Fujitsu AUUB18TLAV1 Installation Manual

AUUB18TLAV1

AUUB24TLAV1

AUUB30TLAV1

AUUB36TLAV1

AUUB48TLAV1

TM

INSTALLATION MANUAL

INDOOR UNIT (Cassette Type)

For authorized service personnel only.

MANUEL D’INSTALLATION

UNITÉ INTÉRIEURE (type cassette)

Pour le personnel agréé uniquement.

MANUAL DE INSTALACIÓN

UNIDAD INTERIOR (Tipo casete)

Únicamente para personal de servicio autorizado.

PART No. 9371022574

INSTALLATION MANUAL

PART No. 9371022574

VRF system indoor unit (Cassette type)

Contents

1.1. IMPORTANT! Please read before starting .........................................................1

1.2. SPECIAL PRECAUTIONS .................................................................................1

2.1. Precautions for using R410A refrigerant ............................................................2

2.2. Special tools for R410A ......................................................................................2

2.3. Accessories ........................................................................................................2

2.4. Optional parts .....................................................................................................2

2.5. About unit of the length ......................................................................................2

3.1. Selecting an installation location ........................................................................3

3.2. Installation dimension .........................................................................................3

3.3. Installing the unit ................................................................................................3

4.1. Selecting the pipe material .................................................................................4

4.2. Pipe requirement ................................................................................................4

4.3. Flare connection (pipe connection) ....................................................................4

4.4. Installing heat insulation .....................................................................................5

5. INSTALLING DRAIN PIPES .....................................................................................5

6.1. Electrical requirement .........................................................................................6

6.2. Wiring method ....................................................................................................7

6.3. Unit wiring ...........................................................................................................7

6.4. Connection of wiring ...........................................................................................8

6.5. Optional parts wiring ...........................................................................................9

6.6. External input and external output (Optional parts) ............................................9

7.1. Setting the address ............................................................................................11

7.2. Custom code setting ...........................................................................................11

7.3. Function setting ..................................................................................................11

8. CASSETTE GRILLE INSTALLATION .......................................................................12

9.1. Test run using Outdoor unit (PCB) .....................................................................12

9.2. Test run using remote controller .........................................................................12

1.1. IMPORTANT! Please read before starting

This air conditioning system meets strict safety and operating standards.

As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently.

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

• Carefully read this instruction booklet before beginning.

• Follow each installation or repair step exactly as shown.

• Observe all local, state, and national electrical codes.

• Pay close attention to all danger, warning, and caution notices given in this manual.

WARNING:

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

CAUTION:

This symbol refers to a hazard or unsafe practice which can result in personal injury and the potential for product or property damage.

• Hazard alerting symbols

: Electrical : Safety/alert

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions.

If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A

QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

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

• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate earthing (grounding) can cause accidental injury or death.

• Earth (Ground) the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fi re hazard.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fi ns on the air conditioner can cut your fi ngers.

When Installing...

...In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.

...In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and fl oors.

...In an Area with High Winds

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

Provide a suitable air baf fl e.

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

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

When Connecting Refrigerant Tubing

• Keep all tubing runs as short as possible.

• Use the fl are method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces of the fl are and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

• Check carefully for leaks before opening the refrigerant valves.

When Servicing

• Turn the power OFF at the main circuit breaker panel before opening the unit to check or repair electrical parts and wiring.

• Keep your fi ngers and clothing away from any moving parts.

• Clean up the site after you fi nish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

• After installation, explain correct operation to the customer, using the operating manual.

DANGER

Never touch electrical components immediately after the power supply has been turned off. Electrical shock may occur. After turning off the power, always wait 5 minutes or more before touching electrical components.

• Be sure to read this Manual thoroughly before installation.

• The warnings and precautions indicated in this Manual contain important information pertaining to your safety. Be sure to observe them.

• Hand this Manual, together with the Operating Manual to the customer.

• Request the customer to keep them on hand for future use, such as for relocating or repairing the unit.

WARNING

Request your dealer or a professional installer to install the unit in accordance with this

Manual.

An improperly installed unit can cause serious accidents such as water leakage, electric shock, or fire.

If the unit is instruction in disregard of the instructions in the Installation Manual, it will void the manufacturer’s warranty.

Do not turn ON the power until all work has been completed.

Turning ON the power before the work is completed can cause serious accidents such as electric shock or fire.

If refrigerant leaks while work is being carried out, ventilate the area.

If the refrigerant comes in contact with a flame, it produces a toxic gas.

Installation must be performed in accordance with the requirement of NEC (National

Electrical Code) and CEC (Canadian Electrical Code) by authorized personnel only.

Except for EMERGENCY, never turn off main as well as sub breaker of the indoor units during operation. It will cause compressor failure as well as water leakage. First, stop the indoor unit by operating the control unit, converter or external input device and then cut the breaker.

Make sure to operate through the control unit, converter or external input device.

When the breaker is designed, locate it at a place where the users cannot start and stop in the daily work.

En-1

2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

WARNING

Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle.

If air enters the refrigeration cycle, the pressure in the refrigeration cycle will become abnormally high and cause the piping to rupture.

If there is a refrigerant leakage, make sure that it does not exceed the concentration limit.

If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such as oxygen starvation.

Do not touch refrigerant that has leaked from the refrigerant pipe connections or other area. Touching the refrigerant directly can cause frostbite.

If a refrigerant leakage occurs during operation, immediately vacate the premises and thoroughly ventilate the area.

If the refrigerant comes in contact with a flame, it produces a toxic gas.

2.2. Special tools for R410A

WARNING

To install a unit that uses R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifically for R410A use. Because the pressure of R410A refrigerant is approximately 1.6 times higher than the R22, failure to use dedicated piping material or improper installation can cause rupture or injury.

Furthermore, it can cause serious accidents such as water leakage, electric shock, or fire.

Tool name

Gauge manifold

Charging hose

Vacuum pump

Gas leakage detector

Contents of change for R22 tool

Pressure is huge and cannot be measured with a conventional

(R22) gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed.

It is recommended to use a gauge manifold with a high pressure display range 30 in Hg to 768 psi (–0.1 to 5.3 MPa) and a low pressure display range 30 in Hg to 551 psi (–0.1 to 3.8 MPa).

To increase pressure resistance, the hose material and base size were changed.

A conventional (R22) vacuum pump can be used by installing a vacuum pump adapter.

• A conventional vacuum pump can be used by installing a vacuum pump adapter.

• Be sure that the pump oil does not back flow into the system.

Use one capable for vacuum suction of 5 Torr, –755 mm Hg

(–100.7 kPa).

Special gas leakage detector for HFC refrigerant R410A.

2.3. Accessories

WARNING

For installation purposes, be sure to use the parts supplied by the manufacturer or other prescribed parts.

