdoor unit.

• Close fully valves at liquid side, discharge gas side, and suction gas side. As there is possibility that nitrogen gas

enters in the refrigerant cycle, re-tighten the valve rods before applying pressure. (Re-tightening of the valve rods are unnecessary for valves at discharge gas side because they are ball valves.)

• For each refrigerant line, apply pressure gradually with steps at liquid side, discharge gas side, and suction gas

side.

Apply pressure to suction gas side, discharge gas side, and liquid side.

Do not use “Oxygen”, “Flammable gas” and “Noxious gas” in an airtight test.

Outdoor Unit

When pressure decrease is detected in steps 1-3, check the leakage at the connecting points. Check the leakage using a foaming agent or other measures and seal the leak with re-brazing, flare retightening or other methods. After sealing, execute an airtight test again.

Installation Manual

To detect a gross leakage

1. Apply pressure 0.3 MPa (3.0 kg / cm

2. Apply pressure 1.5 MPa (15 kg / cm

To detect a slow leakage

3. Apply pressure 3.73 MPa (38 kg / cm

G) for 3 minutes or more.

G) for approx. 24 hours.

• Check pressure down.

No pressure down: Accepted Pressure down: Check the leaked position.

However, if the environmental temperature changes from the moment of applying pressure to 24 hours after that, the pressure will change by about 0.01 MPa (0.1 kg / cm²G) per 1 °C. Consider the pressure change when checking the test result.

27-EN 28-EN

–14–

Outdoor Unit

NOTE

Main pipe

Brazed

Fully closed

Ball valve fully closed (gas side)

Outdoor unit

Service port

Packed valve fully closed (liquid side)

Gauge manifold

High pressure guage

Low pressure guage

Connected to indoor unit

Vacuum pump

NOTE

Installation Manual

–15–

Outdoor Unit

Installation Manual

 Air purge

For the air purge at installation time (Discharge of air in connecting pipes), use “Vacuum pump method” from viewpoint of the protection of the earths environment.

• For protection of the earths environment, do not discharge the refrigerant gas in the air.

• Eliminate the remaining air (nitrogen gas, etc.) in the unit by using a vacuum pump. If gas remains, performance and reliability of the unit may be reduced.

After the airtight test, discharge nitrogen gas. Then connect the gauge manifold to the service ports at suction gas side, discharge gas side and liquid side, and connect the vacuum pump as shown in the following figure. Perform vacuuming for suction gas side, discharge gas side and liquid side.

• Perform vacuuming from both suction gas side, discharge gas side and liquid side.

• Perform vacuuming from both liquid and gas sides.

• Use a vacuum pump with counter-flow preventive function so that oil in the pump does not back up in the pipe

of the air conditioner when the pump has been stopped. (If oil in the vacuum pump enters in to the air conditioner with R410A refrigerant, an error may occur in the refrigeration cycle.)

• Use a vacuum pump that has a high vacuum (below -755 mmHg) and a large exhaust gas amount (over 40 L /

minute).

• Perform vacuuming for 2 or 3 hours though time differs due to pipe length.

In this time, check all valves at liquid and gas sides are fully closed.

• If vacuuming valve amount is not decreased to below -755 mmHg even after vacuuming for 2 hours or more,

continue vacuuming for 1 hour or more. If -755 mmHg or less cannot be obtained by 3 hours or more vacuuming, detect and repair the leak.

• When the vacuuming valve has reached -755 mmHg or less after vacuuming for 2 hours or more, close valves

VL and VH on the gauge manifold fully. Stop the vacuum pump, leave it as it is for 1 hour and then check the vacuum does not change. If it does change then there may be a leak within the system.

• After the above procedure for vacuuming has finished, exchange the vacuum pump with a refrigerant cylinder

and advance to the additional charging of refrigerant.

 Adding refrigerant

After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of refrigerant.

Calculation of additional refrigerant charge amount

Default refrigerant amount does not include the refrigerant for pipes at the local site. For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.

Do not degas the refrigerant from the air conditioner when the result of additional refrigerant charge amount calculation is negative valve.

Outdoor unit type MAP060 MAP080

Charging amount (kg) 3.9

Additional refrigerant

charge amount at local

site

Real length of liquid

pipe

Additional refrigerant

charge amount per 1 m

liquid pipe

(Table 1)

Table 1

Liquid pipe dia. (mm) 6.4 9.5 Additional refrigerant amount / 1 m

liquid pipe (kg / m)

0.025 0.055

Table 2

Capacity rank 007 009 012 015 018 024 027 030 036 048 056

Equivalent to HP 0.8 1.0 1.25 1.7 2.0 2.5 3.0 3.2 4.0 5.0 6.0 MMU-AP****H - 0.4 0.4 0.8 0.8 0.8 0.8 0.8 1.2 1.2 1.2 MMU-AP****MH(-E) 0.4 0.4 0.4 0.6 0.6 - - - - - -

MMU-AP****YH(-E) / SH(-E) MMD-AP****BH(-E) 0.3 0.3 0.3 0.5 0.5 0.8 0.8 0.8 1.1 1.1 1.1 MMD-AP****SPH(-E) 0.3 0.3 0.3 0.5 0.5 - - - - - MMD-AP****H(-E) - - - - 0.8 1.0 1.0 - 1.0 1.3 -

