Table of contents
Installation Manual
3
FTXF20~42C5V1B
Daikin room air conditioners
3P519299-9X – 2020.12
Table of contents
1 About the documentation 3
1.1 About this document.................................................................. 3
2 Specific installer safety instructions 3
3 About the box 5
3.1 Indoor unit ................................................................................. 5
3.1.1 To remove the accessories from the indoor unit......... 5
4 About the unit 5
4.1 System layout............................................................................ 5
4.2 Operation range ........................................................................ 5
5 Unit installation 6
5.1 Preparing the installation site .................................................... 6
5.1.1 Installation site requirements of the indoor unit .......... 6
5.1.2 Additional installation site requirements of the
outdoor unit in cold climates ....................................... 6
5.2 Opening the indoor unit ............................................................. 6
5.2.1 To remove the front panel........................................... 6
5.2.2 To re-install the front panel ......................................... 6
5.2.3 To remove the front grille............................................ 6
5.2.4 To re-install the front grille .......................................... 7
5.2.5 To remove the electrical wiring box cover................... 7
5.2.6 To open the service cover........................................... 7
5.3 Mounting the indoor unit............................................................ 7
5.3.1 To install the mounting plate....................................... 7
5.3.2 To drill a wall hole ....................................................... 7
5.3.3 To remove the pipe port cover.................................... 8
5.3.4 To provide drainage.................................................... 8
6 Piping installation 9
6.1 Preparing refrigerant piping....................................................... 9
6.1.1 Refrigerant piping requirements.................................. 9
6.1.2 Refrigerant piping insulation ....................................... 9
6.2 Connecting the refrigerant piping .............................................. 9
6.2.1 Guidelines when connecting the refrigerant piping..... 10
6.2.2 To connect the refrigerant piping to the indoor unit .... 10
6.3 Checking the refrigerant piping ................................................. 10
6.3.1 To check for leaks....................................................... 10
6.3.2 To perform vacuum drying.......................................... 10
7 Electrical installation 10
7.1 Specifications of standard wiring components .......................... 11
7.2 To connect the electrical wiring to the indoor unit ..................... 11
8 Finishing the indoor unit installation 11
8.1 To insulate the drain piping, refrigerant piping and
interconnection cable ................................................................ 11
8.2 To pass the pipes through the wall hole.................................... 12
8.3 To fix the unit on the mounting plate ......................................... 12
9 Configuration 12
9.1 To set a different address.......................................................... 12
10 Commissioning 13
10.1 Checklist before commissioning................................................ 13
10.2 Checklist during commissioning ................................................ 13
10.3 To perform a test run................................................................. 13
10.3.1 To perform a test run in winter season ....................... 14
11 Disposal 14
12 Technical data 15
12.1 Wiring diagram .......................................................................... 15
12.1.1 Unified wiring diagram legend..................................... 15
1 About the documentation
1.1 About this document
INFORMATION
Make sure that the user has the printed documentation and
ask him/her to keep it for future reference.
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.
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.
INFORMATION
This document only describes installation instructions
specific to the outdoor unit. For installation of the indoor
unit (mounting the indoor unit, connecting the refrigerant
piping to the indoor unit, connecting the electrical wiring to
the indoor unit …), see the installation manual of the indoor
unit.
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)
▪ 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
Business Portal (authentication required).
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
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