Fujitsu UTY-VDGU Guide d'installation

Marque: Fujitsu

Modèle: UTY-VDGU

Catégorie: Climatiseurs split-system

Taper: Guide d'installation

PART No. 9381279029-02

English

INSTALLATION MANUAL

DX-kit

For authorized service personnel only.

UTY-VDGU

UTP-VU30A

UTP-VU60A

UTP-VU90A

FrançaisEspañol

MANUEL D’INSTALLATION

MANUAL DE INSTALACIÓN

Kit interface batterie

Kit conexión UTA

Pour le personnel agréé uniquement.

Únicamente para personal de servicio autorizado.

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1. SAFETY PRECAUTIONS

• 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, to the customer. Request the customer to keep them on hand for

future use, such as for relocating or repairing the unit.

• For installation of the air handling unit (heat exchanger), refer to the installation manual

for the air handling unit.

WARNING

This mark indicates procedures which, if improperly per-

formed, might lead to the death or serious injury of the user.

Request your dealer or a professional installer to install the DX-kit in accordance with

this installation manual. An improperly installed unit can cause serious accidents such

as water leakage, electric shock, or fire. If the DX-kit is installed 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 work must be performed in accordance with national wiring standards by

authorized personnel only.

Except for EMERGENCY, never turn off main as well as sub breaker of the DX-kits

during operation. It will cause compressor failure as well as water leakage. First, stop

the DX-kit 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.

CAUTION

This mark indicates procedures which, if improperly performed,

might possibly result in personal harm to the user, or damage to

property.

Read carefully all security information before use or install the DX-kit.

Do not attempt to install the DX-kit or a part of the DX-kit by yourself.

This unit must be installed by qualified personnel with a capacity certificate for handling

refrigerant fluids. Refer to regulation and laws in use on installation place.

e installation must be carried out in compliance with regulations in force

in the place

of installation and the installation instructions of the manufacturer.

This unit is part of a set constituting the DX-kit. It must not be installed alone or with non-

authorized by the manufacturer.

Always use a separate power supply line protected by a circuit breaker operating on all

wires with a distance between contact of 1/8 in (3 mm) for this unit.

The unit must be correctly earthed (grounded) and the supply line must be equipped with

a differential breaker in order to protect the persons.

The units are not explosion proof and therefore should not be installed in explosive

atmosphere.

Never touch electrical components immediately after the power supply has been turned

off. Electric shock may occur. After turning off the power, always wait 5 minutes before

touching electrical components.

This unit contains no user-serviceable parts. Always consult authorized service person-

nel to repairs.

When moving, consult authorized service personnel for disconnection and installation of

the unit.

2. ABOUT THIS PRODUCT

2.1. Precautions for using R410A refrigerant

WARNING

Do not introduce any substance other than the prescribed refrigerant into the refrigera-

tion 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 leak, make sure that it does not exceed the concentration limit.

If a refrigerant leak 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 leak occurs during operation, immediately vacate the premises and thor-

oughly ventilate the area. If the refrigerant comes in contact with a flame, it produces a

toxic gas.

2.2. Special tool for R410A

WARNING

To install a unit that uses R410A refrigerant, use dedicated tools and piping materi-

als 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 dedi-

cated 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 Changes

Gauge

manifold

The pressure in the refrigerant system is extremely high and cannot be

measured with a conventional gauge. To prevent erroneous mixing of

other refrigerants, the diameter of each port has been changed. It is rec-

ommended to use a gauge manifold with a high-pressure display range

of 500 microns to 768 psi (–0.1 to 5.3 MPa) and a low-pressure display

range of 500 microns to 551 psi (–0.1 to 3.8 MPa).

Charging

hose

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

changed.

Vacuum

pump

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 500 microns (–100.7 kPa).

Gas leakage

detector

Special gas leakage detector for R410A refrigerant.

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 falling, 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.

INSTALLATION MANUAL

PART No. 9381279029-02

VRF system DX-kit

Contents

1. SAFETY PRECAUTIONS .............................................................................................1

2. ABOUT THIS PRODUCT ..............................................................................................1

2.1. Precautions for using R410A refrigerant .............................................................1

2.2. Special tool for R410A ........................................................................................1

2.3. Accessories ........................................................................................................1

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

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

3. PRODUCT SELECTION ...............................................................................................3

3.1. Product Lineup ...................................................................................................3

3.2. System Design ...................................................................................................3

4. INSTALLATION WORK ................................................................................................3

4.1. Selecting an installation location ........................................................................3

4.2. Installation dimensions .......................................................................................4

4.3. Installing the unit .................................................................................................4

5. PIPE INSTALLATION ...................................................................................................5

5.1. Selecting the pipe material .................................................................................5

5.2. Pipe requirement ................................................................................................5

5.3. Bending pipes .....................................................................................................6

5.4. Pipe connection ..................................................................................................6

5.5. Installing heat insulation .....................................................................................6

6. MOUNTING THERMISTORS ........................................................................................6

7. ELECTRICAL WIRING .................................................................................................7

7.1. Electrical requirement .........................................................................................7

7.2. Wiring method ....................................................................................................7

7.3. Unit wiring ...........................................................................................................8

7.4. Connection of wiring ...........................................................................................9

7.5. External input and external output (Optional parts) ..........................................10

8. FIELD SETTING ..........................................................................................................13

8.1. Setting the address ...........................................................................................13

8.2. Dip switch setting ..............................................................................................14

8.3. Function setting ................................................................................................14

9. TEST RUN ...................................................................................................................15

9.1. Test run using Outdoor unit (PCB) ....................................................................15

9.2. Test run using remote controller .......................................................................15

10. CHECK LIST (Example) ...........................................................................................15

11. ERROR CODES ........................................................................................................15

12. OPERATIONS ...........................................................................................................16

12.1. Analog external inputs ....................................................................................16

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2.3.1. Control unit Accessories

Name and Shape Q’ty Application

Installation

manual

(This book)

Key

For the door of control unit

Sealing washer

For mounting the control unit to the wall

Waterproof specifications

Nuts (M8)

For mounting the control unit to the wall

Cable ties (with

stopper)

For securing the cables

Cable tie

For securing the optional remote

controller cable

Hole plug

For closing unused conduit holes on the

Control unit

Screw

(M4 × L6 mm)

For mounting the optional remote

controller

Cable tie mount

For securing the optional remote

controller cable

Thermistor

(Inlet air and outlet

air)

For measuring the room temperature

Thermistor

(Label: GAS)

For measuring the gas pipe tempera-

ture

(For gas pipes)

Thermistor

(Label: LIQ)

For measuring the liquid pipe tem-

perature

(For liquid pipes)

Thermistor holder

pipe (Small)

For mounting the thermistor

Thermistor holder

pipe (Large)

For mounting the thermistor

Thermistor spring

(For small therm-

istor holder pipe)

For mounting the thermistor

Thermistor spring

(For large thermis-

tor holder pipe)

For mounting the thermistor

Template

For installing the control unit

Connection cable 1

[Label: 32,33,35,37,39,41]

For external output

Connection cable 2 [Label: 32,34]

For external output

Connection cable 3 [Label: 34,36]

For external output

Connection cable 4 [Label: 36,38]

For external output

Connection cable 5 [Label: 38,40]

For external output

2.3.2. EEV unit Accessories

Name and Shape Q’ty Application

Installation manual

1 ―

Secure fitting

For mounting the EEV unit to the wall,

or stacking multiple EEV units

Tapping Screw L

(M4 × L16 mm)

For mounting the EEV unit to the wall

Tapping Screw S

(M4 × L10 mm)

8 For stacking multiple EEV unit

3 For fixing the conduit plate

Rubber sheet

For mounting pipe joints

Pipe heat insula-

tions

For mounting pipe joints

Cable tie (Large)

For securing heat insulations

Conduit plate

For connecting the conduit

Seal

For pasting unused piping holes

2.4. Optional parts

Connectable Peripheral Devices

Model Name Notes

System controller UTY-APGXZ1, UTY-APGX (*2)

System controller lite UTY-ALGXZ1, UTY-ALGX (*2)

Touch panel controller UTY-DTGYZ1, UTY-DTGY (*2)

Central remote controller UTY-DCGY (*2)

Wired remote controller UTY-RNRUZ*, UTY-RNRU (*1, *2)

Wired remote controller UTY-RNKU (*1, *2)

Simple remote controller UTY-RSRY, UTY-RSKU (*1, *2)

Simple remote controller UTY-RHRY, UTY-RHKU (*1, *2)

Wireless remote controller

(via IR receiver unit)

UTY-LNHU

(UTB-YWC)

(*2)

Network convertor for LONWORKS® UTY-VLGX (*2)

MODBUS® convertor for VRF UTY-VMGX (*2)

BACnet® Gateway

UTY-VBGX, UTY-ABGXZ1,

UTY-ABGX

(*2)

Service tool UTY-ASGXZ1, UTY-ASGX (*2)

Web monitoring tool UTY-AMGXZ1, UTY-AMGX (*2)

Separation tube (for EEV unit 2 connections) UTP-LX180A —

*1: Remote controller groups cannot be connected using DX-kits or other indoor units.

