Fujitsu UTP-VX60A, UTP-VX30A, UTP-VX90A, UTY-VDGX Installation Manual

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PART NO. 9381279005

[Original instructions]

INSTALLATION MANUAL

DX-kit

For authorized service personnel only.

UTY-VDGX UTP-VX30A UTP-VX60A UTP-VX90A

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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 performed, 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 ﬁ re. 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 ﬁ re.

If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a ﬂ ame, 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 nonauthorized 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 3mm 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 personnel 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 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 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 thoroughly 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 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 ﬁ re.

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 recommended to use a gauge manifold with a high pressure display range of –0.1 to 5.3 MPa and a low pressure display range of –0.1 to 3.8 MPa.

Charging hose

To increase pressure resistance, the hose material and base size were changed. (The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.)

Vacuum pump

A conventional vacuum pump can be used by installing a vacuum pump adapter. Be sure that the pump oil does not backflow into the system. Use one capable for vacuum suction of –100.7 kPa (5 Torr, –755 mmHg).

Gas leakage detector

Special gas leakage detector for R410A refrigerant.

INSTALLATION MANUAL

PART NO. 9381279005

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 ........................................................................................................2

2.4. Optional parts .....................................................................................................3

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

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

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

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

4.1. Selecting an installation location ........................................................................4

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

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

5. PIPE INSTALLATION ............................................................................................... 6

5.1. Selecting the pipe material .................................................................................6

5.2. Pipe requirement ................................................................................................6

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

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

5.5. Installing heat insulation .....................................................................................7

6. MOUNTING THERMISTORS ....................................................................................7

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

7.1. Electrical requirement ......................................................................................... 8

7.2. Wiring method ....................................................................................................8

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

7.4. Connection of wiring .........................................................................................10

7.5. External input and external output (Optional parts) ..........................................12

8. FIELD SETTING ......................................................................................................15

8.1. Setting the address ...........................................................................................15

8.2. Dip switch setting .............................................................................................. 16

8.3. Function setting ................................................................................................16

9. TEST RUN ...............................................................................................................17

9.1. Test run using Outdoor unit (PCB) ...................................................................17

9.2. Test run using remote controller ....................................................................... 17

10. CHECK LIST (Example) ......................................................................................... 17

11. ERROR CODES ...................................................................................................... 17

12. OPERATIONS .........................................................................................................18

12.1. Analog external inputs ....................................................................................18

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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 ﬁ re.

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.

(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 gland (M10)

For cable holes

Cable gland (M16)

For cable holes

Cable gland (M20)

For cable holes

Blind bar

For mounting when not passing the cable through the cable gland

Cable tie

For securing the optional remote controller cable

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 temperature (For gas pipes)

Thermistor (Label: LIQ)

For measuring the liquid pipe temperature (For liquid pipes)

Thermistor holder pipe (Small)

For mounting the thermistor

Thermistor holder pipe (Large)

For mounting the thermistor

Name and Shape Q’ty Application

Thermistor spring (For small thermistor holder pipe)

For mounting the thermistor

Thermistor spring (For large thermistor 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) 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)

For mounting the EEV unit to the wall

Tapping Screw S (M4×L10)

For stacking multiple EEV unit

Rubber sheet

For mounting pipe joints

Pipe heat insulations

For mounting pipe joints

cable tie (Large)

For securing heat insulations

cable tie (Medium)

For securing cables

Seal

For pasting unused piping holes

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2.4. Optional parts

The following options are available. When installing, refer to the installation manual of each optional part.

Connectable Peripheral Devices

Model Name Notes

Wired Remote Controller UTY-RNKY *1, *2

Wired Remote Controller UTY-RNRY *1, *2

Wireless Remote Controller (IR receiver unit)

UTY-LNHY (UTB-YWC)

Group Remote Controller (via network converter)

UTY-CGGY (UTY-VGGXZ1)

Touch Panel Controller UTY-DTGY *2

Central Remote Controller UTY-DCGY *2

Network Convertor for LONWORKS® UTY-VLGX *2

BACnet® Gateway UTY-ABGX *2

System Controller UTY-APGX *2

System Controller Lite UTY-ALGX *2

Service Tool UTY-ASGX *2

Web Monitoring Tool 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 controller

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

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

(1) Product Lineup

Unit Name Model Name Environment speciﬁ cations

Control unit UTY-VDGX

• Temperature:

-20 to 46 °C

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

EEV unit

UTP-VX30A

UTP-VX60A

UTP-VX90A

(2) EEV unit Selection

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

• If the capacity class is 40 kW or 50 kW, 2 EEV units are connected (in parallel).