The use of non-prescribed parts can cause serious accidents such as the unit to fall, water leakage, electric shock, or fire.

The following installation parts are furnished. Use them as required.

Keep the Installation Manual in a safe place and do not discard any other accessories until the installation work has been completed.

Name and Shape

Operation manual

Q’ty Application

1

Installation manual (This book)

1

Cable tie (Large) For fixing the connection pipe

(Large and Small).

4

Push mount cable tie

Coupler heat insulation

(Small)

Coupler heat insulation (Large)

1

For transmission and remote controller cable binding.

For indoor side pipe joint (Small).

1

For indoor side pipe joint (Large).

1

Template

(Carton top)

Washer

Insulation

Drain hose

Hose band

Drain pipe insulation

For installing indoor unit.

1

For installing indoor unit.

8

For installing drain pipe

1

1

For installing drain pipe.

(Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.])

For installing drain hose.

1

1

For installing drain pipe.

Description

External connect kit

IR receiver kit

Human sensor kit

Wide panel

Panel spacer

Air outlet shutter plate

Model

UTY-XWZXZC

UTY-XWZXZB

UTY-XWZXZD

UTY-XWZXZ7

UTY-XWZXZE

UTY-LBHXD

UTY-SHZXC

UTG-AKXA-W

UTG-BKXA-W

UTR-YDZK

Application

For output function.

(Output terminal / CNB01)

For control input function.

(Apply voltage terminal / CNA01)

For control input function.

(Dry contact terminal / CNA02)

For forced thermostat off function.

(Apply voltage terminal / CNA03)

For forced thermostat off function.

(Dry contact terminal / CNA04)

For air conditioner operation.

To prevent waste of electricity, this function controls the temperature setting when no one is occupying the room.

Wide panel hides the gap between the ceiling hole and the Cassette grille.

Installation in a space of 1-9/16 in (56 mm) or greater is possible by using panel spacer when the height behind the ceiling is low.

Install the plate at outlet when carrying out 3-way direction operation.

Insulation kit for high humidity

UTZ-KXRA, UTZ-KXGA

(For indoor unit height

11-3/4 in (298 mm))

UTZ-KXGB

(For indoor unit height

10-1/16 in (256 mm))

Install when the condition under the roof is over 80% in humidity and over

86°F (30°C) in temperature.

* You cannot use the Fresh air intake kit (UTZ-VXGA) for this product.

2.5. About unit of the length

All Fujitsu General products are manufactured to metric units and tolerances. United

States customary units are provided for reference only. In cases where exact dimensions and tolerances are required, always refer to metric units.

En-2

Correct initial installation location is important because it is difficult to move unit after it is installed.

3.1. Selecting an installation location

Decide the mounting position together with the customer as follows.

WARNING

Select installation locations that can properly support the weight of the indoor. Install the units securely so that they do not topple or fall.

CAUTION

Do not install the unit in the following areas:

• Area with high salt content, such as at the seaside.

It will deteriorate metal parts, causing the parts to fail or the unit to leak water.

• Area filled with mineral oil or containing a large amount of splashed oil or steam, such as a kitchen.

It will deteriorate plastic parts, causing the parts to fail or the unit to leak water.

• Area that generates substances that adversely affect the equipment, such as sulfuric gas, chlorine gas, acid, or alkali.

It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant leakage.

• Area that can cause combustible gas to leak, contains suspended carbon fibers or flammable dust, or volatile inflammables such as paint thinner or gasoline.

If gas leaks and settles around the unit, it can cause a fire.

• Area where animals may urinate on the unit or ammonia may be generated.

Do not use the unit for special purposes, such as storing food, raising animals, growing plants, or preserving precision devices or art objects.

It can degrade the quality of the preserved or stored objects.

Do not install where there is the danger of combustible gas leakage.

Do not install the unit near a source of heat, steam, or flammable gas.

Install the unit where drainage does not cause any trouble.

Install the indoor unit, power supply cable, transmission cable, and remote controller cable at least 40 in (1 m) away from a television or radio receivers. The purpose of this is to prevent TV reception interference or radio noise.

(Even if they are installed more than 40 in (1 m) apart, you could still receive noise under some signal conditions.)

If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.

Use the “Insulation kit for high humidity” (option), when the condition under the roof is over 80% in humidity and over 86 °F (30 °C) in temperature. Otherwise, there is a risk of condensation on the ceiling.

Decide the mounting position with the customer as follows:

(1) Install the indoor unit on a place having a sufficient strength so that it withstands against the weight of the indoor unit.

(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all over the room.

(3) Leave the space required to service the air conditioner.

(4) A place from where the air can be distributed evenly throughout the room by the unit.

(5) Install the unit where connection to the outdoor unit (or RB unit) is easy.

(6) Install the unit where the connection pipe can be easily installed.

(7) Install the unit where the drain pipe can be easily installed.

(8) Install the unit where noise and vibrations are not amplified.

(9) Take servicing, etc., into consideration and leave the spaces. Also install the unit where the filter can be removed.

Discharge direction setting

• The discharge direction can be selected as shown below.

4 direction 3 direction

*1: Please ensure sufficient service access during installation.

4 in (100 mm) or more (*1)

* Select the most appropriate airflow direction from 3 or 4 directions according to the shape of the room and the installation position.

* When changing the number of outlets, we recommend using the optional AIR OUTLET

SHUTTER PLATE KIT to close the outlet.

* For the specific closing pattern, please refer to the attached AIR OUTLET SHUTTER

PLATE KIT’S MANUAL. (Do so before installing the cassette grille as it will be installed on the body.)

3.3. Installing the unit

WARNING

Install the air conditioner in a location which can withstand a load of at least 5 times the weight of the main unit and which will not amplify sound or vibration. If the installation location is not strong enough, the indoor unit may fall and cause injuries.

If the job is done with the panel frame only, there is a risk that the unit will come loose.

Please take care.

3.3.1 Position the ceiling hole and hanging bolts

(1) Positions of the ceiling opening, hanging bolt pitch, piping and ducts.

• Ceiling opening and hanging bolt pitch. [unit: in (mm)]

37-3/8 (950)

(Cassette grille)

13/16 to 1-3/4

(20 to 45)

33-7/8 to35-13/16

(860 to 910) (Ceiling opening)

33-1/16 (840)

(Indoor unit)

13/16 to 1-3/4

(20 to 45)

31-5/16 (796)

(Hanging bolt pitch)

5-1/8

(130)

7-7/8

(200)

1-15/16

(50)

Model

AUUB 18/24/30

AUUB 36/48

Dimension [in (mm)]

A B

9-11/16

(246)

11-5/16

(288)

10-1/16

(256)

11-3/4

(298)

Ceiling height is as shown in the figure.