MMK-AP****3H(-T) 0.5 0.5 0.5 0.7 0.7 0.7 - - - - MMK-AP****4MH-E / 2H0.30.30.3-------MMF-AP****H(-E) - - - 0.7 0.7 1.0 1.0 - 1.3 1.3 1.3 MML-AP****H(-E) 0.5 0.5 0.5 0.5 0.8 0.8 - - - - MML-AP****BH(-E) 0.3 0.3 0.3 0.5 0.5 0.7 - - - - MML-AP****NH-E 0.5 0.5 0.5 0.5 0.5 - - - - - -

0.40.40.40.50.50.6 - - - - -

Indoor unit model name

4-way cassette

2-way cassette MMU-AP****WH 0.4 0.4 0.4 0.5 0.7 0.7 0.7 0.7 1.1 1.1 1.1 1-way cassette

Duct

Ceiling MMC-AP****H(-E) - - - 0.5 0.5 0.7 0.7 - 1.1 1.1 -

High wall

Floor standing

Table 3

Outdoor unit type MAP 060 MAP 080 Compensation by outdoor HP (kg) - 1.6 - 1.0

Corrective amount of refrigerant depending

on the indoor units

(Table 2)

Compensation by

outdoor HP

(Table 3)

(kg)

29-EN 30-EN

Outdoor Unit

ABCD

Valve unit

Flare nut

Charge port

Turn it counterclockwise by 90° until it hits the stopper with a slotted screwdriver. (full open)

Handle position

Stopper pin

Main stopper

Movable part of valve (stem)

Opened fully

Closed completely

Installation Manual

Outdoor Unit

Installation Manual

Example: (0804 type)

L1 Ø9.5: 10 m L2 Ø9.5: 10 m L3 Ø9.5: 5 m L4 Ø9.5: 3 m L5 Ø6.4: 3 m L6 Ø6.4: 4 m L7 Ø6.4: 5 m

A MMU-AP0272H B MMU-AP0182H C MMU-AP0184MH-E D

MMU-AP0094SPH-E

Additional charge amount R (kg)

= (Lx  0.025 kg/m) + (Ly  0.055 kg/m) + (a + b + c + d) + (- 1.0 kg) = (12 m  0.025 kg/m) + (28 m  0.055 kg/m) + (0.8 kg + 0.8 kg + 0.6 kg + 0.3 kg) + (- 1.0 kg)

Lx: Real total length of liquid pipe Ø6.4 (m) Ly: Real total length of liquid pipe Ø9.5 (m)

a: Corrective amount of refrigerant depending on the unit A (kg) b: Corrective amount of refrigerant depending on the unit B (kg) c: Corrective amount of refrigerant depending on the unit C (kg) d: Corrective amount of refrigerant depending on the unit D (kg)

Charging of refrigerant

• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the liquid side.

• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the gas side. In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.

• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

 How to open the valve

Open or close the valve.

▼ Liquid side

Open the valve with a 4 mm hexagon wrench.

▼ Gas side

• While the valve is fully opened, after the screwdriver has reached the stopper, do not apply torque exceeding 5 N•m. Applying excessive torque may damage the valve.

▼ Valve handling precautions

• Open the valve stem until it strikes the stopper. It is unnecessary to apply further force.

• Securely tighten the cap with a torque wrench.

▼ Cap tightening torque

Valve size

Ø9.5 mm

Ø19.1 mm

Charge port

33 to 42 N•m (3.3 to 4.2 kgf•m)

20 to 25 N•m (2.0 to 2.5 kgf•m)

14 to 18 N•m (1.4 to 1.8 kgf•m)

31-EN 32-EN

–16–

Outdoor Unit

WARNING

CAUTION

Circuit breaker

(earth leakage breaker)

Main switch (fuse)

U1 U2 U3 U4

U1 U2

AB U2

U1U2U1

BU2U1 A B

AB AB AB

Central controller

Outdoor unit

Communication wiring between indoor and outdoor units (shield wire)

Communication wiring between indoor units (shield wire)

Indoor unit

Remote controller

(group control)

Installation Manual

–17–

Outdoor Unit

Installation Manual

6 Electric wiring

The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.

• Perform wiring of power supply complying with the rules and regulations of the local electric company.

• Do not connect 380 V power to the terminal blocks for control cables (U1, U2, U3, U4); otherwise, the unit may break down.

• Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the coating of cables may melt and cause an accident.

• After connecting wires to the terminal block, take off the traps and fix the wires with cord clamps.

• Follow the same structure for both the control wiring and refrigerate piping.

• Do not conduct power to indoor units until vacuuming of the refrigerant pipes has finished.

• For the wiring of power to indoor units and that between indoor and outdoor units, follow the instructions in the installation manual of each indoor unit.