*2: If controlling using “external input and output” analog inputs from an external control-

ler (DDC), operations from the controllers described above are disabled.

2.5. About unit of the length

This product is 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.

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3. PRODUCT SELECTION

• Failure to observe the selection conditions described below will affect the outdoor unit

service life and operational reliability.

• When selecting air handling unit, it must be designed for R410A refrigeration.

3.1. Product Lineup

3.1.1. Product Lineup

Unit Name Model Name Environment specifications

Control unit UTY-VDGU

• Temperature: -4.0 to 114.8 °F (-20 to 46 °C)

• Humidity: 10 to 90% RH (No condensation)

EEV unit

UTP-VU30A

UTP-VU60A

UTP-VU90A

3.1.2. EEV unit Selection

• The EEV unit is selected according to the capacity class conditions.

• If the capacity class is 144 kBTU/h (40.0 kW) or 180 kBTU/h (50.0 kW), 2 EEV units are

connected (in parallel).

Capacity Class

[kBTU/h]

18 24 30 36 48 60 72 96 144 180

EEV unit model No. 30 60 90 90 + 90

Cooling capacity

[kBTU/h (kW)]

(5.3)

(7.0)

(8.8)

(10.6)

(14.1)

(17.6)

(21.1)

(28.1)

144

(42.2)

168

(49.2)

Heating capacity

[kBTU/h (kW)]

(5.9)

(7.9)

(10.0)

(11.7)

(15.8)

(19.6)

(23.7)

108

(31.7)

162

(47.5)

188

(55.1)

Heat exchanger

capacity

Refer to the Design & Technical manual.

Airflow rate

(Reference)

[CFM (m³/h)]

624

(1,060)

706

(1,200)

895

(1,520)

941

(1,600)

1,177

(2,000)

1,318

(2,240)

2,095

(3,560)

2,354

(4,000)

3,767

(6,400)

4,709

(8,000)

Capacity

range

[kBTU/h

(kW)]

Cooling

14 to

18.1

to 24

24.1

to 30

30.1

to 36

36.1

to 48

48.1

to 60

60.1

to 72

72.1

to 96

96.1

to 144

144.1

to 168

(4.1 to

5.3)

(5.4 to

7.0)

(7.1 to

8.8)

(8.9 to

10.6)

(10.7 to

14.1)

(14.2 to

17.6)

(17.7 to

21.1)

(21.2 to

28.1)

(28.2 to

42.2)

(42.3 to

49.2)

Heating

15.6

to 20

20.1

to 27

27.1

to 34

34.1

to 40

40.1

to 54

54.1

to 67

67.1

to 81

81.1

to 108

108.1

to 162

162.1

to 188

(4.6 to

5.9)

(6.0 to

7.9)

(8.0 to

10.0)

(10.1 to

11.7)

(11.8 to

15.8)

(15.9 to

19.6)

(19.7 to

23.7)

(23.8 to

31.7)

(31.8 to

47.5)

(47.6 to

55.1)

Evaporation tem-

perature

Refer to the Design & Technical manual.

Condensation

temperature

Refer to the Design & Technical manual.

Pipe size

(b)

(a)

(c)

(b)

(c)

(a)

(c)

(b)

Heat

Exchanger

Heat

Exchanger

Gas pipe Gas pipe

Liquid

pipe

Liquid

pipe

EEV

unit

EEV

unit

Capacity Class

[kBTU/h (kW)]

(5.0)

(6.3)

(8.0)

(10.0)

(12.5)

(14.0)

(20.0)

(25.0)

144

(40.0)

180

(50.0)

Pipe size

[in (mm)]

(a)

Gas

5/8

(15.88)

3/4

(19.05)

7/8

(22.2)

1-1/8

(28.58)

(b)

Liquid

3/8

(9.52)

1/2

(12.70)

5/8

(15.88)

(c)

Liquid

—

1/2

(12.70)

Pipe length

(a)

(d)

(c)

(f)

(e)

(b)

Heat

Exchanger

Heat

Exchanger

Gas pipe Gas pipe

Liquid

pipe

Liquid

pipe

EEV

unit

EEV

unit

(a) (b) (c) (d) (e) (d) + (f) (e) + (f)

≤ 16 ft

(≤ 5 m)

≤ 6 ft

(≤ 2 m)

≤ 16 ft

(≤ 5 m)

3.2. System Design

3.2.1. Basic Refrigerating System Configuration

Using the DX-kit enables

indoor units manufactured

by other than Fujitsu

general to be used in the

Fujitsu general refrigerant

system.

*1: DX-kit = Control unit

+ EEV unit

DX-kit (*1)

Outdoor unit

Indoor unit

Indoor unit Indoor unit

3.2.2. Basic DX-kit System Configuration

(1) System Pattern 1

External controllers (DDC)

not manufactured by

Fujitsu general control the

Fujitsu general outdoor

units and indoor units

(refrigerant cycle devices,

etc.) not manufactured by

Fujitsu general. With this

system, control using a

Fujitsu general VRF con-

troller is not possible.

For control line details,

see “External Input and

External Output”.

System configuration

diagram

Fujitsu general-approved devices

Outdoor unit

Indoor unit

Control unit

Liquid pipe

Gas pipe

Thermistor × 4

Wired remote

controller

External controller

not manufactured

by Fujitsu general

Control line

Piping

Wiring

EEV unit

(2) Pattern 2

Fujitsu general remote

controllers and control

devices directly control

Fujitsu general outdoor

units and indoor units

(refrigerant cycle devices,

etc.) not manufactured by

Fujitsu general. A system

configuration example is

shown below.

System Configuration

Diagram

Fujitsu general-approved devices

Outdoor unit

Indoor unit

Control unit

Liquid pipe

Gas pipe

Control line

Thermistor × 4

Wired remote

controller

Piping

Wiring

EEV unit

3.2.3. Pipe Conditions

EEV

unit

Heat

Exchanger

Straight pipe = 8 in

(200 mm) or more

Liquid pipe

Gas pipe

4. INSTALLATION WORK

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

installed.

4.1. 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 DX-kit. Install the

units securely so that they do not topple or fall.

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4.3. Installing the unit

WARNING

Install the DX-kit 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 DX-kit 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.

Carrying in and installation of the unit should be performed by a sufficient number of

people and with sufficient equipment that is adequate for the weight of the unit. Perform-

ing such work by an insufficient number of people or with inadequate equipment could

result in dropping of the unit or personal injury.

4.3.1. Installing the Control unit

• If installing outdoors, make sure to orient A upwards.

• Using a template (accessory) is recommended when positioning the holes for mounting

the control unit.

±5° or

less

Inclination limits

Sealing washers

(×3, accessories)

M8 Nuts

(×3, accessories)

Control

unit

7-7/8 in (200 mm)

or more

Service

space

7-7/8 in (200 mm)

or more

Service

space

Rubber inside the washer is contacted

tightly with the Control unit.

anchor

bolt

Rubber Steel

4.3.2. Installing the EEV unit

4.3.2.1. Connecting the conduit

(1) Remove the 2

screws and the

cover.

(2) Connect the conduit

(locally purchased)

to the conduit plate

(accessories). Then,

pass the cable

of the EEV unit

through the conduit.

(3) Attach the conduit

plate (accessories)

with 2 tapping screw

S (accessories).

(4) Re-attach the cover

with the two screws.

(5) Fix the cover with

a tapping screw S

(accessories).

(1), (4)

(3)

(5)

(2)

Cover

Conduit plate

(accessories)

Lock nut

(included

with the

conduit)

Conduit

(locally

purchased)

4.3.2.2. Changing Pipe Orientation

EEV unit pipe orientation can be changed according to the installation conditions.

(1) Remove the cover.

When the conduit

plate (accessories)

is already attached,

remove it.

(2) Invert both the

pipes and heat

insulation.

(3) Re-attach the

conduit plate (ac-

cessories) and the

cover.

For details about

connecting the con-

duit and attaching

the conduit plate

(accessories), refer

to “4.4.1. Connect-

ing the conduit”.

(1), (3)

(2)

Cover

Heat insulation

Conduit plate

(accessories)

CAUTION

Do not install the DX-kit in the following areas:

• Area with high salt content, such as at the seaside. It will deteriorate metal parts, caus-

ing 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 flammables 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 DX-kit, power supply cable, transmission cable, and remote controller cable

at least 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 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.

Take precautions to prevent the unit from falling.

(1) Install the DX-kit on a place having a sufficient strength so that it withstands against

the weight of the DX-kit.

(2) Leave the space required to service the DX-kit.

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

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

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

(6) Take servicing, etc., into consideration and leave the spaces.

