Toshiba_Air_Conditioner_MMY-MAP0804HT8-E

Original instruction

ADOPTION OF NEW REFRIGERANT

This Air Conditioner uses R410A an environmentally friendly refrigerant.

Contents

1 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 ACCESSORY PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER . . . . . . . . . . . . . . . . . 4 4 SELECTION OF INSTALLATION PLACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 CARRYING IN THE OUTDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 INSTALLATION OF THE OUTDOOR UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 REFRIGERANT PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 ELECTRIC WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 ADDRESS SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 10 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 11 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 12 MACHINE CARD AND LOGBOOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Thank you for purchasing this Toshiba air conditioner.

This Installation Manual describes the installation method of the outdoor unit. For installation of indoor units, follow the Installation Manual supplied with the indoor unit.

Moreover, as this installation manual includes the important articles concerning the ???Machinery??? Directive (Directive 2006/42/ EC), please read through the manual and make sure you understand it. After installation, give this Installation Manual, the Owner???s Manual and the Installation Manual supplied with the indoor unit to the customer and tell the customer to keep them safe.

Prepare an exclusive power source for indoor units, independent to that for outdoor units.

Y-shaped branching joints or a branching header (separately purchased) are required for connecting pipes between indoor and outdoor units. Choose either of them considering the system capacity concerning piping. For installing branching pipes, refer to the installation manual of the Y-shaped branching unit or branching header (separately purchased).

Outdoor connecting branching joints are required for connecting between outdoor units.

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 table below.

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 table below.

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

1 PRECAUTIONS FOR SAFETY

WARNING

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 installationwork. 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 (M12) and nuts (M12) 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.

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 electric parts 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 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.

???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 (500V 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 sucked 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.???

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, 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.

4 SELECTION OF INSTALLATION PLACE

Upon customer???s approval, install the air conditioner in a place which satisfies the following conditions:

???Place where it can be installed horizontally.

???Place which can reserve a sufficient service space for safe maintenance or checks.

???Place where there is no problem even if the drained water overflows.

Avoid the following places:

???Salty places (seaside area) or places with much gas sulfide (hot spring area) (If selecting such a place, special maintenance is required.)

???Places where oil (including machine oil), steam, oil smoke or corrosive gas is generated.

???Places where an organic solvent is used.

???Chemical plants with a cooling system using liquid carbon dioxide.

???Places where a device generating high frequency (inverter, non-utility generator, medical apparatus, or communication equipment) is set. (Malfunction or abnormal control of the air conditioner, or interference to devices listed above may occur.)

???Places where discharged air from the outdoor unit blows against the windows of a neighbour's house.

???Places unable to bear the weight of the unit.

???Places with poor ventilation.

??Installation space

Leave space necessary for running, installation and servicing.

Air discharge

Air intake

NOTE

???If there is an obstacle above the outdoor unit, leave a space of 2000mm or more to the top end of the outdoor unit.

???If there is a wall around the outdoor unit, make sure that its height does not exceed 800mm.

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??Weight centre and weight

???Weight centre of an outdoor unit

6 INSTALLATION OF THE OUTDOOR UNIT

WARNING

???Be sure to install the outdoor unit in a place able to bear its weight.

If strength is insufficient, the unit may fall down resulting in human injury.

???Perform specified installation work to protect against strong wind and earthquakes.

If the outdoor unit is imperfectly installed, an accident by falling or dropping may be caused.

CAUTION

???Drain water is discharged from the outdoor unit. (Especially while heating) Install the outdoor unit in a place with good drainage.

???For installation, be careful of the strength and level of the foundation so that abnormal sounds (vibration or noise) are not generated.

REQUIREMENT

Installation in a snowfall area

1.Install the outdoor unit on a higher foundation than the snowfall or set up a stand to install the unit so that snowfall will not affect the unit.

???Set up a stand higher than the snowfall.

???Apply an angled structure to the stand so that drainage will not be prevented. (Avoid using a stand with a flat surface.)

2.Mount a snowfall-hood onto the air inlet and the air outlet.

???Leave enough space for the snowfall-hood so that it will not be an obstacle for the air inlet and the air outlet.

Snowfall-hood for air outlet (locally procured)

Snowfall-hood for air outlet

(4 faces)

(locally procured)

Stand

(locally procured)

1.To install multiple outdoor units, arrange them with 20mm or more spaces in between.

Fix each outdoor unit with M12 anchor bolts at 4 positions. 20mm projection is appropriate for an anchor bolt.

M12 anchor bolt

4 positions/unit

??? Anchor bolt positions are as shown below:

(Unit: mm)

5.Be careful of the connecting arrangement of the header unit and follower units. Set the outdoor units in order of capacity from the one with the largest capacity. (A (Header unit) ??? B ??? C ??? D)

???Be sure to use a header unit for the leading outdoor unit to be connected to the main pipe. (Figure 1 and 3)

???Be sure to use a T-shaped branch joint (RBM-BT14E/RBM-BT24E: separately purchased) to connect each outdoor unit.

???Be careful of the direction of the Outdoor unit connection piping kit for the liquid side. (As shown in Figure 2, a Outdoor unit connection piping kit cannot be attached so that the refrigerant of the main pipe flows directly into the header unit.)

Liquid piping

2.When drawing out the refrigerant pipe from the underside, set the height of the stand to 500mm or more.

500mm or more

3.Do not use 4 stands on the corner to support the outdoor unit.

Gas piping

4. Mount the vibration-proof rubber (including vibration-proof blocks) so that it fits under the whole clamping leg.

The bent part of the fixing leg is not grounded.

Main pipe

To the indoor unit

To gas-side branch unit

???When attaching a Y-shaped branch unit for the gas side, attach it level with the ground (Be sure not to exceed ??15 degrees.). Regarding a T-shape branch joints for the liquid side, there is no restriction for its angle.

At a level position

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???System restriction

???Cautions for installation

???Set the outdoor unit first connected to the bridging pipe to the indoor units as the header unit.

???Install the outdoor units in order of their capacity codes: A (header unit) ??? B ??? C ??? D

???When connecting gas pipes to indoor units, use Y-shaped branching joints to keep pipes level.

???When piping to outdoor units using Outdoor unit connection piping kits, intersect the pipes to the outdoor unit and those to indoor units at a right angle as shown in figure 1 on ???6. INSTALLATION OF THE OUTDOOR UNIT???. Do not connect them as in figure 2 on ???6. INSTALLATION OF THE OUTDOOR UNIT???.

???Allowable length and allowable height difference of refrigerant piping

*1: Farthest outdoor unit from the first branch: (D), farthest indoor unit: (j)

*2: If the total capacity of outdoor units is 46HP or more, make the equivalent length 70m (real length 50m) or less.

*3: Make the difference 65m or less if the height difference between outdoor and indoor units (H1) is more than 3m.

*4: Make the difference 50m or less if the height difference between indoor units (H2) is more than 3m.

*5: Make the difference 30m or less if the height difference between indoor units (H2) is more than 3m.

??Airtightness test

After the refrigerant piping has been finished, execute an airtight test.

For an airtight test, connect a nitrogen gas canister as shown in the figure on the next page and apply pressure.

???Be sure to apply pressure from the service ports of the packed valves (or ball valves) at the liquid side, gas side and balance pipe side.

???An airtight test can only be performed at the service ports at the liquid side, gas side and balance pipe side on header unit.

???Close the valves fully at the gas side, liquid side and balance pipe side. As there is a possibility that the nitrogen gas will enter into the cycle of outdoor units, re-tighten the valve rods at the liquid side and balance pipe side before applying pressure.

(When using MAP140 or MAP160, you do not have to re-tighten the liquid side valve rod as their valves at the liquid side are ball valves.)

???For each refrigerant line, apply pressure gradually in steps at the liquid side, gas side and balance pipe side.

Be sure to apply pressure at the gas side, liquid side, and balance pipe side.

WARNING

Never use oxygen, flammable gases, or noxious gases in an airtight test.

Piping at site

Service port

Balanced pipe side valve fully closed

Connected to other follower units

Able to detect a serious leakage

1.Apply pressure 0.3MPa (3.0kg/cm??G) for 5 minutes or more.

2.Apply pressure 1.5MPa (15kg/cm??G) for 5 minutes or more.

Available to detect slow leakage

3. Apply pressure 3.73MPa (38kg/cm??G) for approx. 24 hours.

??? If there is no pressure decrease after 24 hours, the test is passed.

NOTE

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

REQUIREMENT

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.

??Vacuum drying

???Be sure to perform vacuuming from both liquid and gas sides.

???Be sure to use a vacuum pump equipped with the counter-flow prevention function so that oil in the pump will not flow back into piping for air conditioners. (If oil in the vacuum pump enters in the air conditioner with R410A refrigerant, a problem may be caused in the refrigerating cycle.)

After finishing the airtight test and discharging nitrogen gas, connect the gauge manifold to the service ports of the liquid side, gas side, and balance pipe side and connect a vacuum pump as shown in the figure below. Be sure to perform vacuuming for the liquid, gas, and balance pipe sides.

Follower units

???Use a vacuum pump with a high vacuuming degree [-100.7kPa (5Torr, -755mmHg)] and large exhaust gas amount (40L/minute or larger).

???Perform vacuuming for 2 or 3 hours, though the time differs depending on the pipe length. Check that all the packed valves at the liquid side, gas side, and balance pipe side are fully closed.

???If the pressure does not reach -100.7kPa or less, continue vacuuming for 1 hour or more. If the pressure does not reach -100.7kPa after 3 hours of vacuuming, stop vacuuming and check for air leakage.

???If the pressure reaches -100.7kPa or less after vacuuming for 2 hours or more, close the valves VL and VH on the gauge manifold fully and stop the vacuum pump. Leave it as it is for 1 hour to confirm that the vacuuming degree does not change.

If the degree of vacuum loss is large, moisture may remain in the pipes. In that case, inject dry nitrogen gas and apply pressure to 0.05MPa and perform vacuuming again.

???After finishing the above procedure of vacuuming, exchange the vacuum pump with a refrigerant canister and advance to the additional charging of refrigerant.

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??Full opening of the valve

Open the valves of the outdoor unit fully.

Ball valve

Using a minus screwdriver, turn it counterclockwise by 90?? until it hits the stopper. (Full open)

Gas side

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??F-GAS label

This product contains fluorinated greenhouse gases covered by the Kyoto Protocol

CAUTION

1.Stick the enclosed refrigerant label adjacent to the charging and/or recovering location.

2.Clearly write the charged refrigerant quantity on the refrigerant label using indelible ink. Then, place the included transparent protective sheet over the label to prevent the writing from rubbing off.

3.Prevent emission of the contained fluorinated greenhouse gas. Ensure that the fluorinated greenhouse gas is never vented to the atmosphere during installation, service or disposal. When any leakage of the contained fluorinated greenhouse gas is detected, the leak shall be stopped and repaired as soon as possible.

4.Only qualified service personnel are allowed to access and service this product.

5.Any handling of the fluorinated greenhouse gas in this product, such as when moving the product or recharging the gas, shall comply under (EC) Regulation No. 842/2006 on certain fluorinated greenhouse gases and any relevant local legislation.

6.Periodical inspections for refrigerant leaks may be required depending on European or local legislation.

7.Contact dealers, installers, etc., for any questions.

??Heat insulation for pipe

???Apply heat insulation of pipe separately at the liquid, gas, and balance sides.

???Be sure to use thermal insulator resistant up to 120??C or higher for pipes at the gas side.

??Finishing after connecting pipes

???After piping connection work has been finished, cover the opening of the piping/wiring panel with the piping cover, or fill silicon or putty into the space between the pipes.

???In case of drawing-out the pipes downward or sideward, also close the openings of the base plate and the side plate.

???Under the opened condition, a problem may be caused due to the entering of water or dust.

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When using the piping cover

Piping/wiring panel

Drawing-out sideward

Close the opening with the pipe cover.

Drawing-out

frontwardDrawing-out downward

???Pipe holding bracket

Attach pipe holding brackets following the table below.

Installation Manual

When not using the piping cover

Piping/wiring panel

Drawing-out sideward

Fill silicon or putty into the periphery of the pipes.

Drawing-out

frontwardDrawing-out downward

8 ELECTRIC WIRING

WARNING

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.

CAUTION

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

???Do not connect 380V - 415V power to the terminal blocks for control cables (U1, U2, U3, U4, U5, U6); 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 supply specifications

Do not bridge the power between outdoor units through the equipped terminal blocks (L1, L2, L3, N).

Power supply for outdoor units

NO GOOD

???Power wiring selection

Standard model

MCA: Minimum Circuit Amps

MOCP: Maximum Overcurrent Protection (Amps)

??Regulation of high frequency wave

This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc (*1) at the interface point between the user???s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc (*1)

Furthermore, when similar equipment or other equipment which may cause harmonic current emissions are to be connected to the same interface point with this equipment, to reduce the risk of possible problems which may be caused from addition of those harmonic current emissions, it is recommended to make sure that the short-circuit power Ssc at the interface point is greater than the sum of the minimum Ssc required by all the equipment which will be connected to the interface point.

Ssc (*1)

9 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.

CAUTION

???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 header outdoor unit

Manual addressing: 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)

REQUIREMENT

???High voltage parts exist in the electrical control box. If you set addresses on an outdoor unit, operate the unit through the access door shown on the illustration on the right to avoid electric shock. Do not remove the cover of electrical control box.

*After finishing operations, close the access door cover and fix it with the screw.

??Automatic address setting

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2 Push the TEMP. / buttons repeatedly to set the CODE No. to .

3 Push the TIME / buttons repeatedly to set a system address.

Installation Manual

NOTE

SMMS-iInstallation Manual

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

4 Push SET 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 SET 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, .