◆ Power wiring selection

Standard model

Model

MCY-MAP0604HT8 MCY-MAP0804HT8

MCY-MAP0604HT7 MCY-MAP0804HT7

Power Supply

MOCP: Maximum Overcurrent Protection (Amps)

Phase and frequency Nominal Voltage

3N~ 50 Hz 380-415 V 16.5 25

3N~ 60 Hz 380 V 16.5 25

MCA: Maximum Circuit Amps

MCA

(A)

MOCP

(A)

 Specifications for communication wiring

◆ Design of communication wiring

Summary of communication wiring

Communication wiring and central control wiring use 2-core non-polarity wires. Use 2-core shield wires to prevent noise trouble. In this case, for the system grounding, close (connect) the end of shield wires, and isolate the end of terminal. Use 2-core non-polarity wire for remote controller. (A, B terminals) Use 2-core non-polarity wire for wiring of group control. (A, B terminals)

33-EN 34-EN

Outdoor Unit

Header

unit

Follower unit

S-MMS

(Super modular multi system)

Central

controller

Outdoor unit

Indoor unit

Table-1

Table-2

Table-1

Remote controller

Table-3

MiNi-SMMS

NOTE

AB AB AB AB AB AB

(A.B)

Remote controller

Indoor unit No.1

No.2

No.3

No.4

No.7

No.8

Piping / wiring panel

Knockout for the power wire

Knockout for the communication wires and refrigerant piping

Installation Manual

Outdoor Unit

Installation Manual

Keep the rule of below tables about size and length of communication wiring.

U1U3U2

U3 U4

U1 U2

A B

U1 U2

U3 U4

A B

L2 L3

U1 U2

A B

U1 U2

A B

U1 U2

A B

U1 U2

A B

U1 U2

U3 U4

A B

U5 U6

U1 U2

A B

U3 U4

U5 U6

U1 U2

Table-1 Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)

Wiring 2-core, non-polarity Type Shield wire

: Up to 1000 m

Size / Length *1

(*1): Total of control wiring length for all refrigerant circuits ( L1 + L2 + L3 + L4 )

1.25 mm

2.0 mm

: Up to 2000 m

Table-2 Control wiring between outdoor units (L5) (S-MMS-i)

Wiring 2-core, non-polarity Type Shield wire

Size / Length

1.25 mm

to 2.0 mm

Up to 100 m (L5)

A B

◆ Group control through a remote controller

Group control of multiple indoor units (8 units) through a single remote controller

 Connection of power wires and communication wires

Remove knockouts on the piping / wiring panel on the front of the unit or the panel on the bottom to get the power and communication wires through the holes.

Separate the power wire and communication wires.

Table-3 Remote controller wiring (L6, L7)

Wire 2-core Size 0.5 mm

Length

to 2.0 mm2

• Up to 500 m (L6 + L7)

• Up to 400 m with of wireless remote controller in group control.

• Up to 200 m total length of control wiring between indoor units ( L6 )

35-EN 36-EN

–18–

Outdoor Unit

Power supply terminal block

Cord clamps

Communication terminal block

Protective bush (accessory)

Earth screw

Power supply wires

Communication wires

10 mm or more

Earth wire

Power supply wire

Installation Manual

–19–

Outdoor Unit

Installation Manual

2. Use round-type crimping terminals for power connection. Also, apply insulating sleeves to the crimping parts. Use a driver of appropriate size to fix the terminal screws.

◆ Power supply wire connection

1. Insert the power supply wire through the cutout on the side of the electrical control box and connect the power supply wire to the power supply terminal block and the earth wire to the earth screw. After that, fix the power supply wire with the 2 cord clamps.

Wire size*

2.5 mm

L1 L2 L3

L1 L2 L3 N

* Design 60245 IEC66

Screw size and tightening torque

Screw size

Power supply terminal M4 0.9 to 1.5 Earth screw M4 0.9 to 1.5

Tightening torque

(N•m)

37-EN 38-EN

Outdoor Unit

U3, U4: Central control device

1, U2: Communication wiring between Indoor / Outdoor unit

To indoor

unit

To central

controller

CAUTION

Outdoor

Indoor

Outdoor

Central

controller

Central

controller

Remote

controller

Remote

controller

Remote

controller

Outdoor

Indoor

Outdoor

Central

controller

Remote

controller

Remote

controller

Remote

controller

U. 1. L08 (U. 1. flash)

Installation Manual

Outdoor Unit

Installation Manual

◆ Communication wire connection

Get the communication wire through the cutout on the side of the electrical control box and connect it to the communication wire terminals, then fix it with the communication cable clamp.

U1 U2 U3 U4

Screw size and tightening torque

Screw size

Communication wire terminal M3.5 0.80 to 0.96

Tightening torque

(N•m)

7 Address setting

On this unit, it is required to set the addresses of the indoor units before starting air conditioning. Set the addresses following the steps below.

• Be sure to complete the electric wiring before setting the addresses.

• If you turn on the outdoor unit before turning on the indoor units, the CODE No. [E19] is indicated on the 7-segment display on the interface P.C. board of the outdoor unit until the indoor units are turned on. This is not a malfunction.

• It may take up to ten minutes (normally about five minutes) to address one refrigerant line automatically.

• Settings on the outdoor unit are required for automatic addressing. (Address setting is not started simply by turning on the power.)

• Running the unit is not required for address setting.

• The addresses can be set manually.

Automatic addressing: setting addresses using SW15 on the interface P.C. board on the outdoor unit Manual addressing:

 Automatic address setting

No central control: go to Address setting procedure 1 Central control of 2 or more refrigerant lines: go to Address setting procedure 2

(Example)

Address setting procedure

setting addresses on the wired remote controller. * When setting an address manually, the wired remote controller must temporarily be

paired with an indoor unit one-to-one. (when the system is organized for group operation and no Remote controller)

When controlling a single refrigerant line

centrally

To procedure 1 To procedure 2

When controlling 2 or more refrigerant lines

centrally

System wiring diagram

◆ Address setting procedure 1

1 Turn on indoor units first, and then turn on outdoor units. 2 About one minute after turning the power on, confirm that the 7-segment display on the interface

P.C. board of the outdoor unit indicates .