Capacity Class (kW) 5.0 6.3 8.0 10.0 12.5 EEV unit model No.

30 30 30 60 60

Cooling capacity (kW)

5.6

6.3 8 10 12.5

Heating capacity (kW)

6.3

7.1 9 11.2 14

Heat exchanger capacity

Refer to the Design &Technical manual.

Airﬂ ow rate (Reference) (m3/h)

1,060

1,200 1,520 1,600 2,000

Capacity range Cool (kW) 5.1~5.9 6.0~7.1 7.2~9.0 9.1~11.1

11.2~13.2

Heat (kW) 5.7~6.7 6.8~8.0 8.1~10.0

10.1~12.4 12.5~15.0 Evaporation temperature Refer to the Design &Technical manual. Condensation temperature Refer to the Design &Technical manual.

Capacity Class (kW) 14.0 20.0 25.0 40.0 50.0 EEV unit model No.

60 90 90 90+90 90+90

Cooling capacity (kW)

22.4 25 40 50.4

Heating capacity (kW)

25 28 45 56.5

Heat exchanger capacity

Refer to the Design &Technical manual.

Airﬂ ow rate (Reference) (m

/h)

2,240

3,560 4,000 6,400 8,000

Capacity range Cool (kW)

13.3~18.0 18.1~23.7 23.8~28.0 28.1~44.7 44.8~50.4

Heat (kW)

15.1~20.0 20.1~26.5 26.6~31.5 31.6~49.9 50.0~56.5 Evaporation temperature 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

EEV

unit

EEV

unit

Capacity Class (kW) 5.0 6.3 8.0 10.0 12.5 Pipe size Gas (a) (mm) 15.88 15.88 15.88 15.88 19.05

Liquid (b) (mm) 9.52 9.52 9.52 9.52 9.52 Liquid (c) (mm) — ————

Capacity Class (kW) 14.0 20.0 25.0 40.0 50.0 Pipe size Gas (a) (mm) 19.05 22.2 22.2 28.58 28.58

Liquid (b) (mm) 9.52 12.7 12.7 12.7 15.88 Liquid (c) (mm) — — — 12.7 12.7

Pipe length

(a)

(d)

(c)

(f)

(e)

(b)

Heat

Exchanger

Heat

Exchanger

Gas pipe Gas pipe

Liquid pipe

(a) ≤ 5 m (b) ≤ 2 m , (c) ≤ 2 m , (d) ≤ 2 m , (e) ≤ 2 m

(d) + (f) ≤ 5 m , (e) + (f) ≤ 5 m

Liquid pipe

EEV

unit

EEV

unit

3.2. System Design

3.2.1. Basic Refrigerating System Conﬁ guration

Using the DX-kit enables indoor units manufactured by other than Fujitsu general to be used in the Fujitsu general refrigerant system.

DX-kit*

Outdoor unit

Indoor unit

Indoor unit Indoor unit

* DX-kit = Control unit + EEV unit

3.2.2. Basic DX-kit System Conﬁ guration

(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 controller is not possible.

System Conﬁ guration 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

For control line details, see “External Input and External Output”.

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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 sufﬁ cient 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 ampliﬁ ed. (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

400 120 134

306

3 × Ø10

(Unit: mm)

400

251

Weight of the Control unit (kg)

UTY-VDGX 10

4.2.2. EEV unit

EEV unit Dimensions

221

203

159

4 × Ø11

8 × Ø5

22 31

58(120)(127)

168

212.4(104)

29.2

182

22.2

(78)

231

(Unit: mm)

Connection pipe diameter (mm)

Model A B Weight of the EEV unit (kg)

UTP-VX30A 9.52 9.52 UTP-VX30A 2

UTP-VX60A 9.52 9.52 UTP-VX60A 2

UTP-VX90A 12.7 12.7 UTP-VX90A 2

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 sufﬁ cient number of people and with sufﬁ cient equipment that is adequate for the weight of the unit. Performing such work by an insufficient number of people or with inadequate equipment could result in dropping of the unit or personal injury.