(7) Do not install the unit where it will be exposed to direct sunlight.

4.2. Installation dimensions

4.2.1. Control unit

15-3/4 (400)

4-3/4

(120)

5-1/4 (134)

12-1/16 (306)

3 × Ø3/8

(3 × Ø10)

15-3/4 (400)

9-7/8 (251)

[Unit: in (mm)]

Weight of the Control unit [lbs (kg)]

UTY-VDGU 22 (10)

4.2.2. EEV unit

8-11/16 (221)

8 (203)

6-1/4 (159)

4 × Ø7/16 (11)

8 × Ø3/16 (5)

1-1/4 (31)7/8 (22)

3-9/16 (90)

2-5/16 (58)

2-5/16

(58)

(4-3/4

(120))

(5 (127))

6-5/8 (168)

8-3/8 (212.4)

(4-21/8 (104))

1-1/8 (29.2)

7-3/16 (182)

9/16 (14)

7/8 (22.2)

(3-1/16 (78))

9-1/8 (231)

1/7/16 (36)

[Unit: in (mm)]

Connection pipe diameter [in (mm)]

Model A B Weight of the EEV unit [lbs (kg)]

UTP-VU30A 3/8 (9.52) 3/8 (9.52) UTP-VU30A 4.4 (2)

UTP-VU60A 3/8 (9.52) 3/8 (9.52) UTP-VU60A 4.4 (2)

UTP-VU90A 1/2 (12.70) 1/2 (12.70) UTP-VU90A 4.4 (2)

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Prohibited EEV unit orientations

PROHIBITED

5. PIPE INSTALLATION

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.

5.1. 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 0.004 oz. /100 ft (40 mg /10 m).

Do not use copper pipes that have a collapsed, deformed, or discolored portion (es-

pecially 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.

• 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 avail-

able on the market.

Thicknesses of Annealed Copper Pipes (R410A)

Outside diameter [in (mm)] Wall thickness [in (mm)] (*1) Material

1/4 (6.35) 0.032 (0.80)

COPPER

JIS H3300 C1220T-O

or equivalent (*2)

3/8 (9.52) 0.032 (0.80)

1/2 (12.70) 0.032 (0.80)

5/8 (15.88) 0.039 (1.00)

3/4 (19.05) 0.047 (1.20)

7/8 (22.22) 0.039 (1.00)

COPPER

JIS H3300 C1220T-H

or equivalent (*3)

1-1/8 (28.58) 0.039 (1.00)

*1: Endurance pressure of the pipes 609 psi (4.2 MPa)

*2: Allowable tensile stress ≥ 33 N/mm²

*3: Allowable tensile stress ≥ 61 N/mm²

Please select the pipe size in accordance with local rules.

5.2. Pipe requirement

Use pipe with water-resistant heat insulation.

CAUTION

Refer to the installation manual of the outdoor unit for description of the length of con-

necting pipe or for difference of its elevation.

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 ex-

pected 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)).

4.3.2.3. Pasting Seals to the piping holes

Use the seals (accessories) to cover any

unused piping holes.

Seal (accessories)

Seal

(accessories)

4.3.2.4. Mounting Secure Fittings (If Using 1 EEV unit)

Use the 8 screws (accessories) to secure

the secure fittings (accessories).

Tightening torque

M4 screw

7.1 to 24.8 lbf·in

(0.8 to 2.8 N·m)

Secure fitting

(accessories)

Screws M4 × L10 mm

(accessories)

4.3.2.5. Mounting Secure Fittings (If Using 2 EEV units)

If using 2 EEV units, stacking the 2

kits is recommended.

If stacking 2 EEV units, secure us-

ing the secure fittings (accessories)

and screws (accessories).

Complete the conduit connection of

the back unit, before mounting the

front unit.

Secure fitting

(accessories)

Screws M4 × L10 mm

(accessories)

4.3.2.6. Installing EEV units

Mount the EEV unit to the wall.

Select the securing method according to the installation environment.

Method 1

Use the 8 screws (accessories) to secure

the unit.

Method 2

Mount the 4 anchor bolts (locally pur-

chased) to the wall, and then secure the

unit.

Screws M4 × L16 mm

(accessories)

Nuts and washers

(locally purchased)

Installable EEV unit orientations

Orient the arrow upwards

Installable both indoors and outdoors

Installable indoors only

(Cannot be installed outdoors)

EEV unit inclination limits

±10° or

less

±10° or

less

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5.3. Bending pipes

• The pipes are shaped by your hands or pipe bender. Be careful not to collapse them.

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

• When pipes are repeatedly bend 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.

5.4. Pipe connection

CAUTION

If air or another type of refrigerant enters the refrigera-

tion cycle, the internal pressure in the refrigeration

cycle will become abnormally high and prevent the

unit from exerting its full performance.

Pressure regulating valve

Cap

Nitrogen gas

Brazing area

Apply nitrogen gas while brazing the pipes.

Nitrogen gas pressure: 2.9 psi (0.02 MPa)

(= pressure felt sufficiently on the back of your hand)

If a pipe is brazed without applying nitrogen gas, it will create an oxidation film.

This can degrade performance or damage the parts in the unit (such as the compressor

or valves).

Do not use flux to braze pipes. If the flux is the chlorine type, it will cause the pipes to

corrode.

In addition, if the flux contains fluoride, it will affect the refrigerant piping system due to

deterioration of refrigerant oil.

For brazing material, use phosphor copper that does not require flux.

Outer diameter of pipe [in (mm)]

Connection Pipe (Liquid) 1/2 (12.70)

Connect the EEV unit pipe to the connection pipe. Braze the connectors.

When brazing the piping, take measures to prevent damage to the unit and surround-

ings due to heat.

(a) Connecting 1 EEV unit

Connection pipe

(locally purchased)

Connection pipe

(locally purchased)

(b) Connecting 2 EEV units

If connecting 2 stacked EEV units, connect the special branch pipe (optional parts).

Relay pipes: Outside dimensions Ø 1/2 in

(Ø 12.7 mm) (locally purchased)

Relay pipes: Outside dimensions Ø 1/2 in

(Ø 12.7 mm) (locally purchased)

Branch pipes

(optional parts)

Branch pipes

(optional parts)

5.5. Installing heat insulation

CAUTION

After checking for gas leaks (refer to the installation manual of the outdoor unit), perform

this section. Failure to do so may cause water leaks.

Implement heat insulation as shown in the diagram below.

(1) Mount the rubber sheets (accessories).

(2) Mount the heat insulations (accessories). There should be no gaps between the

insulation and the product.

(3) Secure to a pipe using 2 cable ties.

(1) Butyl rubber sheets

(accessories)

(2) Heat insulations

(accessories)

(3) Cable ties

(Large, accessories)

No gap

• Perform the work in (1), (2) and (3) for the 2 pipes.

• For the heat insulation on the separation tube (Optional parts) used to connect 2 EEV

units, refer to the installation manual of the separation tube.

For construction other than mounting the EEV unit (e.g., mounting thermistors, electrical

wiring, and field settings, etc.), see the construction manual enclosed with the control

unit.

6. MOUNTING THERMISTORS

• To prevent water from accumulating on top of the thermistor, orient the thermistor wires

downwards when mounting the thermistor.

• Make good contact between thermistor and air handling unit. Put the top of the thermis-

tors on the air handling unit, this is the most sensitive point of the thermistor.

Mounting thermistors to general indoor units

EEV

kit

Refrigerant flow

during cooling

Air inlet

Air outlet

Heat

exchanger

General indoor unit

A: Heat exchanger inlet pipe

Braze a thermistor holder pipe (Ø 1/4 in (Ø 6.35 mm), accessories) in front of the distribu-

tor branch.

Use a thermistor spring (accessories) to tightly seal and secure the thermistor (Ø 3/16 in

(Ø 4 mm), accessories) pipes.

(1) (2)

(3)

(1)

(2)

(3)

(1) Thermistor holder pipe

(Ø 1/4 in (Ø 6.35 mm))

(2) Thermistor

(Ø 3/16 in (Ø 4 mm))

(3) Thermistor spring

Distributor

Heat

exchanger

* Attach this thermistor in a location where the evaporating temperature can be detected

during cooling operation.

B: Heat exchanger outlet pipe

Braze a thermistor holder pipe (Ø 3/8 in (Ø 9.53 mm), accessories) to the heat exchanger

outlet pipe.

Use a thermistor spring (accessories) to tightly seal and secure the thermistor (Ø 1/4 (Ø 6

mm), accessory) pipes.

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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 controller cable

together.

Separate these cables 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 DX-kit and outdoor units and peripheral devices.

• Cut power (breaker) off.

• Touch metal part of the DX-kit for more than 10 seconds to discharge static electricity

charged in the body.

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

7.1. Electrical requirement

• The following breaker specifications apply only to connections for Fujitsu general indoor

units, RB units, and DX-kits.

• Do not simultaneously connect Fujitsu general devices and non-Fujitsu general devices

to the same breaker. In using non-Fujitsu general devices, follow the specifications for

that device.

• Select the power cable type and size

in accordance with relevant local and

national regulations.

Voltage rating

208/230 V

Operating range

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.

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 cross-

over wiring is done, make a connection for DX-kits to satisfy conditions A and B below.

A. Current breaker requirements

Model MCA

MAX. CKT. BKR

(Fuse capacity)

UTY-VDGU 0.096 A

20 A

MCA: Minimum Circuit Ampacity

MAX. CKT. BKR: Maximum Circuit

Breaker

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

nected DX-kits, RB units, and indoor units does not exceed the 15 A. For indoor unit MCA

and RB unit MCA, refer to the indoor unit and RB unit installation manual.

If the capacity of connected DX-kits, 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

Maximum connectable DX-kits, “indoor units +

DX-kits”, or “indoor units + RB units + DX-kits” (*1)

30 mA, 0.1 sec or less 44 or less (*2)

100 mA, 0.1 sec or less 45 to 128

*1: Heat pump type: indoor units, Heat recovery type: indoor units and RB units.

*2: If the total number of units connected to the breaker exceeds 44, either add a 30 mA

breaker, or use breakers with a greater capacity.

7.1.1. Cable specifications

For cable selections, see the "Connection of wiring" chapter below.

7.2. Wiring method

EXAMPLE

(*2)

Outdoor unit or RB unit (*1)

DX-kit (Control unit)

Transmission

X1, X2: Transmission

Y1, Y2, Y3: Remote controller

External interface

terminal (*3)

Indoor unit

Remote

controller

Remote controller

Power supply

Power supply Power supply

Breaker 2 Breaker 2

Breaker 1 Breaker 1

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

RB unit.

*2: When connecting the 2-wire type remote controller, Y3 is not used.

*3: For the external interface terminal, refer to "7.4. Connection of wiring".

(1)

(2)

(3)

(2)

(3)

(1) Thermistor holder pipe

(Ø 3/8 in (Ø 9.53 mm))

(2) Thermistor

(Ø 1/4 in (Ø 6 mm))

(3) Thermistor spring

Heat

exchanger

C: Inlet air thermistor/D: Outlet air thermistor

Install in a location where the effects of heat sources such as heat exchangers and heat-

ers, etc., are minimized as far as possible.

Inlet air thermistor

(accessories)

Outlet air thermistor

(accessories)

Air outlet

Air inlet

General indoor unit

7. ELECTRICAL WIRING

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.

Use the included connection cables and power cables or ones specified by the manu-

facturer. Improper connections, insufficient insulation, or exceeding the allowable current

can cause electric shock or fire.

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. Improp-

erly connected or secured cables can cause serious accidents such as overheating the

terminals, electric shock, or fire.

Do not modify the power cables, use extension cables, or use any branches in the wir-

ing. Improper connections, insufficient insulation, or exceeding the allowable current can

cause electric shock or fire.

Match the terminal board numbers and connection cable colors with those of the out-

door unit (or RB unit). Erroneous wiring may cause burning of the electric parts.

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.)

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.

Install an earth leakage breaker. In addition, install the earth leakage breaker so that the

entire AC main power supply is cut off at the same time. Otherwise, electric shock or fire

could result.

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 DX-kit 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.

Take special precaution for connection to the external controller (DDC, locally pur-

chased).

Make sure the wiring for the external input and output signals is correct.

Miswiring of these cables could damage the entire system.

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DX-kit (Control unit)

Power supply

Pull box

Breaker2

Breaker1

Power supply Power supply

Power supply

: Disconnect switch

Indoor unit Indoor unit

(Crossover wiring of power supply)

Disconnect switch shall be installed between each unit and pull box.

7.3. Unit wiring

Before attaching the cable to terminal block.

7.3.1. Power supply cable and Drain pump signal cable

Adjust the length of power supply cable to avoid excessive tension with referring figure

below.

Conduit connector

Earth (ground)

wire

5-1/2 in (140 mm)

Decide the peeling length of the covering for the power supply cable and the drain pump

signal cable according to the conditions for connecting to the terminal.

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 screw-

driver 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.

Strip 1 in

(25 mm)

Loop

Screw with

special washer

Screw with

special washer

Cable end

(Loop)

Cable

Terminal block

Cable end (Loop)

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 screw-

driver 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.

Sleeve

Strip 3/8 in

(10 mm)

Screw with spe-

cial washer

Screw with special

washer

Ring terminal

Cable

Terminal block

Cable

Ring terminal

Ring

terminal

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.

Tightening torque

M4 screw

(Power supply/L1, L2 (N), GND)

11 to 16 lbf·in

(1.2 to 1.8 N·m)

7.3.2. Transmission cable, Remote controller cable and External

interface cable

Transmission cable

Shielded cable

(no film)

1 in (25 mm)

1-9/16 in (40 mm)

Remote controller cable

For 3-wire type For 2-wire type

1 in (25 mm) 1 in (25 mm)

External interface cable

Decide the peeling length the covering for the external interface cable according to the

conditions for connecting to the terminal.

Fig. A

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.

Terminal number Tightening torque

M3 screw

(Transmission/X1, X2)

(Remote controller/ Y1, Y2, Y3)

4.4 to 5.3 lbf·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 under tightened screw can cause faulty contact, which will

lead to a communication failure.

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7.4. Connection of wiring

7.4.1. Terminal Explanation and Cable Holes

• Only one cable can be passed through each cable hole. To pass multiple cables through

a single cable hole, use a (locally purchased) multi-conductor cable with more wires, and

bundle multiple cables into one.

• Maximum length of cable is 32 ft (10 m). (recommended value, Except "P1" and "TR1")

TH1

TH2

TH3

TH4

EV1

EV2

EX1

EX2

EX3

EX4

EX6

EX7

EX5

EX8

EX9

EX10

TR1

P1: Power supply terminal

D1: Drain pump signal terminal

TR1: Transmission terminal

R1: Remote controller terminal

External interface terminal

Conduit hole positions (bottom of the Control unit)

H9 H10

H1 H2 H4

H3 H5

H6 H7 H8

Drain hole

Ø13/16 in

(Ø20 mm)

Hole diameter of H1 to H10:

Ø7/8 in (Ø22.2 mm)

Terminal No.

Terminal Name

Hole No.

Connection

Recommended

cable size (mm²)

Cable type

Specifications

P1 POWER SUPPLY H2 Power supply AWG14

(2.5)

Type245

IEC57 or

equivalent

208/230 V ~

60 Hz

187 to 253 V

2-cable + earth

(ground)

TR1 TRANSMISSION H3 Transmission

line

AWG22

(0.33)

LON-

WORKS®

compatible

cable

22 AWG LEVEL

4 (NEMA)

non-polar

2-core, twisted

pair solid core

diameter

0.026

in (0.65mm)

R1 REMOTE

CONTROLLER

H4 2-wire type

remote con-

troller

AWG22

to 16

(0.33 to

1.25)

Sheathed

PVC cable Non polar 2

core

3-wire type

remote con-

troller

AWG22

(0.33)

Sheathed

PVC cable Polar 3 core

D1 DRAIN PUMP H1 Drain pump AWG14

(2.5)

Type245

IEC57 or

equivalent

―

T1 THERMISTOR (GAS) H6 Thermistor

mounted to

the gas pipe

AWG22

(0.33)

Sheathed

PVC cable

Relay the

multi-con-

ductor cable,

and pass it

through the

designated

hole.

T2 THERMISTOR

(LIQUID)

Thermistor

mounted to

the liquid pipe

T3 THERMISTOR

(INLET AIR)

Thermistor

mounted to

the inlet

T4 THERMISTOR

(OUTLET AIR)

Thermistor

mounted to

the outlet

EV1 EEV1 1 - Red

2 - Brown

3 - Black

4 - Blue

5 - Yellow

6 - White

H9 Electronic

expansion

valve 1

AWG22

(0.33)

Sheathed

PVC cable

―

EV2 EEV2 H10 Electronic

expansion

valve 2

AWG22

(0.33)

Sheathed

PVC cable

Use the elec-

tronic expan-

sion valves

only when

two units are

connected

Terminal No.

Terminal Name

Hole No.

Connection

Recommended

cable size (mm²)

Cable type

Specifications

EX1 ON/OFF

SIGNAL

(OUTPUT)

External

output

/ Digital

H7 External

controller

AWG22

(0.33)

Sheathed

PVC cable

―

EX2 ERROR

SIGNAL

(OUTPUT)

External

output

/ Digital

EX3 FAN SIG-

NAL

External

output

/ Digital

EX4 DEFROST

SIGNAL

External

output

/ Digital

EX5 THER-

MOSTAT

ON/OFF

SIGNAL

External

output

/ Digital

EX6 ON/OFF

SIGNAL

(INPUT)

External

input

/ Digital

H8 External

controller

AWG22

(0.33)

Sheathed

PVC cable

ERROR

SIGNAL

• OFF (Open)

= Error

• ON (Short)

= Normal

EX7

(*1)

ERROR

SIGNAL

(INPUT)

External

input

/ Digital

The factory default

is shorted between

the terminals by the

cables.

EX8 COOL/

HEAT

SIGNAL

External

input

/ Digital

EX9 ANALOG

SIGNAL

External

input

/ Analog

FLOAT SW

SIGNAL

External

input

/ Digital

H5 Float switch

mounted

to the heat

exchanger

AWG22

(0.33)

Sheathed

PVC cable

―

*1: The factory default is shorted between the terminals by the cables. If there is a mal-

function with an external device, using this external input is recommended in order to

protect the refrigerant system.

NOTES

Be sure to use conduits for all holes that pass through the connection wires to prevent

the entry of water, insects and small animals.

7.4.2. Unused holes

Attach the hole plug (accessories) to

the unused holes to prevent the entry of

insects and small animals.

Hole plug

(accessories)

7.4.3. Mount the wired remote controller to the inside of the control

unit

NOTES

When using the wired remote controller, if the temperature drops below 32°F (0°C),

the LCD display may become dim, the response may become slower, and the time ac-

curacy of the clock will be lost.

(1) Processing the remote controller cable

For 2-wire type remote controller (locally purchased)

3/8

(10)

(25)

29-1/2 (750)

Refer to the installation manual

of the remote controller.

← To control unit To remote controller →

[Unit: in (mm)]

For 3-wire type remote controller (attached with the remote controller)

3/8

(10)

(25)

29-1/2 (750)

← To control unit To remote controller →

Refer to the installation manual

of the remote controller.

[Unit: in (mm)]

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(2) Wiring the remote controller cable (door side)

See the wired remote controller installation manual for how to install the remote controller

and the wiring method. Further, as shown in the diagram below, pass and draw through

the remote controller cable from the case to the cable hole at the back of the case.

5-7/8 (150)

1-15/16 (50)

[Unit: in (mm)]

Remote controller cable Back side of the door

Fixed position of the

remote controller

Earth (ground)

cable

Cable tie mounts

(accessories)

Cable ties

(accessories)

Cable tie (accessories)

Bundle the remote

controller cable together

with the ground cable.

Screws M4 ×

L6 mm

(accessories)

Remote

controller

cable

Rear case of the

remote controller

(3) Wiring the remote controller cable (device side)

Y1 Y2 Y3Y1 Y2

Non-polar

(*1)

Red

White

Black

For 2-wire type For 3-wire type

Remote controller cable

Cable tie (accessories)

*1: If you connect the remote controller cable to the terminal Y3, 2-wire type remote

controller does not work.

(4) Set the DIP switch according to the type of remote controller used.

Factory setting: 2WIRE

DIP switch

(SW1)

7.5. External input and external output (Optional parts)

7.5.1. Digital external inputs

• Select either the apply voltage method or dry contact method for digital external inputs.

• Both types of terminals cannot be used simultaneously.

• Float witch signal is compatible with the dry contact method only.

Switch connectors as shown in the table below according to the method selected.

Terminal name

PCB connector (*: factory setting)

Apply voltage Dry contact

ON/OFF SIGNAL (INPUT) CNA01 CNA02*

ERROR SIGNAL (INPUT) CNA06 CNA07*

COOL / HEAT SIGNAL CNA03 CNA04*

FLOAT SW SIGNAL Incompatible CNA05*

CNA04

CNA02

CNA07

CNA01

CNB01

CNA03

CNA06

External input terminal

(Dry contact terminal)

External input terminal

(Apply voltage terminal)

External output terminal

Controller PCB

• 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.

● Apply voltage terminal ([CNA01], [CNA03], [CNA06])

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

Apply voltage terminal ([CNA01], [CNA03], [CNA06]).

CNA01

(*b)

(*1)

(*a)

CNA06

CNA03

Power supply

DC 12 to 24 V

Load re-

sistance

Load re-

sistance

Load re-

sistance

Load re-

sistance

Connected unit

Input 1Input 2Input 3

Control unit

Terminal

board

P.C.B.

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 to 2, and 1 to 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.

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When connected to Apply voltage terminals of multiple DX-kits with a connected unit,

be sure to make a branch outside the DX-kit using a pull box, etc. as shown on below

example.

CNA01

Power supply

DC 12 to 24 V

Load re-

sistance

Load re-

sistance

Connected unit

Input

device 2

Control unitControl unit Control unit

Input

device 1

Terminal

board

P.C.B.

● Dry contact terminal ([CNA02], [CNA04], [CNA07])

When a power supply is unnecessary at the input device you want to connect, use the Dry

contact terminal ([CNA02], [CNA04], [CNA07]).

Ch 4

Ch 3

Ch 1

Ch 2

CNA02

CNA04

CNA07

Control unit

Terminal

board

P.C.B.

GND

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 sufﬁ ciently careful when wiring.

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.

Power supply for relay

Control unit

Input device 2

Input device 1

K1 - K6: Relay

(Device for DC Current)

P.C . B

NOTES

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.

Pulse

The width of pulse must

be longer than 200 ms.

Edge

(1) ON/OFF SIGNAL (INPUT)

[For the “Edge” input method, function setting “60” is set to “00”]

Terminal block Input signal Command

ON/OFF SIGNAL

(INPUT)

Pin 1 to Pin 3

OFF → ON Operation

ON → OFF Operation stopped

[For the “Edge” input method, function setting “60” is set to “01”]

Terminal block Input signal Command

ON/OFF SIGNAL

(INPUT)

Pin 1 to Pin 3

OFF → ON Cooling operation

ON → OFF Operation stopped

[For the “Pulse” input method]

Terminal block Input signal Command

ON/OFF SIGNAL

(INPUT)

Pin 1 to Pin 2 OFF → ON Operation

Pin 1 to Pin 3 OFF → ON Stop

* The last command has priority.

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

(2) ERROR SIGNAL (INPUT)

If an error signal is input, perform protection operation (Thermostat OFF mode).

Make sure to install so that the input signals during normal operation is always “ON”.

Terminal block Input signal Command

ERROR SIGNAL

(INPUT)

Pin 1 to Pin 2

ON Normal

OFF Error

(3) COOL/HEAT SIGNAL

Switch the operation mode (heating/cooling).

[“Edge” input method, function setting “60” is set to “00”]

Terminal block Input signal Command

COOL/HEAT

SIGNAL

Pin 1 to Pin 2

OFF → ON Heat

ON → OFF Cool

[“Edge” input method, function setting “60” is set to “01”]

Terminal block Input signal Command

COOL/HEAT

SIGNAL

Pin 1 to Pin 2

OFF → ON Heating operation

ON → OFF Operation stopped

NOTES

• In heat recovery system, HEAT/COOL switching during operation is disabled unless

the RB unit and DX-kit are connected in 1-to-1.

• If switching the operation mode directly from cooling to heating to cooling, set the

priority mode to “indoor unit priority” (*1), and set the DX-kit to “Administrative indoor

unit (or Master indoor unit) (*2)”. Making this setting when the DX-kit and the VRF for

another indoor unit are connected to the same refrigerant system will make the DX-kit

prioritize the operation mode, so be careful.

*1: For the setting methods, refer to the installation manual for the outdoor unit in

V-II and J-II systems, and refer to the installation manual for the RB unit in VR-II

system.

*2: For the settings method, see the wired remote controller installation manual and

this installation manual.

(4) FLOAT SW SIGNAL

Check the drain status.

If the “ON” status continues for 3 minutes or more, decide a drainage error, and perform

a protection stop. (Thermostat OFF and FAN OFF mode) Further, turn OFF and ON the

power again to restore.

[“Edge” input only]

Connector Input signal Command

FLOAT SW SIG-

NAL

Pin 1 to Pin 3

OFF → ON

Protection opera-

tion

ON → OFF Normal

7.5.2. Analog external inputs

Changing the voltage of the signals entered to “analog external inputs” enables you to set

either the operation temperature or the required operation performance.

If using this function, make the following DIP switch settings.

i) Set the “Analog external inputs ON/OFF” setting to “ON”.

ii) Set the control item (either the operation temperature or required operation perfor-

mance).

Connected unit

Connected

device

Control unit

(DX-kit)

Analog signal

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7.5.3. External output

No. Terminal block

Type-i Type-ii

Status

DX-kit internal

relay status

DX-kit output

level

1 ON/OFF SIGNAL ON (Open) OFF Stop

OFF (Short) ON (DC 12 V) Operation

2 ERROR SIGNAL ON (Open) OFF Normal

OFF (Short) ON (DC 12 V) Error

3 FAN SIGNAL ON (Open) OFF FAN off

OFF (Short) ON (DC 12 V) FAN on

4 DEFROST SIGNAL ON (Open) OFF Normal

OFF (Short) ON (DC 12 V) Defrosting

5 THERMOSTAT

ON/OFF SIGNAL

ON (Open) OFF Thermostat Off

OFF (Short) ON (DC 12 V) Thermostat On

6 DRAIN PUMP

SIGNAL (*1)

OFF Drain pump Off

ON (AC 230 V) Drain pump On

Select either of the following two power supply methods. (Factory setting is Type-i)

Type-i

• Using a power supply from other than the DX-kit (Connected unit, etc.)

• Usable tolerance voltages and currents: AC 208/230 V / 1 A max or DC 30

V max / 1 A Max

Type-ii

• Using a power supply from the DX-kit control unit

• Output voltage: Hi DC 12 V ± 2 V, Lo 0 V / 50 mA max

• Use an external input and output cable with appropriate external dimension, depending

on the number of cables to be installed.

Type-i:

Using a power supply from other than the DX-kit (Connected unit, etc.)

Power supply

Terminal

Relay PC

board

Control unit (DX-kit)

Connected unit

Connected

device 1

Connected

device 2

Connected

device 3

Connected

device 4

Connected

device 5

Drain pump

PC board

Power supply

for drain pump

AC 208/230 V / 1A max

DC 30 V max / 1A max

When using a drain pump, connect relay that is

compatible with AC power supply. (locally purchased)

Precautions for Type-i

If connecting a dielectric load such as a relay coil, etc., to the connected device, make

sure to add a surge protector circuit to the load side as shown in the diagram.

Power supply

Connected device

Relay

Dielectric load

Surge protector circuit

Control unit (DX-kit)

Terminal

Relay PC

board

PC board

Type-ii:

Using a power supply from the DX-kit control unit

CNB01

Terminal

12 V DC line

Control unit (DX-kit)

Connected unit

Connected

device 1

Connected

device 2

Connected

device 3

Connected

device 4

Connected

device 5

Drain pump

PC board

Power supply

for drain pump

When using a drain pump, connect relay that is

compatible with AC power supply. (locally purchased)

• If Type-ii is selected, change the wiring as shown in the diagram. (All cables used are

enclosed.)

(a1)

(b) (c) (d) (e)

(a2)

(a3)

(a4)

(a5)

(a6)

41403938373635343332

(a)

CNB01

CN800

CN801 CN802

About the cable name and

cable color

(a) Connection cable 1:

(a1) Brown, (a2) Red

(a3) Orange, (a4) Yellow

(a5) White, (a6) Blue

(b) Connection cable 2:

Brown

(d) Connection cable 4:

Brown

(e) Connection cable 5:

Brown

Cable clamps

If connecting the connection cables (accessories) to a terminal, make sure to

match the number of the label affixed to the cable with the terminal number.

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8. FIELD SETTING

SET*-SW1

SET*-SW2

SET*-SW3

SET*-SW4

IU AD ×10

IU AD ×1

REF AD ×1

REF AD ×10

RC AD ×1

SET2

SET3

SET4

SET1

DIP switch

[LED1 indicator]

ON: Normal operation

Flashing: Error

DIP switch

Rotary switch

LED1

DIP switch

CAUTION

Be sure to turn OFF the power before performing the field setting.

8.1. Setting the address

8.1.1. Setting the indoor unit address and refrigerant circuit

address controlled by the DX-kit

(1) Setting automatic address

Set the rotary switch IU_AD,REF_AD to 0.

(For the advanced function settings, see the outdoor

unit installation manual.)

(2) Setting manual address: Set the rotary switch IU_AD,REF_AD to the specified

value.

Manual address setting method

• If the receiver unit is attached, the indoor unit address and the refrigerant circuit address

can also be set up through the wireless remote controller.

CAUTION

Use an insulated screwdriver to set the DIP switches.

Setting

range

Type of switch

Indoor unit address controlled by the DX-

kit

• Rotary switch [IU AD × 1]

(Factory setting “0”)

• Rotary switch [IU AD × 10]

(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.

0 to 63

Setting example 2

IU AD × 10 IU AD × 1

Refrigerant circuit address

• Rotary switch [REF AD × 1]

(Factory setting “0”)

• Rotary switch [REF AD × 10]

(Factory setting “0”)

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.

0 to 99

Setting example 63

REF AD × 10 REF AD × 1

• If working in an environ-

ment 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 set-

ting using the wireless

remote controller.)

* Do not set the indoor

unit address (IU AD

SW) at 64 to 99.

It may result in failure.

Table A

Address

Rotary switch

setting

Address

Rotary switch

setting

Refrigerant

circuit

REF AD SW

Indoor unit

IU AD SW

× 10 × 1 × 10 × 1

000000

101101

202202

303303

404404

505505

⁞⁞⁞⁞⁞⁞

10 1 0 10 1 0

11 1 1 11 1 1

⁞⁞⁞⁞⁞⁞

99 9 9 63 6 3

8.1.2. Remote controller address

• Set this address if connecting a Fujitsu general remote controller.

• If using analog inputs, Fujitsu general remote controller operation will be disabled.

If using analog inputs, DX-kit cannot form the remote controller group.

RC AD SW

DX-kit DX-kit

Remote

controller

DX-kit cannot form the same remote controller

group as the indoor unit of other type.

DX-kit Indoor unit

i) 3-wire type

• Rotary switch (RC AD SW)...Factory setting “0”

• When connecting multiple indoor units to 1 standard wired remote controller, set the ad-

dress at RC AD SW in sequence from 0.

Setting Setting range Type of switch

Remote controller

address

0 to 15

Setting

example

RC AD

RC AD SW

0123456789ABCDEF

Address

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

ii) 2-wire type

• Rotary switch (RC AD SW)...Factory setting “0”

• Since the remote controller address settings are automatically configured, you do not

need to configure them.

• If configuring manually, it is necessary to configure both the indoor unit and the remote

controller.

• For details, please refer to the remote controller manual.

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8.2. Dip switch setting

8.2.1. Capacity settings of indoor units to be controlled

The capacity of indoor units to be controlled is set.

Indoor unit capacity

[kBTU/h (kW)]

Dip switch setting

SET1-1 SET1-2 SET1-3 SET1-4 SET2-1

18 (5.3)

(factory setting)

ON OFF ON OFF OFF

24 (7.0) OFF ON ON OFF OFF

30 (8.8) OFF OFF OFF ON OFF

36 (10.6) ON OFF OFF ON OFF

48 (14.1) OFF ON OFF ON OFF

60 (17.6) OFF OFF ON ON OFF

72 (21.2) ON OFF ON ON OFF

96 (28.1) ON ON ON ON OFF

144 (42.2) ON OFF OFF ON ON

168 (49.2) OFF ON OFF ON ON

Not described above Settings prohibited

8.2.2. Setting digital input signal methods

Select either edge method or

pulse method as the external

inputs signal method.

DIP switch SET2-2 Digital input signals format

OFF (factory setting) Edge

ON Pulse

Make sure that SET2-3 and SET2-4 are always OFF.

8.2.3. Analog external inputs method

• You can select the item to be controlled using analog external inputs from the external

controller (either “Operation temperature” or “Required operation performance”).

• Make the DIP switch SET3-1 settings before making the SET3-2 settings.

• Make sure to set a connection status that uses the external controller.

• If SET3-1 is ON, VRF device controls will be disabled.

(i) Analog external inputs

ON/OFF

DIP switch SET3-1 Analog external inputs

ON/OFF

OFF (factory setting) OFF

ON ON

(ii) Control items

The items to be controlled

are selected according to the

device status that uses the

external controller.

DIP switch SET3-2 Control conditions

OFF (factory setting) Operation temperature

ON Required operation perfor-

mance

8.2.4. AC (air conditioning.) control settings

Select the AC control format

from either “outlet temperature

control” or “inlet temperature

control”.

DIP switch SET3-3 Temperature control position

OFF (factory setting) Outlet temperature control

ON Inlet temperature control

Make sure that SET3-4 is always OFF.

8.2.5. RB unit bypass circuit feasibility

• If connecting the RB unit and a

general indoor unit 1-to-1 in the

heat recovery system unit, config-

ure a bypass circuit in the RB unit

when the heat thermostat is OFF.

DIP switch SET4-3

OFF (factory setting) No bypass

ON With bypass

• Prevents hot air from outlet when the heat thermostat is OFF.

• If the indoor unit is 40kW or 50kW type, the RB unit cannot be connected.

8.2.6. Administrative indoor unit setting

• You can set the DX-kit as the

“administrative indoor unit” from

among multiple indoor units

(including the DX-kit) connected

using the same refrigerant system

(or RB unit).

DIP switch SET4-4 Administrative indoor

unit settings

OFF (factory setting) OFF

ON ON

• Only one administrative indoor unit can be set using the same refrigerant system (or RB

unit). If forming the remote controller group, set this DIP switch "OFF".