39-EN 40-EN

3 Press SW 15 to start the automatic address setting.

(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)

–20–

Outdoor Unit

REQUIREMENT

NOTE

Auto 1  Auto 2  Auto 3

U. 1. - - - (U. 1. flash)

U. 1. - - - (U. 1. light)

SW04

SW05 SW15

SW01

SW02 SW03

D600 D601 D602 D603

D604

2,4

Outdoor

Indoor

Outdoor

Remote

controller

(Group control)

SW06 SW07 SW09 SW10

SW11 SW12 SW13 SW14

1234 1234 1234 1234

Installation Manual

–21–

Outdoor Unit

Installation Manual

4 The 7-segment display indicates .

After the indication, starts flashing on the display. When the flashing stops and remain lit on the display, the setting is complete.

Interface P.C. board on the outdoor unit

• When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group before setting addresses.

• If you set the unit addresses of each line separately, each line’s header indoor unit is set separately. In that case, the CODE No. “L03” (indoor header unit overlap) is indicated as running starts. Change the group address to make one unit the header unit using wired remote controller.

(Example) Controlling 2 or more refrigerant lines as a group

System wiring diagram

◆ Address setting procedure 2

1 Set a system address for each system using SW 13 and 14 on the interface P.C. board on the

outdoor unit of each system. (factory default: Address 1)

Be sure to set a unique address on each system. Do not use a same address as another system (refrigerant line) or a custom side.

Interface P.C. board on the outdoor unit

Switch settings for a line (system) address on the interface P.C. board on the outdoor unit

(: switch ON, ✕: switch OFF)

Line (system) address

1 –––✕✕✕✕✕ 2 –––✕  ✕✕✕ 3 –––✕✕ ✕✕ 4 –––✕ ✕✕ 5 –––✕✕✕ ✕ 6 –––✕  ✕  ✕ 7 –––✕✕✕ 8 –––✕ ✕

9 –––✕✕✕✕ 10 –––✕  ✕✕ 11 –––✕✕ ✕  12 –––✕  ✕  13 –––✕✕✕ 14 –––✕  ✕  15 –––✕✕ 16 –––✕  17 ––– ✕✕✕✕ 18 –––✕✕✕ 19 ––– ✕  ✕✕ 20 –––✕✕ 21 ––– ✕✕ ✕ 22 –––✕  ✕ 23 ––– ✕ ✕ 24 –––✕ 25 ––– 26 –––✕✕ 27 ––– ✕  ✕  28 –––✕ 

12341234

SW13 SW14

✕✕✕

“–”: not used for system address setting (Do not change their positions.)

41-EN 42-EN

Outdoor Unit

To indoor

unit

To central

controller

U. 1. L08 (U. 1. flash)

Auto 1  Auto 2  Auto 3

U. 1. - - - (U. 1. flash)

U. 1. - - - (U. 1. light)

U1 U2 U3 U4

To indoor

unit

To central

controller

SW15

SW04

SW13 SW14

SW01 SW02

SW03

D600 D601 D602 D603 D604

SW05

SW30

7-segment

display

Header unit interface P.C. board

Installation Manual

Outdoor Unit

Installation Manual

2 Be sure to disconnect the relay connectors between the [U1,U2] and [U3,U4] terminals on all the

outdoor units that will be connected to the central control. (factory default: disconnected)

U1 U2 U3 U4

3 Turn on indoor units first, and then turn on outdoor units. 4 About 1 minute after turning the power on, confirm that the 7-segment display on the interface

P.C. board of the outdoor unit indicates .

5 Press SW 15 to start the automatic address setting.

(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)

6 The 7-segment display indicates .

After the indication, starts flashing on the display. When the flashing stops and , remains lit on the display, the setting is complete.

7 Repeat steps 4 to 6 for other refrigerant lines. 8 After completing address setting of all systems, turn off dip switch 2 of SW30 on the interface P.C.

boards of all the outdoor units connected to the same central control, except the unit that has the lowest address.

(For unifying the termination of the wiring for the central control of indoor and outdoor units)

9 Connect the relay connectors between the [U1, U2] and [U3, U4] terminals of the outdoor unit of

each refrigerant line.

Set the central control address.

(For the setting of the central control address, refer to the installation manuals of the central control devices.)

43-EN 44-EN

–22–

Outdoor Unit

CAUTION

U1 U2

U3 U4 U3U4 U3 U4

U1 U2 U1 U2

U1 U2 U1 U2 U1 U2 U1 U2 U1 U2

BAB ABAB AB

Central

controller

Relay

connector

Relay

connector

Relay

connector

Outdoor unit

Remote

controller

Remote

controller

Remote

controller

Remote

controller

Individual

Group

Indoor units (automatic setting)

Outdoor

unit

Outdoor

unit

Remote

controller

Indoor unit 1

Indoor unit 2

Indoor unit 3

Indoor unit 1

Indoor unit 2

Refrigerant line 1

Refrigerant line 2

ON / OFF

TEMP.

TIME

SET CL

FILTER RESET

TEST

TIMER SET

CODE No.

UNIT No.

SETTING

DATA

SET

R.C. No.

4, 7, 10

2, 5, 8

3, 6, 9

SET DATA

CODE No.