(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 conﬁ guration example is shown below.

System Conﬁ guration 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 = 200 mm or more

Liquid pipe

Gas pipe

4. INSTALLATION WORK

Correct initial installation location is important because it is difﬁ cult 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.

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, causing the parts to fail or the unit to leak water.

• Area ﬁ lled 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 ﬁ bers or ﬂ ammable dust, or volatile inﬂ ammables such as paint thinner or gasoline. If gas leaks and settles around the unit, it can cause a ﬁ re.

• 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 ﬂ ammable 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.)

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

(1) Use the 8 screws (accessories) to secure the secure ﬁ ttings (accessories).

Secure ﬁ tting (Accessories)

Screws M4×L10 (Accessories)

Tightening torque

M4 screw

0.8 to 2.8 Nm

(8 to 28 kgf·cm)

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

(1) If using 2 EEV units, stacking the 2 kits is recommended.

If stacking 2 EEV units, secure using the secure ﬁ ttings (accessories) and screws

(accessories).

Secure ﬁ tting (Accessories)

Screws M4×L10 (Accessories)

4.3.2.5. 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 (ﬁ eld supply) to the wall, and then secure the unit.

Screws M4×L16 (Accessories)

Method 1 Method 2

Nuts and washers (Field supply)

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

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)

Contorl

unit

200 mm or more

Service

space

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. Changing Pipe Orientation

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

(1) Remove the 4 screws and remove the cover. (2) Cut the cable tie ﬁ xing the cable. (3) Invert both the pipes and heat insulation. (4) Pass the cable tie (accessory) through the cable clamp, and ﬁ rmly secure the cable,

and then cut any unnecessary part of cable tie.

(5) Use the 4 screws to mount the cover.

Cable Cable

Cable clamp

Cable tie

Cable tie (accessory)

(2)

(1), (5)

Cover

Heat insulation

(4)

(3)

4.3.2.2. Pasting Seals to the piping holes

Use the seals (accessories) to cover any unused piping holes.

Seal (Accessories)

Seal

(Accessories)

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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 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.

• 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 [mm (in.)] Thickness [mm] Material

6.35 (1/4) 0.80

COPPER

JIS H3300 C1220T-O

or equivalent

9.52 (3/8) 0.80

12.70 (1/2) 0.80

15.88 (5/8) 1.00

19.05 (3/4) 1.20

22.22 (7/8) 1.00

COPPER

JIS H3300 C1220T-H

or equivalent

28.58 (1-1/8) 1.00

5.2. Pipe requirement

CAUTION

Refer to the Installation Manual of the outdoor unit for description of the length of connecting pipe or for difference of its elevation.

• 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 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 15 mm or thicker and if the expected humidity exceeds 80 %, use heat insulation that is 20 mm or thicker. If heat insulation is used that is not as thick as speciﬁ ed, 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 20 °C).

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 difﬁ cult to bend or stretch them any more. 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 refrigeration cycle, the internal pressure in the refrigeration cycle will become abnormally high and prevent the unit from exerting its full performance.

Apply nitrogen gas while brazing the pipes. Nitrogen gas pressure:

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

Pressure regulating valve

Cap

Nitrogen gas

Brazing area

If a pipe is brazed without applying nitrogen gas, it will create an oxidation ﬁ lm. This can degrade performance or damage the parts in the unit (such as the compressor or valves).

Do not use ﬂ ux to braze pipes. If the ﬂ ux is the chlorine type, it will cause the pipes to corrode. Furthermore, if the ﬂ ux contains ﬂ uoride, it will adversely affect the refrigerant pipe system such as by degrading the refrigerant oil.