• When connecting the wired remote controller to the DX-kit, set this switch to OFF. (Set

the “Administrative indoor unit setting” with the wired remote controller.)

Make sure to set SET4-1 and SET4-2 to always OFF.

Precautions if using

the DX-kit as the

administrative indoor

unit

If the “Administrative indoor unit setting” is “ON” for another

indoor unit connected to the same refrigerant system (or RB

unit), make sure to turn ”OFF” that setting. For details, see

the wired remote controller installation manual.

8.2.7. Remote controller selections

The cable type of wired remote

controller has been selected.

DIP switch SW1 Wired remote controller

cable type

2WIRE (factory setting) 2 wire type

3WIRE 3 wire type

8.3. Function setting

• 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.

(Set IU AD, REF AD SW to 0)

• Refer to “8.1. 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

number

Setting

number

Default

Details

Filter indicator

interval

00 Standard

○

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.

01 Longer

02 Shorter

Filter indicator

action

00 Enable

○

Enable or disable the filter indicator.

Setting 02 is for use with a central

remote controller.

01 Disable

Display only

on central

remote con-

troller

Auto restart 40

00 Enable

Enable or disable automatic system

restart after a power outage.

01 Disable

○

Cool Air Pre-

vention

00 Super low Restrain the cold airflow with mak-

ing the airflow lower when starting

heating operation.

If using Outlet temperature control

(DIP switch SET3-3: OFF), set this

function"01".

Follow the

setting on

the remote

controller

○

Error report

target

00 All

○

Change the target for reporting

errors. Errors can either be reported

in all locations, or only on the

central remote controller.

Display only

on central

remote

controller

Switching

functions for

external inputs

and external

outputs termi-

nals

00 Mode 0

○

The connection terminal functions

can be changed depending on the

type of external device. For details

of the connection terminal func-

tions, see the Design & Technical

Manual.

01 Mode 1

Selecting stop

operation dur-

ing an external

error

00 Mode 0

○

Thermostat off

01 Mode 1 Thermostat OFF + fan stop

02 Mode 2

Thermostat OFF + fan stop +

outdoor unit stop

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9. TEST RUN

The test run function will force the outdoor unit to operate. When performing the test run,

confirm that the entire system including the external devices operates normally. (If only the

outdoor unit operates, it may cause damage to the entire refrigerant system.)

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. (If using analog inputs, Fujitsu general remote controller operation will

be disabled.)

10. CHECK LIST (Example)

Pay special attention to the check items below when installing the entire system. After

installation is complete, be sure to check the following check items again.

Check items If not performed correctly

Check

box

Are the external devices and DX-Kit

operating as expected?

No operation, heat or burn damage

Has the indoor unit been installed cor-

rectly?

Vibration, noise, indoor unit may drop

Has there been a check for gas leaks

(refrigerant pipes)?

No cooling, No heating

Has heat insulation work been com-

pleted?

Water leakage

Does water drain easily from the indoor

units?

Water leakage

Is the voltage of the power source the

same as that indicated on the label on

the indoor unit?

No operation, heat or burn damage

Are the wires and pipes all connected

completely?

No operation, heat or burn damage

Is the indoor unit earthed (grounded)? Short circuit

Is the connection cable the speciﬁ ed

thickness?

No operation, heat or burn damage

Are the inlets and outlets free of any

obstacles?

No cooling, No heating

Does start and stop air conditioner op-

eration by remote controller or external

device?

No operation

After installation is completed, has the

proper operation and handling been

explained to the user?

11. ERROR CODES

• When an error occurs, the LED on the PC board (LED name: LED1) flashes.

• “Error code” can be viewed by connecting the optional wired remote controller, group

remote controller, and IR receiver unit, etc.

If you use a wired type remote controller (Optional parts), error codes will appear on the

remote controller display. If you use a wireless remote controller (IR receiver unit of op-

tional parts), 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.

Error indications

Wired remote

controller

error code

Error contents

OPERATION

lamp (green)

TIMER lamp

(orange)

FILTER lamp

(red)

(1) (2)

Remote controller communi-

cation error

(1) (4)

Network communication error

(1) (6)

Peripheral unit communica-

tion error

(2) (6)

Indoor unit address setting

error

(2) (9)

Connection unit number error

in wired remote controller

system

(3) (1)

Indoor unit power supply

abnormal

(3) (2)

Indoor unit main PCB error

(3) (10)

Indoor unit communication

circuit (wired remote control-

ler) error

(4) (2)

Indoor unit heat ex. temp.

thermistor error

(4) (10)

Indoor unit air temp. thermis-

tor error

(5) (2)

Indoor unit coil (expansion

valve) error

(5) (3)

Indoor unit water drain

abnormal

(9) (15)

Outdoor unit miscellaneous

error

(13) (1)

RB unit error

(13) (6)

DX-kit 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

Error code

Error icon

Touch the [Next Page] (or [previous page])

to switch to other indoor unit 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.

UTY-RNKU (3-wire type)

UTY-RNRU (2-wire type)

For details on marking the ERROR CODES, refer to the Manual of “Wired Remote Controller”.

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12. OPERATIONS

12.1. Analog external inputs

CAUTION

Use an insulated screwdriver to set the adjustment dial.

Do not apply voltage greater than 10 V.

The operation temperature and required operation performance are set by changing the

voltage of the signals entered to “analog external inputs”. Compensating the analog circuit

tolerance before using this function is recommended.

(1) Initial settings for using the analog external inputs circuit.

• Set the DIP switch SET3-1 to “ON”.

• Set the DIP switch SET3-2 to “OFF”.

(2) Compensate the tolerance of the circuit that measures the voltage of the analog input

signals.

Analog inputs

adjustment dial

Connected unit

Power supply

DC 5 V

Terminal block

PC board

VR700

Control unit (DX-kit)

VR700

Compensation method

i) Connect the power supply adjusted to output DC 5 V to the designated terminal.

ii) Turn ON the power supply.

iii) Use the adjustment dial to compensate so that the temperature display for the wired

remote controller indicates 68°F (20°C).

Setting the operation temperature using analog external inputs

Connected unit

Connected

device

Control unit

(DX-kit)

Analog signal

The operation temperature is set by changing the voltage of the input signals.

(If using this function, set the DIP switch SET3-2 to “OFF”.)

Formula:

Operation temperature T (°F) = 5.0 × AIN + 43.0

AIN = Input voltage (1.0 to 9.0 V)

See the following diagram for the advanced input conditions.

a) Using the inlet to control the temperature

b) Using the outlet to control the temperature

88°F

(30°C)

78°F

(25°C)

56°F

(14°C)

88°F

(30°C)

84°F

(28°C)

62°F

(17°C)

64°F

(18°C)

48°F

(10°C)

4.2 V

2.6 V

3.8 V 8.2 V

7.0 V

9.0 V 1.0 V 9.0 V

Cooling

Input voltage

Operation

temperature

Operation

temperature

Input voltage

Heating

(3) Setting required operation performance using analog external inputs

• The operation capacity can be set by changing the voltage of the input signals.

* Refrigerant cycle protection is prioritized, so operation may not be as required.

• If using this function, set the DIP switch SET3-2 to “ON”.

Formula:

Required operation performance C (%) = 12.5 × AIN - 11.25

AIN = Input voltage (1.3 to 8.9 V)

If AIN < 1.3 V, C = 0% fixed

If AIN > 8.9 V, C = 100% fixed

Input voltage

Required operation

performance

1.3 V 8.9 V

100%

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1. CONSIGNES DE SÉCURITÉ

• Avant d’installer cet appareil, veuillez lire attentivement ce manuel.

• Les avertissements et précautions indiqués dans ce manuel contiennent des informa-

tions importantes pour votre sécurité. Assurez-vous de les respecter.

• Remettez ce manuel au client. Demandez au client de les conserver soigneusement

pour toute utilisation future, par exemple pour déplacer ou réparer l’appareil.

• Pour l'installation de l'unité de traitement de l'air (échangeur de chaleur), référez-vous au

manuel d'installation de l'unité de traitement de l'air.

AVERTISSEMENT

Ce symbole signale toute procédure qui, si elle est

exécutée de manière incorrecte, peut provoquer de

graves blessures, voire la mort de l’utilisateur.

Demandez à votre revendeur ou à un installateur professionnel d’installer le kit DX

intérieur conformément aux instructions du présent manuel d’installation. Une unité

installée de façon incorrecte peut être la cause d’accidents graves, tels que fuites d’eau,

choc électrique ou incendie. Si le kit DX est installé sans tenir compte des instructions

données dans le manuel d’installation, la garantie du fabricant devient nulle.

Ne mettez pas l’appareil sous tension tant que l’installation n’est pas complètement

terminée. Vous risqueriez de provoquer un accident grave, tel qu’un choc électrique ou

un incendie.

En cas de fuite de réfrigérant pendant l’installation, ventilez la zone. Si le réfrigérant

entre en contact avec une flamme, un gaz toxique est produit.

Le travail d’installation doit être effectué conformément aux normes de câblage natio-

nales seulement par du personnel autorisé.

Sauf en cas d’URGENCE, ne coupez jamais le conducteur principal ni le disjoncteur

des kits DX pendant le fonctionnement. Cela provoquerait une panne du compresseur

ainsi qu’une fuite d’eau. En premier lieu, arrêtez le kit DX à l’aide de la télécommande,

du convertisseur ou d’un dispositif d’entrée extérieur, puis coupez le disjoncteur.

Assurez-vous de passer par la télécommande, le convertisseur ou un dispositif d’entrée

extérieur.

Lors de la conception du disjoncteur, placez-le à un endroit où les utilisateurs ne

peuvent pas le démarrer ou l’arrêter au cours de leur travail quotidien.

ATTENTION

Ce marquage indique des procédures qui, si elles ne sont

pas effectuées correctement, peuvent entraîner des bles-

sures corporelles ou des dommages matériels.

Avant d’utiliser ou d’installer le kit DX, lisez attentivement toutes les informations rela-

tives à la sécurité.

N’essayez pas d’installer vous-même le kit DX ou une partie de celui-ci.

Cet appareil doit être installé par un personnel qualifié titulaire d’un certificat d’aptitude

en manipulation des fluides frigorigènes. Référez-vous à la réglementation et à la législa-

tion en vigueur sur l’emplacement d’installation.

L’

installation doit être effectuée conformément à la réglementation en vigueur

sur

l’emplacement d’installation et à la notice d’installation du fabricant.

Cet appareil fait partie d’un ensemble formant le kit DX. Il ne doit pas être installé isolé-

ment ou avec un équipement non autorisé par le fabricant.

Utilisez toujours une ligne d’alimentation séparée, protégée par un disjoncteur fonction-

nant sur tous les fils, en respectant une distance de 1/8 po (3 mm) entre les contacts

pour cet appareil.

L’appareil doit être correctement relié à la masse et la ligne d’alimentation doit être

équipée d’un disjoncteur différentiel afin de protéger les personnes.

Les appareils ne sont pas antidéflagrants. Ils ne doivent donc pas être installés dans une

atmosphère explosive.

Ne touchez jamais des composants électriques immédiatement après la coupure de

l’alimentation. Un choc électrique pourrait se produire. Après avoir coupé le courant,

patientez 5 minutes avant de toucher des composants électriques.

Cet appareil ne contient aucune pièce dont l’entretien est à charge de l’utilisateur. Pour

les réparations, adressez-vous toujours à un technicien de service agréé.

En cas de déménagement, faites appel à un technicien de service agréé pour débran-

cher et installer l’appareil.

2. INFORMATIONS SUR LE PRODUIT

2.1. Précautions d’utilisation du réfrigérant R410A

AVERTISSEMENT

N’introduisez aucune substance autre que le fluide frigorigène prescrit dans le circuit de

réfrigération. Toute pénétration d’air dans le circuit de réfrigération provoque une éléva-

tion excessive de la pression et est susceptible de causer la rupture des conduites.

En cas de fuite de réfrigérant, assurez-vous que la valeur limite de concentration n’est

pas dépassée. Si une fuite de réfrigérant dépasse la valeur limite de concentration, un

manque d’oxygène peut alors survenir.

Ne touchez pas le réfrigérant qui s’échappe des raccordements du circuit de réfrigé-

ration ou d’autres zones. Tout contact direct avec le réfrigérant peut provoquer des

gelures.

En cas de fuite de réfrigérant pendant l’utilisation de l’appareil, quittez immédiatement

les lieux et ventilez soigneusement la zone. Si le réfrigérant entre en contact avec une

flamme, un gaz toxique est produit.

2.2. Outil spécial pour R410A

AVERTISSEMENT

Pour l’installation d’une unité qui contient du réfrigérant R410A, utilisez les outils et les

matériaux de tuyauterie qui ont été spécifiquement conçus pour l’usage de R410A. La

pression du R410A étant environ 1,6 fois supérieure à celle du R22, le fait de ne pas

utiliser la tuyauterie spéciale ou de réaliser une installation incorrecte peut provoquer la

rupture du circuit ou des blessures.

Il peut en outre se produire des accidents graves, tels que fuites d’eau, choc électrique

ou incendie.

Nom de

l’outil

Modifications

Manomètre

La pression dans le système de réfrigération est extrêmement élevée et

ne peut pas être mesurée avec un manomètre classique. Pour empê-

cher le mélange accidentel d’autres fluides frigorigènes, le diamètre de

chaque orifice a été modifié. Il est recommandé d’utiliser un manomètre

doté d’une plage d’affichage haute pression de 500 microns à 768 psi

(-0,1 à 5,3 MPa), et d’une plage d’affichage basse pression de 500

microns à 551 psi (-0,1 à 3,8 MPa).

Flexible de

remplissage

Pour augmenter la résistance à la pression, le matériau du flexible et la

taille de la base ont été modifiés.

Pompe à

vide

Il est possible d’utiliser une pompe à vide conventionnelle moyennant

l’installation d’un adaptateur.

Veillez à ce que l’huile de la pompe ne reflue pas dans le système. La

pompe doit être capable d’aspirer à 500 microns (-100,7 kPa).

Détecteur de

fuite de gaz

Détecteur de fuite de gaz spécial pour réfrigérant R410A.

2.3. Accessoires

AVERTISSEMENT

Pour l’installation, veillez à utiliser les pièces fournies par le fabricant ou autres pièces

recommandées. L’utilisation de pièces non recommandées peut être la cause d’acci-

dents graves, tels que chute de l’appareil, fuites d’eau, choc électrique ou incendie.

Les pièces d’installation suivantes sont fournies. Utilisez-les en respectant les indica-

tions.

Conservez le manuel d’installation dans un endroit sûr et ne jetez aucun autre acces-

soire, jusqu’à ce que l’installation soit terminée.

MANUEL D’INSTALLATION

N° DE PIÈCE 9381279029-02

Kit DX à système VRF

Contenu

1. CONSIGNES DE SÉCURITÉ ........................................................................................1

2. INFORMATIONS SUR LE PRODUIT ............................................................................1

2.1. Précautions d’utilisation du réfrigérant R410A ....................................................1

2.2. Outil spécial pour R410A ....................................................................................1

2.3. Accessoires ........................................................................................................1

2.4. Pièces en option .................................................................................................2

2.5. Informations concernant l’unité de longueur .......................................................2

3. SÉLECTION DU PRODUIT ...........................................................................................3

3.1. Réglage du produit .............................................................................................3

3.2. Conception du système ......................................................................................3

4. TRAVAUX D’INSTALLATION .......................................................................................3

4.1. Choix du lieu d’installation ..................................................................................3

4.2. Dimensions de l’installation ................................................................................4

4.3. Installation de l’appareil ......................................................................................4

5. INSTALLATION DE LA TUYAUTERIE .........................................................................5

5.1. Sélection du matériau des tuyaux ......................................................................5

5.2. Exigence relative aux tuyaux ..............................................................................5

5.3. Cintrage des tuyaux ............................................................................................6

5.4. Raccordement des tuyaux ..................................................................................6

5.5. Installation de l’isolation thermique .....................................................................6

6. INSTALLATION DES SONDES TEMPÉRATURES ......................................................6

7. CÂBLAGE ÉLECTRIQUE .............................................................................................7

7.1. Spéciﬁ cations électriques ...................................................................................7

7.2. Méthode de câblage ...........................................................................................7

7.3. Câblage de l’appareil ..........................................................................................8

7.4. Raccordement du câblage ..................................................................................9

7.5. Entrée externe et sortie externe (pièces en option) ..........................................10

8. RÉGLAGE SUR SITE .................................................................................................13

8.1. Réglage de l’adresse ........................................................................................13

8.2. Réglage du commutateur Dip ...........................................................................14

8.3. Réglage des fonctions ......................................................................................14

9. ESSAI DE FONCTIONNEMENT .................................................................................15

9.1.

Test de fonctionnement à l’aide de l’unité extérieure (carte à circuits imprimés) ....

9.2. Test de fonctionnement en utilisant la télécommande ......................................15

10. LISTE DE CONTRÔLE (Exemple) ...........................................................................15

11. CODES D’ERREUR ..................................................................................................15

12. OPÉRATIONS ...........................................................................................................16

12.1. Entrées externes analogiques ........................................................................16

9381279029-02_IM.indb 19381279029-02_IM.indb 1 02/10/2019 13:24:0702/10/2019 13:24:07

Fujitsu UTY-VDGU Guide d'installation

Marque: Fujitsu

Modèle: UTY-VDGU

Catégorie: Climatiseurs split-system

Taper: Guide d'installation

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