SET

TEST

Installation Manual

–23–

Outdoor Unit

Installation Manual

Switch setting (setting example when controlling 2 or more refrigerant lines centrally)

Outdoor units (setting manually)

Outdoor unit’s interface

P.C. board

SW13, 14 (line (system) address)

Dip switch 2 of SW30 (terminator of indoor / outdoor communication line and central control line)

Relay connector

Outdoor unit Outdoor unit Outdoor unit Factory default

Connect after setting

addresses.

1 231

Set to OFF after setting

Connect after setting

*The items in bold font must be set manually.

Set to OFF

addresses.

after setting

addresses.

Connect after

setting

addresses.

Open

 Manual address setting with the remote controller

Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller)

▼ Wiring example of 2 refrigerant lines

Line (system) address 1 1 1 2 2 Indoor unit address 1 2 3 1 2

Group address

In the example above, disconnect the remote controller connections between the indoor units and connect a wired remote controller to the target unit directly before address setting.

Header unit2Follower unit2Follower unit2Follower unit2Follower unit

Line (system) address 1 1 2 2 3 Indoor unit address 1 2 1 2 1 Group address 0 0 1 2 0

Pair the indoor unit to set and the remote controller one-to-one.

Turn on the power.

Relay connector connection

Never connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing address setting of all the refrigerant lines. Otherwise, the addresses cannot be set correctly.

45-EN 46-EN

1 Push and hold the , , and buttons at the same time for more than 4 seconds.

LCD starts flashing.

Outdoor Unit

NOTE

SET

}}

TES

SETTING

Starts running

ON / OFF

Stop

Installation Manual

Outdoor Unit

Installation Manual

2 Push the TEMP. / buttons repeatedly to set the CODE No. to . 3 Push the TIME / buttons repeatedly to set a system address.

(Match the address with the address on the interface P.C. board of the outdoor unit in the same refrigerant line.)

4 Push button.

(It is OK if the display turns on.)

5 Push the TEMP. / buttons repeatedly to set the CODE No. to . 6 Push the TIME / buttons repeatedly to set an indoor unit address. 7 Push the button.

(It is OK if the display turns on.)

8 Push the TEMP. / buttons repeatedly to set the CODE No. to . 9 Push the TIME / buttons repeatedly to set a group address. If the indoor unit is individual,

set the address to ; header unit, ; follower unit, .

Individual : 0000 Header unit : 0001 Follower unit : 0002

Push the button.

(It is OK if the display turns on.)

Push the button.

The address setting is complete. ( flashes. You can control the unit after has disappeared.)

1. Do not use address numbers 29 or 30 when setting system addresses using the remote controller. These 2 address numbers cannot be used on outdoor units and the CODE No. [E04] (Indoor / outdoor communication error) will appear if they are mistakenly used.

2. If you set addresses to indoor units in 2 or more refrigerate lines manually using the remote controller and will control them centrally, set the outdoor unit of each line as below.

• Set a system address for the outdoor unit of each line with SW13 and 14 of their interface P.C. boards.

• Turn off dip switch 2 of SW30 on the interface P.C. boards of all the outdoor units connected to the same

central control, except the unit that has the lowest address. (For unifying the termination of the wiring for the central control of indoor and outdoor units)

• Connect the relay connectors between the [U1, U2] and [U3, U4] terminals on the outdoor unit of each

refrigerate line.

• After finishing all the settings above, set the address of the central control devices. (For the setting of the

central control address, refer to the installation manuals of the central control devices.)

SET

In case of group control

 Confirming the indoor unit addresses and the position of an

indoor unit using the remote controller

◆ Confirming the numbers and positions of indoor units

To see the indoor unit address of an indoor unit which you know the position of

▼ When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or

it is a group-controlled one.

CODE No.

UNIT No.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET CL

ON / OFF

(Execute it while the units are running.)

1 Push the button if the units stop. 2 Push the button (left side of the button).

A unit numbers is indicated on the LCD (it will disappear after a few seconds). The indicated number shows the system address and indoor unit address of the unit. When 2 or more indoor units are connected to the remote controller (group-controlled units), a number of other connected units appears each time you push the button (left side of the button).

To find an indoor unit’s position from its address

▼ When checking unit numbers controlled as a group

UNIT No.

R.C. No.

CODE No.

ON / OFF

FILTER RESET

DATA

SET

SETTING

TEMP.

TIMER SET

TIME

SET CL

TEST

47-EN 48-EN

–24–

Outdoor Unit

VENT

TEST

ON / OFF

TEMP.

TIME

SET CL

FILTER RESET

TEST

TIMER SET

CODE No.

UNIT No.

SETTING

DATA

SET

R.C. No.

SET

3 5

2, 6, 7

ON / OFF

TEMP.

TIME

SET CL

FILTER RESET

TEST

TIMER SET

CODE No.

UNIT No.

SETTING

DATA

SET

R.C. No.

Finish

SET

TES

Installation Manual

–25–

Outdoor Unit

Installation Manual

(Execute it while the units are stopped.)

The indoor unit numbers in a group are indicated one after another. The fan and louvers of the indicated units are activated.

1 Push and hold the and buttons at the same time for more than 4 seconds.

• appears on UNIT No. on the LCD display.

• The fans and louvers of all the indoor units in the group are activated.

2 Push the button (left side of the button). Each time you push the button, the indoor unit

numbers are indicated one after another.

• The first-indicated unit number is the address of the header unit.