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

Outer diameter of pipe

Connection Pipe (Liquid) 12.70 mm

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

(a) Connecting 1 EEV unit

Connection pipe (ﬁ eld supply)

(b) Connecting 2 EEV units

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

Relay pipes: Outside dimensions Φ12.7 mm (Field supply)

Branch pipes (Optional parts)

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C: Inlet air thermistor/D: Outlet air thermistor

Install in a location where the effects of heat sources such as heat exchangers and heaters, etc., are minimized as far as possible.

Inlet air thermistor (Accessories)

Outlet air thermistor (Accessories)

Air outletAir inlet

General indoor unit

7. ELECTRICAL WIRING

WARNING

Electrical work must be performed in accordance with this Manual by a person certiﬁ ed under the national or regional regulations. Be sure to use a dedicated circuit for the unit. An insufﬁ cient power supply circuit or improperly performed electrical work can cause serious accidents such as electric shock or ﬁ re.

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 manufacturer. Improper connections, insufﬁ cient insulation, or exceeding the allowable current can cause electric shock or ﬁ re.

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 ﬁ re.

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 ﬁ re.

Match the terminal board numbers and connection cable colors with those of the outdoor 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 ﬁ re.

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 ﬁ re 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 ﬁ re 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 ﬁ rmly to the terminal board. Imperfect installation may cause a ﬁ re.

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

Take special precaution for connection to the external controller (DDC, ﬁ eld supply). Make sure the wiring for the external input and output signals is correct. Miswiring of these cables could damage the entire system.

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.

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

Mounting thermistors to general indoor units

EEV

kit

Refrigerant ﬂ ow during cooling

Air inlet

Air outlet

Heat

Exchanger

General indoor unit

A: Heat exchanger inlet pipe

Braze a thermistor holder pipe (Ø 6.35, accessory) in front of the distributor branch. Use a thermistor spring (accessory) to tightly seal and secure the thermistor (Φ4, accessory) pipes.

(1) (2)

(3)

(1)

(2)

(3)

(1) Thermistor holder pipe

(Ø 6.35 mm) (2) Thermistor (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 9.53, accessory) to the heat exchanger outlet pipe. Use a thermistor spring (accessory) to tightly seal and secure the thermistor (Ø6, accessory) pipes.

(1)

(2)

(3)

(2)

(3)

(1) Thermistor holder pipe

(Ø 9.53 mm) (2) Thermistor (Ø 6 mm) (3) Thermistor spring

Heat Exchanger

En-8

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 cable by 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 speciﬁ cations 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 speciﬁ cations for that device.

Voltage rating 230 V

Operating range 198 to 264 V

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

• Speciﬁ cations 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 speciﬁ cations 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 DX-kits to satisfy conditions A and B below.

A. Current breaker requirements

Model MCA MFA

UTY-VDGX 0.096 A 20 A

MCA: Minimum Circuit Ampacity MFA: Main Fuse Ampacity When the power crossover wiring is done, make it so that the total of the MCA of the connected 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”

30 mA, 0.1 sec or less 44 or less **

100 mA, 0.1 sec or less 45 to 128

* Heat pump type: indoor units, Heat recovery type: indoor units and RB units. ** If the total number of units connected to the breaker exceeds 44, either add a 30mA

breaker, or use breakers with a greater capacity.

7.1.1. Cable speciﬁ cations

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

7.2. Wiring method

EXAMPLE

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 Breaker

*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".

(Crossover wiring of power supply)

Breaker

DX-kit (Control unit)

Power supply

Pull box

Power supply

Power supply Power supply

Indoor unit Indoor unit

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 ﬁ gure below.

Power supply cable

Earth (Ground)

cable

20 mm

30 mm

Drain pump signal cable Decide the peeling length of the covering for the drain pump signal cable according to the conditions for connecting to the terminal.

En-9

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 speciﬁ ed 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 ﬁ x 2 power supply cables with 1 screw.

Strip 25 mm

Loop

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 ﬁ gure 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 speciﬁ ed 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 ﬁ x 2 power supply cables with 1 screw.