11 (256) or more (AUUB 18/24/30)

12 (298) or more (AUUB 36/48)

Strong and durable ceiling

Unit: in (mm)

60 (1,500) or more

119 (3,000) or more

70 (1,800) to H

39 (1,000) or more

Obstruction

Floor

H: Maximum height from floor to ceiling

H [in (mm)]

Function setting

Standard mode

High Ceiling mode

AUUB 18/24/30

118 (3,000)

137 (3,500)

AUUB 36/48

125 (3,200)

165 (4,200)

* Be sure to make the function settings with the remote controller according to the installed ceiling height.

• Refrigerant piping and drain piping positions. [unit: in (mm)]

Drain pipe

Drain pipe

(Connect the attached drain hose)

Liquid pipe

13-7/16 (342) 11-9/16 (293)

Gas pipe

1-3/4 (45)

En-3

(2) Setting the positions of hanging bolt and ceiling opening.

• Use an installation template (packaging top surface) to set the positions of the hanging bolt and ceiling opening and drill holes.

• Select a strong structure for the hanging location.

• If necessary, reinforce the hanging bolt with quakeproof columnar support material to prevent shaking.

• Use hanging bolts of M8 to M10.

3.3.2 Hanging preparations

• Firmly fasten the hanging bolts as shown in the figure or by another method.

• Install the hanging bolts at a place where they would be capable of holding a weight of at least 110 lbf

(490 N) per bolt.

Hole-in anchor

Hole-in plug Concrete Insert

• Thicknesses of copper pipes used with R410A are as shown in the table.

• Never use copper pipes thinner than those indicated in the table even if they are available on the market.

Thicknesses of Annealed Copper Pipes (R410A)

Pipe outside diameter [in (mm)]

1/4 (6.35)

3/8 (9.52)

1/2 (12.70)

5/8 (15.88)

3/4 (19.05)

Thickness [in (mm)]

0.032 (0.80)

0.032 (0.80)

0.032 (0.80)

0.039 (1.00)

0.039 (1.20)

Hanging bolt M10

(locally purchased)

3.3.3 Body installation

WARNING

Perform final tightening by tightening the double nut firmly.

Be sure to install the body horizontally and adjust the height below the body and the ceiling surface properly.

(1) Install the attached washer and nut (prepared on site) onto the hanging bolt.

(2) Hook the body onto the hanging bolt.

(3) Adjust the dimensions of the ceiling surface from the body.

After installing the cassette grille, you can make fine adjustment of the height of the body. For details, refer to the installation manual of the cassette grille.

Hanging bolt

(locally purchased)

[Unit: in (mm)]

Washer

(Accessories)

Nut A

(locally purchased)

1-3/16 (30) or more

After installing the body, tighten the nuts.

Washer

(Accessories)

Nut B (Double Nut)

(locally purchased)

3/8 to 9/16 (10 to 15)

3.3.4 Leveling

• Using a level, or vinyl hose filled with water, fine adjust so that the body is level.

• Inclined installation so as the drain pipe side is higher may cause a malfunction of the float switch, and may cause water leakage.

Drain pipe

Vinyl hoses

CAUTION

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with refrigerant R410A models. Also, when storing the piping, securely seal the openings by pinching, taping, etc.

While welding the pipes, be sure to blow dry nitrogen gas through them.

4.1. Selecting the pipe material

CAUTION

Do not use existing pipes from another refrigeration system or refrigerant.

Use pipes that have clean external and internal sides without any contamination which may cause trouble during use, such as sulfur, oxide, dust, cutting waste, oil, or water.

It is necessary to use seamless copper pipes.

Material : Phosphor deoxidized seamless copper pipes

It is desirable that the amount of residual oil is less than 0.04 oz/100 ft (40 mg/10 m).

Do not use copper pipes that have a collapsed, deformed, or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

Improper pipe selection will degrade performance. As an air conditioner using R410A incurs pressure higher than when using conventional (R22) refrigerant, it is necessary to choose adequate materials.

CAUTION

Refer to the installation manual for the outdoor unit for description of allowable pipe length and height difference.

Use pipe with water-resistant heat insulation.

CAUTION

Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks.

Use heat insulation with heat resistance above 248 °F (120 °C). (Reverse cycle model only)

In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70 %, install heat insulation around the refrigerant piping. If the expected humidity level is 70 to 80 %, use heat insulation that is 9/16 in (15 mm) or thicker and if the expected humidity exceeds 80 %, use heat insulation that is 13/16 in

(20 mm) or thicker. If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation. In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 68 °F (20 °C)).

4.3. Flare connection (pipe connection)

WARNING

Tighten the flare nuts with a torque wrench using the specified tightening method. Otherwise, the flare nuts could break after a prolonged period, causing refrigerant to leak and generate hazardous gas if the refrigerant comes into contact with a flame.

4.3.1 Flaring

Use special flare tool exclusive for R410A.

(1) Cut the connection pipe to the necessary length with a pipe cutter.

(2) Hold the pipe downward so that cuttings will not enter the pipe and remove any burrs.

(3) Insert the flare nut (always use the flare nut attached to the indoor and outdoor units

(or RB unit) respectively) onto the pipe and perform the flare processing with a flare tool. Use the special R410A flare tool. Leakage of refrigerant may result if other flare nuts are used.

(4) Protect the pipes by pinching them or with tape to prevent dust, dirt, or water from entering the pipes.

B

Check if [L] is flared uniformly and is not cracked or scratched.

Die

A

Pipe

L

Pipe outside diameter

[in (mm)]

Dimension A [in (mm)]

Flare tool for R410A, clutch type

Dimension B 0 (0)

-0.015 (-0.4)

[in (mm)]

1/4 (6.35)

3/8 (9.52)

1/2 (12.70)

5/8 (15.88)

3/4 (19.05)

0 to 0.020

(0 to 0.5)

3/8 (9.1)

1/2 (13.2)

5/8 (16.6)

3/4 (19.7)

15/16 (24.0)

When using conventional (R22) flare tools to flare R410A pipes, the dimension A should be approximately 0.020 in (0.5 mm) more than indicated in the table (for flaring with

R410A flare tools) to achieve the specified flaring. Use a thickness gauge to measure the dimension A. It is recommended that a R410A flaring tool is used.

Width across flats

Pipe outside diameter

[in (mm)]

Width across flats of Flare nut [in (mm)]

1/4 (6.35)

3/8 (9.52)

11/16 (17)

7/8 (22)

1/2 (12.70) 1 (26)

5/8 (15.88) 1-1/8 (29)

3/4 (19.05) 1-7/16 (36)

En-4

4.3.2 Bending pipes

• If pipes are shaped by hand, be careful not to collapse them.

• Do not bend the pipes in an angle more than 90°.

• When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or stretch them anymore.

• Do not bend or stretch the pipes more than 3 times.

CAUTION

To prevent breaking of the pipe, avoid sharp bends.