10 Push the SET button.

(It is OK if the display turns on.)

11 Push the TEST button.

The address setting is complete.

( SETTING flashes. You can control the unit after SETTING has disappeared.)

???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.

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).

(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.

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 TEST 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

Push the SET button.

/ buttons for CODE No..

Push the TEMP. repeatedly to select

4 Push the TIME / buttons repeatedly to change the value indicated in the SET DATA section to that you want.

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

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.)

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

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TEMP. ON / OFF

TIMER SET

1 TIME

(Execute it while the units are stopped.)

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 TEST button to finish the procedure.

NOTE

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.

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

CODE No.

SET DATA SETTING

UNIT No.

R.C. No.

TEMP.ON / OFF

another and the fan and louvers of the indicated indoor units are activated.

1 Push and hold the TIME and TEST 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

TEMP.

ON / OFF

SET CL

2, 6, 7

If no number appears on UNIT No., no outdoor unit exists on the line. Push CL button and select another line following step 2.

SWING/FIX buttons repeatedly to select a system address.

3 Push the SET 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 its fan and louvers are activated.

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.

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

???To select another system address

5 Push the CL CL button to return to step 2.

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

(Execute it while the units are stopped.)

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

(Execute it while the units are stopped.)

1 Push and hold the TIME / 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 SWING/FIX buttons repeatedly to select a system

address.

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3 Push the SET button.

Installation Manual

???The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD display and the fan and louvers of the unit are activated.

At first, the current indoor unit address is displayed in SET DATA.

(No system address is indicated.)

TEMP.ON / OFF

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 header outdoor unit of the line as below.

Press to finish setting.

Indoor units to have their addresses initialized

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 SET button to confirm the new address on SET DATA.

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 SET button.

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

8 Push the TEST button to finish the procedure.

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 header outdoor unit indicates ???U.1. - - -??? and operate the interface P.C. board on the header outdoor unit of the refrigerant line as follows.

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].

NOTE

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.

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10TEST 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 1M?? using a 500V

megohmmeter.

Do not run the unit if it is less than 1M??.

CAUTION

???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.

CAUTION

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

mode to COOL or HEAT.

NOTE

???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.

??? 29 ???

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???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 header outdoor unit.

???Individual trial???, which tests each indoor unit separately, and ???corrective trial???, 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][B]

2 Set the rotary switches on the interface P.C. board of the header outdoor unit: SW01 to [16], SW02 and SW03 to the address of the indoor unit to be tested.

7-segment display

[A][B]

???

Address display of the corresponding indoor unit

3 Push and hold SW04 for more than 10 seconds.

7-segment display

[A][B]

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NOTE

???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.

??? Finishing operation

1 Set the rotary switches on the interface P.C. board of the header unit back: SW01 to [1], SW02 to [1] and SW03 to [1].

7-segment display

[A][B]

*1PDU number information

01:Compressor 1 02:Compressor 2 03:Compressors 1 and 2 04:Compressor 3 05:Compressors 1 and 3 06:Compressors 2 and 3 07:Compressors 1, 2 and 3 08:Fan

09:Compressor 1 and fan 0A:Compressor 2 and fan 0B:Compressors 1, 2 and fan 0C:Compressor 3 and fan 0D:Compressors 1, 3 and fan 0E:Compressors 2, 3 and fan 0F:Compressors 1, 2, 3, and fan

12MACHINE CARD AND LOGBOOK

??Machine card

After test run, fill the items on the machine card and paste the card on an accessible place on the product securely before delivery to the customer.

Describe the following items on the machine card:

name, address and telephone number of the installer, his service department, the service department of the party concerned or at any addresses and telephone numbers of fire department, police, hospitals and burn centres;

??Logbook

Update the log periodically after maintenance as defined in EN378-4.

Describe the following items on the logbook:

1.details of the maintenance and repair works;

2.quantities, kind of (new, reused, recycled) refrigerant which have been charged on each occasion, the quantities of refrigerant which have been transferred from the system on each occasion (see also EN378-4);

3.if there is an analysis of a reused refrigerant, the results shall be kept in the logbook;

4.source of the reused refrigerant;

5.changes and replacements of components of the system;

6.result of all periodic routine tests;

7.significant periods of non-use.

WARNINGS ON REFRIGERANT LEAKAGE

EH99871699

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 (m3) ??? Concentration limit (kg/m3)

The concentration limit of R410A which is used in multi air conditioners is 0.44kg/m3.

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.

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

Indoor unit

For the amount of charge in this example:

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

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

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).

Outdoor unit

Refrigerant piping

Indoor unit

(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.

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 2.7m high)