Sleeve

Strip 10 mm

Screw with special washer

Ring terminal

Cable

Terminal block

Cable

Ring terminal

WARNING

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

Tightening torque

M4 screw

(Power supply/L, N, GND)

1.2 to 1.8 N·m

(12 to 18 kgf·cm)

7.3.2. Transmission cable, Remote controller cable and External interface cable

Transmission cable

Shielded cable (no ﬁ lm)

25 mm

40 mm

Remote controller cable

25 mm

For 3-wire type

25 mm

For 2-wire type

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 speciﬁ ed torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage inside the unit.

Tightening torque

M3 screw

(Transmission/X1, X2)

(Remote controller/ Y1, Y2, Y3)

0.5 to 0.6 N·m (5 to 6 kgf·cm)

CAUTION

To peel the ﬁ lm 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.

En-10

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 (ﬁ eld supply) multi-conductor cable with more wires, and bundle multiple cables into one.

• Maximum length of cable is 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

·Power supply terminal

·Drain pump signal terminal

·Transmission terminal

·Remote controller terminal

·External interface terminal

Cable holes with mounted cable glands (accessories)

Hole No.

Cable gland

type

Diameter

(mm)

Insertable cable

dimensions (mm)

H2 Large Φ20.0 Φ6 to 12

H5, H6, H7, H9, H10 Medium Φ16.2 Φ4 to 8

H1, H3, H4, H8 Small Φ10.2 Φ3 to 6

H10

H6 H7

Terminal

No.

Terminal Name Hole No. Connection

Recommended

cable size

(mm2)

Cable type Speciﬁ cations

P1 POWER SUPPLY H2 Power supply 2.5 (AWG14) Type245 IEC57 or

equivalent

1ø 50 Hz 198 to 264 V 2 Cable + earth (ground)

TR1 TRANSMISSION H3 Transmission line 0.33 (AWG22) LONWORKS compatible

cable

22 AWG LEVEL 4 (NEMA) non-polar 2 core, twisted pair solid core diameter

0.65 mm

R1 REMOTE CONTROLLER H4

2-wire type remote controller

0.33 to 1.25 (AWG22 to 16)

Sheathed PVC cable Non polar 2 core

3-wire type remote controller 0.33 (AWG22) Sheathed PVC cable Polar 3 core

D1 DRAIN PUMP H1 Drain pump 0.5 (AWG20) Type245 IEC57 or

equivalent

―

T1 THERMISTOR (GAS) H5 Thermistor mounted to the gas

pipe

0.33 (AWG22) Sheathed PVC cable Relay the multi-conductor 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 - Green 5 - Yellow 6 - White

H9 Electronic expansion valve 1 0.33 (AWG22) Sheathed PVC cable ―

EV2 EEV2 H10 Electronic expansion valve 2 0.33 (AWG22) Sheathed PVC cable Use the electronic

expansion valves only when two units are connected

EX1 ON/OFF SIGNAL

(OUTPUT)

External output / Digital

H6 External controller 0.33 (AWG22) Sheathed PVC cable

―

EX2 ERROR SIGNAL

(OUTPUT)

External output / Digital

EX3 FAN SIGNAL External output

/ Digital

EX4 DEFROST SIGNAL External output

/ Digital

EX5 THERMOSTAT ON/OFF

SIGNAL

External output / Digital

EX6 ON/OFF SIGNAL (INPUT) External input

/ Digital

H7 External controller 0.33 (AWG22) Sheathed PVC cable ERROR SIGNAL

OFF(Open)= Error ON(Short)= Normal

EX7* 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

EX10 FLOAT SW SIGNAL External input

/ Digital

H8 Float switch mounted to the heat

exchanger

0.33 (AWG22) Sheathed PVC cable

―

EX7*: The factory default is shorted between the terminals by the cables. If there is a malfunction with an external device, using this external input is recommended in order to protect the

refrigerant system.

En-11

7.4.2. Connecting the Cables

CAUTION

Pay attention to the following during installation. Failure to do so may cause water penetration damage.

• Use the attached waterproof cable gland.

• Multiple differently-shaped waterproof cable glands are attached, so make sure to use the waterproof cable gland suited to the cable hole.

• Make sure to ﬁ rmly secure the waterproof cable gland to the cable hole.

• When attaching the cable gland, using a tightening torque that is less than the recommended value may cause water penetration. Using a tightening torque that is more than the recommended value may cause damage to the cable gland.

(1) Connect the cable.

(i) As shown below, pass the cable through the cable hole on the bottom of the control

unit and through the cable gland (accessories), then connect the cable to the terminal block.

(ii) Attach the cable gland firmly to the

unit.

(iii) Attach the cable firmly to the cable

gland.

Terminal block Terminal block

(i) (ii) (iii)

Terminal block

(2) Secure the cable.

• Using power supply cables Secure the cable using the cable clamp mounted inside the device.

• Using other than power supply cables Secure the cable using the cable ties (With stopper, accessories).

Cable clamp

Cable ties (With stopper, accessories)

• Unused holes Mount blind bars instead of cables to the cable glands.

(i) Insert the blind bar into the cable gland. (ii) Firmly secure the blind bar to the cable gland. (iii) Mount the cable gland to the hole, and secure ﬁ rmly.

Blind bar

(i) (ii) (iii)

Tightening torque for cable gland (recommended value)

For M10 0.5 N·m 0.5 N·m

For M16 1.0 N·m 1.5 N·m

For M20 1.0 N·m 2.0 N·m

• Outdoor cable connections

(1) Thermistor cable connections

• Connect the thermistor cables to the relay multi-conductor cables as shown in the diagram before passing through the hole.

• Make sure to use only weatherproof relay cables.

Terminal block

Thermistor

Relay cable

Cable connector

(2) Electronic expansion valve cable connections

Make sure to observe the following installation conditions

• Avoid locations in direct sunlight

• Avoid locations with wind and rain

• Avoid locations with water contact

Mount the wired remote controller to the inside of the control unit

(1) Processing the remote controller cable

(Unit: mm)

For 2-wire type remote controller (ﬁ eld supply)

2510

Refer to the installation manual of the remote controller.

750← To control unit To remote controller →

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

750

← To control unit To remote controller →

Refer to the installation manual of the remote controller.

(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.

(Unit: mm)

150

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 (Accessories)

Remote controller cable

Rear case of the remote controller

En-12

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

Y1 Y2 Y3Y1 Y2

Non-polar

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 con-

troller does not work.

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

Factory setting : 2WIRE

DIP switch

(SW1)

• When using the wired remote controller, if the temperature drops below 0°C, the LCD display may become dim, the response may become slower, and the time accuracy of the clock will be lost.

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*

External input terminal

(Dry contact terminal)

External input terminal

(Apply voltage terminal)

External output terminal

CNA01

CNA04

CNA02

CNA07

CNB01

Controller PCB

CNA03

CNA06

• 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]).

Power supply DC 12 to 24 V

Load resistance

connected unit

Input 1Input 2Input 3

Control unit

Terminal board

P.C.B.

CNA01

CNA06

CNA03

Make the power supply DC12 to 24V. Select a power supply capacity with an ample

surplus for the connected load. Do not impress a voltage exceeding 24V across pins 1-2, and 1-3. *a The allowable current is DC 5mA to 10mA. (Recommended: DC5mA) Provide a load resistance such that the current becomes DC10mA or less. Select very low current use contacts (usable at DC12V, DC1mA or less). *b The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.

En-13

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.

Power supply DC 12 to 24 V

Load resistance

connected unit

Input

device 2

Control unitControl unit Control unit

Input

device 1

Terminal board

P.C.B.

CNA01

● 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]).

Control unit

Terminal board

P.C.B.

*c Ch 4

*c Ch 3

*c Ch 1

*c Ch 2

GND

CNA02

CNA04

CNA07

connected unit

*c Select very low current use contacts (usable at DC12V, DC1mA 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 devi ce 2

Input devi ce 1

K1 - K6: Relay (Device f or DC Current)

P.C . B

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.

Pulse

The widt h of pulse must be lon ger than 200m sec.

Edge

DIP switc h [Set 2 -2] Input signal type

OFF (Factor y setting) Edge

ON Pulse

(1) ON/OFF SIGNAL (INPUT)

[For the “Edge” input method, function settings “60”=00]

Terminal block Input signal Command

ON/OFF SIGNAL (INPUT)

Pin1 to Pin3

OFF → ON Operation

ON → OFF Operation stopped

[For the “Edge” input method, function settings “60”=01]

Terminal block Input signal Command

ON/OFF SIGNAL (INPUT)

Pin1 to Pin3

OFF → ON Cooling operation

ON → OFF Operation stopped

[For the “Pulse” input method]

Terminal block Input signal Command

ON/OFF SIGNAL (INPUT)

Pin1 to Pin2 OFF → ON Operation

Pin1 to Pin3 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)

Pin1 to Pin2

ON Normal

OFF Error

(3) COOL/HEAT SIGNAL

Switch the operation mode (heating/cooling).

[“Edge” input method, func tion set tings “ 60”= 00]

Terminal block Input signal Command

COOL/HEAT SIGNAL

Pin1 to Pin2

OFF → ON Heat

ON → OFF Cool

[“Edge” input method, function settings “60”=01]

Terminal block Input signal Command

COOL/HEAT SIGNAL

Pin1 to Pin2

OFF → ON Heating operation

ON → OFF Operation stopped

Note

• 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 mins. 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 SIGNAL Pin1 to Pin3

OFF → ON Protection operation

ON → OFF Normal

En-14

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

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 (DC12V) Operation

2 ERROR SIGNAL ON (Open) OFF Normal

OFF (Short) ON (DC12V) Error

3 FAN SIGNAL ON (Open) OFF FAN off

OFF (Short) ON (DC12V) FAN on

4 DEFROST SIGNAL ON (Open) OFF Normal

OFF (Short) ON (DC12V) Defrosting

5 THERMOSTAT

ON/OFF SIGNAL

ON (Open) OFF Thermostat Off

OFF (Short) ON (DC12V) Thermostat On

6 DRAIN PUMP

SIGNAL (*1)

OFF Drain pump Off

ON (AC 230 V) Drain pump On

● Selec t 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 220 to 240 V /1A max or DC 30 V max /1A Max

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

• Output voltage: Hi DC12V±2V, 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.

(1) 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 220 to 240 V / 1A max DC 30 V max / 1A max

When using a drain pump, connect relay that is compatible with AC power supply. (ﬁ eld supply)

• 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

(2) Type-ii: Using a power supply from the DX-kit control unit

Terminal 12 VDC 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

CNB01

Power supply for drain pump

When using a drain pump, connect relay that is compatible with AC power supply. (ﬁ eld supply)

• 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)

About the cable name and cable color (a) Connection cable 1:

(a1) Brown, (a2) Red (a3) Orange, (a4) Yellow (a5) Green, (a6) Blue

(b) Connection cable 2:

Brown

(d) Connection cable 4:

Brown

(e) Connection cable 5:

Brown

CNB01 CN800

CN801 CN802 CNB01 Cable clamps

• If connecting an connection cables (accessories) to a terminal, make sure to match the number of the label afﬁ xed to the cable with the terminal number.

En-15

8. FIELD SETTING

Dip switch

[LED1 indicator]

ON: Normal operation; Flashing: Error

SET*-SW1 SET*-SW2 SET*-SW3 SET*-SW4

Dip switch

Rotary switch

IU AD ×10

IU AD ×1

REF AD ×1

REF AD ×10

RC AD ×1

LED1

SET2

SET3

SET4

SET1

Dip switch

CAUTION

Be sure to turn OFF the power before performing the ﬁ eld 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 speciﬁ ed 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 *1

0 to 63

Setting

example

IU AD × 10 IU AD × 1

Refrigerant circuit

address *2

0 to 99

Setting

example

REF AD × 10

REF AD × 1

*1) Indoor unit address

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.

*2) 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.

• 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

Rotary

Address

Rotary

Switch Setting Switch Setting

Refrigerant circuit

REF AD SW

Indoor unit

IU AD SW

× 10 × 1 × 10 × 1

000000 101101 202202 303303 404404 505505 606606 707707 808808

909909 10 1 0 10 0 0 11 1 1 11 1 1 12 1 2 12 1 2

. . .

99 9 9 63 6 3

Do not set the indoor unit address (IU AD SW) at 64 to 99. It may result in failure.

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. 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

address 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

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

RC AD SW 01234567

Address 01234567

RC AD SW 89ABCDEF

Address 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 conﬁ gured, you do not

need to conﬁ gure them.

If conﬁ guring manually, it is necessary to conﬁ gure 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

(1) Capacity settings of indoor units to be controlled

The capacity of indoor units to be controlled is set.

Indoor unit

capacity

Dip switch setting (*: factory setting)

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

5.0 kW * ON OFF ON OFF OFF

6.3 kW ON OFF ON OFF ON

8.0 kW ON ON ON OFF OFF

10.0 kW OFF ON ON OFF ON

12.5 kW OFF ON OFF ON OFF

14.0 kW ON ON OFF ON OFF

20.0 kW ON OFF ON ON OFF

25.0 kW OFF ON ON ON OFF

40.0 kW ON OFF OFF ON ON

50.0 kW OFF ON OFF ON ON Not described

above

Settings prohibited

(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.

(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 performance

(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.

(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, conﬁ gure a bypass circuit in the RB unit when the heat thermostat is OFF.

• 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.

DIP switch SET4-3 OFF (factory setting) No bypass ON With bypass

(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).

• 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".

DIP switch SET4-4 Administrative indoor unit settings OFF (factory setting) OFF ON ON

• 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.

• 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.

(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 ﬁ lter cleaning interval notiﬁ - cation. If the notiﬁ cation is too early, change to setting 01. If the notiﬁ cation is too late, change to setting 02.

01 Longer

02 Shorter

Filter

indicator

action

00 Enable

○

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

01 Disable

Display only on

central remote

controller

Auto

restart

00 Enable

Enable or disable automatic system restart after a power outage.

01 Disable

○

Cool Air

Prevention

00 Super low

Restrain the cold airﬂ ow with making the airﬂ ow 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

terminals

00 Mode 0

○

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.

01 Mode 1

Selecting

stop operation during 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

En-17

9. TEST RUN

The test run function will force the outdoor unit to operate. When performing the test run, conﬁ rm 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 correctly?

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 completed?

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 operation 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) ﬂ ashes.

• “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 optional 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 communication error

(1) (4)

Network communication error

(1) (6)

Peripheral unit communication error

(2) (6)

Indoor unit address setting error

Error indications

Wired Remote

Controller Error

code

Error contents

OPERATION

lamp (green)

TIMER lamp

(orange)

FILTER

lamp (red)

(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 controller) error

(4) (2)

Indoor unit heat ex. temp. thermistor error

(4) (10)

Indoor unit air temp. thermistor 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 : 0.5s ON / 0.5s OFF : 0.1s ON / 0.1s OFF ( ) : Number of ﬂ ashing

Wired Remote Controller Display

UTY-RNKY / UTY-RNKG / UTY-RNKYT (3-wire type)

UTY-RNRY / UTY-RNRG (2-wire type)

Error code

Error icon

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.

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

UTY-RLRY / UTY-RLRG (2-wire type)

Error code

Error icon

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

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 10V.

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 5V

Terminal block

PC board

VR700

Control unit (DX-kit)

VR700

• Compensation method

i) Connect the power supply adjusted to output DC 5V 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 20°C.

(3) 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 (°C)=2.5 × Ain + 7.5

Ain= Input voltage (1.0 to 9.0V)

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

30°C 30°C

25°C

28°C

18°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

10°C

14°C

17°C

Cooling

Input voltage

Operation

temperature

Operation

temperature

Input voltage

Heating

(4) 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% ﬁ xed

If Ain>8.9 V, C=100% ﬁ xed

Input voltage

Required operation

performance

1.3 V 8.9 V

100%

Fujitsu UTP-VX60A, UTP-VX30A, UTP-VX90A, UTY-VDGX Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual