Daikin FAA71BUV1B, FAA100BUV1B Installer reference guide

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Installer and user reference guide

Split system air conditioner

FAA71BUV1B FAA100BUV1B

Table of contents

1 About the documentation 5

1.1 About this document ...................................................................................................................................................... 5

1.2 Meaning of warnings and symbols................................................................................................................................. 6

2 General safety precautions 8

2.1 For the installer............................................................................................................................................................... 8

2.1.1 General ........................................................................................................................................................... 8

2.1.2 Installation site ............................................................................................................................................... 9

2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 12

2.1.4 Electrical ......................................................................................................................................................... 13

3 Specific installer safety instructions 16

For the user 18

4 User safety instructions 19

4.1 General............................................................................................................................................................................ 19

4.2 Instructions for safe operation ....................................................................................................................................... 20

5 About the system 25

5.1 System layout.................................................................................................................................................................. 25

6 User interface 27

7 Before operation 28

8 Operation 29

8.1 Operation range.............................................................................................................................................................. 29

8.2 About operation modes.................................................................................................................................................. 30

8.2.1 Basic operation modes ................................................................................................................................... 30

8.2.2 Special heating operation modes................................................................................................................... 31

8.2.3 Airflow direction ............................................................................................................................................. 31

8.3 To operate the system.................................................................................................................................................... 32

9 Energy saving and optimum operation 33

10 Maintenance and service 34

10.1 Precautions for maintenance and service ...................................................................................................................... 34

10.2 Cleaning the unit ............................................................................................................................................................. 35

10.2.1 To clean the air outlet and exterior ............................................................................................................... 35

10.2.2 To clean the front panel................................................................................................................................. 35

10.2.3 To clean the air filter ...................................................................................................................................... 36

10.3 Maintenance before a long stop period......................................................................................................................... 37

10.4 Maintenance after a long stop period............................................................................................................................ 37

10.5 About the refrigerant...................................................................................................................................................... 38

11 Troubleshooting 39

11.1 Symptoms that are NOT system malfunctions............................................................................................................... 40

11.1.1 Symptom: The system does not operate....................................................................................................... 40

11.1.2 Symptom: The fan speed does not correspond to the setting...................................................................... 40

11.1.3 Symptom: The fan direction does not correspond to the setting................................................................. 40

11.1.4 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 41

11.1.5 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 41

11.1.6 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 41

11.1.7 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 41

11.1.8 Symptom: Noise of air conditioners (Indoor unit, outdoor unit).................................................................. 41

11.1.9 Symptom: Dust comes out of the unit........................................................................................................... 41

11.1.10 Symptom: The units can give off odours ....................................................................................................... 41

Installer and user reference guide

12 Relocation 42

13 Disposal 43

For the installer 44

14 About the box 45

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

Table of contents

14.1 Overview: About the box ................................................................................................................................................ 45

14.2 Indoor unit ...................................................................................................................................................................... 45

14.2.1 To unpack and handle the unit ...................................................................................................................... 45

14.2.2 To remove the accessories from the indoor unit .......................................................................................... 46

15 About the units and options 47

15.1 Identification ................................................................................................................................................................... 47

15.1.1 Identification label: Indoor unit ..................................................................................................................... 47

15.2 About the indoor unit ..................................................................................................................................................... 47

15.3 System layout .................................................................................................................................................................. 48

15.4 Combining units and options .......................................................................................................................................... 49

15.4.1 Possible options for the indoor unit............................................................................................................... 49

16 Unit installation 50

16.1 Preparing the installation site......................................................................................................................................... 50

16.1.1 Installation site requirements of the indoor unit .......................................................................................... 50

16.2 Opening and closing the unit .......................................................................................................................................... 52

16.2.1 To remove the front panel............................................................................................................................. 52

16.2.2 To re-install the front panel ........................................................................................................................... 52

16.2.3 To remove the front grille.............................................................................................................................. 52

16.2.4 To re-install the front grille ............................................................................................................................ 53

16.2.5 To open the service cover.............................................................................................................................. 54

16.2.6 To close the service cover.............................................................................................................................. 54

16.3 Mounting the indoor unit ............................................................................................................................................... 54

16.3.1 To install the mounting plate......................................................................................................................... 54

16.3.2 To drill a wall hole........................................................................................................................................... 56

16.3.3 To remove the pipe port cover ...................................................................................................................... 57

16.3.4 To hook the unit on the mounting plate........................................................................................................ 58

16.3.5 To pass the pipes through the wall hole........................................................................................................ 58

16.3.6 To provide drainage........................................................................................................................................ 59

17 Piping installation 62

17.1 Preparing refrigerant piping ........................................................................................................................................... 62

17.1.1 Refrigerant piping requirements.................................................................................................................... 62

17.1.2 Refrigerant piping insulation.......................................................................................................................... 63

17.2 Connecting the refrigerant piping .................................................................................................................................. 63

17.2.1 About connecting the refrigerant piping....................................................................................................... 63

17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 63

17.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 64

17.2.4 Pipe bending guidelines ................................................................................................................................. 65

17.2.5 To flare the pipe end...................................................................................................................................... 65

17.2.6 To connect the refrigerant piping to the indoor unit.................................................................................... 66

18 Electrical installation 67

18.1 About connecting the electrical wiring .......................................................................................................................... 67

18.1.1 Precautions when connecting the electrical wiring....................................................................................... 67

18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 68

18.1.3 Specifications of standard wiring components.............................................................................................. 69

18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 69

19 Finishing the indoor unit installation 73

19.1 To fix the unit on the mounting plate ............................................................................................................................ 73

20 Commissioning 74

20.1 Overview: Commissioning .............................................................................................................................................. 74

20.2 Precautions when commissioning .................................................................................................................................. 74

20.3 Checklist before commissioning ..................................................................................................................................... 74

20.4 To perform a test run...................................................................................................................................................... 75

21 Configuration 76

21.1 Field setting ..................................................................................................................................................................... 76

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

22 Hand-over to the user 80

23 Troubleshooting 81

23.1 Solving problems based on error codes ......................................................................................................................... 81

23.1.1 Error codes: Overview.................................................................................................................................... 81

24 Disposal 82

25 Technical data 83

25.1 Wiring diagram................................................................................................................................................................ 83

25.1.1 Unified wiring diagram legend....................................................................................................................... 83

Installer and user reference guide

Table of contents

26 Glossary 86

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

1 About the documentation

1.1 About this document

Target audience

Authorised installers + end users

INFORMATION

This appliance is intended to be used by expert or trained users in shops, in light industry, and on farms, or for commercial and household use by lay persons.

WARNING

Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard.

Documentation set

1 | About the documentation

This document is part of a documentation set. The complete set consists of:

▪ General safety precautions:

- Safety instructions that you must read before installing

- Format: Paper (in the box of the indoor unit)

▪ Indoor unit installation and operation manual:

- Installation and operation instructions

- Format: Paper (in the box of the indoor unit)

▪ Installer and user reference guide:

- Preparation of the installation, good practices, reference data,…

- Detailed step-by-step instructions and background information for basic and

advanced usage

- Format: Digital files on http://www.daikineurope.com/support-and-manuals/

product-information/

Latest revisions of the supplied documentation may be available on the regional Daikin website or via your dealer.

The original documentation is written in English. All other languages are translations.

Technical engineering data

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

▪ A subset of the latest technical data is available on the regional Daikin website

(publicly accessible).

▪ The full set of latest technical data is available on the Daikin Business Portal

(authentication required).

Installer and user reference guide

1 | About the documentation

1.2 Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

DANGER: RISK OF ELECTROCUTION

Indicates a situation that could result in electrocution.

DANGER: RISK OF BURNING/SCALDING

Indicates a situation that could result in burning/scalding because of extreme hot or cold temperatures.

DANGER: RISK OF EXPLOSION

Indicates a situation that could result in explosion.

WARNING

Indicates a situation that could result in death or serious injury.

WARNING: FLAMMABLE MATERIAL

CAUTION

Indicates a situation that could result in minor or moderate injury.

NOTICE

Indicates a situation that could result in equipment or property damage.

INFORMATION

Indicates useful tips or additional information.

Symbols used on the unit:

Symbol Explanation

Before installation, read the installation and operation manual, and the wiring instruction sheet.

Before performing maintenance and service tasks, read the service manual.

For more information, see the installer and user reference guide.

Installer and user reference guide

The unit contains rotating parts. Be careful when servicing or inspecting the unit.

Symbols used in the documentation:

Symbol Explanation

Indicates a figure title or a reference to it.

Example: " 1–3 Figure title" means "Figure 3 in chapter 1".

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

1 | About the documentation

Symbol Explanation

Indicates a table title or a reference to it.

Example: " 1–3 Table title" means "Table 3 in chapter 1".

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

2 | General safety precautions

2 General safety precautions

2.1 For the installer

2.1.1 General

If you are NOT sure how to install or operate the unit, contact your dealer.

DANGER: RISK OF BURNING/SCALDING

▪ Do NOT touch the refrigerant piping, water piping or internal parts during and

immediately after operation. It could be too hot or too cold. Give it time to return to normal temperature. If you MUST touch it, wear protective gloves.

▪ Do NOT touch any accidental leaking refrigerant.

WARNING

Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin.

WARNING

Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).

CAUTION

Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system.

WARNING

Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible risk: suffocation.

WARNING

Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire.

CAUTION

Do NOT touch the air inlet or aluminium fins of the unit.

Installer and user reference guide

CAUTION

▪ Do NOT place any objects or equipment on top of the unit. ▪ Do NOT sit, climb or stand on the unit.

In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods,…

Also, at least, following information MUST be provided at an accessible place at the product:

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

2.1.2 Installation site

2 | General safety precautions

▪ Instructions for shutting down the system in case of an emergency

▪ Name and address of fire department, police and hospital

▪ Name, address and day and night telephone numbers for obtaining service

In Europe, EN378 provides the necessary guidance for this logbook.

▪ Provide sufficient space around the unit for servicing and air circulation.

▪ Make sure the installation site withstands the weight and vibration of the unit.

▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.

▪ Make sure the unit is level.

Do NOT install the unit in the following places:

▪ In potentially explosive atmospheres.

▪ In places where there is machinery that emits electromagnetic waves.

Electromagnetic waves may disturb the control system, and cause malfunction of the equipment.

▪ In places where there is a risk of fire due to the leakage of flammable gases

(example: thinner or gasoline), carbon fibre, ignitable dust.

▪ In places where corrosive gas (example: sulphurous acid gas) is produced.

Corrosion of copper pipes or soldered parts may cause the refrigerant to leak.

Instructions for equipment using R32 refrigerant

WARNING

▪ Do NOT pierce or burn. ▪ Do NOT use means to accelerate the defrosting process or to clean the

equipment, other than those recommended by the manufacturer.

▪ Be aware that R32 refrigerant does NOT contain an odour.

WARNING

The appliance shall be stored so as to prevent mechanical damage and in a wellventilated room without continuously operating ignition sources (example: open flames, an operating gas appliance or an operating electric heater) and have a room size as specified below.

WARNING

Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

2 | General safety precautions

WARNING

If one or more rooms are connected to the unit using a duct system, make sure:

▪ there are no operating ignition sources (example: open flames, an operating gas

appliance or an operating electric heater) in case the floor area is less than the minimum floor area A (m²).

▪ no auxiliary devices, which may be a potential ignition source, are installed in the

duct work (example: hot surfaces with a temperature exceeding 700°C and electric switching device);

▪ only auxiliary devices approved by the manufacturer are used in the duct work; ▪ air inlet AND outlet are connected directly to the same room by ducting. Do NOT

use spaces such as a false ceiling as a duct for the air inlet or outlet.

NOTICE

▪ Precautions shall be taken to avoid excessive vibration or pulsation to

refrigeration piping.

▪ Protection devices, piping and fittings shall be protected as far as possible against

adverse environmental effects.

▪ Provision shall be made for expansion and contraction of long runs of piping. ▪ Piping in refrigerating systems shall be designed and installed such as to minimise

the likelihood of hydraulic shock damaging the system.

▪ The indoor equipment and pipes shall be securely mounted and guarded such

that accidental rupture of equipment or pipes cannot occur from events such as moving furniture or reconstruction activities.

CAUTION

Do NOT use potential sources of ignition in searching for or detection of refrigerant leaks.

NOTICE

▪ Do NOT re-use joints and copper gaskets which have been used already. ▪ Joints made in installation between parts of refrigerant system shall be accessible

for maintenance purposes.

Installation space requirements

WARNING

This appliance contains R32 refrigerant. For the minimum floor area of the room in which the appliance is stored refer to installation and operation manual of the outdoor unit.

NOTICE

▪ Pipework shall be protected from physical damage. ▪ Installation of pipework shall be kept to a minimum.

To determine the minimum floor area

Installer and user reference guide

1 Determine the total refrigerant charge in the system (= factory refrigerant

charge + additional refrigerant amount charged).

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

2 | General safety precautions

Contains fluorinated greenhouse gases

tCO2eq

1000

GWP × kg

GWP: xxx

R32

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

340

350

360

370

380

390

400

410

420

430

440

450

460

470

480

490

500

510

520

530

540

550

560

570

580

590

600

610

620

630

640

650

660

670

680

690

700

710

720

730

740

750

760

770

1.843

9.55

2.21.8

2.4 2.8 3.2 3.6 4 4.4 4.8 5.2 5.6 6 6.4 6.8 7.2 7.6 8 8.4 8.8 9.22

2.6 3 3.4 3.8 4.2

4.6

5 5.4 5.8 6.2 6.6 7 7.4 7.8 8.2 8.6 9 9.4

Floor-standing unit

(c)

Wall-mounted unit

(b)

Ceiling-mounted unit

(a)

m [kg]

min

]

Ceiling-mounted

unit

(a)

4.6 13.4

4.6 180

4.8 14.6

4.8 196

5.0 15.8

5.0 213

≤1.842 —

5.2 17.1

≤1.842 —

5.2 230

1.843 3.64

5.4 18.5

1.843 28.9

5.4 248

2.0 3.95

5.6 19.9

2.0 34.0

5.6 267

2.2 4.34

5.8 21.3

2.2 41.2

5.8 286

2.4 4.74

6.0 22.8

2.4 49.0

6.0 306

2.6 5.13

6.2 24.3

2.6 57.5

6.2 327

2.8 5.53

6.4 25.9

2.8 66.7

6.4 349

3.0 5.92

6.6 27.6

3.0 76.6

6.6 371

3.2 6.48

6.8 29.3

3.2 87.2

6.8 394

3.4 7.32

7.0 31.0

3.4 98.4

7.0 417

3.6 8.20

7.2 32.8

3.6 110

7.2 441

3.8 9.14

7.4 34.7

3.8 123

7.4 466

4.0 10.1

7.6 36.6

4.0 136

7.6 492

4.2 11.2

7.8 38.5

4.2 150

7.8 518

4.4 12.3

4.4 165

m (kg)

min

(m2)

4.6 20.0

4.8 21.8

5.0 23.6

≤1.842 —

5.2 25.6

1.843 4.45

5.4 27.6

2.0 4.83

5.6 29.7

2.2 5.31

5.8 31.8

2.4 5.79

6.0 34.0

2.6 6.39

6.2 36.4

2.8 7.41

6.4 38.7

3.0 8.51

6.6 41.2

3.2 9.68

6.8 43.7

3.4 10.9

7.0 46.3

3.6 12.3

7.2 49.0

3.8 13.7

7.4 51.8

4.0 15.1

7.6 54.6

4.2 16.7

7.8 57.5

4.4 18.3

8 40.5

8.2 42.6

8.4 44.7

8.6 46.8

8.8 49.0 9 51.3

9.2 53.6

9.4 55.9

9.55 57.7

8 60.5

8.2 63.6

8.4 66.7

8.6 69.9

8.8 73.2 9 76.6

9.2 80.0

9.4 83.6

9.55 86.2

8 545

8.2 572

8.4 601

8.6 629

8.8 659 9 689

9.2 720

9.4 752

9.55 776

Wall-mounted

unit

(b)

m (kg)

min

(m2)

Floor-standing

unit

(c)

m (kg)

min

(m2)

2 Determine which graph or table to use.

▪ For indoor units: Is the unit ceiling-mounted, wall-mounted or floor-

standing?

▪ For outdoor units installed or stored indoors, this depends on the installation

height:

If the installation height is… Then use the graph or table for…

<1.8m Floor-standing units

1.8≤x<2.2m Wall-mounted units

≥2.2m Ceiling-mounted units

3 Use the graph or table to determine the minimum floor area.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

m Total refrigerant charge in the system

Minimum floor area

min

(a) Ceiling-mounted unit (= Ceiling-mounted unit) (b) Wall-mounted unit (= Wall-mounted unit) (c) Floor-standing unit (= Floor-standing unit)

Installer and user reference guide

2 | General safety precautions

2.1.3 Refrigerant — in case of R410A or R32

If applicable. See the installation manual or installer reference guide of your application for more information.

NOTICE

Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard.

NOTICE

Make sure the field piping and connections are NOT subjected to stress.

WARNING

During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit).

WARNING

Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks:

▪ Excessive refrigerant concentrations in a closed room can lead to oxygen

deficiency.

▪ Toxic gas might be produced if refrigerant gas comes into contact with fire.

DANGER: RISK OF EXPLOSION

Pump down – Refrigerant leakage. If you want to pump down the system, and there

is a leak in the refrigerant circuit:

▪ Do NOT use the unit's automatic pump down function, with which you can collect

all refrigerant from the system into the outdoor unit. Possible consequence: Selfcombustion and explosion of the compressor because of air going into the operating compressor.

▪ Use a separate recovery system so that the unit's compressor does NOT have to

operate.

WARNING

ALWAYS recover the refrigerant. Do NOT release them directly into the environment. Use a vacuum pump to evacuate the installation.

NOTICE

After all the piping has been connected, make sure there is no gas leak. Use nitrogen to perform a gas leak detection.

NOTICE

▪ To avoid compressor breakdown, do NOT charge more than the specified amount

of refrigerant.

▪ When the refrigerant system is to be opened, refrigerant MUST be treated

according to the applicable legislation.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

2 | General safety precautions

WARNING

Make sure there is no oxygen in the system. Refrigerant may only be charged after performing the leak test and the vacuum drying.

Possible consequence: Self-combustion and explosion of the compressor because of oxygen going into the operating compressor.

▪ In case recharge is required, see the nameplate of the unit. It states the type of

refrigerant and necessary amount.

▪ The unit is factory charged with refrigerant and depending on pipe sizes and pipe

lengths some systems require additional charging of refrigerant.

▪ Only use tools exclusively for the refrigerant type used in the system, this to

ensure pressure resistance and prevent foreign materials from entering into the system.

▪ Charge the liquid refrigerant as follows:

If Then

A siphon tube is present

Charge with the cylinder upright.

(i.e., the cylinder is marked with "Liquid filling siphon attached")

A siphon tube is NOT present Charge with the cylinder upside down.

▪ Open refrigerant cylinders slowly.

▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal

operation.

CAUTION

When the refrigerant charging procedure is done or when pausing, close the valve of the refrigerant tank immediately. If the valve is NOT closed immediately, remaining pressure might charge additional refrigerant. Possible consequence: Incorrect refrigerant amount.

2.1.4 Electrical

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

DANGER: RISK OF ELECTROCUTION

▪ Turn OFF all power supply before removing the switch box cover, connecting

electrical wiring or touching electrical parts.

▪ Disconnect the power supply for more than 10minutes, and measure the voltage

at the terminals of main circuit capacitors or electrical components before servicing. The voltage MUST be less than 50VDC before you can touch electrical components. For the location of the terminals, see the wiring diagram.

▪ Do NOT touch electrical components with wet hands. ▪ Do NOT leave the unit unattended when the service cover is removed.

Installer and user reference guide

2 | General safety precautions

WARNING

If NOT factory installed, a main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage categoryIII condition, MUST be installed in the fixed wiring.

WARNING

▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the applicable legislation. ▪ All field wiring MUST be performed in accordance with the wiring diagram

supplied with the product.

▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with

the piping and sharp edges. Make sure no external pressure is applied to the terminal connections.

▪ Make sure to install earth wiring. Do NOT earth the unit to a utility pipe, surge

absorber, or telephone earth. Incomplete earth may cause electrical shock.

▪ Make sure to use a dedicated power circuit. NEVER use a power supply shared by

another appliance.

▪ Make sure to install the required fuses or circuit breakers. ▪ Make sure to install an earth leakage protector. Failure to do so may cause

electrical shock or fire.

▪ When installing the earth leakage protector, make sure it is compatible with the

inverter (resistant to high frequency electric noise) to avoid unnecessary opening of the earth leakage protector.

CAUTION

▪ When connecting the power supply: connect the earth cable first, before making

the current-carrying connections.

▪ When disconnecting the power supply: disconnect the current-carrying cables

first, before separating the earth connection.

▪ The length of the conductors between the power supply stress relief and the

terminal block itself MUST be as such that the current-carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief.

NOTICE

Precautions when laying power wiring:

▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack

in the power wiring may cause abnormal heat).

▪ When connecting wiring which is the same thickness, do as shown in the figure

above.

▪ For wiring, use the designated power wire and connect firmly, then secure to

prevent outside pressure being exerted on the terminal board.

▪ Use an appropriate screwdriver for tightening the terminal screws. A screwdriver

with a small head will damage the head and make proper tightening impossible.

▪ Over-tightening the terminal screws may break them.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

2 | General safety precautions

Install power cables at least 1 m away from televisions or radios to prevent interference. Depending on the radio waves, a distance of 1 m may not be sufficient.

WARNING

▪ After finishing the electrical work, confirm that each electrical component and

terminal inside the electrical components box is connected securely.

▪ Make sure all covers are closed before starting up the unit.

NOTICE

Only applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method.

If there exists the possibility of reversed phase after a momentary black out and the power goes on and off while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase can break the compressor and other parts.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

3 | Specific installer safety instructions

3 Specific installer safety instructions

Always observe the following safety instructions and regulations.

General

WARNING

Unit installation (see

"16Unit installation"[450]

WARNING

The appliance using R32 refrigerant shall be stored so as to prevent mechanical damage and in a well-ventilated room without continuously operating ignition sources (e.g. open flames, an operating gas appliance, or an operating electric heater). The room size shall be as specified in the General safety precaution.

CAUTION

For walls containing a metal frame or a metal board, use a wall embedded pipe and wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire.

Refrigerant piping installation (see

CAUTION

Piping MUST be installed according to instructions given in "17 Piping

installation" [4 62]. Only mechanical joints (e.g. braze+flare connections) that are

compliant with the latest version of ISO14903 can be used.

CAUTION

▪ Do NOT use mineral oil on flared part. ▪ Do NOT reuse piping from previous installations. ▪ NEVER install a drier to this unit to guarantee its lifetime. The drying material may

dissolve and damage the system.

)

"17Piping installation"[462]

)

Installer and user reference guide

CAUTION

▪ Incomplete flaring may cause refrigerant gas leakage. ▪ Do NOT re-use flares. Use new flares to prevent refrigerant gas leakage. ▪ Use flare nuts that are included with the unit. Using different flare nuts may

cause refrigerant gas leakage.

CAUTION

Install the refrigerant piping or components in a position where they are unlikely to be exposed to any substance which may corrode components containing refrigerant, unless the components are constructed of materials that are inherently resistant to corrosion or are suitably protected against corrosion.

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

3 | Specific installer safety instructions

Electrical installation (see

WARNING

▪ All wiring MUST be performed by an authorised electrician and MUST comply

with the applicable legislation.

▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply

with the applicable legislation.

WARNING

▪ If the power supply has a missing or wrong N-phase, equipment might break

down.

▪ Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber,

or telephone earth. Incomplete earthing may cause electrical shock.

▪ Install the required fuses or circuit breakers. ▪ Secure the electrical wiring with cable ties so that the cables do NOT come in

contact with sharp edges or piping, particularly on the high-pressure side.

▪ Do NOT use taped wires, stranded conductor wires, extension cords, or

connections from a star system. They can cause overheating, electrical shock or fire.

▪ Do NOT install a phase advancing capacitor, because this unit is equipped with an

inverter. A phase advancing capacitor will reduce performance and may cause accidents.

"18Electrical installation"[467]

)

WARNING

ALWAYS use multicore cable for power supply cables.

WARNING

Use an all-pole disconnection type breaker with at least 3mm between the contact point gaps that provide full disconnection under overvoltage category III.

WARNING

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

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

For the user

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

4 User safety instructions

Always observe the following safety instructions and regulations.

4.1 General

WARNING

If you are NOT sure how to operate the unit, contact your installer.

WARNING

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

4 | User safety instructions

Children SHALL NOT play with the appliance. Cleaning and user maintenance SHALL NOT be made by

children without supervision.

WARNING

To prevent electrical shocks or fire:

▪ Do NOT rinse the unit. ▪ Do NOT operate the unit with wet hands. ▪ Do NOT place any objects containing water on the unit.

CAUTION

▪ Do NOT place any objects or equipment on top of the

unit.

▪ Do NOT sit, climb or stand on the unit.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

4 | User safety instructions

▪ Units are marked with the following symbol:

▪ Batteries are marked with the following symbol:

This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation.

Units must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. For more information, contact your installer or local authority.

This means that the batteries may NOT be mixed with unsorted household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a heavy metal above a certain concentration.

Possible chemical symbols are: Pb: lead (>0.004%).

Waste batteries must be treated at a specialized treatment facility for reuse. By ensuring waste batteries are disposed of correctly, you will help to prevent potential negative consequences for the environment and human health.

4.2 Instructions for safe operation

WARNING

▪ Do NOT modify, disassemble, remove, reinstall or repair

the unit yourself as incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer.

▪ In case of accidental refrigerant leaks, make sure there

are no naked flames. The refrigerant itself is entirely safe and non-toxic. R410A is a non-combustible refrigerant, and R32 is a mildly flammable refrigerant, but they will generate a toxic gas when they accidentally leak into a room where combustible air from fan heaters, gas cookers, etc. is present. Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming operation.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

4 | User safety instructions

CAUTION

▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are

dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer.

WARNING

This unit contains electrical and hot parts.

WARNING

Before operating the unit, be sure the installation has been carried out correctly by an installer.

CAUTION

It is unhealthy to expose your body to the air flow for a long time.

CAUTION

To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system.

CAUTION

Do NOT operate the system when using a room fumigation-type insecticide. Chemicals could collect in the unit, and endanger the health of people who are hypersensitive to chemicals.

CAUTION

▪ ALWAYS use a user interface to adjust the angle of the

flap. When the flap is swinging and you move it forcibly by hand, the mechanism will break.

▪ Be careful when adjusting the louvers. Inside the air

outlet, a fan is rotating at high speed.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

CAUTION

NEVER expose little children, plants or animals directly to the airflow.

Installer and user reference guide

4 | User safety instructions

WARNING

Do NOT place a flammable spray bottle near the air conditioner and do NOT use sprays near the unit. Doing so may result in a fire.

Maintenance and service (see

CAUTION: Pay attention to the fan!

It is dangerous to inspect the unit while the fan is running. Be sure to turn off the main switch before executing any

maintenance task.

CAUTION

Do NOT insert fingers, rods or other objects into the air inlet or outlet. When the fan is rotating at high speed, it will cause injury.

WARNING

NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out. Use of wire or copper wire may cause the unit to break down or cause a fire.

"10Maintenance and service"[434]

)

CAUTION

After a long use, check the unit stand and fitting for damage. If damaged, the unit may fall and result in injury.

CAUTION

Before accessing terminal devices, make sure to interrupt all power supply.

DANGER: RISK OF ELECTROCUTION

To clean the air conditioner or air filter, be sure to stop operation and turn all power supplies off. Otherwise, an electric shock and injury may result.

WARNING

Be careful with ladders when working in high places.

CAUTION

Installer and user reference guide

Turn off the unit before cleaning the air outlet, exterior, front panel and air filter.

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

4 | User safety instructions

WARNING

Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire.

About the refrigerant (see

WARNING: MILDLY FLAMMABLE MATERIAL

The R32 refrigerant (if applicable) in this unit is mildly flammable. Refer to the outdoor unit specifications for the type of refrigerant to be used.

WARNING

▪ Do NOT pierce or burn refrigerant cycle parts. ▪ Do NOT use cleaning materials or means to accelerate

the defrosting process other than those recommended by the manufacturer.

"10.5About the refrigerant"[438]

)

▪ Be aware that the refrigerant inside the system is

odourless.

WARNING

R410A is a non-combustible refrigerant, and R32 is a mildly flammable refrigerant; they normally don’t leak. If the refrigerant leaks in the room and comes into contact with fire from a burner, a heater, or a cooker, this may result in a fire (in case of R32), or the formation of a harmful gas.

Turn off any combustible heating devices, ventilate the room, and contact the dealer from where you purchased the unit.

Do not use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

4 | User safety instructions

Troubleshooting (see

WARNING

Stop operation and shut off the power if anything unusual occurs (burning smells etc.).

Leaving the unit running under such circumstances may cause breakage, electric shock or fire. Contact your dealer.

"11Troubleshooting"[439]

)

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

5 About the system

WARNING

▪ Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as

incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer.

▪ In case of accidental refrigerant leaks, make sure there are no naked flames. The

refrigerant itself is entirely safe and non-toxic. R410A is a non-combustible refrigerant, and R32 is a mildly flammable refrigerant, but they will generate a toxic gas when they accidentally leak into a room where combustible air from fan heaters, gas cookers, etc. is present. Always have qualified service personnel confirm that the point of leakage has been repaired or corrected before resuming operation.

NOTICE

Do NOT use the system for other purposes. In order to avoid any quality deterioration, do NOT use the unit for cooling precision instruments, food, plants, animals, or works of art.

NOTICE

For future modifications or expansions of your system:

A full overview of allowable combinations (for future system extensions) is available in technical engineering data and should be consulted. Contact your installer to receive more information and professional advice.

5 | About the system

5.1 System layout

INFORMATION

The following illustration is an example and might NOT match your system layout.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

a Indoor unit b Outdoor unit

c User interface

d Refrigerant piping + trasmission cable

Installer and user reference guide

5 | About the system

c d

e f

g h

e Drain pipe

a Front panel b Front grille

c Service cover d Air filters e Drain hose

f Refrigerant pipes g Electrical wiring h User interface

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

6 User interface

CAUTION

▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and

NOTICE

Do NOT wipe the controller operation panel with benzine, thinner, chemical dust cloth, etc. The panel may get discoloured or the coating peeled off. If it is heavily dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the panel clean. Wipe it with another dry cloth.

NOTICE

NEVER press the button of the user interface with a hard, pointed object. The user interface may be damaged.

6 | User interface

appliance problems may happen. For checking and adjusting the internal parts, contact your dealer.

NOTICE

NEVER pull or twist the electric wire of the user interface. It may cause the unit to malfunction.

This operation manual offers a non-exhaustive overview of the main functions of the system.

For more information about the user interface, see the operation manual of the installed user interface.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

7 | Before operation

7 Before operation

WARNING

This unit contains electrical and hot parts.

WARNING

Before operating the unit, be sure the installation has been carried out correctly by an installer.

CAUTION

It is unhealthy to expose your body to the air flow for a long time.

CAUTION

To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system.

CAUTION

Do NOT operate the system when using a room fumigation-type insecticide. Chemicals could collect in the unit, and endanger the health of people who are hypersensitive to chemicals.

NOTICE

Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.

This operation manual is for the following systems with standard control. Before initiating operation, contact your dealer for the operation that corresponds to your system type and mark. If your installation has a customised control system, ask your dealer for the operation that corresponds to your system.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

8 Operation

8.1 Operation range

Use the system in the following temperature and humidity ranges for safe and effective operation.

For combination with R410A outdoor unit, refer to the following table:

Outdoor units Cooling Heating

8 | Operation

RZQ200 Outdoor

–5~46°C DB –15~15°C WB

temperature

Indoor

14~28°C WB 10~27°C DB

temperature

RZQG71~140 Outdoor

–15~50°C DB –20~15.5°C WB

temperature

Indoor

12~28°C WB 10~27°C DB

temperature

RZQSG71~140 Outdoor

–15~46°C DB –15~15.5°C WB

temperature

Indoor

14~28°C WB 10~27°C DB

temperature

Indoor humidity ≤80%

(a)

To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

(a)

For combination with R32 outdoor unit, refer to the following table:

Outdoor units Cooling Heating

RZAG71~140 Outdoor

temperature

–20~52°C DB –20~24°C DB

–20~18°C WB

—

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Indoor temperature

RZASG71~140 Outdoor

temperature

Indoor temperature

AZAS71+100 Outdoor

temperature

Indoor temperature

RZA200+250 Outdoor

temperature

Indoor temperature

17~38°C DB

10~27°C DB

12~28°C WB

–15~46°C DB –15~21°C DB

–15~15.5°C WB

20~38°C DB

10~27°C DB

14~28°C WB

–5~46°C DB –15~21°C DB

–15~15.5°C WB

20~38°C DB

10~27°C DB

14~28°C WB

-20~46°C DB -20~15°C WB

14~28°C WB 10~27°C DB

Installer and user reference guide

8 | Operation

Outdoor units Cooling Heating

ARXM71 Outdoor

Indoor humidity ≤80%

(a)

To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

DB: Dry bulb

WB: Wet bulb

8.2 About operation modes

INFORMATION

Depending on the installed system, some operation modes will not be available.

▪ The air flow rate may adjust itself depending on the room temperature or the fan

may stop immediately. This is not a malfunction.

temperature

Indoor temperature

-10~46°C DB -15~18°C WB

14~28°C WB 10~30°C DB

(a)

—

▪ If the main power supply is turned off during operation, operation will restart

automatically after the power turns back on again.

▪ Setpoint. Target temperature for the Cooling, Heating, and Auto operation

modes.

▪ Setback. A function that keeps the room temperature in a specific range when

the system is turned off (by the user, the schedule function, or the OFF timer).

8.2.1 Basic operation modes

The indoor unit can operate in various operation modes.

Icon Operation mode

Cooling. In this mode, cooling will be activated as required by the

setpoint, or by Setback operation.

Heating. In this mode, heating will be activated as required by the setpoint, or by Setback operation.

Fan only. In this mode, air circulates without heating or cooling.

Dry. In this mode, the air humidity will be lowered with a

minimal temperature decrease.

The temperature and fan speed are controlled automatically and cannot be controlled by the controller.

Installer and user reference guide

Dry operation will not function if the room temperature is too low.

Auto. In Auto mode, the indoor unit automatically switches between heating and cooling mode, as required by the setpoint.

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8.2.2 Special heating operation modes

Operation Description

Defrost To prevent a loss of heating capacity

Hot start During hot start, the indoor unit fan will

8 | Operation

due to frost accumulation in the outdoor unit, the system will automatically switch to defrost operation.

During defrost operation, the indoor unit fan will stop operation, and the following icon will appear on the home screen:

The system will resume normal operation after approximately 6 to 8 minutes.

stop operation, and the following icon will appear on the home screen:

8.2.3 Airflow direction

When. Adjust the airflow direction as desired.

What. The system directs the airflow differently, depending on the user selection.

The following vertical airflow directions can be set by the user interface:

CAUTION

▪ ALWAYS use a user interface to adjust the angle of the flap. When the flap is

swinging and you move it forcibly by hand, the mechanism will break.

▪ Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at

high speed.

1 Vertical airflow

Direction Screen

Fixed position. The indoor unit blows

air in 1 of 5 fixed positions.

Swing. The indoor unit alternates between the 5 positions.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Note: Recommended position of the horizontal blades (flaps) varies according to the operation mode.

Installer and user reference guide

8 | Operation

a Cooling operation b Heating operation

INFORMATION

For setting procedure of the vertical airflow direction, see the reference guide or the manual of the used user interface.

2 Horizontal airflow

▪ Horizontal airflow: by manually adjusting position of the vertical blades (louvers).

To adjust the louvers (vertical blades)

1 Adjust horizontal blades using the user interface so you can easily access the

knobs on the vertical blades.

2 Hold knobs and move them down slightly.

3 Adjust left or right to the desired position while holding the knobs.

a Knobs

INFORMATION

When the unit is installed in a corner of a room, the direction of the louvers should be facing away from the wall. Efficiency will drop if a wall blocks the air.

8.3 To operate the system

INFORMATION

For setting of the operation mode or other settings, see the reference guide or operation manual of the user interface.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

9 | Energy saving and optimum operation

9 Energy saving and optimum operation

CAUTION

NEVER expose little children, plants or animals directly to the airflow.

NOTICE

Do NOT place objects below the indoor and/or outdoor unit that may get wet. Otherwise condensation on the unit or refrigerant pipes, air filter dirt or drain blockage may cause dripping, and objects under the unit may get dirty or damaged.

WARNING

Do NOT place a flammable spray bottle near the air conditioner and do NOT use sprays near the unit. Doing so may result in a fire.

Observe the following precautions to ensure the system operates properly.

▪ Prevent direct sunlight from entering a room during cooling operation by using

curtains or blinds.

▪ Make sure the area is well ventilated. Do NOT block any ventilation openings.

▪ Ventilate often. Extended use requires special attention to ventilation.

▪ Keep doors and windows closed. If the doors and windows remain open, air will

flow out of your room causing a decrease in the cooling or heating effect.

▪ Be careful NOT to cool or heat too much. To save energy, keep the temperature

setting at a moderate level.

▪ NEVER place objects near the air inlet or the air outlet of the unit. Doing so may

cause a reduced heating/cooling effect or stop operation.

▪ When the display shows (time to clean the air filter), clean the filters (see

"10.2.3To clean the air filter"[436]).

▪ Condensation may form if the humidity is above 80% or if the drain outlet gets

blocked.

▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

10 | Maintenance and service

10 Maintenance and service

10.1 Precautions for maintenance and service

NOTICE

Maintenance MUST be done by an authorized installer or service agent.

We recommend performing maintenance at least once a year. However, applicable legislation might require shorter maintenance intervals.

CAUTION: Pay attention to the fan!

It is dangerous to inspect the unit while the fan is running.

Be sure to turn off the main switch before executing any maintenance task.

CAUTION

Do NOT insert fingers, rods or other objects into the air inlet or outlet. When the fan is rotating at high speed, it will cause injury.

NOTICE

NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. However, as end user, you may clean the air outlet, exterior, front panel and air filter.

WARNING

NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out. Use of wire or copper wire may cause the unit to break down or cause a fire.

CAUTION

After a long use, check the unit stand and fitting for damage. If damaged, the unit may fall and result in injury.

CAUTION

Before accessing terminal devices, make sure to interrupt all power supply.

DANGER: RISK OF ELECTROCUTION

To clean the air conditioner or air filter, be sure to stop operation and turn all power supplies off. Otherwise, an electric shock and injury may result.

Installer and user reference guide

WARNING

Be careful with ladders when working in high places.

Following symbols may occur on the indoor unit:

Symbol Explanation

Measure the voltage at the terminals of main circuit capacitors or electrical components before servicing.

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Split system air conditioner

4P654517-1 – 2021.03

10.2 Cleaning the unit

CAUTION

Turn off the unit before cleaning the air outlet, exterior, front panel and air filter.

10.2.1 To clean the air outlet and exterior

WARNING

Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire.

NOTICE

▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide.

Possible consequence: Discoloration and deformation.

▪ Do NOT use water or air of 50°C or higher. Possible consequence: Discoloration

and deformation.

▪ Do NOT scrub firmly when washing the blade with water. Possible consequence:

The surface sealing peels off.

10 | Maintenance and service

Clean with a soft cloth. If it is difficult to remove stains, use water or neutral detergent.

10.2.2 To clean the front panel

You can remove the front panel to clean it.

1 Open the front panel. Hold the front panel by the panel tabs on both sides and

open until the panel stops.

WARNING

Do NOT let the indoor unit get wet. Possible consequence: Electric shock or fire.

NOTICE

▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide.

Possible consequence: Discoloration and deformation.

▪ Do NOT use water or air of 50°C or higher. Possible consequence: Discoloration

and deformation.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

a Panel tab

2 Remove the front panel by pushing hooks on either side of the front panel

towards the side of the unit and remove the panel.

Installer and user reference guide

10 | Maintenance and service

3 Clean the front panel. Wipe it with a soft cloth soaked in water by using only

4 Wipe panel with a dry soft cloth and let it dry up in the shade.

5 Attach the front panel. Align the hooks of the front panel with the slots and

neutral detergent.

push them all the way in.

6 Close the front panel slowly.

10.2.3 To clean the air filter

When to clean the air filter:

▪ Rule of thumb: Clean every 6 months. If the air in the room is extremely

contaminated, increase the cleaning frequency.

▪ Depending on the settings, the user interface can display the "Time to clean

filter" notification. Clean the air filter when the notification is displayed.

▪ If the dirt becomes impossible to clean, change the air filter (= optional

equipment).

How to clean the air filter:

1 Open the front panel. Hold the front panel by the panel tabs on both sides

and open until the panel stops.

NOTICE

Do NOT use water of 50°C or higher. Possible consequence: Discoloration and deformation.

Installer and user reference guide

a Panel tab

2 Remove the air filter. Push up the tab in the center of the air filter slightly

then pull the air filter out in a downward direction.

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

10 | Maintenance and service

3 Clean the air filter. Use a vacuum cleaner or wash with water. If the air filter is

very dirty, use a soft brush and neutral detergent.

4 Dry the air filter in the shadow.

5 Reattach the air filter. Replace the air filter as it was.

6 Close the front panel. Hold the front panel by the panel tabs on both sides

and close it slowly.

7 Turn ON the power.

8 To remove warning screens, see the reference guide of the user interface.

10.3 Maintenance before a long stop period

E.g., at the end of the season.

▪ Let the indoor units run in fan only operation for about half a day in order to dry

the interior of the units.

▪ Clean air filters and casings of indoor units (see "10.2Cleaning the unit"[435]).

▪ Turn off the power. The user interface display disappears. When the main power

is turned on, the air conditioner will use some power, even if it is not operating.

▪ Remove the batteries from the user interface (if applicable).

10.4 Maintenance after a long stop period

E.g., at the beginning of the season.

▪ Check and remove everything that might be blocking inlet and outlet vents of

indoor units and outdoor units.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

▪ Clean air filters and casings of indoor units (see "10.2Cleaning the unit"[435]).

▪ Insert batteries in the user interface (if applicable).

▪ Turn on the power at least 6 hours before operating the unit in order to ensure

smoother operation. As soon as the power is turned on, the user interface display appears.

Installer and user reference guide

10 | Maintenance and service

10.5 About the refrigerant

This product contains fluorinated greenhouse gases. Do NOT vent gases into the atmosphere.

Refrigerant type: R32

Global warming potential (GWP) value: 675

Refrigerant type: R410A

Global warming potential (GWP) value: 2087.5

NOTICE

Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO2 equivalent.

Formula to calculate the quantity in CO2 equivalent tonnes: GWP value of the refrigerant × total refrigerant charge [in kg] / 1000

Please contact your installer for more information.

WARNING: MILDLY FLAMMABLE MATERIAL

The R32 refrigerant (if applicable) in this unit is mildly flammable. Refer to the outdoor unit specifications for the type of refrigerant to be used.

WARNING

▪ Do NOT pierce or burn refrigerant cycle parts. ▪ Do NOT use cleaning materials or means to accelerate the defrosting process

other than those recommended by the manufacturer.

▪ Be aware that the refrigerant inside the system is odourless.

WARNING

Turn off any combustible heating devices, ventilate the room, and contact the dealer from where you purchased the unit.

Do not use the unit until a service person confirms that the part from which the refrigerant leaked has been repaired.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

11 Troubleshooting

If one of the following malfunctions occur, take the measures shown below and contact your dealer.

WARNING

Stop operation and shut off the power if anything unusual occurs (burning smells etc.).

Leaving the unit running under such circumstances may cause breakage, electric shock or fire. Contact your dealer.

The system MUST be repaired by a qualified service person.

11 | Troubleshooting

Malfunction Measure

If a safety device such as a fuse, a circuit breaker or a residual current device frequently actuates

Turn OFF all main power supply

switches to the unit. or the ON/OFF switch does NOT function properly.

If water leaks from the unit. Stop operation.

The operation switch does NOT function

Turn OFF the power supply. properly.

If the user interface displays . Notify your installer and report

the error code. To display an

error code see the reference

guide of the user interface.

If the system does NOT operate properly except for the above mentioned cases and none of the above mentioned malfunctions is evident, investigate the system in accordance with the following procedures.

Malfunction Measure

If the system does not operate at all.

▪ Check if there is no power failure. Wait until

power is restored. If power failure occurs during operation, the system automatically restarts immediately after power is restored.

▪ Check if no fuse has blown or breaker is activated.

Change the fuse or reset the breaker if necessary.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

11 | Troubleshooting

Malfunction Measure

The system operates but cooling or heating is insufficient.

▪ Check if air inlet or outlet of outdoor or indoor

unit is not blocked by obstacles. Remove any obstacles and make sure the air can flow freely.

▪ Check if the air filter is not clogged (see "10.2.3To

clean the air filter"[436]).

▪ Check the temperature setting.

▪ Check the fan speed setting on your user

interface.

▪ Check for open doors or windows. Close doors and

windows to prevent wind from coming in.

▪ Check if there are too many occupants in the room

during cooling operation. Check if the heat source of the room is excessive.

▪ Check if direct sunlight enters the room. Use

curtains or blinds.

▪ Check if the air flow angle is proper.

If after checking all above items, it is impossible to fix the problem yourself, contact your installer and state the symptoms, the complete model name of the unit (with manufacturing number if possible) and the installation date (possibly listed on the warranty card).

11.1 Symptoms that are NOT system malfunctions

The following symptoms are NOT system malfunctions:

11.1.1 Symptom: The system does not operate

▪ The air conditioner does not start immediately after the ON/OFF button on the

user interface is pressed. If the operation lamp lights, the system is in normal condition. To prevent overloading of the compressor motor, the air conditioner starts 5 minutes after it is turned ON again in case it was turned OFF just before. The same starting delay occurs after the operation mode selector button was used.

▪ The system does not start immediately after the power supply is turned on. Wait

one minute until the micro computer is prepared for operation.

11.1.2 Symptom: The fan speed does not correspond to the setting

The fan speed does not change even if the fan speed adjustment button in pressed. During heating operation, when the room temperature reaches the set temperature, the outdoor unit goes off and the indoor unit changes to whisper fan speed. This is to prevent cold air blowing directly on occupants of the room. The fan speed will not change if the button is pressed.

11.1.3 Symptom: The fan direction does not correspond to the setting

Installer and user reference guide

The fan direction does not correspond with the user interface display. The fan direction does not swing. This is because the unit is being controlled by the micro computer.

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11 | Troubleshooting

11.1.4 Symptom: White mist comes out of a unit (Indoor unit)

▪ When humidity is high during cooling operation (in oily and dusty places). If the

interior of an indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the interior of the indoor unit. Ask your dealer for details on cleaning the unit. This operation requires a qualified service person.

▪ When the air conditioner is changed over to heating operation after defrost

operation. Moisture generated by defrost becomes steam and exits.

11.1.5 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)

When the system is changed over to heating operation after defrost operation. Moisture generated by defrost becomes steam and is exhausted.

11.1.6 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes

This is because the user interface is intercepting noise from electric appliances other than the air conditioner. The noise prevents communication between the units, causing them to stop. Operation automatically restarts when the noise ceases.

11.1.7 Symptom: Noise of air conditioners (Indoor unit)

▪ A "zeen" sound is heard immediately after the power supply is turned on. The

electronic expansion valve inside an indoor unit starts working and makes the noise. Its volume will reduce in about one minute.

▪ A "pishi-pishi" squeaking sound is heard when the system stops after heating

operation. Expansion and contraction of plastic parts caused by temperature change make this noise.

11.1.8 Symptom: Noise of air conditioners (Indoor unit, outdoor unit)

▪ A continuous low hissing sound is heard when the system is in cooling or defrost

operation. This is the sound of refrigerant gas flowing through both indoor and outdoor units.

▪ A hissing sound which is heard at the start or immediately after stopping

operation or defrost operation. This is the noise of refrigerant caused by flow stop or flow change.

11.1.9 Symptom: Dust comes out of the unit

When the unit is used for the first time in a long time. This is because dust has gotten into the unit.

11.1.10 Symptom: The units can give off odours

The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it again.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

12 | Relocation

12 Relocation

Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise.

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Split system air conditioner

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13 Disposal

13 | Disposal

NOTICE

Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

For the installer

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Split system air conditioner

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14 About the box

14.1 Overview: About the box

This chapter describes what you have to do after the box with the indoor unit is delivered on-site.

It contains information about:

▪ Unpacking and handling the unit

▪ Removing the accessories from the unit

Keep the following in mind:

▪ At delivery, the unit MUST be checked for damage. Any damage MUST be

reported immediately to the claims agent of the carrier.

▪ Bring the packed unit as close as possible to its final installation position to

prevent damage during transport.

▪ Prepare the path along which you want to bring the unit inside in advance.

14 | About the box

14.2 Indoor unit

WARNING: MILDLY FLAMMABLE MATERIAL

The R32 refrigerant (if applicable) in this unit is mildly flammable. Refer to the outdoor unit specifications for the type of refrigerant to be used.

▪ At delivery, the unit MUST be checked for damage. Any damage MUST be

reported immediately to the claims agent of the carrier.

▪ Bring the packed unit as close as possible to its final installation position to

prevent damage during transport.

▪ Unpack the indoor unit completely according to the instructions mentioned on

the unpacking instructions sheet.

14.2.1 To unpack and handle the unit

Use a sling of soft material or protective plates together with a rope when lifting the unit. This to avoid damage or scratches to the unit.

1 Lift the unit by holding on to the hanger brackets without exerting any

pressure on other parts, especially on refrigerant piping, drain piping and other resin parts.

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Installer and user reference guide

14 | About the box

FAA71 FAA100

1×1× 1× 4× 1× 3× 1×

cba d e f g

14.2.2 To remove the accessories from the indoor unit

1 Remove:

▪ the accessory bag located at the bottom of the package,

▪ the mounting plate attached to the back of the indoor unit.

a Installation and operation manual b General safety precautions

c Fixing screws M4×25L for the mounting plate (9×), securing screws M4×12L (2× for

71 class, 3× for 100 class)

d Tie wraps (1 large, 3 small) e Insulation tape

f Screws cover (for 100 class only)

g Mounting plate

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15 About the units and options

In this chapter

15.1 Identification........................................................................................................................................................................... 47

15.1.1 Identification label: Indoor unit............................................................................................................................. 47

15.2 About the indoor unit ............................................................................................................................................................. 47

15.3 System layout.......................................................................................................................................................................... 48

15.4 Combining units and options.................................................................................................................................................. 49

15.4.1 Possible options for the indoor unit...................................................................................................................... 49

15.1 Identification

15.1.1 Identification label: Indoor unit

Location

15 | About the units and options

15.2 About the indoor unit

Use the system in the following temperature and humidity ranges for safe and effective operation.

For combination with R410A outdoor unit, refer to the following table:

Outdoor units Cooling Heating

RZQ200 Outdoor

RZQG71~140 Outdoor

RZQSG71~140 Outdoor

Indoor humidity ≤80%

temperature

Indoor temperature

temperature

Indoor temperature

temperature

Indoor temperature

–5~46°C DB –15~15°C WB

14~28°C WB 10~27°C DB

–15~50°C DB –20~15.5°C WB

12~28°C WB 10~27°C DB

–15~46°C DB –15~15.5°C WB

14~28°C WB 10~27°C DB

(a)

—

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Installer and user reference guide

15 | About the units and options

(a)

To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

For combination with R32 outdoor unit, refer to the following table:

Outdoor units Cooling Heating

RZAG71~140 Outdoor

temperature

Indoor temperature

RZASG71~140 Outdoor

temperature

Indoor temperature

AZAS71+100 Outdoor

temperature

Indoor temperature

RZA200+250 Outdoor

temperature

Indoor temperature

ARXM71 Outdoor

temperature

–20~52°C DB –20~24°C DB

–20~18°C WB

17~38°C DB

10~27°C DB

12~28°C WB

–15~46°C DB –15~21°C DB

–15~15.5°C WB

20~38°C DB

10~27°C DB

14~28°C WB

–5~46°C DB –15~21°C DB

–15~15.5°C WB

20~38°C DB

10~27°C DB

14~28°C WB

-20~46°C DB -20~15°C WB

14~28°C WB 10~27°C DB

-10~46°C DB -15~18°C WB

DB: Dry bulb

WB: Wet bulb

15.3 System layout

Indoor

14~28°C WB 10~30°C DB

temperature

Indoor humidity ≤80%

(a)

To avoid condensation and water dripping out of the unit. If the temperature or the humidity is beyond these conditions, safety devices may be put in action and the air conditioner may not operate.

(a)

INFORMATION

The following illustration is an example and might NOT match your system layout.

—

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15 | About the units and options

c d

e f

g h

a Indoor unit b Outdoor unit

c User interface d Refrigerant piping + trasmission cable e Drain pipe

a Front panel b Front grille

c Service cover d Air filters e Drain hose

f Refrigerant pipes g Electrical wiring h User interface

15.4 Combining units and options

INFORMATION

Certain options might NOT be available in your country.

15.4.1 Possible options for the indoor unit

Make sure you have the following mandatory options:

▪ User interface: Wired or wireless (refer to catalogues and technical literature for

selecting a suitable user interface)

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

16 | Unit installation

16 Unit installation

In this chapter

WARNING

Installation shall be done by an installer, the choice of materials and installation shall comply with the applicable legislation. In Europe, EN378 is the applicable standard.

16.1 Preparing the installation site ................................................................................................................................................ 50

16.1.1 Installation site requirements of the indoor unit.................................................................................................. 50

16.2 Opening and closing the unit ................................................................................................................................................. 52

16.2.1 To remove the front panel..................................................................................................................................... 52

16.2.2 To re-install the front panel................................................................................................................................... 52

16.2.3 To remove the front grille...................................................................................................................................... 52

16.2.4 To re-install the front grille.................................................................................................................................... 53

16.2.5 To open the service cover...................................................................................................................................... 54

16.2.6 To close the service cover...................................................................................................................................... 54

16.3 Mounting the indoor unit ....................................................................................................................................................... 54

16.3.1 To install the mounting plate................................................................................................................................. 54

16.3.2 To drill a wall hole .................................................................................................................................................. 56

16.3.3 To remove the pipe port cover.............................................................................................................................. 57

16.3.4 To hook the unit on the mounting plate ............................................................................................................... 58

16.3.5 To pass the pipes through the wall hole................................................................................................................ 58

16.3.6 To provide drainage ............................................................................................................................................... 59

16.1 Preparing the installation site

Choose an installation location with sufficient space for carrying the unit in and out of the site.

Avoid installation in an environment with a lot of organic solvents such as ink and siloxane.

WARNING

▪ Do NOT install the unit in places often used as work place. In case of construction

works (e.g. grinding works) where a lot of dust is created, the unit must be covered.

16.1.1 Installation site requirements of the indoor unit

INFORMATION

Also read the general installation site requirements. See the ""2 General safety

precautions"[48]" chapter.

Installer and user reference guide

INFORMATION

The sound pressure level is less than 70dBA.

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16 | Unit installation

≤120

≥90

≥30

b ≥1800

≥50 ≥50

≥90

(mm)

CAUTION

Appliance not accessible to the general public, install it in a secured area, protected from easy access.

This unit, both indoor and outdoor, is suitable for installation in a commercial and light industrial environment.

Do NOT install the unit in the following places:

▪ In places where a mineral oil mist, spray or vapour may be present in the

atmosphere. Plastic parts may deteriorate and fall off or cause water leakage.

It is NOT recommended to install the unit in the following places because it may shorten the life of the unit:

▪ Where the voltage fluctuates a lot

▪ In vehicles or vessels

▪ Where acidic or alkaline vapour is present

NOTICE

The equipment described in this manual may cause electronic noise generated from radio-frequency energy. The equipment complies to specifications that are designed to provide reasonable protection against such interference. However, there is no guarantee that interference will not occur in a particular installation.

It is therefore recommended to install the equipment and electric wires in such a way that they keep a proper distance from stereo equipment, personal computers, etc.

▪ In places with weak reception, keep distances of 3 m or more to avoid

electromagnetic disturbance of other equipment and use conduit tubes for power and transmission lines.

▪ Take care that in the event of a water leak, water cannot cause any damage to

the installation space and surroundings.

▪ Choose a location where the operation noise or the hot/cold air discharged from

the unit will not disturb anyone.

▪ Wall insulation. When conditions in the wall exceed 30°C and a relative humidity

of 80%, or when fresh air is inducted into the wall, then additional insulation is required (minimum 10mm thickness, polyethylene foam).

▪ Wall strength. Check whether the wall is strong enough to support the weight of

the unit. If there is a risk, reinforce the wall before installing the unit.

▪ Air flow. Make sure nothing blocks the air flow.

▪ Drainage. Make sure condensation water can be evacuated properly.

▪ Spacing. Mind the following requirements:

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16 | Unit installation

16.2 Opening and closing the unit

16.2.1 To remove the front panel

a Obstruction b Minimum distance to the floor

NOTICE

NEVER mount the indoor unit directly on the wall. Use the attached mounting plate for installation.

1 Open the front panel. Hold the front panel by the panel tabs on both sides and

open until the panel stops.

a Panel tabs

2 Remove the front panel by pushing hooks on either side of the front panel

towards the side of the unit and remove the panel. Or remove it by sliding the front panel either to the left or right and pulling it forward.

a Panel hook

16.2.2 To re-install the front panel

1 To attach the front panel, align the hooks of the front panel with the slots and

push them all the way in.

16.2.3 To remove the front grille

Installer and user reference guide

2 Close the front panel slowly.

CAUTION

Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system.

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16 | Unit installation

3×

6×

3×

aa a

1 Remove the front panel ("16.2.1To remove the front panel"[452]).

2 Remove the screws (3 for class 71, 6 for class 100) and remove grille clamps

(only for class 100) with the flat screwdriver or a coin.

▪ 3 for class 71:

▪ 6 for class 100:

a Grille clamps

3 Push down the upper hooks marked with a symbol with 3 circles in the

direction of the arrows (3 for class 71, 4 for class 100).

16.2.4 To re-install the front grille

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

a Hook

4 Making sure not to catch the horizontal flaps, remove the front grille by

pulling in the direction of the arrow.

1 Install the front grille and firmly engage the upper hooks (3 for class 71, 4 for

class 100).

2 Install the screws back (3 for class 71, 6 for class 100).

3 For class 100, re-install grille clamps and install the 3 screw covers (accessory).

4 Re-install front panel ("16.2.2To re-install the front panel"[452]).

Installer and user reference guide

16 | Unit installation

b c

16.2.5 To open the service cover

1 Remove 1 screw from the service cover.

2 Pull out the service cover horizontally away from the unit.

a Service cover screw b Handle

c Service cover

3 Remove 1 screw from the shield plate.

4 Pull out the shield plate horizontally away from the unit.

a Shield plate b Screw

16.2.6 To close the service cover

1 Place the shield plate to its original place on the unit.

2 Install 1 screw back on the shield plate.

3 Place the service cover to its original place on the unit.

4 Install 1 screw back on the service cover.

16.3 Mounting the indoor unit

In this chapter

16.3.1 To install the mounting plate................................................................................................................................. 54

16.3.2 To drill a wall hole .................................................................................................................................................. 56

16.3.3 To remove the pipe port cover.............................................................................................................................. 57

16.3.4 To hook the unit on the mounting plate ............................................................................................................... 58

16.3.5 To pass the pipes through the wall hole................................................................................................................ 58

16.3.6 To provide drainage ............................................................................................................................................... 59

16.3.1 To install the mounting plate

1 Remove the mounting plate from the unit.

▪ Remove 2 screws from class 71 or 1 screw from class 100.

Installer and user reference guide

▪ Push the knobs in the direction of the arrow.

▪ Remove the mounting plate.

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16 | Unit installation

c c

A Class 71 B Class 100

a Mounting plate b Screw

c Knob

2 Choose position for piping (for bottom or side piping see "16.3.3To remove

the pipe port cover"[457]):

a Right piping b Bottom-right piping

c Back-right piping d Bottom-left piping e Back-left piping

f Left piping

3 Attach the mounting plate on the wall and install it temporarily.

4 Level the mounting plate (use tabs on the mounting plate).

5 Mark the centers of the drilling points on the wall using a tape measure.

Position the end of tape measure at symbol " ".

6 Finish the installation by securing the mounting plate on the wall:

▪ When using M4×25L screws (accessory), install evenly at least 4 screws on each

side.

▪ When using bolts (Example: for concrete wall): use M8~M10 bolts (field supply)

one for each side.

INFORMATION

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

The removed pipe port cover can be kept in the mounting plate pocket.

Installer and user reference guide

16 | Unit installation

(mm)

60 85

480 411

1050

104 98

344

389

103

101

290

ca a ac

a a a a

(mm)

1200

543 503

16465

186 89

393

459

194

340

a a a

a a aa

b c c

d e

Installer and user reference guide

A Pattern for installation with mounting plate for class 71 B Pattern for installation with mounting plate for class 100

a Recommended fixing spots

b Pocket for the pipe port cover

c Tabs for placing a spirit level

d Through-the-wall hole Ø80mm

e Drain hose position

f Position for the tape measure at symbol " "

g Gas pipe end

h Liquid pipe end

i Temporary fixing hole

16.3.2 To drill a wall hole

CAUTION

1 Drill a 80 mm large feed-through hole in the wall with a downward slope

2 Insert a wall embedded pipe into the hole.

For walls containing a metal frame or a metal board, use a wall embedded pipe and wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire.

NOTICE

Be sure to seal the gaps around the pipes with sealing material (field supply), in order to prevent water leakage.

towards the outside.

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3 Insert a wall cover into the wall pipe.

Ø80

a Wall embedded pipe (field supply) b Putty (field supply)

c Wall hole cover (field supply)

4 After completing wiring, refrigerant piping and drain piping, do NOT forget to

seal the gap with putty.

16.3.3 To remove the pipe port cover

INFORMATION

To connect the piping on right-side, right-bottom, left-side or left-bottom, the pipe port cover MUST be removed.

16 | Unit installation

a Cut off for side piping b Cut off for bottom piping

1 Remove the front grille ("16.2.3To remove the front grille"[452]).

2 Cut off the pipe port cover from inside the front grille using a coping saw.

3 Remove any burrs along the cut section using a half round needle file.

NOTICE

Do NOT use nippers to remove the pipe port cover, as this would damage the front grille.

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Installer and user reference guide

16 | Unit installation

db e

e f

bda

c g

16.3.4 To hook the unit on the mounting plate

1 Remove the front panel ("16.2.1To remove the front panel"[452]).

2 Set the indoor unit on the mounting plate hooks. Use the " " marks as a

guide.

3 Place piece of packing material for support.

a Front grille b Refrigerant piping

c Tab 2× d Mounting plate (accessory) e Piece of packing material

16.3.5 To pass the pipes through the wall hole

1 Connect the drain piping "16.3.6To provide drainage"[459], the refrigerant

piping "17Piping installation" [4 62] and the electrical wiring "18 Electrical

installation"[467].

2 Shape the refrigerant pipes along the pipe path marking on the mounting

plate.

3 Fix the electrical wiring and the refrigerant pipes together using vinyl tape

(field supply).

a Drain hose b Wall hole

c Refrigerant piping d Electrical wiring e Vinyl tape (field supply)

f Power supply wiring

g Transmission wiring and user interface wiring

Installer and user reference guide

NOTICE

▪ Do NOT bend refrigerant pipes. ▪ Do NOT push the refrigerant pipes onto the bottom frame or the front grille.

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4 Pass the drain hose and refrigerant pipes through the wall hole.

360

Ø18

(mm)

5 When the complete installation is finished (drain piping "16.3.6 To provide

16.3.6 To provide drainage

Make sure condensation water can be evacuated properly. This involves:

16 | Unit installation

drainage" [4 59], the refrigerant piping "17 Piping installation" [4 62] and

the electrical wiring "18 Electrical installation" [4 67]), fix the indoor unit on the mounting plate "19.1To fix the unit on the mounting plate"[473].

▪ General guidelines

▪ Connecting the drain piping to the indoor unit

▪ Checking for water leaks

General guidelines

▪ Pipe length. Keep drain piping as short as possible.

▪ Pipe size. Keep the pipe size equal to or greater than that of the connecting pipe

(vinyl pipe with nominal Ø13 mm).

NOTICE

▪ Install the drain hose with a downward slope. ▪ Traps are NOT permitted. ▪ Do NOT put the end of the hose in water.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

▪ Drain hose extension. When extending the drain hose, use a field supplied

extension hose with nominal Ø13 mm. Do NOT forget to use a heat insulation tube on the indoor section of the extension hose.

Installer and user reference guide

16 | Unit installation

b c

Ø18

a b c

≥50

a Drain hose supplied with the indoor unit b Heat insulation tube (field supply)

c Extension drain hose (field supply)

▪ Rigid polyvinyl chloride pipe. When connecting a rigid polyvinyl chloride pipe

(nominal Ø13mm) directly to the drain hose as with embedded piping work, use a field supplied drain socket (nominal Ø13mm).

a Drain hose supplied with the indoor unit b Drain socket with nominal Ø13mm (field supply)

c Rigid polyvinyl chloride pipe (field supply)

▪ Insert the drain hose in the drain pipe as shown in the following figure, so it will

NOT be pulled out of the drain pipe.

▪ Condensation. Take measures against condensation. Insulate the complete drain

piping in the building.

To connect the piping on right side, right-back, or right-bottom

INFORMATION

The factory default is right-side piping. For left-side piping, remove the piping from the right side and install it on the left side.

1 Attach the drain hose with adhesive vinyl tape to the bottom of the

refrigerant pipes.

2 Wrap the drain hose and the refrigerant pipes together using insulation tape.

A Right-side piping B Right-bottom piping

C Right-back piping a Remove the pipe port cover here for right side piping

b Remove the pipe port cover here for right-bottom piping

To connect the piping on left side, left-back, or left-bottom

Installer and user reference guide

INFORMATION

The factory default is right-side piping. For left-side piping, remove the piping from the right side and install it on the left side.

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16 | Unit installation

a b

1 Remove the insulation fixing screw on the right side and remove the drain

hose.

2 Remove the drain plug on the left side and attach it to the right side.

NOTICE

Do NOT apply lubricating oil (refrigerant oil) to the drain plug when inserting it. The drain plug may deteriorate and cause drain leakage from the plug.

a 4mm hexagonal wrench

3 Insert the drain hose on the left side and do not forget to tighten it with the

fixing screw; otherwise water leakage may occur.

4 Attach the drain hose to the refrigerant piping bottom side using adhesive

vinyl tape.

To check for water leaks

1 Remove the air filters (see "10.2.3To clean the air filter"[436]).

2 Gradually pour approximately 1 l of water in the drain pan, and check for

water leaks.

3 Reattach the air filters (see "10.2.3To clean the air filter"[436]).

A Left-side piping B Left-back piping

C Left-bottom piping a Remove the pipe port cover here for left-side piping b Remove the pipe port cover here for left-bottom piping

a Drain pan b Plastic container

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

17 | Piping installation

17 Piping installation

In this chapter

17.1 Preparing refrigerant piping

17.1.1 Refrigerant piping requirements

17.1 Preparing refrigerant piping ................................................................................................................................................... 62

17.1.1 Refrigerant piping requirements ........................................................................................................................... 62

17.1.2 Refrigerant piping insulation.................................................................................................................................. 63

17.2 Connecting the refrigerant piping .......................................................................................................................................... 63

17.2.1 About connecting the refrigerant piping............................................................................................................... 63

17.2.2 Precautions when connecting the refrigerant piping............................................................................................ 63

17.2.3 Guidelines when connecting the refrigerant piping.............................................................................................. 64

17.2.4 Pipe bending guidelines......................................................................................................................................... 65

17.2.5 To flare the pipe end.............................................................................................................................................. 65

17.2.6 To connect the refrigerant piping to the indoor unit............................................................................................ 66

INFORMATION

Also read the precautions and requirements in the "2 General safety

precautions"[48].

▪ Foreign materials inside pipes (including oils for fabrication) must be

≤30mg/10m.

Refrigerant piping diameter

For piping connections of the indoor unit use the following piping diameters:

Refrigerant piping material

▪ Piping material: Phosphoric acid deoxidised seamless copper.

CAUTION

Piping MUST be installed according to instructions given in "17 Piping

installation" [4 62]. Only mechanical joints (e.g. braze+flare connections) that are

compliant with the latest version of ISO14903 can be used.

NOTICE

The piping and other pressure-containing parts shall be suitable for refrigerant. Use phosphoric acid deoxidised seamless copper for refrigerant.

Pipe outer diameter (mm)

Liquid pipe Gas pipe

Ø9.5 Ø15.9

▪ Flare connections: Only use annealed material.

▪ Piping temper grade and thickness:

Outer diameter (Ø) Temper grade Thickness (t)

(a)

9.5mm (3/8") Annealed (O) ≥0.8mm

15.9mm (5/8") Annealed (O)

(a)

Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit name plate), larger piping thickness might be required.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

17.1.2 Refrigerant piping insulation

ØiØ

ØpØ

▪ Use polyethylene foam as insulation material:

- with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and

0.045kcal/mh°C)

- with a heat resistance of at least 120°C

▪ Insulation thickness

17 | Piping installation

Pipe outer diameter (Øp) Insulation inner diameter

9.5mm (3/8") 12~15mm ≥13mm

15.9mm (5/8") 17~20mm ≥13mm

If the temperature is higher than 30°C and the humidity is higher than RH80%, the thickness of the insulation materials should be at least 20 mm to prevent condensation on the surface of the insulation.

17.2 Connecting the refrigerant piping

17.2.1 About connecting the refrigerant piping

Before connecting the refrigerant piping

Make sure the outdoor and indoor unit are mounted.

Typical workflow

Insulation thickness (t)

(Øi)

Connecting the refrigerant piping involves:

▪ Connecting the refrigerant piping to the indoor unit

▪ Connecting the refrigerant piping to the outdoor unit

▪ Insulating the refrigerant piping

▪ Keeping in mind the guidelines for:

- Pipe bending

- Flaring pipe ends

- Using the stop valves

17.2.2 Precautions when connecting the refrigerant piping

INFORMATION

Also read the precautions and requirements in the following chapters:

▪ "2General safety precautions"[48] ▪ "17.1Preparing refrigerant piping"[462]

DANGER: RISK OF BURNING/SCALDING

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

17 | Piping installation

CAUTION

▪ Do NOT use mineral oil on flared part. ▪ Do NOT reuse piping from previous installations. ▪ NEVER install a drier to this unit to guarantee its lifetime. The drying material may

dissolve and damage the system.

NOTICE

Take the following precautions on refrigerant piping into account:

▪ Avoid anything but the designated refrigerant to get mixed into the refrigerant

cycle (e.g. air).

▪ Only use R32 or R410A when adding refrigerant. Refer to the outdoor unit

specifications for the type of refrigerant to be used.

▪ Only use installation tools (e.g. manifold gauge set) that are exclusively used for

R32 or R410A installations to withstand the pressure and to prevent foreign materials (e.g. mineral oils and moisture) from mixing into the system.

▪ Install the piping so that the flare is NOT subjected to mechanical stress. ▪ Protect the piping as described in the following table to prevent dirt, liquid or

dust from entering the piping.

▪ Use caution when passing copper tubes through walls (see figure below).

Unit Installation period Protection method

Outdoor unit >1month Pinch the pipe

<1month Pinch or tape the pipe

Indoor unit Regardless of the period

INFORMATION

Do NOT open the refrigerant stop valve before checking the refrigerant piping. When you need to charge additional refrigerant it is recommended to open the refrigerant stop valve after charging.

17.2.3 Guidelines when connecting the refrigerant piping

Take the following guidelines into account when connecting pipes:

▪ Coat the flare inner surface with ether oil or ester oil when connecting a flare

nut. Tighten 3 or 4 turns by hand, before tightening firmly.

▪ ALWAYS use 2 wrenches together when loosening a flare nut.

Installer and user reference guide

▪ ALWAYS use a spanner and torque wrench together to tighten the flare nut when

connecting the piping. This to prevent nut cracking and leaks.

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

Piping size (mm) Tightening torque

0.4~0.8

±2

45°

90°

±2

ØA

a b

Ø15.9 62~75 19.3~19.7

17.2.4 Pipe bending guidelines

Use a pipe bender for bending. All pipe bends should be as gentle as possible (bending radius should be 30~40 mm or larger).

17 | Piping installation

a Torque wrench b Spanner

c Piping union

d Flare nut

Flare dimensions

(N•m)

Ø9.5 33~39 12.8~13.2

(A) (mm)

Flare shape (mm)

17.2.5 To flare the pipe end

1 Cut the pipe end with a pipe cutter.

2 Remove burrs with the cut surface facing down so that the chips do NOT enter

the pipe.

3 Remove the flare nut from the stop valve and put the flare nut on the pipe.

4 Flare the pipe. Set exactly at the position as shown in the following figure.

CAUTION

cause refrigerant gas leakage.

a Cut exactly at right angles. b Remove burrs.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Flare tool for R410A or

R32 (clutch type)

(Ridgid-type)

Conventional flare tool

Clutch type

Wing nut type

(Imperial-type)

A 0~0.5mm 1.0~1.5mm 1.5~2.0mm

5 Check that the flaring is properly made.

Installer and user reference guide

17 | Piping installation

a b

a c

17.2.6 To connect the refrigerant piping to the indoor unit

a Flare’s inner surface MUST be flawless.

b The pipe end MUST be evenly flared in a perfect circle.

c Make sure the flare nut is fitted.

CAUTION

WARNING: MILDLY FLAMMABLE MATERIAL

The R32 refrigerant (if applicable) in this unit is mildly flammable. Refer to the outdoor unit specifications for the type of refrigerant to be used.

▪ Pipe length. Keep refrigerant piping as short as possible.

1 Flare connections. Connect refrigerant piping to the unit using flare

connections.

2 Insulation. Insulate the refrigerant piping, the insulating tape should be

wrapped from the L-shaped bend all the way to the end inside the unit as follows:

a Field piping

b Indoor unit piping insulation tubing

c Indoor unit piping

d Insulating tubing tape

e Insulating tape (accessory)

f Large tie wrap (accessory)

g Beginning of wrapping

h L-shaped bend

i Insulation tubing seam (make sure there are no gaps in the insulation tubing seam)

NOTICE

Make sure to insulate all refrigerant piping. Any exposed piping might cause condensation.

Installer and user reference guide

FAA71+100BUV1B

Split system air conditioner

4P654517-1 – 2021.03

18 Electrical installation

In this chapter

18.1 About connecting the electrical wiring .................................................................................................................................. 67

18.1.1 Precautions when connecting the electrical wiring .............................................................................................. 67

18.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 68

18.1.3 Specifications of standard wiring components ..................................................................................................... 69

18.2 To connect the electrical wiring to the indoor unit ............................................................................................................... 69

18.1 About connecting the electrical wiring

Typical workflow

Connecting the electrical wiring typically consists of the following stages:

1 Making sure the power supply system complies with the electrical

specifications of the units.

2 Connecting the electrical wiring to the outdoor unit. 3 Connecting the electrical wiring to the indoor unit. 4 Connecting the main power supply.

18 | Electrical installation

18.1.1 Precautions when connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION

WARNING

ALWAYS use multicore cable for power supply cables.

INFORMATION

Also read the precautions and requirements in the "2 General safety

precautions"[48].

INFORMATION

Also read "18.1.3Specifications of standard wiring components"[469].

WARNING

▪ All wiring MUST be performed by an authorised electrician and MUST comply

with the applicable legislation.

▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply

with the applicable legislation.

FAA71+100BUV1B Split system air conditioner 4P654517-1 – 2021.03

Installer and user reference guide

18 | Electrical installation

b a

c b

AA´

A´