• Only the fan and louvers of the indicated indoor unit are activated.

3 Push the button to finish the procedure.

All the indoor units in the group stop.

▼ To check all the indoor unit addresses using an arbitrary wired remote controller.

(When communication wirings of 2 or more refrigerant lines are interconnected for central control)

(Execute it while the units are stopped.)

You can check indoor unit addresses and positions of the indoor units in a single refrigerant line. When an outdoor unit is selected, the indoor unit numbers of the refrigerant line of the selected unit are indicated one after another and the fan and louvers of the indicated indoor units are activated.

1 Push and hold the TIME and buttons at the same time for more than 4 seconds.

At first, the line 1 and CODE No. (Address Change) are indicated on the LCD display. (Select an outdoor unit.)

2 Push the (left side of the button) and buttons repeatedly to select a system

address.

3 Push the button to confirm the system address selection.

• The address of an indoor unit connected to the selected refrigerant line is indicated on the LCD display and

4 Push the button (left side of the button). Each time you push the button, the indoor unit

numbers of the selected refrigerant line are indicated one after another.

49-EN 50-EN

• Only the fan and louvers of the indicated indoor unit are activated.

TEST

its fan and louvers are activated.

TEST

SWING/FIX

◆ To select another system address

5 Push the button to return to step 2.

After returning to step 2, select another system address and check the indoor unit addresses of the line.

6 Push the button to finish the procedure.

TEST

 Changing the indoor unit address using a remote controller

To change an indoor unit address using a wired remote controller.

▼ The method to change the address of an individual indoor unit (the indoor unit is paired with a wired

remote controller one-to-one), or an indoor unit in a group. (The method is available when the addresses have already been set automatically.)

(Execute it while the units are stopped.)

SET

1 Push and hold the , , and buttons at the same time for more than 4 seconds.

(If 2 or more indoor units are controlled in a group, the first indicated UNIT No. is that of the head unit.)

TEST

2 Push the button (left side of the button) repeatedly to select an indoor unit number to

change if 2 or more units are controlled in a group. (The fan and louvers of the selected indoor unit are activated.)

(The fan of the selected indoor unit is turned on.)

3 Push the TEMP. / buttons repeatedly to select for CODE No.. 4 Push the TIME / buttons repeatedly to change the value indicated in the SET DATA section

to that you want.

5 Push the button. 6 Push the button (left side of the button) repeatedly to select another indoor UNIT No. to

change.

Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique.

7 Push the button (left side of the button) to check the changed addresses. 8 If the addresses have been changed correctly, push the button to finish the procedure.

Outdoor Unit

NOTE

Cancels the line selection

Press to finish setting.

Finish

TEST

Central controller

Outdoor unit

Remote controller

Indoor units to have their addresses initialized

Outdoor unit

Installation Manual

Outdoor Unit

Installation Manual

▼ To change all the indoor unit addresses using an arbitrary wired remote controller.

(The method is available when the addresses have already been set automatically.)

(When communication wirings of 2 or more refrigerant lines are interconnected for central control)

You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.

* Enter the address check / change mode and change the addresses.

UNIT No.

R.C. No.

CODE No.

ON / OFF

FILTER RESET

SET

TEMP.

TEST

DATA

SETTING

TIMER SET

TIME

SET CL

If no number appears on UNIT No., no outdoor unit exists on the line. Push button and select another line following step

(Execute it while the units are stopped.)

1 Push and hold the TIME and buttons at the same time for more than 4 seconds.

At first, the line 1 and CODE No. (Address Change) are indicated on the LCD display.

2 Push (left side of the button) and buttons repeatedly to select a system address. 3 Push the button.

• The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD

TEST

SWING/FIX

SET

display and the fan and louvers of the unit are activated. At first, the current indoor unit address is displayed in (No system address is indicated.)

DATA

SET

SETTING

FILTER RESET

TEMP.

UNIT No.

R.C. No.

TIMER SET

TIME

SET CL

TEST

SET DATA.

CODE No.

ON / OFF

4 Push the TIME / buttons repeatedly to change the value of the indoor unit address in SET

DATA. Change the value in SET DATA to that of a new address.

5 Push the button to confirm the new address on SET DATA.

SET

6 Push the button (left side of the button) repeatedly to select another address to change.

Each time you push the button, the indoor unit numbers in a refrigerant line are indicated one after another. Only the fan and louvers of the selected indoor unit are activated.

Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique.

7 Push the button.

SET

(All the segments on the LCD display light up.)

8 Push the button to finish the procedure.

 Resetting the address

(Resetting to the factory default (address undecided))

Method 1

Clearing each address separately using a wired remote controller. Set the system address, indoor unit address and group address to “0099” using a wired remote controller. (For the setting procedure, refer to the address setting procedures using the wired remote controller on the previous pages.)

Method 2

Clearing all the indoor unit addresses on a refrigerate line at once from the outdoor unit.

1 Turn off the refrigerant line to reset to the factory default and set the outdoor unit of the line as

below.

1) Disconnect the relay connectors between the [U1, U2] and [U3, U4] terminals. (Leave them as they are if they have already been disconnected.)

2) Turn on dip switch 2 of SW30 on the interface P.C. board of the outdoor unit if the switch is OFF. (Leave it as it is if it has already been set to ON.)

U1U3U2

U1 U2

U3 U4

A B

U1 U2

A B

U1 U2

U3 U4

A B

U1 U2

A B

U3 U4

U1 U2

A B

5, 7

51-EN 52-EN

–26–

Outdoor Unit

NOTE

CAUTION

Installation Manual

–27–

Outdoor Unit

Installation Manual

2 Turn on the indoor and outdoor units of the refrigerant line for which you want to initialize the

addresses. About one minute after turning on the power, confirm that the 7-segment display on the outdoor unit indicates “U.1. - - -” and operate the interface P.C. board on the outdoor unit of the refrigerant line as follows.

SW01 SW02 SW03 SW04 Clearable addresses

212

222

Confirm that the 7-segment display indicates “A.d.buS” and turn SW04 ON for more than five seconds.

Confirm that the 7-segment display indicates “A.d.nEt” and turn SW04 ON for more than five seconds.

System / indoor unit / group address

Central control address

3 Confirm that the 7-segment display indicates “A.d. c.L.” and set SW01, SW02 and SW03 to 1, 1, 1

respectively.

4 After a time “U.1.L08” appears on the 7-segment display if the address clearing has been

completed successfully. If the 7-segment display indicates “A.d. n.G.”, the outdoor unit may still connected with other refrigerant lines. Check the connection of the relay connectors between [U1, U2] and [U3, U4].

Take care to carry out the procedure above correctly; otherwise, addresses in other refrigerate lines may also be cleared.

5 Set the addresses again after finishing the clearance.

8 Test run

 Before test run

Confirm that the valve of the refrigerate pipe of the outdoor unit is OPEN.

• Before turning on the power, confirm that the resistance between the terminal block of power supply and the earth is more than 1 M using a 500 V megohmmeter. Do not run the unit if it is less than 1 M.

Turn on the power and turn on the case heater of the compressor. To save the compressor when it is activated, leave the power on for more than 12 hours.

 Methods of test run

◆ When executing a test run using a remote controller

Operate the system normally to check the running condition using the wired remote controller. Follow the instructions in the supplied owner’s manual when operating the unit. If you use a wireless remote controller for operations, follow the instructions in the installation manual supplied with the indoor unit. To execute a test run forcibly under the condition that the thermostat automatically turns the unit off due to the indoor temperature, follow the procedure below. The forcible test run will automatically stop after 60 minutes to prevent continuous forcible running and return to normal running.

Do not use forcible running except for a test run as it overloads the unit.

TEMP.

ON / OFF

2, 4

TIMER SET

FILTER RESET

TEST

TIME

SET CL

1, 5

53-EN 54-EN

Outdoor Unit

NOTE

ON / OFF

TEST

ON / OFF

NOTE

Address display of the corresponding indoor unit

[FF] is displayed for 5 seconds.

Installation Manual

Outdoor Unit

Installation Manual

1 Push and hold the button for more than 4 seconds. TEST appears on the LCD display and the

TEST

unit enters the test mode. (TEST is indicated on the LCD display during the test run.)

TEST

2 Push the button. 3 Push the button to switch the running mode to COOL or HEAT.

• Do not run the unit in any mode other than COOL or HEAT.

• You cannot change the temperature setting during the test run.

• Errors are detected as usual.

MODE

4 Push the button to stop running after finishing the test run.

The indication on the LCD display returns to the status of procedure 1.

5 Push the button to exit the test mode.

(TEST disappears on the LCD display and the status changes to normal stopped mode.)

TEST

◆ When executing a test run using the interface P.C. board on the outdoor

unit

You can execute a test run by operating switches on the interface P.C. board of the outdoor unit. “Individual test run”, which tests each indoor unit separately, and “corrective test run”, which tests all the indoor units connected, are available.

▼ Starting operation

1 Set the running mode to “COOL” or “HEAT” on the remote controller of the indoor unit to be

tested. (The unit will run in the current mode unless you set the mode otherwise.)

7-segment display

[A]

[U1]

[B]

[ ]

2 Set the rotary switches on the interface P.C. board of the outdoor unit: SW01 to [16], SW02 and

SW03 to the address of the indoor unit to be tested.

SW02 SW03 Indoor unit address

1 to 16 1 1 to 16 Set number of SW02 1 to 16 2 17 to 32 Set number of SW02 + 16 1 to 16 3 33 to 48 Set number of SW02 + 32 1 to 16 4 49 to 64 Set number of SW02 + 48

7-segment display

[A]

[ ]



[B]

[ ]

3 Push and hold SW04 for more than 10 seconds.

7-segment display

[A]

[ ]



• The running mode follows the mode setting on the remote controller of the target indoor unit.

• You cannot change the temperature setting during the test run.

• Errors are detected as usual.

• The unit does not perform test run for 3 minutes after turning the power on or stopping running.

55-EN 56-EN

–28–

[B]

[ ]

Outdoor Unit

NOTE

[A] [C ] [H ]

[B] [ ] [ ]

7-segment display

Push switch

7-segment display [A]

Push switch

7-segment display [B]

Rotary switches

Interface PC board

Installation Manual

–29–

Outdoor Unit

Installation Manual

▼ Finishing operation

1 Set the rotary switches on the interface P.C. board of the outdoor unit back: SW01 to [1], SW02 to

[1] and SW03 to [1].

7-segment display

[A]

[U1]

[B]

[ ]

▼ Start operation

1 Set the rotary switches on the interface P.C. board of the outdoor unit as below.

When in “COOL” mode: SW01=[2], SW02=[5], SW03=[1]. When in “HEAT” mode: SW01=[2], SW02=[6], SW03=[1].

2 Push and hold SW04 for more than 2 seconds.

7-segment display

[A] [C ] [H ]

[B] [ - C ] [ - H ]

▼ Stop operation

1 Set the rotary switches on the interface P.C. board of the outdoor unit back:

SW01 to [1], SW02 to [1] and SW03 to [1].

7-segment display

[A]

[U1]

[B]

[ ]

SW04

SW05 SW15

D600 D601 D602 D603 D604

SW01 SW02

SW03

• You cannot change the temperature setting during the test run.

• Errors are detected as usual.

• The unit does not perform test run for 3 minutes after turning the power on or stopping running.

57-EN 58-EN

Outdoor Unit

D600

D601 D602 D603 D604

Installation Manual

Outdoor Unit

Installation Manual

9 Troubleshooting

In addition to the CODE No. on the remote controller of an indoor unit, you can diagnose failure type of an outdoor unit by checking the 7-segment display on the interface P.C. board. Use the function for various checks. Set every dip switch to OFF after checking.

7-Segment display and check code

Rotary switch setting value

SW01 SW02 SW03

1 1 1 Outdoor unit check code

* If a check code has an auxiliary code, the display indicates the check code for three seconds and the auxiliary

code for one second alternately.

Check code (indicated on the 7-segment display on the outdoor unit)

Indicated when SW01 = [1], SW02 = [1], and SW03 = [1].

Check code

Auxiliary code

E06 Number of indoor units which received normally Decrease of number of indoor units E07 — Indoor / outdoor communication circuit error E08 Duplicated indoor addresses Duplication of indoor addresses. E12 — Automatic addressing start error E15 — No indoor unit during automatic addressing

00: Capacity over

E16

01~: Number of connected units 01: Other line outdoor connected

E20

02: Other line indoor connected E31 IPDU quantity information F04 — TD sensor error F06 — TE sensor error F07 — TL sensor error F08 — TO sensor error F12 — TS sensor error F13 — TH sensor (Board installed) error F15 — Outdoor temp. sensor miswiring (TE, TL) F16 — Outdoor pressure sensor miswiring (Pd, Ps) F23 — Ps sensor error F24 — Pd sensor error F31 — Outdoor EEPROM error H01 — Compressor breaking down H02 — Compressor error (Locked) H03 — Current detection circuit error

59-EN 60-EN

H05 — TD sensor miswiring

Indication LED

(*1)

B Check code display*

Capacity over / number of connected indoor units

Other lines connected during automatic addressing

IPDU communication error

Outdoor unit number

Check code nameIndication on 7-segment display on the outdoor unit

–30–

H06 — Low pressure proctive operation

L04 — Outdoor system address duplication L06 Number of prior indoor units Duplication of indoor units with priority L08 — Indoor unit group / address unset L10 — Outdoor unit capacity unset. L29 IPDU number information L30 Detected indoor unit address External interlock of indoor unit L31 — Other compressor errors

P03 — Discharge temperature TD error

00: Phase missing / power failure detection

P05

01: Compressor Inverter DC voltage error (on compressor) P07 — Heat sink overheat error P10 Detected indoor unit address Indoor overflow error P13 — Outdoor unit flow back error detected

01: TS condition P15

02: TD condition P19 Detected outdoor unit number 4-way valve inverse error P20 — High-pressure protective operation

0✽:IGBT circuit

1✽: Position detection circuit error

3✽: Motor lock error

4✽: Motor current detected P22

C✽: TH sensor temp.error

D✽: TH sensor error

E✽: Inverter DC voltage error

P26 — G-TR short protection error P29 — Compressor position detecting circuit error

*1PDU number information

01:Compressor 08:Fan 09:Compressor and fan

Check code

Auxiliary code

(outdoor unit’s fan)

(*1)

Check code nameIndication on 7-segment display on the outdoor unit

IPDU quantity error

Gas leak detection

Outdoor fan IPDU error

(NOTE)

Ignore 0-F appearing in the position of “✽”.

WARNINGS ON REFRIGERANT LEAKAGE

Total amount of refrigerant (kg)

Min. volume of the indoor unit installed room (m

)

 Concentration limit (kg/m

)

e.g., charged amount (10 kg)

Outdoor unit

e.g., charged amount (15 kg)

Indoor unit

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

Outdoor unit

Refrigerant piping

Indoor unit

Refrigerant piping

Outdoor unit

Indoor unit

Mechanical ventilation device - Gas leak detector

Very small room

Small room

Medium room

Large room

Min. indoor floor area

Total amount of refrigerant kg

Range below the density limit of

0.30 kg/m

(countermeasures not needed)

Range above the density limit of

0.30 kg/m

(countermeasures needed)

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.

The concentration limit of R410A which is used in multi air conditioners is 0.30 kg/m

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.

Important

NOTE 2 :

The standards for minimum room volume are as follows.

(1) No partition (shaded portion)

(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).

(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.

For the amount of charge in this example:

The possible amount of leaked refrigerant gas in rooms A,

EH99883601

B and C is 10 kg. The possible amount of leaked refrigerant gas in rooms D, E and F is 15 kg.

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)

Toshiba MCY-MAP0604HT8, MCY-MAP0604HT7, MCY-MAP0804HT7, MCY-MAP0804HT8 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual