Daikin FTXP20L2V1B, FTXP25L2V1B, FTXP35L2V1B, ATXP20L2V1B, ATXP25L2V1B Installer reference guide

Installer reference guide

Daikin room air conditioner

FTXP20L2V1B
FTXP25L2V1B
FTXP35L2V1B

ATXP20L2V1B
ATXP25L2V1B
ATXP35L2V1B

FTXF20A2V1B
FTXF25A2V1B
FTXF35A2V1B
FTXF50A2V1B
FTXF60A2V1B
FTXF71A2V1B

Installer reference guide

Daikin room air conditioner

English

Table of Contents

Table of Contents

1 General safety precautions 2

1.1 About the documentation .......................................................... 2

1.1.1 Meaning of warnings and symbols.............................. 2

1.2 For the installer.......................................................................... 3

1.2.1 General ....................................................................... 3

1.2.2 Installation site ............................................................ 3

1.2.3 Refrigerant .................................................................. 5

1.2.4 Brine............................................................................ 5

1.2.5 Water .......................................................................... 5

1.2.6 Electrical ..................................................................... 6

2 About the documentation 6

2.1 About this document.................................................................. 6

2.2 Installer reference guide at a glance ......................................... 7

3 About the box 7

3.1 Overview: About the box ........................................................... 7

3.2 Indoor unit ................................................................................. 7

3.2.1 To unpack the indoor unit ........................................... 7

3.2.2 To remove the accessories from the indoor unit......... 7

4 About the units 8

4.1 System layout............................................................................ 8

4.2 Operation range ........................................................................ 8

5 Preparation 8

5.1 Overview: Preparation............................................................... 8

5.2 Preparing the installation site .................................................... 8

5.2.1 Installation site requirements of the indoor unit .......... 8

5.3 Preparing refrigerant piping....................................................... 9

5.3.1 Refrigerant piping requirements.................................. 9

5.3.2 Refrigerant piping insulation ....................................... 9

5.4 Preparing electrical wiring ......................................................... 9

5.4.1 About preparing electrical wiring................................. 9

6 Installation 10

6.1 Overview: Installation ................................................................ 10

6.2 Mounting the indoor unit............................................................ 10

6.2.1 Precautions when mounting the indoor unit................ 10

6.2.2 To open the indoor unit............................................... 10

6.2.3 To install the mounting plate....................................... 11

6.2.4 To install the indoor unit.............................................. 12

6.2.5 To provide drainage.................................................... 13

6.2.6 To connect optional accessories (wired user
interface, central user interface, wireless adapter,

etc.) ............................................................................. 14

6.2.7 To install the wireless adapter .................................... 14

6.2.8 To set a different address ........................................... 15

6.3 Connecting the refrigerant piping .............................................. 15

6.3.1 About connecting the refrigerant piping ...................... 15

6.3.2 Precautions when connecting the refrigerant piping... 15

6.3.3 Guidelines when connecting the refrigerant piping..... 16

6.3.4 Pipe bending guidelines.............................................. 16

6.3.5 To flare the pipe end................................................... 16

6.3.6 To connect the refrigerant piping to the indoor unit .... 17

6.4 Connecting the electrical wiring................................................. 17

6.4.1 About connecting the electrical wiring......................... 17

6.4.2 Precautions when connecting the electrical wiring ..... 17

6.4.3 Guidelines when connecting the electrical wiring ....... 17

6.4.4 Specifications of standard wiring components............ 17

6.4.5 To connect the electrical wiring on the indoor unit...... 18

7 Commissioning 18

7.1 Overview: Commissioning......................................................... 18

7.2 Checklist before commissioning................................................ 18

7.3 To perform a test run................................................................. 18

7.3.1 To perform a test run in winter season ....................... 18

8 Hand-over to the user 19

9 Disposal 19

10 Technical data 20

10.1 Wiring diagram ........................................................................... 20

11 Glossary 21

1 General safety precautions

1.1 About the documentation

▪ The original documentation is written in English. All other

languages are translations.

▪ The precautions described in this document cover very important

topics, follow them carefully.

▪ The installation of the system, and all activities described in the

installation manual and the installer reference guide MUST be
performed by an authorised installer.

1.1.1 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

Indicates a situation that could result in burning 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.

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 reference guide

2

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

1 General safety precautions

1.2 For the installer

1.2.1 General

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

NOTICE

Improper installation or attachment of equipment or
accessories could result in electric 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.

1.2.2 Installation site

▪ Provide sufficient space around the unit for servicing and air

circulation.

▪ Make sure the installation site withstands the unit's weight and

vibration.

▪ 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.

▪ In bathrooms.

Instructions for equipment using R32 refrigerant

If applicable.

DANGER: RISK OF BURNING

▪ 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

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.

NOTICE

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

unit.

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

NOTICE

Works executed on the outdoor unit are best done under
dry weather conditions to avoid water ingress.

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:

▪ 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.

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 well-ventilated 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.

NOTICE

▪ Do NOT re-use joints which have been used already.

▪ Joints made in installation between parts of refrigerant

system shall be accessible for maintenance purposes.

WARNING

Make sure installation, servicing, maintenance and repair
comply with instructions from Daikin and with applicable
legislation (for example national gas regulation) and are
executed only by authorised persons.

Installation space requirements

NOTICE

▪ Pipework shall be protected from physical damage.

▪ Installation of pipework shall be kept to a minimum.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

Installer reference guide

3

1 General safety precautions

Contains fluorinated greenhouse gases

2

1

1

1

2

2

kg

tCO2eq

1000

GWP × kg

=

=

+

kg

=

kg

=

GWP: xxx

R32

m (kg)

0

10

20

30

40

50

60

70

80

90

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

1

1.2

1.4

1.6

1.822.2

2.4

2.6

2.833.2

3.4

3.6

3.844.2

4.4

4.6

4.855.2

5.4

5.6

5.866.2

6.4

6.6

6.877.2

7.4

7.6

7.8

7.956

A

min

(m2)

Floor-standing unit

(c)

Wall-mounted unit

(b)

Ceiling-mounted unit

(a)

Ceiling-mounted

unit

(a)

—

4.6 13.5

<1.224

<1.224 —

4.6 182

1.225 0.956

4.8 14.7

1.225 12.9

4.8 198

1.4 1.25

5.0 16.0

1.4 16.8

5.0 215

1.6 1.63

5.2 17.3

1.6 22.0

5.2 232

1.8 2.07

5.4 18.6

1.8 27.8

5.4 250

2.0 2.55

5.6 20.0

2.0 34.3

5.6 269

2.2 3.09

5.8 21.5

2.2 41.5

5.8 289

2.4 3.68

6.0 23.0

2.4 49.4

6.0 309

2.6 4.31

6.2 24.5

2.6 58.0

6.2 330

2.8 5.00

6.4 26.1

2.8 67.3

6.4 351

3.0 5.74

6.6 27.8

3.0 77.2

6.6 374

3.2 6.54

6.8 29.5

3.2 87.9

6.8 397

3.4 7.38

7.0 31.3

3.4 99.2

7.0 420

3.6 8.27

7.2 33.1

3.6 111

7.2 445

3.8 9.22

7.4 34.9

3.8 124

7.4 470

4.0 10.2

7.6 36.9

4.0 137

7.6 496

4.2 11.3

7.8 38.8

4.2 151

7.8 522

4.4 12.4

7.956 40.8

4.4 166

7.956 549

m (kg)

A

min

(m2)

<1.224 —

4.6 20.2

1.225 1.43

4.8 22.0

1.4 1.87

5.0 23.8

1.6 2.44

5.2 25.8

1.8 3.09

5.4 27.8

2.0 3.81

5.6 29.9

2.2 4.61

5.8 32.1

2.4 5.49

6.0 34.3

2.6 6.44

6.2 36.6

2.8 7.47

6.4 39.1

3.0 8.58

6.6 41.5

3.2 9.76

6.8 44.1

3.4 11.0

7.0 46.7

3.6 12.4

7.2 49.4

3.8 13.8

7.4 52.2

4.0 15.3

7.6 55.1

4.2 16.8

7.8 58.0

4.4 18.5

7.956 61.0

Wall-mounted

unit

(b)

m (kg)

A

min

(m2)

Floor-standing

unit

(c)

m (kg)

A

min

(m2)

WARNING

If appliances contain R32 refrigerant, the floor area of the
room in which the appliances are installed, operated and
stored MUST be larger than the minimum floor area
defined in table below A (m2). This applies to:

▪ Indoor units without a refrigerant leakage sensor; in

case of indoor units with refrigerant leakage sensor,
consult the installation manual

▪ Outdoor units installed or stored indoors (e.g. winter

garden, garage, machinery room)

▪ Pipework in unventilated spaces

To determine the minimum floor area

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

refrigerant charge + additional refrigerant amount
charged).

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, and field piping

in unventilated spaces, 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.

Installer reference guide

4

m Total refrigerant charge in the system

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

A

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)

1.2.3 Refrigerant

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).

1 General safety precautions

▪ 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

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

A siphon tube is NOT present Charge with the cylinder upside

Charge with the cylinder upright.

down.

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 may 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 leakage 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:
Self-combustion 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.

▪ 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.

1.2.4 Brine

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

WARNING

The selection of the brine MUST be in accordance with the
applicable legislation.

WARNING

Take sufficient precautions in case of brine leakage. If
brine leaks, ventilate the area immediately and contact
your local dealer.

WARNING

The ambient temperature inside the unit can get much
higher than that of the room, e.g. 70°C. In case of a brine
leak, hot parts inside the unit can create a hazardous
situation.

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.

WARNING

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

▪ In case re-charge is required, refer to the nameplate of the unit. It

states the type of refrigerant and necessary amount.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

WARNING

The use and installation of the application MUST comply
with the safety and environmental precautions specified in
the applicable legislation.

1.2.5 Water

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

NOTICE

Make sure water quality complies with EU directive
98/83EC.

Installer reference guide

5

2 About the documentation

1.2.6 Electrical

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 1minute,

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.

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 electric 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.

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.

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.

2 About the documentation

2.1 About this document

INFORMATION

Make sure that the user has the printed documentation and
ask him/her to keep it for future reference.

Installer reference guide

6

Target audience

Authorised installers

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.

Documentation set

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 manual:

▪ Installation instructions

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

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

3 About the box

1

3

2

2

2× 2× 2×1× 1× 1×1×

1× 1×

edba c f g

h i

▪ Installer reference guide:

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

▪ 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

▪ 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

extranet (authentication required).

2.2 Installer reference guide at a glance

Chapter Description

General safety
precautions

About the documentation What documentation exists for the

About the box How to unpack the units and remove

About the unit ▪ How to identify the units

Preparation What to do and know before going

Installation What to do and know to install the

Commissioning What to do and know to commission the

Hand‑over to the user What to give and explain to the user

Disposal How to dispose of the system

Technical data Specifications of the system

Glossary Definition of terms

Safety instructions that you MUST read
before installing

installer

their accessories

▪ Operation range

on‑site

system

system after it is configured

3.2 Indoor unit

INFORMATION

The following figures are just examples and may NOT
completely match your system layout.

3.2.1 To unpack the indoor unit

3.2.2 To remove the accessories from the indoor unit

3 About the box

3.1 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 units

▪ Removing the accessories from the units

Keep the following in mind:

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

MUST be reported immediately to the carrier's claims agent.

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

position to prevent damage during transport.

▪ When handling the unit, take into account the following:

Fragile, handle the unit with care.

Keep the unit upright in order to avoid damage.

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

advance.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

a Installation manual

b Operation manual

c General safety precautions

d Titanium apatite deodorizing filter (only for FTXP20~35L

and ATXP20~35L)

e Indoor unit fixing screw (M4×12L). Refer to "6.2.4To install

the indoor unit"on page12.

f Dry battery AAA.LR03 (alkaline) for user interface
g User interface holder
h User interface

i Mounting plate

Installer reference guide

7

4 About the units

d

a

f

c

e

b

4 About the units

4.1 System layout

NOTICE

Design of the system must not be done at temperatures
below –15°C.

a Indoor unit
b Service lid
c Air filter
d Titanium apatite deodorizing filter (only for ATXP-L and

FTXP-L)

e Refrigerant piping, drain hose and interconnection cable

f Insulation tape

4.2 Operation range

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

Operation mode Operation range

(a)(b)

Cooling

Heating

Drying

(a)

(a)

(a) A safety device might stop the operation of the system.
(b) Condensation might occur on the indoor unit and drip.

▪ Outdoor temperature: –10~46°C

▪ Indoor temperature: 18~32°C

▪ Indoor humidity: ≤80%

▪ Outdoor temperature: –15~24°C

▪ Indoor temperature: 10~30°C

▪ Outdoor temperature: –10~46°C

▪ Indoor temperature: 18~32°C

▪ Indoor humidity: ≤80%

If operated outside the operation range:

5 Preparation

5.1 Overview: Preparation

This chapter describes what you have to do and know before going
on-site.

It contains information about:

▪ Preparing the installation site

▪ Preparing the refrigerant piping

▪ Preparing the electrical wiring

5.2 Preparing the installation site

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.

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

WARNING

The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).

5.2.1 Installation site requirements of the indoor unit

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

INFORMATION

The sound pressure level is less than 70dBA.

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

▪ Drainage. Make sure condensation water can be evacuated

properly.

▪ 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 or the floor is strong

enough to support the weight of the unit. If there is a risk, reinforce
the wall or the floor before installing the unit.

Install power cables at least 1 metre away from televisions or radios
to prevent interference. Depending on the radio waves, a distance of
3metres may NOT be sufficient.

▪ Choose a location where the hot/cold air discharged from the unit

or the operation noise, will NOT disturb anyone.

▪ Fluorescent lights. When installing a wireless user interface in a

room with fluorescent lights, mind the following to avoid
interference:

▪ Install the wireless user interface as close as possible to the

indoor unit.

▪ Install the indoor unit as far as possible from the fluorescent

lights.

▪ 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

▪ 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.

▪ In places where the unit would be in the path of direct sunlight.

▪ In bathrooms.

Installer reference guide

8

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

5 Preparation

≥50 ≥50

≥30

(mm)

t

Ø

ØiØ

i

t

ØpØ

p

▪ Sound sensitive areas (e.g. near a bedroom), so that the

operation noise will cause no trouble.

WARNING

Do NOT place objects below the indoor and/or outdoor unit
that may get wet. In this condition, condensation on the
unit or refrigerant pipes, air filter dirt or drain blockage may
cause dripping. This results in fouling or failure of the object
which is located beneath the unit.

▪ Spacing. Install the unit at least 1.8m from the floor and keep the

following requirements in mind for distances from the walls and
the ceiling:

5.3 Preparing refrigerant piping

5.3.1 Refrigerant piping requirements

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

Refrigerant piping diameter

Use the same diameters as the connections on the outdoor units:

Class L1 liquid piping L1 gas piping

20~35 Ø6.4 Ø9.5

50+60 Ø6.4 Ø12.7

71 Ø6.4 Ø15.9

Use the same diameters as the connections on the outdoor units:

Class L1 liquid piping L1 gas piping

15~35 Ø6.4 Ø9.5

42+50 Ø6.4 Ø12.7

Refrigerant piping material

▪ Piping material: Phosphoric acid deoxidised seamless copper.

▪ Flare connections: Only use annealed material.

▪ Piping temper grade and thickness:

Outer diameter

(Ø)

6.4mm (1/4") Annealed (O) ≥0.8mm

9.5mm (3/8")

12.7mm (1/2")

15.9mm (5/8")

(a) Depending on the applicable legislation and the unit's

Temper grade Thickness (t)

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

(a)

5.3.2 Refrigerant piping insulation

▪ 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

Pipe outer diameter

(Øp)

6.4mm (1/4") 8~10mm ≥10mm

9.5mm (3/8") 12~15mm

12.7mm (1/2") 14~16mm

15.9mm (5/8") 16~20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.

Insulation inner

diameter (Øi)

Insulation thickness

(t)

5.4 Preparing electrical wiring

5.4.1 About preparing electrical wiring

INFORMATION

Also read the precautions and requirements in the
"General safety precautions" chapter.

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.

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 the site and all electrical

construction MUST comply with the applicable
legislation.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

WARNING

ALWAYS use multicore cable for power supply cables.

Installer reference guide

9

6 Installation

a

a

a

b

a

1

2

6 Installation

6.1 Overview: Installation

This chapter describes what you have to do and know on-site to
install the system.

Typical workflow

Installation typically consists of the following stages:

1 Mounting the outdoor unit.

2 Mounting the indoor unit.

3 Connecting the refrigerant piping.

4 Checking the refrigerant piping.

5 Charging refrigerant.

6 Connecting the electrical wiring.

7 Finishing the outdoor installation.

8 Finishing the indoor installation.

INFORMATION

For installation of the outdoor unit (mounting the outdoor
unit, connecting the refrigerant piping to the outdoor unit,
charging refrigerant, connecting the electrical wiring to the
outdoor unit …), see the installation manual of the outdoor
unit.

INFORMATION

This chapter only describes installation instructions specific
to the indoor unit. For the other instructions, see:

▪ The installation manual of the outdoor unit

▪ The installation manual of the user interface

▪ The installation manual of the optional accessories

a Front panel shaft

To re-install the front panel

1 Attach the front panel. Align the shafts with the slots and push

them all the way in.

2 Close the front panel slowly and press on both sides at the

centre.

To remove the front grille

CAUTION

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

1 Remove the front panel to remove the air filter.

2 Remove 2 screws (class 20~35) or 3 screws (class 50~71) from

the front grille.

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

circles.

6.2 Mounting the indoor unit

6.2.1 Precautions when mounting the indoor unit

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

4 We recommend opening the flap before removing the front

5 Place both hands under the centre of the front grille, push it up

6.2.2 To open the indoor unit

To remove the front panel

1 Hold the front panel by the panel tabs on both sides and open

it.

To re-install the front grille

a Indentation on the unit

2 Remove the front panel by sliding it to the left or the right and

pulling it toward you.

Result: The front panel shaft on 1 side will be disconnected.

manner.

3 Disconnect the front panel shaft on the other side in the same

Installer reference guide

10

1 Install the front grille and firmly engage the 3 upper hooks.

2 Install 2 screws (class 20~35) or 3 screws (class 50~71) back

3 Install the air filter and then mount the front panel.

To remove the electrical wiring box cover

1 Remove the front grille.

a Upper hook
b Symbol with 3 circles

grille.

and then toward you.

on the front grille.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

6 Installation

a

a

c

b

a

1

3

2

a b

337

770

A

A

285

44.5

170

48

48

44.5

116.5

117

337

50

213

237

170

a

h

a

a

g

a

a

d

cb c

e

a

f

990

295

170

60

170

44.5

44.5

122

121.5

56.5

56.5

404

475

PIPING HOLE
CENTER:170mm
TO THE LEFT

PIPING HOLE
CENTER:170mm
TO THE LEFT

a a

a

b

c c

h g

a

e

d

a

f

A

B

(mm)

337

770

A

A

285

44.5

170

48

48

44.5

116.5

117

337

50

213

237

170

a

h

a

a

g

a

a

d

cb c

e

a

f

990

295

170

60

170

44.5

44.5

122

121.5

56.5

56.5

404

475

PIPING HOLE
CENTER:170mm
TO THE LEFT

PIPING HOLE
CENTER:170mm
TO THE LEFT

a a

a

b

c c

h g

a

e

d

a

f

A

B

(mm)

(mm)

2 Remove 1 screw from the electrical wiring box.

3 Open the electrical wiring box cover by pulling the protruding

part on the top of the cover.

4 Unhook the tab on the bottom and remove the electrical wiring

box cover.

a Tab
b Protruding part on the top of the cover
c Screw

5 To re-install the cover, first hook the bottom tab onto the

electrical wiring box, and slide the cover into the 2 upper tabs.

To open the service lid

1 Remove 1 screw from the service lid.

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

a Service lid screw

b Service lid

6.2.3 To install the mounting plate

1 Install the mounting plate temporarily.

2 Level the mounting plate.

3 Finish the installation by securing the mounting plate on the wall

using screws.

4 Use a tape measure. Position the end of tape measure at

symbol " ".

INFORMATION

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

A Class 20~35
B Class 50~71

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

a Recommended mounting plate fixing spots
b Pocket for the pipe port cover
c Tabs for placing a spirit level
d Through-the-wall hole Ø65 mm
e Drain hose position

f Position for the tape measure at symbol " "

g Gas pipe end

Installer reference guide

11

6 Installation

Ø65

a

b

c

a

a

b

c c d e

d

e

c

bfa

2×

h Liquid pipe end

6.2.4 To install the indoor unit

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.

NOTICE

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

1 Bore a 65 mm large feed-through hole in the wall with a

downward slope towards the outside.

2 Insert a wall pipe into the hole.

3 Insert a wall cover into the wall pipe.

NOTICE

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

7 Remove the drain plug from the drain port and connect the

drain hose to the port.

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.

4 After completing wiring, refrigerant piping and drain piping, do

NOT forget to seal the gap with a putty.

NOTICE

▪ Do NOT bend refrigerant pipes.

▪ Do NOT push the refrigerant pipes onto the bottom

frame or the front grille.

5 Cut off the pipe port cover from inside the front grille using a

coping saw.

a 4mm hexagonal wrench

8 Shape the refrigerant pipes along the pipe path marking on the

mounting plate.

a Drain hose
b Caulk this hole with putty or caulking material.
c Adhesive vinyl tape
d Insulation tape
e Mounting plate (accessory)

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

10 Set the indoor unit on the mounting plate hooks. Use the " "

marks as a guide.

11 Pull in the interconnection cable.

12 Connect the refrigerant pipes.

13 Wrap refrigerant pipes, interconnection cable and drain hose

together using insulation tape. Overlap at least half the width of
the tape with each turn.

6 Remove any burrs along the cut section using a half round

needle file.

a Drain hose

Installer reference guide

12

b Interconnection cable
c Mounting plate (accessory)
d Refrigerant pipes
e Indoor unit fixing screw M4×12L (accessory)

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

6 Installation

≥50

mm

A

B

C

a

b

b

a

c

a

b

a

b

A

B

C

b

a

Ø16

Ø18

f Bottom frame

14 Take care so the interconnection cable does NOT catch indoor

unit.

15 Press the bottom edge of indoor unit with both hands until it is

firmly caught by the mounting plate hooks.

16 Secure the indoor unit to the mounting plate using 2 indoor unit

fixing screws M4×12L (accessory).

Wall embedded piping

17 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.

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.

8 Press the bottom frame of the unit with both hands to set it on

the bottom hooks of the mounting. Make sure that the wires do
NOT get squeezed anywhere.

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

INFORMATION

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

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.

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

fixing screw; otherwise water leakage may occur.

a Insulation fixing screw

b Drain hose

4 Attach the drain hose to the refrigerant pipes bottom side using

adhesive vinyl 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.

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

4 Set the indoor unit on the mounting plate hooks. Use the " "

marks as a guide.

a Mounting plate (accessory)
b Interconnection cable
c Wire guide

5 Open the front panel, and then the service lid. Refer to

"6.2.2To open the indoor unit"on page10.

6 Pass the interconnection cable from the outdoor unit through

the feed-through wall hole, through the back of the indoor unit
and through the front side. (In case the interconnection cable
was stripped in advance, cover the ends with insulating tape.)

7 Bend the end of the cable up.

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.

6.2.5 To provide drainage

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

▪ 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 of 16 mm nominal diameter and
18mm outer diameter).

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

Installer reference guide

13

6 Installation

a

a

b c

Ø16

Ø16

a b c

Ø18

a

b

c

1

2

1

1

2

NOTICE

▪ Install the drain hose with a downward slope.

▪ Traps are NOT permitted.

▪ Do NOT put the end of the hose in water.

▪ Drain hose extension. To extend the drain hose, use a field

supplied Ø16mm hose. Do NOT forget to use heat insulation tube
on the indoor section of the extension hose.

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

▪ Rigid polyvinyl chloride pipe. When connecting a rigid polyvinyl

chloride pipe (Ø13 mm) directly to the drain hose, use a field
supplied drain socket (Ø13mm).

a S21 wire harness routing for wireless adapter
b S21 wire harness routing for other applications
c S21 connector

3 Put the electrical wiring box cover back and pull the wire

harness around it as shown in the figure above.

6.2.7 To install the wireless adapter

For class 20, 25, 35

a Drain hose supplied with the indoor unit
b Ø13mm drain socket (field supply)
c Rigid polyvinyl chloride pipe (field supply)

▪ Condensation. Take measures against condensation. Insulate

the complete drain piping in the building.

To check for water leaks

1 Remove the air filters.

2 Gradually pour approximately 1l of water in the drain pan, and

check for water leaks.

6.2.6 To connect optional accessories (wired user interface, central user interface, wireless adapter, etc.)

1 Remove the electrical wiring box cover (refer to "To remove the

electrical wiring box cover"on page10).

2 Attach the connection cable to the S21 connector and pull the

wire harness as shown in the following figure.

1 Place the wireless adapter against the hooks.

2 Lock the adapter by pressing it down.

3 For removal, perform the above steps in reverse order.

For class 50, 60, 71

4 Place the wireless adapter into the holder.

5 Fix the adapter in the holder by pressing down on it.

6 For removal, bend one clamp of the holder with a finger to

release the wireless adapter and remove it from the holder.

Installer reference guide

14

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

1

2

6.2.8 To set a different address

a a

ON/OFF

a

b

In case 2 indoor units are installed in 1 room, different addresses for
2 user interfaces can be set.

1 Remove the batteries from the user interface.

2 Cut the address jumper.

a Address jumper

NOTICE

Be careful NOT to damage any of the surrounding parts
when cutting the address jumper.

3 Turn the power supply on.

Result: The flap of the indoor unit will open and close to set the

reference position.

INFORMATION

▪ For FTXF-A units, the following setting MUST be

completed within 5minutes after the power supply is
turned on.

▪ In case you could NOT complete the setting in time,

turn the power supply off and wait at least 1 minute
before turning the power supply back on.

4 Press simultaneously:

Model Buttons

FTXP-L and ATXP-L

FTXF-A

5 Press:

Model Button

FTXP-L and ATXP-L

FTXF-A

, and

, and

6 Installation

a Operation lamp

b Indoor unit ON/OFF switch

8 Press the indoor unit ON/OFF switch while the operation lamp

is blinking.

Jumper Address

Factory setting 1

After cutting with nippers 2

INFORMATION

If the setting could NOT be completed while the operation
lamp was blinking, repeat the setting process from the
beginning.

9 When the setting is complete, press:

Model Button

FTXP-L and ATXP-L

FTXF-A

Result: The user interface will return to the previous screen.

Keep pressed for about
5seconds.

6.3 Connecting the refrigerant piping

6.3.1 About connecting the refrigerant piping

Before connecting the refrigerant piping

Make sure the outdoor and indoor unit are mounted.

Typical workflow

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

6 Select:

Model Symbol

FTXP-L and ATXP-L

FTXF-A

7 Press:

Model Button

FTXP-L and ATXP-L

FTXF-A

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

6.3.2 Precautions when connecting the refrigerant piping

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

DANGER: RISK OF BURNING

Installer reference guide

15

6 Installation

a

b

c

d

R=0.4~0.8

45°

±2

90°

±2

A

a b

A

a b

c

CAUTION

▪ Do NOT use mineral oil on flared part.

▪ NEVER install a drier to this R32 unit to guarantee its

lifetime. The drying material may dissolve and damage
the system.

CAUTION

▪ Use the flare nut fixed to the main unit.

▪ To prevent gas leakage, apply refrigeration oil only to

the inside of the flare. Use refrigeration oil for R32.

▪ Do NOT reuse joints.

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 when adding refrigerant.

▪ Only use installation tools (e.g. manifold gauge set) that

are exclusively used for R32 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).

a Torque wrench
b Spanner
c Piping union
d Flare nut

Piping size

(mm)

Tightening

torque (N•m)

Flare

dimensions (A)

Flare shape

(mm)

(mm)

Ø6.4 15~17 8.7~9.1

Ø9.5 33~39 12.8~13.2

Ø12.7 50~60 16.2~16.6

Ø15.9 63~75 19.3~19.7

6.3.4 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).

6.3.5 To flare the pipe end

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.

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.

Outdoor unit >1month Pinch the pipe

Indoor unit Regardless of the

6.3.3 Guidelines when connecting the

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.

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

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

Installer reference guide

16

Unit Installation period Protection method

<1month Pinch or tape the pipe

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.

refrigerant piping

a Cut exactly at right angles.
b Remove burrs.

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.

Flare tool for R32

(clutch type)

Conventional flare tool

Clutch type

(Ridgid-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.

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.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

6 Installation

c

a

b

f

d

g

e

b a

c b

c

aa

A

AA´

A´

c b ba c

a

B

B

6.3.6 To connect the refrigerant piping to the indoor unit

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

▪ Flare connections. Connect refrigerant piping to the unit using

flare connections.

▪ Insulation. Insulate the refrigerant piping, interconnection cable

and drain hose on the indoor unit as follows:

a Gas pipe
b Gas pipe insulation
c Interconnection cable
d Liquid pipe
e Liquid pipe insulation

f Finishing tape

g Drain hose

NOTICE

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

6.4 Connecting the electrical wiring

6.4.1 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.

6.4.2 Precautions when connecting the electrical wiring

INFORMATION

Also read the precautions and requirements in the
following chapters:

▪ General safety precautions

▪ Preparation

DANGER: RISK OF ELECTROCUTION

WARNING

▪ Do NOT use locally purchased electrical parts inside

the product.

▪ Do NOT branch the power supply for the drain pump,

etc. from the terminal block. This could result in
electrical shock or fire.

WARNING

Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.

6.4.3 Guidelines when connecting the electrical wiring

Keep the following in mind:

▪ If stranded conductor wires are used, install a round crimp-style

terminal on the end of the wire. Place the round crimp-style
terminal on the wire up to the covered part and fasten the terminal
with the appropriate tool.

a Stranded conductor wire

b Round crimp-style terminal

▪ Use the following methods for installing wires:

Wire type Installation method

Single-core wire

a Curled single-core wire

b Screw

c Flat washer

Stranded conductor
wire with round
crimp-style terminal

a Terminal

b Screw

c Flat washer

O Allowed

X NOT allowed

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

WARNING

ALWAYS use multicore cable for power supply cables.

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.

WARNING

Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.

Tightening torques

Item Tightening torque (N•m)

M4 (X1M) 1.2~1.5

M4 (earth)

6.4.4 Specifications of standard wiring components

Component

Interconnection cable
(indoor↔outdoor)

4-core cable ≥1.5mm²

andapplicable for

220~240V

Installer reference guide

17

7 Commissioning

a
b

c

6.4.5 To connect the electrical wiring on the indoor unit

Electrical work should be carried out in accordance with the
installation manual and the national electrical wiring rules or code of
practice.

It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wirings should ALWAYS be
at least 50mm.

NOTICE

Be sure to keep the power line and transmission line apart
from each other. Transmission wiring and power supply
wiring may cross, but may NOT run parallel.

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.

a Terminal block
b Electrical component block
c Wire retainer

1 Strip the wire ends approximately 15mm.

2 Match wire colours with terminal numbers on the indoor unit

terminal blocks and firmly screw the wires to the corresponding
terminals.

3 Connect the earth wires to the corresponding terminals.

4 Pull the wires to make sure that they are securely attached,

then retain the wires with the wire retainer.

5 Shape the wires so that the service lid fits securely, then close

the service lid.

6 Firmly fix the wires with the terminal screws.

You read the complete installation instructions, as
described in the installer reference guide.

The indoor units are properly mounted.

The outdoor unit is properly mounted.

Air inlet/outlet

Check that the air inlet and outlet of the unit is NOT
obstructed by paper sheets, cardboard, or any other
material.

There are NO missing phases or reversed phases.

The refrigerant pipes (gas and liquid) are thermally
insulated.

Drainage

Make sure drainage flows smoothly.

Possible consequence: Condensate water might drip.

The system is properly earthed and the earth terminals
are tightened.

The fuses or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.

The power supply voltage matches the voltage on the
identification label of the unit.

The specified wires are used for the interconnection
cable.

The indoor unit receives the signals of the user interface.

There are NO loose connections or damaged electrical
components in the switchbox.

The insulation resistance of the compressor is OK.

There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.

There are NO refrigerant leaks.

The correct pipe size is installed and the pipes are
properly insulated.

The stop valves (gas and liquid) on the outdoor unit are
fully open.

7 Commissioning

7.1 Overview: Commissioning

This chapter describes what you have to do and know to
commission the system after it is installed.

Typical workflow

Commissioning typically consists of the following stages:

1 Checking the "Checklist before commissioning".

2 Performing a test run for the system.

7.2 Checklist before commissioning

Do NOT operate the system before the following checks are OK:

Installer reference guide

18

7.3 To perform a test run

Prerequisite: Power supply MUST be in the specified range.

Prerequisite: Test run may be performed done in cooling or heating

mode.

Prerequisite: Test run should be performed in accordance with the
operation manual of the indoor unit to make sure that all functions
and parts are working properly.

1 In cooling mode, select the lowest programmable temperature.

In heating mode, select the highest programmable temperature.
Test run can be disabled if necessary.

2 When the test run is finished, set the temperature to a normal

level. In cooling mode: 26~28°C, in heating mode: 20~24°C.

3 The system stops operating 3 minutes after turning the unit

OFF.

7.3.1 To perform a test run in winter season

When operating the air conditioner in Cooling mode in winter, set it
to test run operation using the following method.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

For FTXP-L and ATXP-L units

1 Press , , and simultaneously.

2 Press .

3 Select .

4 Press .

5 Press or to switch the system on.

Result: Test run operation will stop automatically after about

30minutes.

6 To stop operation, press .

For FTXF-A units

7 Press to switch the system on.

8 Press the centre of , , and simultaneously.

9 Press twice.

Result: will appear on the display. Test run operation is

selected.

Result: Test run operation will stop automatically after about
30minutes.

8 Hand-over to the user

10 To stop operation, press .

INFORMATION

Some of the functions CANNOT be used in the test run
operation mode.

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

8 Hand-over to the user

Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:

▪ Make sure that the user has the printed documentation and ask

him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.

▪ Explain the user how to properly operate the system and what to

do in case of problems.

▪ Show the user what to do in relation to maintaining the unit.

9 Disposal

Dismantling of the unit and treatment of the refrigerant, oil and other
parts MUST comply with the applicable legislation.

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

Installer reference guide

19

10 Technical data

Unified Wiring Diagram Legend

For applied parts and numbering refer to the wiring diagram sticker supplied on the unit. Part numbering is realized by Arabic numbers in ascending order for each part and

is represented in the overview below by symbol “*” in the part code.

: CIRCUIT BREAKER : PROTECTIVE EARTH

: CONNECTION : PROTECTIVE EARTH (SCREW)

,

: CONNECTOR

A

: RECTIFIER

: EARTH : RELAY CONNECTOR

: FIELD WIRING : SHORT CIRCUIT CONNECTOR

: FUSE : TERMINAL

INDOOR

: INDOOR UNIT : TERMINAL STRIP

OUTDOOR

: OUTDOOR UNIT : WIRE CLAMP

BLK : BLACK GRN : GREEN PNK : PINK WHT : WHITE

BLU : BLUE GRY : GREY PRP, PPL : PURPLE YLW : YELLOW

BRN : BROWN ORG : ORANGE RED : RED

A*P : PRINTED CIRCUIT BOARD PS : SWITCHING POWER SUPPLY

BS* : PUSH BUTTON ON / OFF, OPERATION SWITCH PTC* : THERMISTOR PTC

BZ, H*O : BUZZER Q* :

INSULATED GATE BIPOLAR TRANSISTOR (IGBT)

C* : CAPACITOR Q*DI : EARTH LEAK CIRCUIT BREAKER

AC*, CN*, E*, HA*, HE, HL*, HN*,
HR*, MR*_A, MR*_B, S*, U, V,
W, X*A, K*R_*

: CONNECTION, CONNECTOR Q*L : OVERLOAD PROTECTOR

D*, V*D : DIODE Q*M : THERMO SWITCH

DB* : DIODE BRIDGE R* : RESISTOR

DS* : DIP SWITCH R*T : THERMISTOR

E*H : HEATER RC : RECEIVER

F*U, FU*

(FOR CHARACTERISTICS

REFER TO PCB INSIDE YOUR UNIT)

: FUSE S*C : LIMIT SWITCH

FG* : CONNECTOR (FRAME GROUND) S*L : FLOAT SWITCH

H* : HARNESS S*NPH : PRESSURE SENSOR (HIGH)

H*P, LED*, V*L : PILOT LAMP, LIGHT EMITTING DIODE S*NPL : P

RESSURE SENSOR (LOW)

HAP : LIGHT EMITTING DIODE (SERVICE MONITOR GREEN) S*PH, HPS* : PRESSURE SWITCH (HIGH)

HIGH VOLTAGE : HIGH VOLTAGE S*PL : PRESSURE SWITCH (LOW)

IES : INTELLIGENT EYE SENSOR S*T : THERMOSTAT

IPM* : INTELLIGENT POWER MODULE S*W, SW* : OPERATION SWITCH

K*R, KCR, KFR, KHuR, K*M : MAGNETIC RELAY SA*, F1S : SURGE ARRESTOR

L : LIVE SR*, WLU : SIGNAL RECEIVER

L* : COIL SS* : SELECTOR SWITCH

L*R : REACTOR SHEET METAL : TERMINAL STRIP FIXED PLATE

M* : STEPPER MOTOR T*R : TRANSFORMER

M*C : COMPRESSOR MOTOR TC, TRC : TRANSMITTER

M*F : FAN MOTOR V*, R*V : VARISTOR

M*P : DRAIN PUMP MOTOR V*R : DIODE BRIDGE

M*S : SWING MOTOR WRC : WIRELESS REMOTE CONTROLLER

MR*, MRCW*, MRM*, MRN* : MAGNETIC RELAY X* : TERMINAL

N ::NEUTRAL X*M : TERMINAL STRIP (BLOCK)

n = *, N=* NUMBER OF PASSES THROUGH FERRITE CORE Y*E : ELECTRONIC EXPANSION VALVE COIL

PAM : PULSE-AMPLITUDE MODULATION Y*R, Y*S : REVERSING SOLENOID VALVE COIL

PCB* : PRINTED CIRCU

IT BOARD Z*C : FERRITE CORE

PM* : POWER MODULE ZF, Z*F : NOISE FILTER

CIRCUIT BREAKER

10 Technical data

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 extranet (authentication required).

10.1 Wiring diagram

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(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B

Daikin room air conditioner

4P513661-1 – 2017.10

11 Glossary

Dealer

Sales distributor for the product.

Authorized installer

Technical skilled person who is qualified to install the
product.

User

Person who is owner of the product and/or operates the
product.

Applicable legislation

All international, European, national and local directives,
laws, regulations and/or codes that are relevant and
applicable for a certain product or domain.

Service company

Qualified company which can perform or coordinate the
required service to the product.

Installation manual

Instruction manual specified for a certain product or
application, explaining how to install, configure and maintain
it.

Operation manual

Instruction manual specified for a certain product or
application, explaining how to operate it.

Maintenance instructions

Instruction manual specified for a certain product or
application, which explains (if relevant) how to install,
configure, operate and/or maintain the product or
application.

Accessories

Labels, manuals, information sheets and equipment that are
delivered with the product and that need to be installed
according to the instructions in the accompanying
documentation.

Optional equipment

Equipment made or approved by Daikin that can be
combined with the product according to the instructions in
the accompanying documentation.

Field supply

Equipment NOT made by Daikin that can be combined with
the product according to the instructions in the
accompanying documentation.

11 Glossary

(A)(F)TXP20~35L2V1B + FTXF20~71A2V1B
Daikin room air conditioner
4P513661-1 – 2017.10

Installer reference guide

21

4P513661-1 2017.10

Copyright 2017 Daikin