If the pipe is bent repeatedly at the same place, it will break.

4.3.3 Pipe connection

CAUTION

Be sure to install the pipe against the port on the indoor unit and the outdoor unit correctly. If the centering is improper, the flare nut cannot tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection pipe.

Do not use mineral oil on flared part. Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.

Hold the torque wrench at its grip, keeping it at a right angle with the pipe, in order to tighten the flare nut correctly.

(1) Detach the caps and plugs from the pipes.

(2) Center the pipe against the port on the indoor unit, and then turn the flare nut by hand.

Connection pipe

(Liquid)

Connection pipe (Gas)

(3) When the flare nut is tightened properly by your hand, hold the body side coupling with a separate spanner, then tighten with a torque wrench. (See the table below for the flare nut tightening torques.)

Torque wrench

Tighten with 2 wrenches.

Holding wrench

Flare nut

Flare nut [in (mm)]

1/4 (6.35) dia.

3/8 (9.52) dia.

1/2 (12.70) dia.

5/8 (15.88) dia.

3/4 (19.05) dia.

Indoor unit pipe (Body side) Connection pipe

Tightening torque [lbf·ft (N·m)]

11.8 to 13.3 (16 to 18)

23.6 to 31.0 (32 to 42)

36.1 to 45.0 (49 to 61)

46.5 to 55.3 (63 to 75)

66.4 to 81.1 (90 to 110)

4.4. Installing heat insulation

CAUTION

After checking for gas leaks (refer to the Installation Manual of the outdoor unit), perform this section.

Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do so may cause water leaks.

After checking for gas leaks, insulate by wrapping insulation around the 2 parts (gas and liquid) of the indoor unit coupling, using the Coupler heat insulation.

After installing the Coupler heat insulation, wrap both ends with vinyl tape so that there is no gap.

Cable tie (Large)

(Accessories)


(Accessories)

No gap

Body

Be sure to overlap the insulation


CAUTION

Must fit tightly against body without any gap.

5. INSTALLING DRAIN PIPES

WARNING

Do not insert the drain piping into the sewer where sulfurous gas occurs. (Heat exchange erosion may occur)

Insulate the parts properly so that water will not drip from the connection parts.

Check for proper drainage after the construction by using the visible portion of transparent drain port and the drain piping final outlet on the body.

CAUTION

Do not apply adhesive agent on the drain port of the body. (Use the attached drain hose and connect the drain piping)

• Install the drain pipe with downward gradient (1/100 to 1/50) and so there are no rises or traps in the pipe. Unsmooth draining caused by accumulated water flow in the pipe may cause clogged drain.

• Use general hard polyvinyl chloride pipe (Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]).

• When the pipe is long, install supporters.

• Do not perform air bleeding. Drainage may be blown out.

• If it is impossible to have sufficient gradient of pipe, perform drain lift-up.

Drain pipe

Pipe size

(Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.])

Hanging fittings 60 to 78 in (1.5 to 2.0 m)

Ø 3/4 in [I.D.]; Ø 1-1/16 in [O.D.]

Downward gradient 1/100 to 1/50

PROHIBITED:

Rise Trap Air bleeding

When lifting up drain:

• Height of inclined pipe should be less than 33 in (850 mm) from the ceiling. A rise dimension over this range will cause leakage.

• Lift up the pipe vertically at the position of 11 in (300 mm) or less from the unit.

11 in (300 mm) or less

Downward gradient

1/100 to 1/50

Ø 3/4 in [I.D.];

Ø 1-1/16 in [O.D.] local arrangement 33 in (850 mm) or less

Horizontal or upward gradient

33 in (850 mm) or less

Ø 1 in [I.D.]; Ø 1-5/16 in [O.D.] or more

Downward gradient 1/100 to 1/50

Working procedure

(1) Install the attached drain hose to the drain port of the body. Install the hose band from the top of the hose within the graphic display area. Secure firmly with the hose band.

(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe VP25) which is prepared on site or elbow socket. (Apply color adhesive agent evenly until the gauge line and seal)

(3) Check the drainage. (See separate diagram)

(4) Install the heat insulation.

(5) Use the attached heat insulation to insulate the drain port and band parts of the body.

En-5

Install the knob faces upward

Attached drain hose heat insulation

(Accessories)

(a) Top view

Attached hose band

(Accessories)

Locally arranged vinyl pipe

Attached drain hose

(Accessories)

Attached heat insulation

(Accessories)

Hose Band

(b) Side view

Ø 3/4 in [I.D.];

Ø 1-1/16 in [O.D.]

Applying area of adhesive

1-3/8 in (35 mm)

Securely connect the connection cables to the terminal board. In addition, secure the cables with wiring holders. Improper connections, either in the wiring or at the ends of the wiring, can cause a malfunction, electric shock, or fire.

Always fasten the outside covering of the connection cable with the cable clamp. (If the insulator is chafed, electric discharge may occur.)

We suggest installing GFEB breakers or follow local electrical code. When installing this system, install using ground fault equipment breakers (GFEB) to reduce the risk of leaking current which result in electric shock or potential fire.

Always connect the earth (ground) cable.

Improper earthing (grounding) work can cause electric shocks.

Install the remote controller cables so as not to be direct touched with your hand.

Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.

Connect the connection cable firmly to the terminal board. Imperfect installation may cause a fire.

If the supply cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

CAUTION

Earth (Ground) the unit.

Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a telephone earth (ground) cable.

Improper earthing (grounding) may cause electric shock.

Do not connect power supply cables to the transmission or remote controller terminals, as this will damage the product.

Never bundle the power supply cable and transmission cable, remote control cable together. Separate these cable by 2 in (50 mm) or more. Bundling these cables together will cause miss operation or breakdown.

When handling PCB, static electricity charged in the body may cause malfunction of the

PCB. Follow the cautions below:

• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.

• Cut power (breaker) off.

• Touch metal part of the indoor units for more than 10 seconds to discharge static electricity charged in the body.

• Do not touch terminals of parts and patterns implemented on PCB.

3/16 to 3/8 in

(5 to 10 mm)

13/16 in (20 mm)

(c) Top view

Gauge line

3/16 in (4 mm) or less

(d) Hose opening view

Wind the attached heat insulation around the hose band

Make sure the alignment is on top

Make sure there are no gaps

NOTE: Check for drainage

Pour about 1 liter of water from the position shown in the diagram or from the airflow outlet to the dew tray. Check for any abnormalities such as strange noises and whether the drain pump functions normally.

WARNING

Electrical work must be performed in accordance with this Manual by a person certified under the national or regional regulations. Be sure to use a dedicated circuit for the unit.

An insufficient power supply circuit or improperly performed electrical work can cause serious accidents such as electric shock or fire.

Before starting work, check that power is not being supplied to the all units.

For wiring, use the prescribed type of cables, connect them securely, making sure that there are no external forces of the cables applied to the terminal connections.

Improperly connected or secured cables can cause serious accidents such as overheating the terminals, electric shock, or fire.

Securely install the electrical box cover on the unit.

An improperly installed electrical box cover can cause serious accidents such as electric shock or fire through exposure to dust or water.

Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit could result.

Use the included connection cables and power cables or ones specified by the manufacturer. Improper connections, insufficient insulation, or exceeding the allowable current can cause electric shock or fire.

Do not modify the power cables, use extension cables, or use any branches in the wiring. Improper connections, insufficient insulation, or exceeding the allowable current can cause electric shock or fire.

Match the terminal block numbers and connection cable colors with those of the outdoor unit (or RB unit). Erroneous wiring may cause burning of the electric parts.

• Select the power cable type and size in accordance with relevant local and national regulations.

Voltage rating

Operating range

208/230 V

187 to 253 V

• Specifications for local wiring power cord and branch wiring are in compliance with local code

• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire diameter when the wire length is long.

Breaker should be installed at every refrigerant system. Do not use a breaker in a different refrigerant system.

Refer to the table for the breaker specifications of each installation condition. Perform the power crossover wiring within the range of the same refrigerant system. When the crossover wiring is done, make a connection for indoor units to satisfy conditions A and B below.

A. Current breaker requirements

Model MCA

MAX. CKT. BKR

(Fuse capacity)

• MCA: Minimum Circuit Ampacity

• MAX. CKT. BKR : Maximum Circuit

Breaker

AUUB18TLAV1 0.33 A

AUUB24TLAV1 0.40 A

AUUB30TLAV1 0.68 A

AUUB36TLAV1 0.78 A

AUUB48TLAV1 1.40 A

15 A

When the power crossover wiring is done, make it so that the total of the

MCA of the connected RB units and indoor units does not exceed the 11 A.

For RB unit MCA, refer to the RB unit installation manual.

If the capacity of connected RB units and indoor units exceeds the upper limit, either add breakers or use a breaker with a greater capacity.

B. Earth leakage breaker requirements

Breaker capacity

30 mA, 0.1 sec or less

100 mA, 0.1 sec or less

Maximum connectable “indoor units” or “indoor units +

RB units” (*1)

36 or less

37 to 121 (*2)

*1: Heat pump type: indoor units,

Heat recovery type: indoor units and RB units.

*2: If the 100 mA capacity breaker is not provided, split the quantity of the indoor units into small groups of 9 units or less and provide a breaker with capacity of 30 mA for each group.

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6.1.1 Cable speci

Transmission cable

Remote controller cable

(2-wire type)

Outdoor unit or RB unit *1

Transmission

Transmission

Power supply fi

cations

Cable size

22 AWG

(0.33 mm²)

22 AWG to 16 AWG

(0.33 to 1.25 mm²)

18AWG

Cable type

LEVEL 4 (NEMA) non-polar

2 core, twisted pair solid core diameter 0.026 in (0.65mm)

Remarks

LONWORKS ® compatible cable

Sheathed PVC cable

Thermostat cable 2 core

Non polar 2 core, twisted pair

Use sheathed non twisted pair cable

Indoor unit

Remote

control

Breaker 1: Ground Fault Equipment

Breaker (GFEB)

Breaker 2: Maximum Circuit Breaker

(MAX. CKT. BKR)

Indoor unit Indoor unit

Strip 1 in

(25 mm)

Loop

Cable

Screw with special washer

Cable end (Loop)


Cable end (Loop)

Terminal block

Do not apply branch wiring. It may result electric shock or fire.

Cable

WARNING

When using solid core cables, do not use the ring terminal. If you use the solid core cables with the ring terminal, the ring terminal's pressure bonding may malfunction and cause the cables to abnormally heat up.

B. For strand wiring

(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to the terminal block.

(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the cables do not come loose.

(3) Use the specified cables, connect them securely, and fasten them so that there is no stress placed on the terminals.

(4) Use an appropriate screwdriver to tighten the terminal screws. Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the screws from being properly tightened.

(5) Do not tighten the terminal screws too much, otherwise, the screws may break.

(6) See the table for the terminal screw tightening torques.

(7) Please do not fix 2 power supply cables with 1 screw.

Strip 3/8 in

(10 mm)

Ring terminal

Breaker 2

Breaker 2 Breaker 2

Breaker 1

*2

Remote controller

(Master)

Breaker 1 Breaker 1

*2

Remote controller

(Slave)

*2

Remote controller

Power supply

*1: When connecting to the Heat Recovery System, refer to the installation manual of the

RB unit.

*2: The 3-wire type remote controller is not used.

(Crossover wiring of power supply)

Indoor unit

Power supply

Indoor unit

Power supply

Indoor unit

Power supply

Pull box

Breaker 2

Breaker 1

Pull box

Power supply

• Before attaching the cable to terminal block.

6.3.1 Power supply cable

7-7/8 in (200 mm)

: Disconnect switch

Conduit connector

Earth (ground) wire 8-1/4 in (210 mm)

A. For solid core wiring

(1) To connect the electrical terminal, follow the below diagram and connect after looping it around the end of the cable.

(2) Use the specified cables, connect them securely, and fasten them so that there is no stress placed on the terminals.

(3) Use an appropriate screwdriver to tighten the terminal screws.

Do not use a screwdriver that is too small, otherwise, the screw heads may be damaged and prevent the screws from being properly tightened.

(4) Do not tighten the terminal screws too much, otherwise, the screws may break.

(5) See the table for the terminal screw tightening torques.

(6) Please do not fix 2 power supply cables with 1 screw.

Sleeve

Cable


Ring terminal


Ring terminal

Terminal block

Cable

WARNING

Use ring terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage inside the unit.

Terminal number

M3.5 screw (Power supply/L, N, GND)

Tightening torque

11 to 16 lbf·in (1.2 to 1.8 N·m)

6.3.2 Transmission and Remote controller cable

Shield cable

(no film)

Transmission cable

1-3/16 in (30 mm)

1-3/4 in

(45 mm)

Remote controller cable

1-3/16 in (30 mm)

• Connect remote controller and transmission cables as shown in figure below.

GOOD PROHIBITED

Different diameter Connect to 1 side

WARNING

Tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage inside the unit.

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Terminal number

M3 screw (Transmission /X1, X2)

(Remote controller /Y1, Y2)

Tightening torque

4.4 to 5.3 Ibf·in (0.5 to 0.6 N·m)

CAUTION

To peel the film from the lead cable, use a dedicated tool that will not damage the conductor cable.

When installing a screw on the terminal block, do not cut the cable by overtightening the screw. On the other hand, an undertightened screw can cause faulty contact, which will lead to a communication failure.

6.4. Connection of wiring

(1) Remove the control box cover and install each connection cable.

(2) Please firmly tighten Connection cable and Remote controller cable with the attached cable tie.

X1, X2: Transmission cable

Cut

Push mount cable tie (accessories)

Y1, Y2: Remote controller cable

(do not use Y3.)

Attach the conduit connector on the wiring connecting port.

(The grommet edging and the connection cable clamp are not used.)

Conduit connector

Lock nut

Wiring connecting port (for transmission cable and remote controller cable)

Wiring connecting port

(for power supply cable)

(3) Replace the Control box cover and Wiring cover.

Securely tighten the screws.

Cure the wiring connecting port and remote controller connecting port with putty or heat insulation so that insects or dust will not enter the unit.

Lock nut

L1

Wiring cover

Control box cover

L2

(N)

1

2

3

Earth

(ground)

L1

L2

(N)

Conduit connector

(L1, L2 (N): Power supply cable)

Do not bundle the remote controller cable, or wire the remote controller cable in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply cable. It may cause erroneous operation.

(4) Fix the conduit with the supporters as shown below.

Indoor unit

CAUTION

Conduit (Power supply cable)

Supporter

30 in

(756 mm) or less

54 in

(1,361 mm) or less

54 in

(1,361 mm) or less

54 in

(1,361 mm) or less

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6.5. Optional parts wiring

6.5.1 Connector and DIP switch position

Apply voltage terminal

CNA01 CNA03

Output terminal

CNB01

SET 2

Controller PCB

CNA02 CNA04

Dry contact terminal

ON

OFF

SW1 SW3

SW2 SW4

DIP switch

(SET 2)

Name

CNA01

CNA03

CNA02

CNA04

DIP switch SET 2 (SW2)

CNB01

Apply voltage terminal

Application

For external input

Dry contact terminal

Input signal type switching

Output terminal For external output

6.5.2 Connection methods

Wire modification

(1) Remove insulation from wire attached to wire kit connector.

(2) Remove insulation from field supplied cable. Use crimp type insulated butt connector to join field cable and wire kit wire.

(3) Connect the wire with connecting wire with solder.

IMPORTANT:

Be sure to insulate the connection between the wires.

Locally purchased

Wire kit connector

(optional parts)

Solder and insulate the connected parts.

Connection terminals and wiring arrangement

In following figure, all the possible connectors are connected for description.

In actual installation, you cannot connect all the connectors at once.

Cable hooks

1

2

3

L1

●

Apply voltage terminal ([CNA01], [CNA03])

When a power supply must be provided at the input device you want to connect, use the

Apply voltage terminal ([CNA01], [CNA03]).

DC power supply

12 to 24V

*1

P.C.B

*a

Load resistance

CNA01

*b

*a

Load resistance

*a

Load resistance

CNA03

Connected unit

*1: Make the power supply DC 12 to 24 V. Select a power supply capacity with an ample surplus for the connected load.

Do not impress a voltage exceeding 24 V across pins 1-2, and 1-3.

*a: The allowable current is DC 5 mA to 10 mA. (Recommended: DC 5 mA)

Provide a load resistance such that the current becomes DC 10 mA or less.

Select very low current use contacts (usable at DC 12 V, DC 1 mA or less).

*b: The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.

When connected to Apply voltage terminals of multiple indoor units with a connected unit, be sure to make a branch outside the indoor unit using a pull box, etc. as shown on below example.

DC power supply

12 to 24V P.C.B

Load resistance

CNA01

Load resistance

Connected unit

P.C.B

CNA01

P.C.B

CNA01

CNA01 CNA03

CNA02

CNB01

CNA04

Cable clamp

6.6. External input and external output (Optional parts)

6.6.1 External input

• Indoor unit can be Operation/Stop, Emergency stop or Forced stop by using indoor unit

PCB CNA01 or CNA02.

• “Operation/Stop” mode, “Emergency stop” mode or “Forced stop” mode can be selected with function setting of indoor unit.

• Indoor unit can be Forced thermostat off by using indoor unit PCB CNA03 or CNA04.

• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 492 ft (150 m).

• Use an external input and output cable with appropriate external dimension, depending on the number of cables to be installed.

• The wire connection should be separate from the power cable line.

Input select

Use either one of these types of terminal according to the application. (Both types of terminals cannot be used simultaneously.)

●

Dry contact terminal ([CNA02], [CNA04])

When a power supply is unnecessary at the input device you want to connect, use the Dry contact terminal ([CNA02], [CNA04]).

P.C.B

*c

Ch 1

*c

Ch 2

CNA02

GND

*d

*c

Ch 3

CNA04

Connected unit

*c: Select very low current use contacts (usable at DC 12 V, DC 1 mA or less).

*d: The wiring is different from Apply voltage terminals. Be sufficiently careful when wiring.

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When connected to Dry contact terminals of multiple indoor units with a connected unit, insulate each indoor unit with relay, etc. as shown on below example.

P.C.B

K1

K4

CNA02

K2

K5

P.C.B

CNA02

P.C.B

K3

Input device 1

K6

CNA02

Input device 2

K1 - K6: Relay

(Device for DC Current)

NOTE :

When connected to multiple indoor units directly, it will cause breakdown.

Operation behavior

●

Input signal type

The input signal type can be selected.

It is switched by DIP switch on the indoor unit PCB.

DIP switch [Set 2 SW2] Input signal type

OFF (Factory setting)

ON

Edge

Pulse

Edge

Pulse

The width of pulse must be longer than 200 msec.

●

When function setting is “Operation/Stop” mode.

[In the case of “Edge” input]

Connector Input signal

Ch1 of CNA01 or CNA02

OFF → ON

ON → OFF

Command

Operation

Stop

[In the case of “Pulse” input]

Connector

CNA01 or CNA02

Ch1

Ch2

Input signal

OFF → ON

OFF → ON

Command

Operation

Stop

* The last command has priority.

* The indoor units within the same remote controller group operates in the same mode.

●

When function setting is “Emergency stop” mode.

[In the case of “Edge” input]



OFF → ON

ON → OFF

Command

Emergency stop

Normal


Connector

CNA01 or CNA02

Ch1

Ch2

Input signal

OFF → ON

OFF → ON

Emergency stop

Normal

Command

* All indoor units of same refrigerant system stops when Emergency stop operates.

●

When function setting is “Forced stop” mode.

[In the case of “Edge” input]



OFF → ON

ON → OFF


Connector

CNA01 or CNA02

Ch1

Ch2

Input signal

OFF → ON

OFF → ON

Command

Forced stop

Normal

Command

Forced stop

Normal

* When the forced stop is triggered, indoor unit stops and Operation/Stop operation by a remote controller is restricted.

* When forced stop function is used with forming a remote controller group, connect the same equipment to each indoor unit within the group.

• Selection method of functions

“Operation/Stop” mode or “Emergency stop” mode, “Forced stop” mode can be selected with function setting of indoor unit.

●

Forced thermostat off function

[“Edge” input only]



OFF → ON

ON → OFF

Command

Thermostat off

Normal

6.6.2 External output

• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25m).

• Use an external input and output cable with appropriate external dimension, depending on the number of cables to be installed.

• Output voltage: Hi DC12V±2V, Lo 0V.

• Permissible current: 50mA

Output select

●

When indicator etc. are connected directly

P.C.B

Indicator 1

Indicator 2

Indicator 3

CNB

01

Indicator 4 connected unit

●

When connecting with unit equipped with a power supply

P.C.B

Connected device 1

Connected device 2

Connected device 3

Connected device 4

CNB

01 connected unit Relay (Locally purchased)

Operation behavior

* If function setting "60" is set to "00"

Connector Output voltage Status

CNB01

External output 1

Pins 1-2

External output 2

Pins 1-3

External output 3

Pins 1-4

External output 4

Pins 1-5

0V

DC 12 V

0V

DC 12 V

0V

DC 12 V

0V

DC 12 V

Stop

Operation

Normal

Error

Indoor unit fan stop

Indoor unit fan operation

External heater OFF

External heater ON

●

Indoor unit fan setting for external heater

Fan setting when turning ON output to the connected external heater can be set by changing Dip switch on PC board.

Dip switch

[SET2 SW3]

Fan setting when

ON is output to the external heater

Explanation

OFF

(Factory setting)

ON

OFF

ON

For the fan setting details, see the

Design & Technical Manual.

There are 3 methods for address setting by FIELD SETTING as follows.

Please set by either of the methods.

Each setting method is described in below (1) to (3).

(1) IU AD, REF AD SW settings: This section (7.1. Setting the address)

(2) Remote controller settings: Refer to the wired or wireless remote controller manual for detailed setting information. (Set IU AD, REF AD

SW to 0)

(3) Automatic address settings: Refer to the outdoor unit manual for detailed setting information. (Set IU AD, REF AD SW to 0)

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CAUTION

Use an insulated screwdriver to set the dip switches.

• Open the cover referring to the figure below. Close and fix the cover after addressing setting.

For indoor unit address

For refrigerant circuit address

(1) Loosen the screw.

IU AD REF AD RC AD

×10 ×1 ×10 ×1

SET3 SET4

• Custom code setting for indoor unit

Set the DIP switch SET3 SW1, 2, referring to the figure and table below.

ON

DIP switch “SET3”

OFF

SW

1

SW

2

SW

3

SW

4

IU AD REF AD

×10 ×1 ×10 ×1

RC AD

SET3 SET4

DIP switch “SET3”

DIP switch

SET3

SW1

SW2

Custom code

A (Factory setting)

B C

OFF

OFF

ON

OFF

OFF

ON

D

ON

ON

(2) Slide the cover and open it.

7.1.1 Indoor unit address

• Rotary switch (IU AD × 1)...Factory setting “0”


When connecting multiple indoor units to 1 refrigerant system, set the address at IU AD

SW as shown in the Table A.

7.1.2 Refrigerant circuit address



In the case of multiple refrigerant systems, set REF AD SW as shown in the Table A for each refrigerant system.

Set to the same refrigerant circuit address as the outdoor unit.

Setting Setting range Type of switch

Indoor unit address 0 to 63

Setting example 2

IU AD × 10 IU AD × 1

Refrigerant circuit address

0 to 99

Setting example 63

REF AD × 10 REF AD × 1

• If working in an environment where the wireless remote controller can be used, the addresses can also be set using the remote controller.

• If setting the addresses using the wireless remote controller, set the indoor unit address and refrigerant circuit address to “00”.

(For information on setting using the wireless remote controller.)

Table A

Address

Refrigerant circuit

7

8

5

6

9

2

3

0

1

4

10

11

12

.

.

.

99

Rotary switch setting

REF AD SW

× 10

0

0

0

0

0

0

0

0

0

0

1

1

.

.

1

.

× 1

7

8

5

6

9

2

3

0

1

4

0

1

.

.

2

.

9 9

Address

Indoor unit

7

8

5

6

9

2

3

0

1

4

10

11

12

.

.

.

63

Rotary switch setting

IU AD SW

× 10

0

0

0

0

0

0

0

0

0

0

1

1

.

.

1

.

× 1

7

8

5

6

9

2

3

0

1

4

0

1

.

.

2

.

6 3

Do not set the indoor unit address (IU AD SW) at 64 to 99.

It may result in failure.

7.2. Custom code setting

• Selecting the custom code prevents the indoor unit mix-up. (figure below)

(Up to 4 codes can be set.)

• Perform the setting for both the indoor unit and the remote controller.

Confusion Code change

A B C D

Indoor unit

Remote controller A B C D

• FUNCTION SETTING can be performed with the wired or wireless remote controller.

(The remote controller is optional equipment)

• Refer to the wired or wireless remote controller manual for detailed setting information.

• Refer to “7.1. Setting the address” for indoor unit address and refrigerant circuit address settings.

• Turn the power of the indoor unit ON before starting the setting.

* Turning on the power to the indoor units initializes EEV, so make sure the piping air tight test and vacuuming have been conducted before turning on the power.

* Also check again to make sure no wiring mistakes were made before turning on the power.

Function details

Function

Function number

Setting number Default Details

Filter indicator interval

11

00 Standard

01 Longer

02 Shorter

Adjust the filter cleaning interval notification. If the notification is too early, change to setting

01. If the notification is too late, change to setting 02.

Filter indicator action

13

00 Enable

01 Disable

02

Display only on central remote controller

00 Standard

Enable or disable the filter indicator. Setting 02 is for use with a central remote controller.

Ceiling airflow

Vertical airflow direction

Cool air temperature trigger

Heat air temperature trigger

Auto restart

20

23

30

31

40

01 High Ceiling

00 Standard

01 Adjust

00 Standard

01 Adjust (1)

02 Adjust (2)

00 Standard

01 Adjust (1)

02 Adjust (2)

03 Adjust (3)

00 Enable

01 Disable

Regulate the airflow according to the needs of the installation location. When set to 01, the air flow will be stronger. (Cassette type only)

Adjust the vertical airflow direction. All airflow direction louvers are adjusted together.

Adjust the cool air trigger temperature. To lower the trigger temperature, use setting 01. To raise the trigger temperature, use setting 02.

Adjust the heat air trigger temperature. To lower the trigger temperature by 6 degrees C, use setting 01. To lower the trigger temperature by 4 degrees C, use setting 02. To raise the trigger temperature, use setting 03.

Enable or disable automatic system restart after a power outage.

Cool Air

Prevention

External control

43

46

00 Super low

01

Follow the setting on the remote controller

00 Start/Stop

01

Emergency stop

02 Forced stop

Restrain the cold airflow with making the airflow lower when starting heating operation. To correspond to the ventilation, set to 01.

Allow an external controller to start or stop the system, or to perform an emergency stop.

* If an emergency stop is performed from an external controller, all refrigerant systems will be disabled.

* If forced stop is set, indoor unit stops by the input to the external input terminals, and

Start/Stop by a remote controller is restricted.

Error report target

47

00 All

01

Display only on central remote controller

Change the target for reporting errors. Errors can either be reported in all locations, or only on the central remote controller.

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Function

Fan setting when cooling thermostat

OFF

Switching functions for external inputs and external outputs terminals

Control switching of external heaters

Operating temperature switching of external heaters

Auto mode type

Deadband value

(Forbidden)

Function number

Setting number Default

49

00

Follow the setting on the remote controller

01 Stop

Details

When set to 01, the fan stops when the thermostat is OFF in cooling operation. Connection of the wired remote controller (2-wire type or 3-wire type) and switching its thermistor are necessary.

60

61

62

68

00 Mode 0

01 Mode 1

02 Mode 2

03 Mode 3

04 Mode 4

05 Mode 5

06 Mode 6

07 Mode 7

08 Mode 8

00

01

02

03

04

Auxiliary heater control 1

Auxiliary heater control 2

Heat pump prohibition control

Heater selection control using outdoor temperature 1

Heater selection control using outdoor temperature 2

00 Setting 0

01 Setting 1

02 Setting 2

03 Setting 3

04 Setting 4

05 Setting 5

00

Single setpoint auto mode

(traditional)

01

Dual setpoint auto mode

• Set this function when connecting the VRF system to a ventilator, economizer, humidi fi other external device.

• Sets the temperature conditions when the external heater is ON.

• For the temperature conditions, see "Temperature conditions when the external heater is ON".

For a more detailed explanation, see the Design & Technical

Manual.

Switch the setting method of auto mode to single or dual

(cooling/heating).

For heat pump systems, it is necessary to set the master indoor unit (by wired remote controller).

er, or

• The connection terminal functions can be changed depending on the type of external device.

For details of the connection terminal functions, see the Design

& Technical Manual.

Sets the control method for the external heater being used. For details of the control method, see the Design & Technical Manual.

69

70

00 0°F (0°C)

01 1°F (0.5°C)

02 2°F (1.0°C)

03 3°F (1.5°C)

04 4°F (2.0°C)

05 5°F (2.5°C)

06 6°F (3.0°C)

07 7°F (3.5°C)

08 8°F (4.0°C)

09 9°F (4.5°C)

00

Choose the minimum temperature between cooling and heating settings (deadband) for Dual setpoint auto mode (set in No. 68).

Temperature conditions when the external heater is ON

Temperature (t) when the external heater is ON= Room temperature - set temperature

03

04

05

00

01

02

00 01 t < -5.4°F (-3°C)

Set value of function: 61

02 t ≤

03

-0.9°F (-0.5°C) t < -3.6°F (-2°C) t < -3.6°F (-2°C) t ≤ -1.8°F (-1°C) t ≤ -3.6°F (-2°C) t < -5.4°F (-3°C) t < -7.2°F (-4°C) t < -9.0°F (-5°C) t t t

≤

≤

≤

-5.4°F (-3°C)

-7.2°F (-4°C)

-9.0°F (-5°C)

04

8. CASSETTE GRILLE INSTALLATION

• Operate according to the installation Manual CASSETTE GRILLE.

• Be sure to confirm there is no gap between the cassette grille and main unit after installing the CASSETTE GRILLE.

9.1. Test run using Outdoor unit (PCB)

Refer to the Installation Manual for the outdoor unit if the PCB for the outdoor unit is to be used for the test run.

9.2. Test run using remote controller

• Refer to the Installation Manual for the remote controller to perform the test run using the remote controller.

• When the air conditioner is being test run, the OPERATION and TIMER indicator lamp flash slowly at the same time.

10. CHECK LIST

Pay special attention to the check items below when installing the indoor unit(s). After installation is complete, be sure to check the following check items again.

Check items If not performed correctly

Check box

Has the indoor unit been installed correctly?

Has there been a check for gas leaks

(refrigerant pipes)?

Has heat insulation work been completed?

Does water drain easily from the indoor units?

Is the voltage of the power source the same as that indicated on the label on the indoor unit?

Are the wires and pipes all connected completely?

Is the indoor unit earthed (grounded)?

Is the connection cable the specified thickness?

Are the inlets and outlets free of any obstacles?

Does start and stop air conditioner operation by remote control unit or external device?

After installation is completed, has the proper operation and handling been explained to the user?

Vibration, noise, indoor unit may drop

No cooling, No heating

Water leakage

Water leakage

No operation, heat or burn damage


Short circuit


No cooling, No heating

No operation

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11. ERROR CODES

If you use a wired type remote controller, error codes will appear on the remote controller display. If you use a wireless remote controller, the lamp on the photodetector unit will output error codes by way of blinking patterns. See the lamp blinking patterns and error codes in the table below.

OPERATION lamp (green)

Error indications

TIMER lamp

(orange)

FILTER lamp

(red)

Wired Remote

Controller Error code

Error contents

(1) (2)

Remote controller communication error

(1)

(1)

(2)

(2)

(3)

(5)

(3)

(4)

(4)

(4)

(6)

(6)

(9)

(1)

(1)

(10)

(1)

(2)

Network communication error

Peripheral unit communication error

Indoor unit address setting error

Connection unit number error in wired remote controller system

Indoor unit power supply abnormal

Indoor unit main PCB error

Indoor unit communication circuit (wired remote controller) error

Indoor unit room temp. thermistor error

Indoor unit heat ex. temp. thermistor error

(4)

(5)

(5)

(5)

(9)

(10)

(4)

(1)

(2)

(3)

(15)

(8)

Human sensor error

Indoor unit fan motor

1 error

Indoor unit coil (expansion valve) error

Indoor unit water drain abnormal

Outdoor unit miscellaneous error

Poor refrigerant circulation

(13) (1) RB unit error

Display mode : 0.5 s ON / 0.5 s OFF

: 0.1 s ON / 0.1 s OFF

( ) : Number of flashing

Wired Remote Controller Display

UTY-RNRUZ* (2-wire type)

Mode Set Temp.

Fri 10:00AM

Fan

Error icon

Status

Air Flow Direction

VT

1

Individual

Touch the [Next Page] (or [previous page]) to switch to other indoor unit information.

Page 1/ 4

HZ

3

Status

Unoccupied

Menu

Economy

Monitor

Off

Anti Freeze

Next

Page

Off

Error

Information

Touch the [Status].

Touch the [Error Information].

2-digit numbers are corresponding to the error code in the preceding table.

For more information, refer to the installation manual of the remote controller.

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